./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b52b7cb04206fcfe3f216083825f85a3c49ed6dc90ac2fa7b25183898e97828e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:17:20,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:17:20,514 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:17:20,518 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:17:20,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:17:20,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:17:20,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:17:20,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:17:20,541 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:17:20,542 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:17:20,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:17:20,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:17:20,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:17:20,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:17:20,545 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:17:20,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:17:20,546 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:17:20,546 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:17:20,547 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:17:20,547 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:17:20,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:17:20,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:17:20,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:17:20,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:17:20,553 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:17:20,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:17:20,554 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:17:20,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:17:20,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:17:20,555 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:17:20,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:17:20,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:17:20,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:17:20,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:17:20,556 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:17:20,556 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:17:20,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:17:20,557 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:17:20,557 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:17:20,557 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:17:20,557 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:17:20,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:17:20,558 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_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b52b7cb04206fcfe3f216083825f85a3c49ed6dc90ac2fa7b25183898e97828e [2023-11-29 00:17:20,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:17:20,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:17:20,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:17:20,798 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:17:20,798 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:17:20,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-29 00:17:23,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:17:23,890 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:17:23,890 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-29 00:17:23,920 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/data/9636ab0c4/6edf85550fe64b5587ec7775430582ce/FLAGd0abd886f [2023-11-29 00:17:23,932 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/data/9636ab0c4/6edf85550fe64b5587ec7775430582ce [2023-11-29 00:17:23,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:17:23,936 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:17:23,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:17:23,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:17:23,942 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:17:23,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:17:23" (1/1) ... [2023-11-29 00:17:23,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aad479c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:17:23, skipping insertion in model container [2023-11-29 00:17:23,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:17:23" (1/1) ... [2023-11-29 00:17:24,088 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:17:24,405 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label01.c[20454,20467] [2023-11-29 00:17:24,454 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label01.c[26009,26022] [2023-11-29 00:17:25,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:17:25,094 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:17:25,133 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label01.c[20454,20467] [2023-11-29 00:17:25,144 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label01.c[26009,26022] [2023-11-29 00:17:25,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:17:25,564 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:17:25,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:17:25 WrapperNode [2023-11-29 00:17:25,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:17:25,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:17:25,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:17:25,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:17:25,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:17:25" (1/1) ... [2023-11-29 00:17:25,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:17:25" (1/1) ... [2023-11-29 00:17:25,855 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5211 [2023-11-29 00:17:25,856 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:17:25,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:17:25,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:17:25,856 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:17:25,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:17:25" (1/1) ... [2023-11-29 00:17:25,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:17:25" (1/1) ... [2023-11-29 00:17:25,959 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:17:25" (1/1) ... [2023-11-29 00:17:26,128 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 00:17:26,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:17:25" (1/1) ... [2023-11-29 00:17:26,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:17:25" (1/1) ... [2023-11-29 00:17:26,281 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:17:25" (1/1) ... [2023-11-29 00:17:26,307 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:17:25" (1/1) ... [2023-11-29 00:17:26,361 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:17:25" (1/1) ... [2023-11-29 00:17:26,375 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:17:25" (1/1) ... [2023-11-29 00:17:26,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:17:26,449 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:17:26,449 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:17:26,449 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:17:26,450 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:17:25" (1/1) ... [2023-11-29 00:17:26,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:17:26,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:17:26,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:17:26,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:17:26,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:17:26,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:17:26,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:17:26,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:17:26,685 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:17:26,687 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:17:31,309 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:17:31,374 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:17:31,374 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 00:17:31,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:17:31 BoogieIcfgContainer [2023-11-29 00:17:31,375 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:17:31,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:17:31,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:17:31,381 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:17:31,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:17:23" (1/3) ... [2023-11-29 00:17:31,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed353b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:17:31, skipping insertion in model container [2023-11-29 00:17:31,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:17:25" (2/3) ... [2023-11-29 00:17:31,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed353b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:17:31, skipping insertion in model container [2023-11-29 00:17:31,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:17:31" (3/3) ... [2023-11-29 00:17:31,383 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-29 00:17:31,401 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:17:31,401 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 00:17:31,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:17:31,478 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c7db3b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:17:31,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 00:17:31,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 867 states, 864 states have (on average 1.9710648148148149) internal successors, (1703), 866 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:31,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 00:17:31,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:31,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:31,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:31,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:31,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1824032080, now seen corresponding path program 1 times [2023-11-29 00:17:31,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:31,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404320478] [2023-11-29 00:17:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:31,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:31,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:31,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404320478] [2023-11-29 00:17:31,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404320478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:31,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:31,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:17:31,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551913657] [2023-11-29 00:17:31,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:31,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:17:31,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:31,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:17:31,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:17:31,760 INFO L87 Difference]: Start difference. First operand has 867 states, 864 states have (on average 1.9710648148148149) internal successors, (1703), 866 states have internal predecessors, (1703), 0 states have call successors, (0), 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 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:31,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:31,852 INFO L93 Difference]: Finished difference Result 1679 states and 3299 transitions. [2023-11-29 00:17:31,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:17:31,854 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-11-29 00:17:31,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:31,873 INFO L225 Difference]: With dead ends: 1679 [2023-11-29 00:17:31,874 INFO L226 Difference]: Without dead ends: 863 [2023-11-29 00:17:31,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:17:31,882 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:31,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1631 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:17:31,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-11-29 00:17:31,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2023-11-29 00:17:31,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 861 states have (on average 1.8954703832752613) internal successors, (1632), 862 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1632 transitions. [2023-11-29 00:17:31,963 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1632 transitions. Word has length 25 [2023-11-29 00:17:31,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:31,963 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1632 transitions. [2023-11-29 00:17:31,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:31,963 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1632 transitions. [2023-11-29 00:17:31,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 00:17:31,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:31,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:31,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:17:31,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:31,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:31,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1401330254, now seen corresponding path program 1 times [2023-11-29 00:17:31,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:31,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271410306] [2023-11-29 00:17:31,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:31,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:32,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:32,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271410306] [2023-11-29 00:17:32,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271410306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:32,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:32,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:17:32,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110214371] [2023-11-29 00:17:32,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:32,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:17:32,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:32,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:17:32,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:17:32,309 INFO L87 Difference]: Start difference. First operand 863 states and 1632 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:32,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:32,427 INFO L93 Difference]: Finished difference Result 921 states and 1724 transitions. [2023-11-29 00:17:32,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:17:32,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-11-29 00:17:32,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:32,434 INFO L225 Difference]: With dead ends: 921 [2023-11-29 00:17:32,434 INFO L226 Difference]: Without dead ends: 863 [2023-11-29 00:17:32,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:17:32,436 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 0 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:32,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4833 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:17:32,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-11-29 00:17:32,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2023-11-29 00:17:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 861 states have (on average 1.8373983739837398) internal successors, (1582), 862 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1582 transitions. [2023-11-29 00:17:32,464 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1582 transitions. Word has length 25 [2023-11-29 00:17:32,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:32,464 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1582 transitions. [2023-11-29 00:17:32,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:32,464 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1582 transitions. [2023-11-29 00:17:32,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 00:17:32,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:32,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:32,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:17:32,467 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:32,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:32,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2074254863, now seen corresponding path program 1 times [2023-11-29 00:17:32,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:32,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545904132] [2023-11-29 00:17:32,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:32,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:32,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:32,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545904132] [2023-11-29 00:17:32,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545904132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:32,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:32,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:17:32,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174671875] [2023-11-29 00:17:32,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:32,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:17:32,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:32,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:17:32,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:17:32,660 INFO L87 Difference]: Start difference. First operand 863 states and 1582 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:39,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:39,578 INFO L93 Difference]: Finished difference Result 3118 states and 5891 transitions. [2023-11-29 00:17:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:17:39,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-11-29 00:17:39,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:39,589 INFO L225 Difference]: With dead ends: 3118 [2023-11-29 00:17:39,589 INFO L226 Difference]: Without dead ends: 2365 [2023-11-29 00:17:39,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:17:39,592 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 2504 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2504 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:39,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2504 Valid, 833 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-11-29 00:17:39,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2023-11-29 00:17:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2365. [2023-11-29 00:17:39,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2365 states, 2363 states have (on average 1.5641134151502327) internal successors, (3696), 2364 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:39,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 3696 transitions. [2023-11-29 00:17:39,654 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 3696 transitions. Word has length 47 [2023-11-29 00:17:39,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:39,654 INFO L495 AbstractCegarLoop]: Abstraction has 2365 states and 3696 transitions. [2023-11-29 00:17:39,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:39,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 3696 transitions. [2023-11-29 00:17:39,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 00:17:39,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:39,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:39,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:17:39,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:39,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:39,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1958225767, now seen corresponding path program 1 times [2023-11-29 00:17:39,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:39,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280415007] [2023-11-29 00:17:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:39,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:39,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:39,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280415007] [2023-11-29 00:17:39,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280415007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:39,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:39,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:17:39,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555356023] [2023-11-29 00:17:39,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:39,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:17:39,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:39,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:17:39,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:17:39,916 INFO L87 Difference]: Start difference. First operand 2365 states and 3696 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:40,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:40,378 INFO L93 Difference]: Finished difference Result 3135 states and 4942 transitions. [2023-11-29 00:17:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:17:40,378 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-11-29 00:17:40,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:40,396 INFO L225 Difference]: With dead ends: 3135 [2023-11-29 00:17:40,396 INFO L226 Difference]: Without dead ends: 3080 [2023-11-29 00:17:40,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:17:40,399 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 11585 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11585 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:40,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11585 Valid, 4253 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:17:40,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3080 states. [2023-11-29 00:17:40,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3080 to 2418. [2023-11-29 00:17:40,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2416 states have (on average 1.5653973509933774) internal successors, (3782), 2417 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3782 transitions. [2023-11-29 00:17:40,465 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3782 transitions. Word has length 74 [2023-11-29 00:17:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:40,466 INFO L495 AbstractCegarLoop]: Abstraction has 2418 states and 3782 transitions. [2023-11-29 00:17:40,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:40,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3782 transitions. [2023-11-29 00:17:40,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 00:17:40,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:40,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:40,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:17:40,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:40,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:40,469 INFO L85 PathProgramCache]: Analyzing trace with hash -783811831, now seen corresponding path program 1 times [2023-11-29 00:17:40,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:40,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852245230] [2023-11-29 00:17:40,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:40,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:40,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:40,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852245230] [2023-11-29 00:17:40,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852245230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:40,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:40,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:17:40,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91636544] [2023-11-29 00:17:40,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:40,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:17:40,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:40,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:17:40,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:40,585 INFO L87 Difference]: Start difference. First operand 2418 states and 3782 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:40,635 INFO L93 Difference]: Finished difference Result 2623 states and 4113 transitions. [2023-11-29 00:17:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:17:40,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-11-29 00:17:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:40,650 INFO L225 Difference]: With dead ends: 2623 [2023-11-29 00:17:40,650 INFO L226 Difference]: Without dead ends: 2515 [2023-11-29 00:17:40,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:40,652 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1498 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:40,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1656 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:17:40,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2023-11-29 00:17:40,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2511. [2023-11-29 00:17:40,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2509 states have (on average 1.5663611000398565) internal successors, (3930), 2510 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3930 transitions. [2023-11-29 00:17:40,719 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3930 transitions. Word has length 76 [2023-11-29 00:17:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:40,719 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 3930 transitions. [2023-11-29 00:17:40,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:40,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3930 transitions. [2023-11-29 00:17:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 00:17:40,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:40,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:40,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:17:40,722 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:40,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:40,722 INFO L85 PathProgramCache]: Analyzing trace with hash -781666879, now seen corresponding path program 1 times [2023-11-29 00:17:40,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:40,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139945505] [2023-11-29 00:17:40,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:40,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:41,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:41,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139945505] [2023-11-29 00:17:41,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139945505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:41,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:41,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:17:41,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945393147] [2023-11-29 00:17:41,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:41,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:17:41,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:41,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:17:41,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:17:41,122 INFO L87 Difference]: Start difference. First operand 2511 states and 3930 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:41,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:41,514 INFO L93 Difference]: Finished difference Result 2714 states and 4254 transitions. [2023-11-29 00:17:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:17:41,515 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-11-29 00:17:41,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:41,529 INFO L225 Difference]: With dead ends: 2714 [2023-11-29 00:17:41,530 INFO L226 Difference]: Without dead ends: 2513 [2023-11-29 00:17:41,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:17:41,532 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 9060 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9060 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:41,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9060 Valid, 2081 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:17:41,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2023-11-29 00:17:41,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2511. [2023-11-29 00:17:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2509 states have (on average 1.5655639697090473) internal successors, (3928), 2510 states have internal predecessors, (3928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:41,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3928 transitions. [2023-11-29 00:17:41,597 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3928 transitions. Word has length 76 [2023-11-29 00:17:41,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:41,598 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 3928 transitions. [2023-11-29 00:17:41,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3928 transitions. [2023-11-29 00:17:41,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 00:17:41,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:41,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:41,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:17:41,600 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:41,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:41,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1409718351, now seen corresponding path program 1 times [2023-11-29 00:17:41,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:41,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686723754] [2023-11-29 00:17:41,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:41,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:41,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:41,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686723754] [2023-11-29 00:17:41,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686723754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:41,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:41,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:17:41,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499379601] [2023-11-29 00:17:41,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:41,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:17:41,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:41,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:17:41,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:17:41,827 INFO L87 Difference]: Start difference. First operand 2511 states and 3928 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2023-11-29 00:17:41,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:41,878 INFO L93 Difference]: Finished difference Result 2519 states and 3937 transitions. [2023-11-29 00:17:41,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:17:41,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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 77 [2023-11-29 00:17:41,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:41,893 INFO L225 Difference]: With dead ends: 2519 [2023-11-29 00:17:41,893 INFO L226 Difference]: Without dead ends: 2517 [2023-11-29 00:17:41,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:17:41,895 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 1 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4726 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:41,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4726 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:17:41,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2023-11-29 00:17:41,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2515. [2023-11-29 00:17:41,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2515 states, 2513 states have (on average 1.564265817747712) internal successors, (3931), 2514 states have internal predecessors, (3931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:41,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 3931 transitions. [2023-11-29 00:17:41,983 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 3931 transitions. Word has length 77 [2023-11-29 00:17:41,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:41,983 INFO L495 AbstractCegarLoop]: Abstraction has 2515 states and 3931 transitions. [2023-11-29 00:17:41,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2023-11-29 00:17:41,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 3931 transitions. [2023-11-29 00:17:41,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 00:17:41,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:41,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:41,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:17:41,985 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:41,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:41,985 INFO L85 PathProgramCache]: Analyzing trace with hash 89163937, now seen corresponding path program 1 times [2023-11-29 00:17:41,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:41,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401035860] [2023-11-29 00:17:41,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:41,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:42,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:42,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401035860] [2023-11-29 00:17:42,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401035860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:42,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:42,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:17:42,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57543618] [2023-11-29 00:17:42,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:42,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:17:42,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:42,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:17:42,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:42,036 INFO L87 Difference]: Start difference. First operand 2515 states and 3931 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:42,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:42,075 INFO L93 Difference]: Finished difference Result 2909 states and 4551 transitions. [2023-11-29 00:17:42,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:17:42,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-29 00:17:42,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:42,087 INFO L225 Difference]: With dead ends: 2909 [2023-11-29 00:17:42,088 INFO L226 Difference]: Without dead ends: 2704 [2023-11-29 00:17:42,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:42,089 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1515 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:42,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1737 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:17:42,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2023-11-29 00:17:42,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2702. [2023-11-29 00:17:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2702 states, 2700 states have (on average 1.5637037037037036) internal successors, (4222), 2701 states have internal predecessors, (4222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:42,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 4222 transitions. [2023-11-29 00:17:42,135 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 4222 transitions. Word has length 78 [2023-11-29 00:17:42,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:42,135 INFO L495 AbstractCegarLoop]: Abstraction has 2702 states and 4222 transitions. [2023-11-29 00:17:42,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:42,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 4222 transitions. [2023-11-29 00:17:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 00:17:42,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:42,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:42,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:17:42,137 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:42,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:42,137 INFO L85 PathProgramCache]: Analyzing trace with hash -321222751, now seen corresponding path program 1 times [2023-11-29 00:17:42,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:42,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072202757] [2023-11-29 00:17:42,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:42,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:42,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:42,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072202757] [2023-11-29 00:17:42,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072202757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:42,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:42,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:17:42,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512215443] [2023-11-29 00:17:42,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:42,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:17:42,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:42,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:17:42,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:42,187 INFO L87 Difference]: Start difference. First operand 2702 states and 4222 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:42,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:42,232 INFO L93 Difference]: Finished difference Result 3454 states and 5396 transitions. [2023-11-29 00:17:42,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:17:42,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-29 00:17:42,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:42,245 INFO L225 Difference]: With dead ends: 3454 [2023-11-29 00:17:42,245 INFO L226 Difference]: Without dead ends: 3062 [2023-11-29 00:17:42,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:42,247 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1513 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:42,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1739 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:17:42,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2023-11-29 00:17:42,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3060. [2023-11-29 00:17:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 3058 states have (on average 1.5604970568999346) internal successors, (4772), 3059 states have internal predecessors, (4772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 4772 transitions. [2023-11-29 00:17:42,304 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 4772 transitions. Word has length 78 [2023-11-29 00:17:42,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:42,304 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 4772 transitions. [2023-11-29 00:17:42,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:42,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 4772 transitions. [2023-11-29 00:17:42,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 00:17:42,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:42,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:42,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:17:42,306 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:42,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:42,306 INFO L85 PathProgramCache]: Analyzing trace with hash -549861983, now seen corresponding path program 1 times [2023-11-29 00:17:42,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:42,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144085819] [2023-11-29 00:17:42,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:42,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:42,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:42,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144085819] [2023-11-29 00:17:42,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144085819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:42,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:42,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:17:42,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814199662] [2023-11-29 00:17:42,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:42,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:17:42,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:42,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:17:42,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:42,359 INFO L87 Difference]: Start difference. First operand 3060 states and 4772 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:42,413 INFO L93 Difference]: Finished difference Result 4496 states and 6990 transitions. [2023-11-29 00:17:42,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:17:42,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-29 00:17:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:42,430 INFO L225 Difference]: With dead ends: 4496 [2023-11-29 00:17:42,430 INFO L226 Difference]: Without dead ends: 3746 [2023-11-29 00:17:42,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:42,433 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1509 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:42,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1735 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:17:42,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2023-11-29 00:17:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 3744. [2023-11-29 00:17:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3742 states have (on average 1.5521111704970605) internal successors, (5808), 3743 states have internal predecessors, (5808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 5808 transitions. [2023-11-29 00:17:42,518 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 5808 transitions. Word has length 78 [2023-11-29 00:17:42,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:42,519 INFO L495 AbstractCegarLoop]: Abstraction has 3744 states and 5808 transitions. [2023-11-29 00:17:42,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:42,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 5808 transitions. [2023-11-29 00:17:42,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 00:17:42,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:42,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:42,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:17:42,520 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:42,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:42,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1175518047, now seen corresponding path program 1 times [2023-11-29 00:17:42,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:42,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744651826] [2023-11-29 00:17:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:42,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:42,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:42,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744651826] [2023-11-29 00:17:42,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744651826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:42,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:42,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:17:42,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196698694] [2023-11-29 00:17:42,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:42,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:17:42,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:42,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:17:42,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:42,571 INFO L87 Difference]: Start difference. First operand 3744 states and 5808 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:42,651 INFO L93 Difference]: Finished difference Result 6484 states and 9986 transitions. [2023-11-29 00:17:42,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:17:42,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-29 00:17:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:42,666 INFO L225 Difference]: With dead ends: 6484 [2023-11-29 00:17:42,666 INFO L226 Difference]: Without dead ends: 5050 [2023-11-29 00:17:42,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:42,670 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 1507 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:42,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1737 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:17:42,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5050 states. [2023-11-29 00:17:42,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5050 to 5048. [2023-11-29 00:17:42,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5048 states, 5046 states have (on average 1.5362663495838287) internal successors, (7752), 5047 states have internal predecessors, (7752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5048 states to 5048 states and 7752 transitions. [2023-11-29 00:17:42,783 INFO L78 Accepts]: Start accepts. Automaton has 5048 states and 7752 transitions. Word has length 78 [2023-11-29 00:17:42,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:42,783 INFO L495 AbstractCegarLoop]: Abstraction has 5048 states and 7752 transitions. [2023-11-29 00:17:42,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:42,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5048 states and 7752 transitions. [2023-11-29 00:17:42,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 00:17:42,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:42,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:42,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:17:42,785 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:42,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash -286784607, now seen corresponding path program 1 times [2023-11-29 00:17:42,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:42,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057206705] [2023-11-29 00:17:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:42,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:42,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:42,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:42,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057206705] [2023-11-29 00:17:42,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057206705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:42,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:42,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:17:42,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29894496] [2023-11-29 00:17:42,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:42,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:17:42,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:17:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:42,836 INFO L87 Difference]: Start difference. First operand 5048 states and 7752 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:42,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:42,953 INFO L93 Difference]: Finished difference Result 10268 states and 15594 transitions. [2023-11-29 00:17:42,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:17:42,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-29 00:17:42,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:42,964 INFO L225 Difference]: With dead ends: 10268 [2023-11-29 00:17:42,964 INFO L226 Difference]: Without dead ends: 7530 [2023-11-29 00:17:42,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:42,969 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 1505 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:42,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1739 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:17:42,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7530 states. [2023-11-29 00:17:43,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7530 to 7528. [2023-11-29 00:17:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7528 states, 7526 states have (on average 1.5126229072548498) internal successors, (11384), 7527 states have internal predecessors, (11384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7528 states to 7528 states and 11384 transitions. [2023-11-29 00:17:43,161 INFO L78 Accepts]: Start accepts. Automaton has 7528 states and 11384 transitions. Word has length 78 [2023-11-29 00:17:43,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:43,161 INFO L495 AbstractCegarLoop]: Abstraction has 7528 states and 11384 transitions. [2023-11-29 00:17:43,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 7528 states and 11384 transitions. [2023-11-29 00:17:43,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 00:17:43,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:43,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:43,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:17:43,163 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:43,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:43,163 INFO L85 PathProgramCache]: Analyzing trace with hash -589805919, now seen corresponding path program 1 times [2023-11-29 00:17:43,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:43,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972513834] [2023-11-29 00:17:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:43,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:43,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:43,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972513834] [2023-11-29 00:17:43,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972513834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:43,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:43,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:17:43,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832749743] [2023-11-29 00:17:43,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:43,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:17:43,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:43,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:17:43,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:43,209 INFO L87 Difference]: Start difference. First operand 7528 states and 11384 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:43,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:43,416 INFO L93 Difference]: Finished difference Result 17452 states and 26042 transitions. [2023-11-29 00:17:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:17:43,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-29 00:17:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:43,432 INFO L225 Difference]: With dead ends: 17452 [2023-11-29 00:17:43,432 INFO L226 Difference]: Without dead ends: 12234 [2023-11-29 00:17:43,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:43,440 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 1511 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:43,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1741 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:17:43,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12234 states. [2023-11-29 00:17:43,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12234 to 12232. [2023-11-29 00:17:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12232 states, 12230 states have (on average 1.4829108748977924) internal successors, (18136), 12231 states have internal predecessors, (18136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:43,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12232 states to 12232 states and 18136 transitions. [2023-11-29 00:17:43,822 INFO L78 Accepts]: Start accepts. Automaton has 12232 states and 18136 transitions. Word has length 78 [2023-11-29 00:17:43,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:43,822 INFO L495 AbstractCegarLoop]: Abstraction has 12232 states and 18136 transitions. [2023-11-29 00:17:43,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:43,823 INFO L276 IsEmpty]: Start isEmpty. Operand 12232 states and 18136 transitions. [2023-11-29 00:17:43,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 00:17:43,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:43,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:43,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:17:43,824 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:43,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:43,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1500697018, now seen corresponding path program 1 times [2023-11-29 00:17:43,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:43,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026055426] [2023-11-29 00:17:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:43,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:17:43,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:43,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026055426] [2023-11-29 00:17:43,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026055426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:43,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:43,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:17:43,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792965550] [2023-11-29 00:17:43,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:43,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:17:43,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:43,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:17:43,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:43,906 INFO L87 Difference]: Start difference. First operand 12232 states and 18136 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:44,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:44,312 INFO L93 Difference]: Finished difference Result 22479 states and 33374 transitions. [2023-11-29 00:17:44,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:17:44,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-11-29 00:17:44,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:44,344 INFO L225 Difference]: With dead ends: 22479 [2023-11-29 00:17:44,344 INFO L226 Difference]: Without dead ends: 16972 [2023-11-29 00:17:44,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:17:44,355 INFO L413 NwaCegarLoop]: 1649 mSDtfsCounter, 1514 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:44,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:17:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16972 states. [2023-11-29 00:17:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16972 to 16970. [2023-11-29 00:17:44,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16970 states, 16968 states have (on average 1.4725365393682226) internal successors, (24986), 16969 states have internal predecessors, (24986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:44,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16970 states to 16970 states and 24986 transitions. [2023-11-29 00:17:44,872 INFO L78 Accepts]: Start accepts. Automaton has 16970 states and 24986 transitions. Word has length 80 [2023-11-29 00:17:44,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:44,872 INFO L495 AbstractCegarLoop]: Abstraction has 16970 states and 24986 transitions. [2023-11-29 00:17:44,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:44,872 INFO L276 IsEmpty]: Start isEmpty. Operand 16970 states and 24986 transitions. [2023-11-29 00:17:44,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:17:44,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:44,877 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:44,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:17:44,878 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:44,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:44,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1623175948, now seen corresponding path program 1 times [2023-11-29 00:17:44,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:44,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147938118] [2023-11-29 00:17:44,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:44,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:17:45,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:45,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147938118] [2023-11-29 00:17:45,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147938118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:45,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:45,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:17:45,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27228518] [2023-11-29 00:17:45,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:45,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:17:45,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:45,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:17:45,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:17:45,124 INFO L87 Difference]: Start difference. First operand 16970 states and 24986 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:47,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:47,341 INFO L93 Difference]: Finished difference Result 122522 states and 178786 transitions. [2023-11-29 00:17:47,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:17:47,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 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 100 [2023-11-29 00:17:47,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:47,489 INFO L225 Difference]: With dead ends: 122522 [2023-11-29 00:17:47,490 INFO L226 Difference]: Without dead ends: 107864 [2023-11-29 00:17:47,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:17:47,520 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 9884 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9884 SdHoareTripleChecker+Valid, 4373 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:47,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9884 Valid, 4373 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:17:47,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107864 states. [2023-11-29 00:17:48,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107864 to 31626. [2023-11-29 00:17:48,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31626 states, 31624 states have (on average 1.4599671135846193) internal successors, (46170), 31625 states have internal predecessors, (46170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:48,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31626 states to 31626 states and 46170 transitions. [2023-11-29 00:17:48,960 INFO L78 Accepts]: Start accepts. Automaton has 31626 states and 46170 transitions. Word has length 100 [2023-11-29 00:17:48,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:48,960 INFO L495 AbstractCegarLoop]: Abstraction has 31626 states and 46170 transitions. [2023-11-29 00:17:48,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:48,960 INFO L276 IsEmpty]: Start isEmpty. Operand 31626 states and 46170 transitions. [2023-11-29 00:17:48,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:17:48,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:48,966 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:48,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:17:48,966 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:48,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:48,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1212789260, now seen corresponding path program 1 times [2023-11-29 00:17:48,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:48,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688274723] [2023-11-29 00:17:48,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:48,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 00:17:49,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:49,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688274723] [2023-11-29 00:17:49,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688274723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:49,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:49,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:17:49,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352703816] [2023-11-29 00:17:49,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:49,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:17:49,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:49,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:17:49,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:17:49,206 INFO L87 Difference]: Start difference. First operand 31626 states and 46170 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:52,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:52,846 INFO L93 Difference]: Finished difference Result 137178 states and 199970 transitions. [2023-11-29 00:17:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:17:52,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 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 100 [2023-11-29 00:17:52,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:53,007 INFO L225 Difference]: With dead ends: 137178 [2023-11-29 00:17:53,007 INFO L226 Difference]: Without dead ends: 122520 [2023-11-29 00:17:53,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:17:53,049 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 9928 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9928 SdHoareTripleChecker+Valid, 4244 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:53,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9928 Valid, 4244 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:17:53,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122520 states. [2023-11-29 00:17:55,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122520 to 53642. [2023-11-29 00:17:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53642 states, 53640 states have (on average 1.4501491424310216) internal successors, (77786), 53641 states have internal predecessors, (77786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53642 states to 53642 states and 77786 transitions. [2023-11-29 00:17:55,101 INFO L78 Accepts]: Start accepts. Automaton has 53642 states and 77786 transitions. Word has length 100 [2023-11-29 00:17:55,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:55,101 INFO L495 AbstractCegarLoop]: Abstraction has 53642 states and 77786 transitions. [2023-11-29 00:17:55,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:55,101 INFO L276 IsEmpty]: Start isEmpty. Operand 53642 states and 77786 transitions. [2023-11-29 00:17:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:17:55,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:55,105 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:55,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:17:55,106 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:55,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:55,106 INFO L85 PathProgramCache]: Analyzing trace with hash 984150028, now seen corresponding path program 1 times [2023-11-29 00:17:55,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:55,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351382180] [2023-11-29 00:17:55,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:55,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 00:17:55,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:55,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351382180] [2023-11-29 00:17:55,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351382180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:55,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:55,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:17:55,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712936811] [2023-11-29 00:17:55,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:55,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:17:55,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:55,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:17:55,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:17:55,286 INFO L87 Difference]: Start difference. First operand 53642 states and 77786 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:59,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:59,534 INFO L93 Difference]: Finished difference Result 151834 states and 221154 transitions. [2023-11-29 00:17:59,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:17:59,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 00:17:59,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:59,701 INFO L225 Difference]: With dead ends: 151834 [2023-11-29 00:17:59,701 INFO L226 Difference]: Without dead ends: 137176 [2023-11-29 00:17:59,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:17:59,741 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 9995 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9995 SdHoareTripleChecker+Valid, 4277 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:59,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9995 Valid, 4277 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:17:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137176 states. [2023-11-29 00:18:02,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137176 to 68298. [2023-11-29 00:18:02,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68298 states, 68296 states have (on average 1.4491331849595877) internal successors, (98970), 68297 states have internal predecessors, (98970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68298 states to 68298 states and 98970 transitions. [2023-11-29 00:18:02,877 INFO L78 Accepts]: Start accepts. Automaton has 68298 states and 98970 transitions. Word has length 100 [2023-11-29 00:18:02,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:02,877 INFO L495 AbstractCegarLoop]: Abstraction has 68298 states and 98970 transitions. [2023-11-29 00:18:02,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 68298 states and 98970 transitions. [2023-11-29 00:18:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:18:02,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:02,881 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:02,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:18:02,882 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:02,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:02,882 INFO L85 PathProgramCache]: Analyzing trace with hash 358493964, now seen corresponding path program 1 times [2023-11-29 00:18:02,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:02,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602671175] [2023-11-29 00:18:02,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:02,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:03,065 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 00:18:03,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:03,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602671175] [2023-11-29 00:18:03,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602671175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:18:03,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:18:03,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:18:03,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377461224] [2023-11-29 00:18:03,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:18:03,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:18:03,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:03,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:18:03,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:18:03,067 INFO L87 Difference]: Start difference. First operand 68298 states and 98970 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:08,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:08,016 INFO L93 Difference]: Finished difference Result 166490 states and 242338 transitions. [2023-11-29 00:18:08,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:18:08,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 00:18:08,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:08,181 INFO L225 Difference]: With dead ends: 166490 [2023-11-29 00:18:08,182 INFO L226 Difference]: Without dead ends: 151832 [2023-11-29 00:18:08,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:18:08,210 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 10061 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10061 SdHoareTripleChecker+Valid, 4238 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:08,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10061 Valid, 4238 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:18:08,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151832 states. [2023-11-29 00:18:11,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151832 to 82954. [2023-11-29 00:18:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82954 states, 82952 states have (on average 1.4484762272157392) internal successors, (120154), 82953 states have internal predecessors, (120154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82954 states to 82954 states and 120154 transitions. [2023-11-29 00:18:11,682 INFO L78 Accepts]: Start accepts. Automaton has 82954 states and 120154 transitions. Word has length 100 [2023-11-29 00:18:11,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:11,683 INFO L495 AbstractCegarLoop]: Abstraction has 82954 states and 120154 transitions. [2023-11-29 00:18:11,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:11,683 INFO L276 IsEmpty]: Start isEmpty. Operand 82954 states and 120154 transitions. [2023-11-29 00:18:11,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:18:11,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:11,687 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:11,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 00:18:11,687 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:11,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:11,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1247227404, now seen corresponding path program 1 times [2023-11-29 00:18:11,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:11,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985811785] [2023-11-29 00:18:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:11,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:18:11,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:11,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985811785] [2023-11-29 00:18:11,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985811785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:18:11,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:18:11,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:18:11,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390169624] [2023-11-29 00:18:11,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:18:11,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:18:11,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:11,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:18:11,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:18:11,855 INFO L87 Difference]: Start difference. First operand 82954 states and 120154 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:17,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:17,234 INFO L93 Difference]: Finished difference Result 181146 states and 263522 transitions. [2023-11-29 00:18:17,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:18:17,234 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 00:18:17,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:17,392 INFO L225 Difference]: With dead ends: 181146 [2023-11-29 00:18:17,392 INFO L226 Difference]: Without dead ends: 166488 [2023-11-29 00:18:17,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:18:17,418 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 9919 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9919 SdHoareTripleChecker+Valid, 4297 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:17,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9919 Valid, 4297 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:18:17,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166488 states. [2023-11-29 00:18:20,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166488 to 97610. [2023-11-29 00:18:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97610 states, 97608 states have (on average 1.4480165560199985) internal successors, (141338), 97609 states have internal predecessors, (141338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:21,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97610 states to 97610 states and 141338 transitions. [2023-11-29 00:18:21,115 INFO L78 Accepts]: Start accepts. Automaton has 97610 states and 141338 transitions. Word has length 100 [2023-11-29 00:18:21,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:21,115 INFO L495 AbstractCegarLoop]: Abstraction has 97610 states and 141338 transitions. [2023-11-29 00:18:21,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:21,116 INFO L276 IsEmpty]: Start isEmpty. Operand 97610 states and 141338 transitions. [2023-11-29 00:18:21,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 00:18:21,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:21,119 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:21,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 00:18:21,120 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:21,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:21,120 INFO L85 PathProgramCache]: Analyzing trace with hash 944206092, now seen corresponding path program 1 times [2023-11-29 00:18:21,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:21,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299497495] [2023-11-29 00:18:21,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:21,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 00:18:21,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:21,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299497495] [2023-11-29 00:18:21,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299497495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:18:21,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:18:21,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:18:21,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146321659] [2023-11-29 00:18:21,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:18:21,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:18:21,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:21,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:18:21,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:18:21,328 INFO L87 Difference]: Start difference. First operand 97610 states and 141338 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:26,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:26,914 INFO L93 Difference]: Finished difference Result 195802 states and 284706 transitions. [2023-11-29 00:18:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:18:26,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 00:18:26,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:27,101 INFO L225 Difference]: With dead ends: 195802 [2023-11-29 00:18:27,102 INFO L226 Difference]: Without dead ends: 181144 [2023-11-29 00:18:27,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:18:27,128 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 9815 mSDsluCounter, 2828 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9815 SdHoareTripleChecker+Valid, 4494 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:27,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9815 Valid, 4494 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:18:27,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181144 states. [2023-11-29 00:18:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181144 to 112266. [2023-11-29 00:18:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112266 states, 112264 states have (on average 1.4476769044395355) internal successors, (162522), 112265 states have internal predecessors, (162522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:31,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112266 states to 112266 states and 162522 transitions. [2023-11-29 00:18:31,837 INFO L78 Accepts]: Start accepts. Automaton has 112266 states and 162522 transitions. Word has length 100 [2023-11-29 00:18:31,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:31,837 INFO L495 AbstractCegarLoop]: Abstraction has 112266 states and 162522 transitions. [2023-11-29 00:18:31,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:31,837 INFO L276 IsEmpty]: Start isEmpty. Operand 112266 states and 162522 transitions. [2023-11-29 00:18:31,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 00:18:31,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:31,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:31,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 00:18:31,846 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:31,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:31,846 INFO L85 PathProgramCache]: Analyzing trace with hash 676577140, now seen corresponding path program 1 times [2023-11-29 00:18:31,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:31,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452945224] [2023-11-29 00:18:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:31,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:31,956 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:31,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:31,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452945224] [2023-11-29 00:18:31,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452945224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:18:31,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:18:31,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:18:31,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2540788] [2023-11-29 00:18:31,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:18:31,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:18:31,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:31,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:18:31,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:18:31,959 INFO L87 Difference]: Start difference. First operand 112266 states and 162522 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:34,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:34,460 INFO L93 Difference]: Finished difference Result 189093 states and 274868 transitions. [2023-11-29 00:18:34,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:18:34,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2023-11-29 00:18:34,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:34,529 INFO L225 Difference]: With dead ends: 189093 [2023-11-29 00:18:34,529 INFO L226 Difference]: Without dead ends: 79139 [2023-11-29 00:18:34,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:18:34,568 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 66 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:34,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 3200 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:18:34,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79139 states. [2023-11-29 00:18:37,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79139 to 79137. [2023-11-29 00:18:37,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79137 states, 79135 states have (on average 1.4531244076578) internal successors, (114993), 79136 states have internal predecessors, (114993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:37,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79137 states to 79137 states and 114993 transitions. [2023-11-29 00:18:37,647 INFO L78 Accepts]: Start accepts. Automaton has 79137 states and 114993 transitions. Word has length 102 [2023-11-29 00:18:37,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:37,648 INFO L495 AbstractCegarLoop]: Abstraction has 79137 states and 114993 transitions. [2023-11-29 00:18:37,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 79137 states and 114993 transitions. [2023-11-29 00:18:37,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 00:18:37,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:37,650 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:37,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 00:18:37,650 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:37,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:37,651 INFO L85 PathProgramCache]: Analyzing trace with hash -488936975, now seen corresponding path program 1 times [2023-11-29 00:18:37,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:37,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044419709] [2023-11-29 00:18:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:37,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:18:37,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:37,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044419709] [2023-11-29 00:18:37,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044419709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:18:37,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:18:37,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:18:37,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935718460] [2023-11-29 00:18:37,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:18:37,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:18:37,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:37,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:18:37,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:18:37,803 INFO L87 Difference]: Start difference. First operand 79137 states and 114993 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:42,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:42,683 INFO L93 Difference]: Finished difference Result 150833 states and 219833 transitions. [2023-11-29 00:18:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:18:42,684 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 102 [2023-11-29 00:18:42,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:42,806 INFO L225 Difference]: With dead ends: 150833 [2023-11-29 00:18:42,806 INFO L226 Difference]: Without dead ends: 140591 [2023-11-29 00:18:42,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:18:42,822 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 9893 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9893 SdHoareTripleChecker+Valid, 4601 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:42,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9893 Valid, 4601 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:18:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140591 states. [2023-11-29 00:18:46,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140591 to 89377. [2023-11-29 00:18:46,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89377 states, 89375 states have (on average 1.4527664335664336) internal successors, (129841), 89376 states have internal predecessors, (129841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:46,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89377 states to 89377 states and 129841 transitions. [2023-11-29 00:18:46,796 INFO L78 Accepts]: Start accepts. Automaton has 89377 states and 129841 transitions. Word has length 102 [2023-11-29 00:18:46,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:46,796 INFO L495 AbstractCegarLoop]: Abstraction has 89377 states and 129841 transitions. [2023-11-29 00:18:46,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:46,796 INFO L276 IsEmpty]: Start isEmpty. Operand 89377 states and 129841 transitions. [2023-11-29 00:18:46,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 00:18:46,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:46,800 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:46,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 00:18:46,801 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:46,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:46,801 INFO L85 PathProgramCache]: Analyzing trace with hash 323183630, now seen corresponding path program 1 times [2023-11-29 00:18:46,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:46,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439311794] [2023-11-29 00:18:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:46,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:46,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:46,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439311794] [2023-11-29 00:18:46,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439311794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:18:46,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:18:46,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:18:46,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856859631] [2023-11-29 00:18:46,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:18:46,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:18:46,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:46,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:18:46,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:18:46,910 INFO L87 Difference]: Start difference. First operand 89377 states and 129841 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:48,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:48,582 INFO L93 Difference]: Finished difference Result 132901 states and 192947 transitions. [2023-11-29 00:18:48,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:18:48,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-11-29 00:18:48,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:48,618 INFO L225 Difference]: With dead ends: 132901 [2023-11-29 00:18:48,618 INFO L226 Difference]: Without dead ends: 45859 [2023-11-29 00:18:48,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:18:48,646 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 61 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:48,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3185 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:18:48,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45859 states. [2023-11-29 00:18:50,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45859 to 45857. [2023-11-29 00:18:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45857 states, 45855 states have (on average 1.4435285137934795) internal successors, (66193), 45856 states have internal predecessors, (66193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45857 states to 45857 states and 66193 transitions. [2023-11-29 00:18:50,474 INFO L78 Accepts]: Start accepts. Automaton has 45857 states and 66193 transitions. Word has length 103 [2023-11-29 00:18:50,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:50,474 INFO L495 AbstractCegarLoop]: Abstraction has 45857 states and 66193 transitions. [2023-11-29 00:18:50,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:50,474 INFO L276 IsEmpty]: Start isEmpty. Operand 45857 states and 66193 transitions. [2023-11-29 00:18:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 00:18:50,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:50,477 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:50,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 00:18:50,477 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:50,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:50,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1454227140, now seen corresponding path program 1 times [2023-11-29 00:18:50,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:50,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305876738] [2023-11-29 00:18:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:50,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:50,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:50,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305876738] [2023-11-29 00:18:50,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305876738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:18:50,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:18:50,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:18:50,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819167589] [2023-11-29 00:18:50,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:18:50,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:18:50,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:50,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:18:50,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:18:50,586 INFO L87 Difference]: Start difference. First operand 45857 states and 66193 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2023-11-29 00:18:51,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:51,543 INFO L93 Difference]: Finished difference Result 67621 states and 97475 transitions. [2023-11-29 00:18:51,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:18:51,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) Word has length 105 [2023-11-29 00:18:51,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:51,561 INFO L225 Difference]: With dead ends: 67621 [2023-11-29 00:18:51,561 INFO L226 Difference]: Without dead ends: 24099 [2023-11-29 00:18:51,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:18:51,579 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 58 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:51,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3170 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:18:51,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24099 states. [2023-11-29 00:18:52,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24099 to 24097. [2023-11-29 00:18:52,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24097 states, 24095 states have (on average 1.4376841668395932) internal successors, (34641), 24096 states have internal predecessors, (34641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24097 states to 24097 states and 34641 transitions. [2023-11-29 00:18:52,520 INFO L78 Accepts]: Start accepts. Automaton has 24097 states and 34641 transitions. Word has length 105 [2023-11-29 00:18:52,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:52,520 INFO L495 AbstractCegarLoop]: Abstraction has 24097 states and 34641 transitions. [2023-11-29 00:18:52,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2023-11-29 00:18:52,520 INFO L276 IsEmpty]: Start isEmpty. Operand 24097 states and 34641 transitions. [2023-11-29 00:18:52,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 00:18:52,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:52,522 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:52,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 00:18:52,522 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:52,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:52,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1420709910, now seen corresponding path program 1 times [2023-11-29 00:18:52,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:52,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985625927] [2023-11-29 00:18:52,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:52,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:52,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:52,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985625927] [2023-11-29 00:18:52,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985625927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:18:52,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:18:52,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:18:52,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353750354] [2023-11-29 00:18:52,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:18:52,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:18:52,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:52,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:18:52,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:18:52,631 INFO L87 Difference]: Start difference. First operand 24097 states and 34641 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:53,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:53,083 INFO L93 Difference]: Finished difference Result 34981 states and 50147 transitions. [2023-11-29 00:18:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:18:53,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-11-29 00:18:53,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:53,093 INFO L225 Difference]: With dead ends: 34981 [2023-11-29 00:18:53,094 INFO L226 Difference]: Without dead ends: 13219 [2023-11-29 00:18:53,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:18:53,102 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 55 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:53,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3155 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:18:53,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13219 states. [2023-11-29 00:18:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13219 to 13217. [2023-11-29 00:18:53,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13217 states, 13215 states have (on average 1.4378357926598562) internal successors, (19001), 13216 states have internal predecessors, (19001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13217 states to 13217 states and 19001 transitions. [2023-11-29 00:18:53,641 INFO L78 Accepts]: Start accepts. Automaton has 13217 states and 19001 transitions. Word has length 107 [2023-11-29 00:18:53,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:53,642 INFO L495 AbstractCegarLoop]: Abstraction has 13217 states and 19001 transitions. [2023-11-29 00:18:53,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 13217 states and 19001 transitions. [2023-11-29 00:18:53,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 00:18:53,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:53,644 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:53,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 00:18:53,644 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:53,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:53,644 INFO L85 PathProgramCache]: Analyzing trace with hash 736661528, now seen corresponding path program 1 times [2023-11-29 00:18:53,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:53,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518787333] [2023-11-29 00:18:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:53,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:53,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:53,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518787333] [2023-11-29 00:18:53,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518787333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:18:53,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:18:53,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:18:53,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879000133] [2023-11-29 00:18:53,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:18:53,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:18:53,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:53,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:18:53,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:18:53,774 INFO L87 Difference]: Start difference. First operand 13217 states and 19001 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:54,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:54,081 INFO L93 Difference]: Finished difference Result 18661 states and 26687 transitions. [2023-11-29 00:18:54,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:18:54,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-11-29 00:18:54,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:54,088 INFO L225 Difference]: With dead ends: 18661 [2023-11-29 00:18:54,088 INFO L226 Difference]: Without dead ends: 7779 [2023-11-29 00:18:54,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:18:54,094 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 52 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:54,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:18:54,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7779 states. [2023-11-29 00:18:54,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7779 to 7777. [2023-11-29 00:18:54,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7777 states, 7775 states have (on average 1.4468167202572346) internal successors, (11249), 7776 states have internal predecessors, (11249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:54,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7777 states to 7777 states and 11249 transitions. [2023-11-29 00:18:54,370 INFO L78 Accepts]: Start accepts. Automaton has 7777 states and 11249 transitions. Word has length 109 [2023-11-29 00:18:54,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:54,370 INFO L495 AbstractCegarLoop]: Abstraction has 7777 states and 11249 transitions. [2023-11-29 00:18:54,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:54,370 INFO L276 IsEmpty]: Start isEmpty. Operand 7777 states and 11249 transitions. [2023-11-29 00:18:54,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 00:18:54,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:54,371 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:54,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 00:18:54,372 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:54,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash 265667014, now seen corresponding path program 1 times [2023-11-29 00:18:54,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:54,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035937897] [2023-11-29 00:18:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:54,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:54,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:54,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035937897] [2023-11-29 00:18:54,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035937897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:18:54,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:18:54,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:18:54,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688037824] [2023-11-29 00:18:54,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:18:54,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:18:54,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:54,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:18:54,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:18:54,467 INFO L87 Difference]: Start difference. First operand 7777 states and 11249 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:54,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:54,645 INFO L93 Difference]: Finished difference Result 10501 states and 15059 transitions. [2023-11-29 00:18:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:18:54,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 [2023-11-29 00:18:54,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:54,649 INFO L225 Difference]: With dead ends: 10501 [2023-11-29 00:18:54,650 INFO L226 Difference]: Without dead ends: 5059 [2023-11-29 00:18:54,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:18:54,652 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 49 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:54,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3125 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:18:54,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5059 states. [2023-11-29 00:18:54,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5059 to 5057. [2023-11-29 00:18:54,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5057 states, 5055 states have (on average 1.4652818991097922) internal successors, (7407), 5056 states have internal predecessors, (7407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:54,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5057 states to 5057 states and 7407 transitions. [2023-11-29 00:18:54,777 INFO L78 Accepts]: Start accepts. Automaton has 5057 states and 7407 transitions. Word has length 111 [2023-11-29 00:18:54,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:54,778 INFO L495 AbstractCegarLoop]: Abstraction has 5057 states and 7407 transitions. [2023-11-29 00:18:54,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:54,778 INFO L276 IsEmpty]: Start isEmpty. Operand 5057 states and 7407 transitions. [2023-11-29 00:18:54,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 00:18:54,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:54,779 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:54,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 00:18:54,779 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:54,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:54,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1141889804, now seen corresponding path program 1 times [2023-11-29 00:18:54,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:54,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465706114] [2023-11-29 00:18:54,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:54,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:54,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:54,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465706114] [2023-11-29 00:18:54,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465706114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:18:54,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:18:54,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:18:54,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256296587] [2023-11-29 00:18:54,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:18:54,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:18:54,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:54,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:18:54,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:18:54,872 INFO L87 Difference]: Start difference. First operand 5057 states and 7407 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:54,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:54,948 INFO L93 Difference]: Finished difference Result 6421 states and 9296 transitions. [2023-11-29 00:18:54,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:18:54,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 [2023-11-29 00:18:54,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:54,952 INFO L225 Difference]: With dead ends: 6421 [2023-11-29 00:18:54,952 INFO L226 Difference]: Without dead ends: 3699 [2023-11-29 00:18:54,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:18:54,954 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 46 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:54,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3110 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:18:54,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2023-11-29 00:18:55,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3697. [2023-11-29 00:18:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3695 states have (on average 1.4893098782138023) internal successors, (5503), 3696 states have internal predecessors, (5503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5503 transitions. [2023-11-29 00:18:55,028 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5503 transitions. Word has length 113 [2023-11-29 00:18:55,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:55,029 INFO L495 AbstractCegarLoop]: Abstraction has 3697 states and 5503 transitions. [2023-11-29 00:18:55,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5503 transitions. [2023-11-29 00:18:55,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 00:18:55,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:55,030 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:55,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 00:18:55,030 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:55,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:55,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1126603170, now seen corresponding path program 1 times [2023-11-29 00:18:55,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:55,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801827480] [2023-11-29 00:18:55,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:55,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:18:55,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:55,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801827480] [2023-11-29 00:18:55,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801827480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:18:55,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44518184] [2023-11-29 00:18:55,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:55,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:18:55,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:18:55,887 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:18:55,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:18:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:56,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:18:56,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:18:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:18:56,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:18:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:18:56,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44518184] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:18:56,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:18:56,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-11-29 00:18:56,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710882901] [2023-11-29 00:18:56,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:18:56,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 00:18:56,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:56,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 00:18:56,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:18:56,461 INFO L87 Difference]: Start difference. First operand 3697 states and 5503 transitions. Second operand has 17 states, 17 states have (on average 19.470588235294116) internal successors, (331), 17 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:59,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:59,163 INFO L93 Difference]: Finished difference Result 14950 states and 20769 transitions. [2023-11-29 00:18:59,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 00:18:59,163 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 19.470588235294116) internal successors, (331), 17 states have internal predecessors, (331), 0 states have call successors, (0), 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 [2023-11-29 00:18:59,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:59,172 INFO L225 Difference]: With dead ends: 14950 [2023-11-29 00:18:59,172 INFO L226 Difference]: Without dead ends: 13588 [2023-11-29 00:18:59,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=720, Invalid=3062, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 00:18:59,177 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 18311 mSDsluCounter, 5054 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18311 SdHoareTripleChecker+Valid, 6596 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:59,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18311 Valid, 6596 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:18:59,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13588 states. [2023-11-29 00:18:59,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13588 to 13200. [2023-11-29 00:18:59,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13200 states, 13198 states have (on average 1.3649795423549023) internal successors, (18015), 13199 states have internal predecessors, (18015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13200 states to 13200 states and 18015 transitions. [2023-11-29 00:18:59,659 INFO L78 Accepts]: Start accepts. Automaton has 13200 states and 18015 transitions. Word has length 115 [2023-11-29 00:18:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:59,659 INFO L495 AbstractCegarLoop]: Abstraction has 13200 states and 18015 transitions. [2023-11-29 00:18:59,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.470588235294116) internal successors, (331), 17 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 13200 states and 18015 transitions. [2023-11-29 00:18:59,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 00:18:59,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:59,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:18:59,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:18:59,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 00:18:59,861 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:59,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:59,862 INFO L85 PathProgramCache]: Analyzing trace with hash 630724613, now seen corresponding path program 1 times [2023-11-29 00:18:59,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:59,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49460539] [2023-11-29 00:18:59,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:59,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:00,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:19:00,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49460539] [2023-11-29 00:19:00,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49460539] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:19:00,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817543188] [2023-11-29 00:19:00,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:19:00,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:19:00,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:19:00,601 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:19:00,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:19:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:00,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:19:00,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:19:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:01,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:19:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:02,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817543188] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:19:02,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:19:02,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2023-11-29 00:19:02,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242398175] [2023-11-29 00:19:02,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:19:02,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 00:19:02,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:19:02,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 00:19:02,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:19:02,256 INFO L87 Difference]: Start difference. First operand 13200 states and 18015 transitions. Second operand has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 27 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) [2023-11-29 00:19:04,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:19:04,935 INFO L93 Difference]: Finished difference Result 43546 states and 58393 transitions. [2023-11-29 00:19:04,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 00:19:04,935 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 27 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 116 [2023-11-29 00:19:04,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:19:04,958 INFO L225 Difference]: With dead ends: 43546 [2023-11-29 00:19:04,959 INFO L226 Difference]: Without dead ends: 32801 [2023-11-29 00:19:04,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=926, Invalid=3904, Unknown=0, NotChecked=0, Total=4830 [2023-11-29 00:19:04,969 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 22085 mSDsluCounter, 8510 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22085 SdHoareTripleChecker+Valid, 10053 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:19:04,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22085 Valid, 10053 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:19:04,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32801 states. [2023-11-29 00:19:05,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32801 to 24411. [2023-11-29 00:19:05,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24411 states, 24409 states have (on average 1.331762874349625) internal successors, (32507), 24410 states have internal predecessors, (32507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:05,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24411 states to 24411 states and 32507 transitions. [2023-11-29 00:19:05,938 INFO L78 Accepts]: Start accepts. Automaton has 24411 states and 32507 transitions. Word has length 116 [2023-11-29 00:19:05,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:19:05,938 INFO L495 AbstractCegarLoop]: Abstraction has 24411 states and 32507 transitions. [2023-11-29 00:19:05,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 27 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) [2023-11-29 00:19:05,939 INFO L276 IsEmpty]: Start isEmpty. Operand 24411 states and 32507 transitions. [2023-11-29 00:19:05,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 00:19:05,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:19:05,940 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:19:05,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:19:06,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:19:06,141 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:19:06,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:19:06,141 INFO L85 PathProgramCache]: Analyzing trace with hash -583933101, now seen corresponding path program 1 times [2023-11-29 00:19:06,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:19:06,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40958172] [2023-11-29 00:19:06,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:19:06,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:19:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:06,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:19:06,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40958172] [2023-11-29 00:19:06,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40958172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:19:06,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684088929] [2023-11-29 00:19:06,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:19:06,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:19:06,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:19:06,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:19:06,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:19:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:06,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:19:06,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:19:07,165 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:07,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:19:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:08,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684088929] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:19:08,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:19:08,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-11-29 00:19:08,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561455751] [2023-11-29 00:19:08,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:19:08,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 00:19:08,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:19:08,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 00:19:08,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-11-29 00:19:08,899 INFO L87 Difference]: Start difference. First operand 24411 states and 32507 transitions. Second operand has 27 states, 27 states have (on average 11.37037037037037) internal successors, (307), 27 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:19:11,240 INFO L93 Difference]: Finished difference Result 66435 states and 86978 transitions. [2023-11-29 00:19:11,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:19:11,241 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 11.37037037037037) internal successors, (307), 27 states have internal predecessors, (307), 0 states have call successors, (0), 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 116 [2023-11-29 00:19:11,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:19:11,278 INFO L225 Difference]: With dead ends: 66435 [2023-11-29 00:19:11,278 INFO L226 Difference]: Without dead ends: 45109 [2023-11-29 00:19:11,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=313, Invalid=1169, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 00:19:11,295 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 13894 mSDsluCounter, 6709 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13894 SdHoareTripleChecker+Valid, 8249 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:19:11,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13894 Valid, 8249 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:19:11,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45109 states. [2023-11-29 00:19:13,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45109 to 44001. [2023-11-29 00:19:13,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44001 states, 43999 states have (on average 1.3133934862155958) internal successors, (57788), 44000 states have internal predecessors, (57788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:13,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44001 states to 44001 states and 57788 transitions. [2023-11-29 00:19:13,730 INFO L78 Accepts]: Start accepts. Automaton has 44001 states and 57788 transitions. Word has length 116 [2023-11-29 00:19:13,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:19:13,731 INFO L495 AbstractCegarLoop]: Abstraction has 44001 states and 57788 transitions. [2023-11-29 00:19:13,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.37037037037037) internal successors, (307), 27 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:13,731 INFO L276 IsEmpty]: Start isEmpty. Operand 44001 states and 57788 transitions. [2023-11-29 00:19:13,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 00:19:13,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:19:13,733 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:19:13,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:19:13,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 00:19:13,933 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:19:13,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:19:13,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1406076224, now seen corresponding path program 1 times [2023-11-29 00:19:13,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:19:13,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626130373] [2023-11-29 00:19:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:19:13,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:19:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:14,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:19:14,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626130373] [2023-11-29 00:19:14,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626130373] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:19:14,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537199156] [2023-11-29 00:19:14,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:19:14,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:19:14,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:19:14,289 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:19:14,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:19:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:14,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:19:14,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:19:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:14,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:19:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:15,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537199156] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:19:15,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:19:15,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-11-29 00:19:15,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825334721] [2023-11-29 00:19:15,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:19:15,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 00:19:15,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:19:15,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 00:19:15,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2023-11-29 00:19:15,989 INFO L87 Difference]: Start difference. First operand 44001 states and 57788 transitions. Second operand has 26 states, 26 states have (on average 12.26923076923077) internal successors, (319), 25 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) [2023-11-29 00:19:24,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:19:24,324 INFO L93 Difference]: Finished difference Result 213831 states and 277836 transitions. [2023-11-29 00:19:24,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 00:19:24,325 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.26923076923077) internal successors, (319), 25 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 117 [2023-11-29 00:19:24,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:19:24,457 INFO L225 Difference]: With dead ends: 213831 [2023-11-29 00:19:24,457 INFO L226 Difference]: Without dead ends: 172721 [2023-11-29 00:19:24,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=656, Invalid=2536, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 00:19:24,478 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 20767 mSDsluCounter, 7067 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20767 SdHoareTripleChecker+Valid, 8637 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:19:24,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20767 Valid, 8637 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:19:24,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172721 states. [2023-11-29 00:19:32,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172721 to 165305. [2023-11-29 00:19:32,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165305 states, 165303 states have (on average 1.276443863692734) internal successors, (211000), 165304 states have internal predecessors, (211000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:32,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165305 states to 165305 states and 211000 transitions. [2023-11-29 00:19:32,573 INFO L78 Accepts]: Start accepts. Automaton has 165305 states and 211000 transitions. Word has length 117 [2023-11-29 00:19:32,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:19:32,573 INFO L495 AbstractCegarLoop]: Abstraction has 165305 states and 211000 transitions. [2023-11-29 00:19:32,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.26923076923077) internal successors, (319), 25 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) [2023-11-29 00:19:32,573 INFO L276 IsEmpty]: Start isEmpty. Operand 165305 states and 211000 transitions. [2023-11-29 00:19:32,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 00:19:32,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:19:32,577 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:19:32,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:19:32,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 00:19:32,777 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:19:32,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:19:32,778 INFO L85 PathProgramCache]: Analyzing trace with hash -435047532, now seen corresponding path program 1 times [2023-11-29 00:19:32,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:19:32,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529786809] [2023-11-29 00:19:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:19:32,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:19:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:32,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:19:32,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529786809] [2023-11-29 00:19:32,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529786809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:19:32,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:19:32,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:19:32,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907906024] [2023-11-29 00:19:32,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:19:32,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:19:32,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:19:32,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:19:32,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:19:32,899 INFO L87 Difference]: Start difference. First operand 165305 states and 211000 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:43,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:19:43,496 INFO L93 Difference]: Finished difference Result 169101 states and 217364 transitions. [2023-11-29 00:19:43,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:19:43,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2023-11-29 00:19:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:19:43,621 INFO L225 Difference]: With dead ends: 169101 [2023-11-29 00:19:43,621 INFO L226 Difference]: Without dead ends: 166809 [2023-11-29 00:19:43,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:19:43,637 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 848 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 3102 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 3830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:19:43,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 971 Invalid, 3830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3102 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 00:19:43,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166809 states. [2023-11-29 00:19:51,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166809 to 166807. [2023-11-29 00:19:51,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166807 states, 166805 states have (on average 1.2744701897425137) internal successors, (212588), 166806 states have internal predecessors, (212588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166807 states to 166807 states and 212588 transitions. [2023-11-29 00:19:51,455 INFO L78 Accepts]: Start accepts. Automaton has 166807 states and 212588 transitions. Word has length 118 [2023-11-29 00:19:51,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:19:51,455 INFO L495 AbstractCegarLoop]: Abstraction has 166807 states and 212588 transitions. [2023-11-29 00:19:51,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:19:51,455 INFO L276 IsEmpty]: Start isEmpty. Operand 166807 states and 212588 transitions. [2023-11-29 00:19:51,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 00:19:51,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:19:51,458 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:19:51,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 00:19:51,458 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:19:51,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:19:51,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1385367079, now seen corresponding path program 1 times [2023-11-29 00:19:51,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:19:51,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140907052] [2023-11-29 00:19:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:19:51,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:19:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:51,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:19:51,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140907052] [2023-11-29 00:19:51,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140907052] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:19:51,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406377754] [2023-11-29 00:19:51,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:19:51,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:19:51,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:19:51,817 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:19:51,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:19:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:19:51,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:19:51,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:19:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:52,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:19:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:19:54,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406377754] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:19:54,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:19:54,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-29 00:19:54,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398717637] [2023-11-29 00:19:54,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:19:54,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 00:19:54,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:19:54,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 00:19:54,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:19:54,276 INFO L87 Difference]: Start difference. First operand 166807 states and 212588 transitions. Second operand has 28 states, 28 states have (on average 11.75) internal successors, (329), 28 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:08,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:20:08,649 INFO L93 Difference]: Finished difference Result 494064 states and 627943 transitions. [2023-11-29 00:20:08,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 00:20:08,650 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.75) internal successors, (329), 28 states have internal predecessors, (329), 0 states have call successors, (0), 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 118 [2023-11-29 00:20:08,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:20:09,151 INFO L225 Difference]: With dead ends: 494064 [2023-11-29 00:20:09,151 INFO L226 Difference]: Without dead ends: 351294 [2023-11-29 00:20:09,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=428, Invalid=1378, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 00:20:09,201 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 18136 mSDsluCounter, 6435 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18136 SdHoareTripleChecker+Valid, 7943 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:20:09,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18136 Valid, 7943 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:20:09,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351294 states. [2023-11-29 00:20:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351294 to 332866. [2023-11-29 00:20:24,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332866 states, 332864 states have (on average 1.2598148192655259) internal successors, (419347), 332865 states have internal predecessors, (419347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:25,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332866 states to 332866 states and 419347 transitions. [2023-11-29 00:20:25,562 INFO L78 Accepts]: Start accepts. Automaton has 332866 states and 419347 transitions. Word has length 118 [2023-11-29 00:20:25,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:20:25,563 INFO L495 AbstractCegarLoop]: Abstraction has 332866 states and 419347 transitions. [2023-11-29 00:20:25,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.75) internal successors, (329), 28 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:25,563 INFO L276 IsEmpty]: Start isEmpty. Operand 332866 states and 419347 transitions. [2023-11-29 00:20:25,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 00:20:25,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:20:25,568 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:20:25,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:20:25,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 00:20:25,768 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:20:25,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:20:25,769 INFO L85 PathProgramCache]: Analyzing trace with hash -251020096, now seen corresponding path program 1 times [2023-11-29 00:20:25,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:20:25,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017666776] [2023-11-29 00:20:25,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:20:25,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:20:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:20:26,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:20:26,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017666776] [2023-11-29 00:20:26,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017666776] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:20:26,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263672743] [2023-11-29 00:20:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:20:26,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:20:26,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:20:26,359 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:20:26,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:20:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:20:26,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:20:26,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:20:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:20:27,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:20:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:20:28,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263672743] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:20:28,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:20:28,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-29 00:20:28,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330325062] [2023-11-29 00:20:28,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:20:28,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 00:20:28,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:20:28,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 00:20:28,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:20:28,995 INFO L87 Difference]: Start difference. First operand 332866 states and 419347 transitions. Second operand has 28 states, 28 states have (on average 12.142857142857142) internal successors, (340), 28 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:20:43,905 INFO L93 Difference]: Finished difference Result 630023 states and 791518 transitions. [2023-11-29 00:20:43,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 00:20:43,905 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 12.142857142857142) internal successors, (340), 28 states have internal predecessors, (340), 0 states have call successors, (0), 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 119 [2023-11-29 00:20:43,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:20:44,385 INFO L225 Difference]: With dead ends: 630023 [2023-11-29 00:20:44,385 INFO L226 Difference]: Without dead ends: 353150 [2023-11-29 00:20:44,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 00:20:44,488 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 17701 mSDsluCounter, 4807 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17701 SdHoareTripleChecker+Valid, 6310 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:20:44,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17701 Valid, 6310 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:20:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353150 states. [2023-11-29 00:21:00,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353150 to 292194. [2023-11-29 00:21:00,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292194 states, 292192 states have (on average 1.242922461942832) internal successors, (363172), 292193 states have internal predecessors, (363172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292194 states to 292194 states and 363172 transitions. [2023-11-29 00:21:01,352 INFO L78 Accepts]: Start accepts. Automaton has 292194 states and 363172 transitions. Word has length 119 [2023-11-29 00:21:01,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:01,353 INFO L495 AbstractCegarLoop]: Abstraction has 292194 states and 363172 transitions. [2023-11-29 00:21:01,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.142857142857142) internal successors, (340), 28 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 292194 states and 363172 transitions. [2023-11-29 00:21:01,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 00:21:01,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:01,358 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:01,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:21:01,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 00:21:01,559 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:21:01,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:01,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1222665943, now seen corresponding path program 1 times [2023-11-29 00:21:01,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:21:01,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289506422] [2023-11-29 00:21:01,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:01,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:21:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:01,800 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:21:01,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:21:01,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289506422] [2023-11-29 00:21:01,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289506422] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:21:01,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694213251] [2023-11-29 00:21:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:01,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:01,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:21:01,802 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:21:01,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:21:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:01,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:21:01,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:21:02,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:21:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:21:03,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694213251] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:21:03,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:21:03,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-11-29 00:21:03,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713005516] [2023-11-29 00:21:03,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:21:03,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:21:03,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:21:03,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:21:03,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:21:03,437 INFO L87 Difference]: Start difference. First operand 292194 states and 363172 transitions. Second operand has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 22 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:32,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:32,002 INFO L93 Difference]: Finished difference Result 864698 states and 1075360 transitions. [2023-11-29 00:21:32,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:21:32,002 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 22 states have internal predecessors, (279), 0 states have call successors, (0), 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 120 [2023-11-29 00:21:32,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:32,812 INFO L225 Difference]: With dead ends: 864698 [2023-11-29 00:21:32,812 INFO L226 Difference]: Without dead ends: 605611 [2023-11-29 00:21:32,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 00:21:32,938 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 10538 mSDsluCounter, 3269 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10538 SdHoareTripleChecker+Valid, 4787 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:32,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10538 Valid, 4787 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:21:33,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605611 states. [2023-11-29 00:22:03,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605611 to 584871. [2023-11-29 00:22:04,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584871 states, 584869 states have (on average 1.232527283887503) internal successors, (720867), 584870 states have internal predecessors, (720867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:22:05,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584871 states to 584871 states and 720867 transitions. [2023-11-29 00:22:05,009 INFO L78 Accepts]: Start accepts. Automaton has 584871 states and 720867 transitions. Word has length 120 [2023-11-29 00:22:05,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:05,009 INFO L495 AbstractCegarLoop]: Abstraction has 584871 states and 720867 transitions. [2023-11-29 00:22:05,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 22 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:22:05,010 INFO L276 IsEmpty]: Start isEmpty. Operand 584871 states and 720867 transitions. [2023-11-29 00:22:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 00:22:05,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:05,018 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:05,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:22:05,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 00:22:05,219 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:22:05,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:05,220 INFO L85 PathProgramCache]: Analyzing trace with hash -199989600, now seen corresponding path program 1 times [2023-11-29 00:22:05,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:22:05,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330726072] [2023-11-29 00:22:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:05,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:22:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:07,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:22:07,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330726072] [2023-11-29 00:22:07,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330726072] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:22:07,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634133992] [2023-11-29 00:22:07,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:07,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:22:07,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:22:07,401 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:22:07,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:22:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:07,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:22:07,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:08,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:10,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634133992] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:10,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:22:10,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 41 [2023-11-29 00:22:10,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597988435] [2023-11-29 00:22:10,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:10,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 00:22:10,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:22:10,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 00:22:10,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1508, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 00:22:10,176 INFO L87 Difference]: Start difference. First operand 584871 states and 720867 transitions. Second operand has 41 states, 41 states have (on average 7.902439024390244) internal successors, (324), 41 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:31,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:31,322 INFO L93 Difference]: Finished difference Result 1918305 states and 2364853 transitions. [2023-11-29 00:24:31,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 360 states. [2023-11-29 00:24:31,322 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.902439024390244) internal successors, (324), 41 states have internal predecessors, (324), 0 states have call successors, (0), 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 121 [2023-11-29 00:24:31,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:33,757 INFO L225 Difference]: With dead ends: 1918305 [2023-11-29 00:24:33,757 INFO L226 Difference]: Without dead ends: 1746279 [2023-11-29 00:24:34,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71802 ImplicationChecksByTransitivity, 49.8s TimeCoverageRelationStatistics Valid=20388, Invalid=137618, Unknown=0, NotChecked=0, Total=158006 [2023-11-29 00:24:34,059 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 33373 mSDsluCounter, 28314 mSDsCounter, 0 mSdLazyCounter, 6275 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33373 SdHoareTripleChecker+Valid, 29946 SdHoareTripleChecker+Invalid, 6575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 6275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:24:34,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33373 Valid, 29946 Invalid, 6575 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [300 Valid, 6275 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-29 00:24:35,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746279 states. [2023-11-29 00:25:26,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746279 to 730087. [2023-11-29 00:25:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730087 states, 730085 states have (on average 1.2344946136408774) internal successors, (901286), 730086 states have internal predecessors, (901286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:28,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730087 states to 730087 states and 901286 transitions. [2023-11-29 00:25:28,927 INFO L78 Accepts]: Start accepts. Automaton has 730087 states and 901286 transitions. Word has length 121 [2023-11-29 00:25:28,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:25:28,928 INFO L495 AbstractCegarLoop]: Abstraction has 730087 states and 901286 transitions. [2023-11-29 00:25:28,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.902439024390244) internal successors, (324), 41 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 730087 states and 901286 transitions. [2023-11-29 00:25:28,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 00:25:28,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:25:28,935 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:25:28,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:25:29,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 00:25:29,136 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:25:29,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:25:29,137 INFO L85 PathProgramCache]: Analyzing trace with hash 651259880, now seen corresponding path program 1 times [2023-11-29 00:25:29,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:25:29,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089993266] [2023-11-29 00:25:29,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:25:29,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:25:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:25:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:25:29,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:25:29,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089993266] [2023-11-29 00:25:29,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089993266] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:25:29,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114623162] [2023-11-29 00:25:29,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:25:29,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:25:29,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:25:29,917 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:25:29,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:25:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:25:30,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:25:30,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:25:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:25:31,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:25:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:25:32,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114623162] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:25:32,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:25:32,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 15] total 35 [2023-11-29 00:25:32,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537090829] [2023-11-29 00:25:32,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:25:32,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 00:25:32,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:25:32,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 00:25:32,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1015, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 00:25:32,673 INFO L87 Difference]: Start difference. First operand 730087 states and 901286 transitions. Second operand has 35 states, 35 states have (on average 9.542857142857143) internal successors, (334), 35 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:26:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:26:22,859 INFO L93 Difference]: Finished difference Result 997121 states and 1221045 transitions. [2023-11-29 00:26:22,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 00:26:22,860 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 9.542857142857143) internal successors, (334), 35 states have internal predecessors, (334), 0 states have call successors, (0), 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 121 [2023-11-29 00:26:22,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:26:23,860 INFO L225 Difference]: With dead ends: 997121 [2023-11-29 00:26:23,860 INFO L226 Difference]: Without dead ends: 815913 [2023-11-29 00:26:23,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=740, Invalid=2566, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 00:26:24,000 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 10223 mSDsluCounter, 13594 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10223 SdHoareTripleChecker+Valid, 15093 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:26:24,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10223 Valid, 15093 Invalid, 954 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:26:24,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815913 states. [2023-11-29 00:27:09,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815913 to 682287. [2023-11-29 00:27:10,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682287 states, 682285 states have (on average 1.2322006199755233) internal successors, (840712), 682286 states have internal predecessors, (840712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:27:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682287 states to 682287 states and 840712 transitions. [2023-11-29 00:27:11,696 INFO L78 Accepts]: Start accepts. Automaton has 682287 states and 840712 transitions. Word has length 121 [2023-11-29 00:27:11,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:11,697 INFO L495 AbstractCegarLoop]: Abstraction has 682287 states and 840712 transitions. [2023-11-29 00:27:11,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.542857142857143) internal successors, (334), 35 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:27:11,697 INFO L276 IsEmpty]: Start isEmpty. Operand 682287 states and 840712 transitions. [2023-11-29 00:27:11,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 00:27:11,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:11,704 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:11,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:27:11,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 00:27:11,904 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:27:11,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:11,905 INFO L85 PathProgramCache]: Analyzing trace with hash 695297696, now seen corresponding path program 1 times [2023-11-29 00:27:11,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:11,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736962107] [2023-11-29 00:27:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:11,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:27:13,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:13,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736962107] [2023-11-29 00:27:13,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736962107] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:27:13,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576368303] [2023-11-29 00:27:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:13,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:13,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:13,176 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:13,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de6ec3f3-1df1-42fa-a51e-f02272a24d74/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:27:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:13,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:27:13,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:27:14,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:27:15,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576368303] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:27:15,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:27:15,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2023-11-29 00:27:15,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050466220] [2023-11-29 00:27:15,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:15,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 00:27:15,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:15,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 00:27:15,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-11-29 00:27:15,916 INFO L87 Difference]: Start difference. First operand 682287 states and 840712 transitions. Second operand has 32 states, 32 states have (on average 9.75) internal successors, (312), 32 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:47,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:47,555 INFO L93 Difference]: Finished difference Result 1619828 states and 2000167 transitions. [2023-11-29 00:28:47,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 00:28:47,556 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.75) internal successors, (312), 32 states have internal predecessors, (312), 0 states have call successors, (0), 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 121 [2023-11-29 00:28:47,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:49,450 INFO L225 Difference]: With dead ends: 1619828 [2023-11-29 00:28:49,450 INFO L226 Difference]: Without dead ends: 1434792 [2023-11-29 00:28:49,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=812, Invalid=3220, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 00:28:49,711 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 13332 mSDsluCounter, 14060 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13332 SdHoareTripleChecker+Valid, 15569 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:49,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13332 Valid, 15569 Invalid, 1424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 00:28:50,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434792 states.