./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.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_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/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_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/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_bfb6ddd4-8069-4830-817f-dc501d1f2e66/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 7f21ea595eac4353ca417fd812da6cdd2e6031060e3844060c8f8fe5fbe20b17 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:18:33,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:18:33,434 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:18:33,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:18:33,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:18:33,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:18:33,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:18:33,462 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:18:33,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:18:33,463 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:18:33,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:18:33,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:18:33,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:18:33,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:18:33,466 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:18:33,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:18:33,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:18:33,468 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:18:33,468 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:18:33,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:18:33,469 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:18:33,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:18:33,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:18:33,473 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:18:33,474 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:18:33,474 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:18:33,474 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:18:33,475 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:18:33,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:18:33,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:18:33,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:18:33,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:18:33,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:18:33,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:18:33,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:18:33,477 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:18:33,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:18:33,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:18:33,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:18:33,478 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:18:33,478 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:18:33,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:18:33,479 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_bfb6ddd4-8069-4830-817f-dc501d1f2e66/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f21ea595eac4353ca417fd812da6cdd2e6031060e3844060c8f8fe5fbe20b17 [2023-11-29 05:18:33,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:18:33,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:18:33,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:18:33,747 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:18:33,747 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:18:33,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c [2023-11-29 05:18:36,505 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:18:36,887 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:18:36,887 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c [2023-11-29 05:18:36,917 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/data/fea7f9d39/df7076fb21bc4c269a05eb7b2b326947/FLAG877d08f2b [2023-11-29 05:18:36,931 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/data/fea7f9d39/df7076fb21bc4c269a05eb7b2b326947 [2023-11-29 05:18:36,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:18:36,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:18:36,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:18:36,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:18:36,942 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:18:36,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:18:36" (1/1) ... [2023-11-29 05:18:36,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b02524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:36, skipping insertion in model container [2023-11-29 05:18:36,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:18:36" (1/1) ... [2023-11-29 05:18:37,062 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:18:37,420 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_bfb6ddd4-8069-4830-817f-dc501d1f2e66/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c[20454,20467] [2023-11-29 05:18:37,455 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_bfb6ddd4-8069-4830-817f-dc501d1f2e66/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c[23961,23974] [2023-11-29 05:18:38,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:18:38,253 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:18:38,297 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_bfb6ddd4-8069-4830-817f-dc501d1f2e66/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c[20454,20467] [2023-11-29 05:18:38,306 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_bfb6ddd4-8069-4830-817f-dc501d1f2e66/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c[23961,23974] [2023-11-29 05:18:38,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:18:38,850 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:18:38,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:38 WrapperNode [2023-11-29 05:18:38,850 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:18:38,851 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:18:38,852 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:18:38,852 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:18:38,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:38" (1/1) ... [2023-11-29 05:18:38,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:38" (1/1) ... [2023-11-29 05:18:39,174 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5211 [2023-11-29 05:18:39,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:18:39,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:18:39,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:18:39,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:18:39,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:38" (1/1) ... [2023-11-29 05:18:39,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:38" (1/1) ... [2023-11-29 05:18:39,290 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:38" (1/1) ... [2023-11-29 05:18:39,484 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 05:18:39,485 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:38" (1/1) ... [2023-11-29 05:18:39,485 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:38" (1/1) ... [2023-11-29 05:18:39,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:38" (1/1) ... [2023-11-29 05:18:39,725 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:38" (1/1) ... [2023-11-29 05:18:39,764 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:38" (1/1) ... [2023-11-29 05:18:39,775 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:38" (1/1) ... [2023-11-29 05:18:39,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:18:39,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:18:39,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:18:39,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:18:39,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:38" (1/1) ... [2023-11-29 05:18:39,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:18:39,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:39,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:18:39,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:18:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:18:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:18:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:18:39,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:18:40,001 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:18:40,004 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:18:44,673 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:18:44,742 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:18:44,742 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 05:18:44,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:18:44 BoogieIcfgContainer [2023-11-29 05:18:44,743 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:18:44,746 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:18:44,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:18:44,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:18:44,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:18:36" (1/3) ... [2023-11-29 05:18:44,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a538e47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:18:44, skipping insertion in model container [2023-11-29 05:18:44,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:38" (2/3) ... [2023-11-29 05:18:44,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a538e47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:18:44, skipping insertion in model container [2023-11-29 05:18:44,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:18:44" (3/3) ... [2023-11-29 05:18:44,753 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label08.c [2023-11-29 05:18:44,772 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:18:44,772 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 05:18:44,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:18:44,849 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;@36bad0b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:18:44,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 05:18:44,859 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 05:18:44,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 05:18:44,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:44,868 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 05:18:44,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:44,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:44,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1824032080, now seen corresponding path program 1 times [2023-11-29 05:18:44,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:44,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370213788] [2023-11-29 05:18:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:44,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:45,103 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 05:18:45,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:45,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370213788] [2023-11-29 05:18:45,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370213788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:45,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:45,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:18:45,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567875877] [2023-11-29 05:18:45,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:45,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:18:45,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:45,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:18:45,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:18:45,146 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 05:18:45,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:45,236 INFO L93 Difference]: Finished difference Result 1679 states and 3299 transitions. [2023-11-29 05:18:45,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:18:45,239 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 05:18:45,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:45,259 INFO L225 Difference]: With dead ends: 1679 [2023-11-29 05:18:45,259 INFO L226 Difference]: Without dead ends: 863 [2023-11-29 05:18:45,265 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 05:18:45,269 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 05:18:45,270 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 05:18:45,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-11-29 05:18:45,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2023-11-29 05:18:45,349 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 05:18:45,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1632 transitions. [2023-11-29 05:18:45,355 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1632 transitions. Word has length 25 [2023-11-29 05:18:45,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:45,356 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1632 transitions. [2023-11-29 05:18:45,356 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 05:18:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1632 transitions. [2023-11-29 05:18:45,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 05:18:45,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:45,358 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 05:18:45,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:18:45,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:45,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:45,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1401330254, now seen corresponding path program 1 times [2023-11-29 05:18:45,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:45,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543362569] [2023-11-29 05:18:45,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:45,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:45,694 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 05:18:45,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:45,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543362569] [2023-11-29 05:18:45,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543362569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:45,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:45,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:18:45,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095466027] [2023-11-29 05:18:45,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:45,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:18:45,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:45,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:18:45,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:18:45,699 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 05:18:45,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:45,815 INFO L93 Difference]: Finished difference Result 921 states and 1724 transitions. [2023-11-29 05:18:45,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:18:45,816 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 05:18:45,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:45,822 INFO L225 Difference]: With dead ends: 921 [2023-11-29 05:18:45,822 INFO L226 Difference]: Without dead ends: 863 [2023-11-29 05:18:45,823 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 05:18:45,824 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 05:18:45,825 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 05:18:45,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-11-29 05:18:45,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2023-11-29 05:18:45,848 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 05:18:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1582 transitions. [2023-11-29 05:18:45,853 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1582 transitions. Word has length 25 [2023-11-29 05:18:45,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:45,853 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1582 transitions. [2023-11-29 05:18:45,854 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 05:18:45,854 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1582 transitions. [2023-11-29 05:18:45,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 05:18:45,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:45,855 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] [2023-11-29 05:18:45,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:18:45,856 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:45,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:45,856 INFO L85 PathProgramCache]: Analyzing trace with hash -992514711, now seen corresponding path program 1 times [2023-11-29 05:18:45,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:45,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057842276] [2023-11-29 05:18:45,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:45,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:45,923 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 05:18:45,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:45,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057842276] [2023-11-29 05:18:45,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057842276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:45,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:45,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:18:45,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51359739] [2023-11-29 05:18:45,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:45,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:45,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:45,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:45,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:45,926 INFO L87 Difference]: Start difference. First operand 863 states and 1582 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 05:18:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:49,976 INFO L93 Difference]: Finished difference Result 2367 states and 4455 transitions. [2023-11-29 05:18:49,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:49,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2023-11-29 05:18:49,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:49,987 INFO L225 Difference]: With dead ends: 2367 [2023-11-29 05:18:49,988 INFO L226 Difference]: Without dead ends: 1614 [2023-11-29 05:18:49,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:18:49,991 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 915 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:49,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 615 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 05:18:49,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2023-11-29 05:18:50,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1614. [2023-11-29 05:18:50,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1612 states have (on average 1.5887096774193548) internal successors, (2561), 1613 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states 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 05:18:50,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2561 transitions. [2023-11-29 05:18:50,045 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2561 transitions. Word has length 29 [2023-11-29 05:18:50,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:50,046 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2561 transitions. [2023-11-29 05:18:50,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 05:18:50,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2561 transitions. [2023-11-29 05:18:50,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 05:18:50,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:50,051 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 05:18:50,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:18:50,051 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:50,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:50,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1958225767, now seen corresponding path program 1 times [2023-11-29 05:18:50,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:50,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153399766] [2023-11-29 05:18:50,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:50,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:50,324 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 05:18:50,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:50,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153399766] [2023-11-29 05:18:50,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153399766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:50,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:50,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:18:50,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023633380] [2023-11-29 05:18:50,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:50,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:18:50,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:50,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:18:50,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:18:50,327 INFO L87 Difference]: Start difference. First operand 1614 states and 2561 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 05:18:50,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:50,813 INFO L93 Difference]: Finished difference Result 2384 states and 3807 transitions. [2023-11-29 05:18:50,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:18:50,814 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 05:18:50,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:50,828 INFO L225 Difference]: With dead ends: 2384 [2023-11-29 05:18:50,828 INFO L226 Difference]: Without dead ends: 2329 [2023-11-29 05:18:50,830 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 05:18:50,831 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 05:18:50,831 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 05:18:50,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2023-11-29 05:18:50,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 1667. [2023-11-29 05:18:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1665 states have (on average 1.5897897897897897) internal successors, (2647), 1666 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states 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 05:18:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2647 transitions. [2023-11-29 05:18:50,883 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2647 transitions. Word has length 74 [2023-11-29 05:18:50,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:50,883 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 2647 transitions. [2023-11-29 05:18:50,883 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 05:18:50,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2647 transitions. [2023-11-29 05:18:50,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 05:18:50,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:50,886 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 05:18:50,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:18:50,887 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:50,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:50,887 INFO L85 PathProgramCache]: Analyzing trace with hash -783811831, now seen corresponding path program 1 times [2023-11-29 05:18:50,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:50,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465769303] [2023-11-29 05:18:50,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:50,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:50,996 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 05:18:50,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:50,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465769303] [2023-11-29 05:18:50,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465769303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:50,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:50,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:50,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762451303] [2023-11-29 05:18:50,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:50,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:50,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:50,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:50,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:50,999 INFO L87 Difference]: Start difference. First operand 1667 states and 2647 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 05:18:51,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:51,048 INFO L93 Difference]: Finished difference Result 1872 states and 2978 transitions. [2023-11-29 05:18:51,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:51,049 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 05:18:51,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:51,060 INFO L225 Difference]: With dead ends: 1872 [2023-11-29 05:18:51,060 INFO L226 Difference]: Without dead ends: 1764 [2023-11-29 05:18:51,061 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 05:18:51,062 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 05:18:51,063 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 05:18:51,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2023-11-29 05:18:51,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1760. [2023-11-29 05:18:51,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1758 states have (on average 1.5898748577929465) internal successors, (2795), 1759 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states 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 05:18:51,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2795 transitions. [2023-11-29 05:18:51,110 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2795 transitions. Word has length 76 [2023-11-29 05:18:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:51,110 INFO L495 AbstractCegarLoop]: Abstraction has 1760 states and 2795 transitions. [2023-11-29 05:18:51,111 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 05:18:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2795 transitions. [2023-11-29 05:18:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 05:18:51,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:51,112 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 05:18:51,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:18:51,113 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:51,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:51,113 INFO L85 PathProgramCache]: Analyzing trace with hash -781666879, now seen corresponding path program 1 times [2023-11-29 05:18:51,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:51,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691180831] [2023-11-29 05:18:51,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:51,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:51,534 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 05:18:51,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:51,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691180831] [2023-11-29 05:18:51,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691180831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:51,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:51,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:18:51,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937584948] [2023-11-29 05:18:51,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:51,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:18:51,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:51,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:18:51,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:18:51,537 INFO L87 Difference]: Start difference. First operand 1760 states and 2795 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 05:18:51,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:51,913 INFO L93 Difference]: Finished difference Result 1963 states and 3119 transitions. [2023-11-29 05:18:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:18:51,913 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 05:18:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:51,924 INFO L225 Difference]: With dead ends: 1963 [2023-11-29 05:18:51,924 INFO L226 Difference]: Without dead ends: 1762 [2023-11-29 05:18:51,925 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 05:18:51,926 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 7560 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7560 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:51,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7560 Valid, 2081 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:51,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2023-11-29 05:18:51,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1760. [2023-11-29 05:18:51,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1758 states have (on average 1.5887372013651877) internal successors, (2793), 1759 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states 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 05:18:51,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2793 transitions. [2023-11-29 05:18:51,973 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2793 transitions. Word has length 76 [2023-11-29 05:18:51,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:51,973 INFO L495 AbstractCegarLoop]: Abstraction has 1760 states and 2793 transitions. [2023-11-29 05:18:51,974 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 05:18:51,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2793 transitions. [2023-11-29 05:18:51,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 05:18:51,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:51,975 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 05:18:51,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:18:51,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:51,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:51,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1409718351, now seen corresponding path program 1 times [2023-11-29 05:18:51,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:51,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440242131] [2023-11-29 05:18:51,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:51,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:52,215 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 05:18:52,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:52,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440242131] [2023-11-29 05:18:52,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440242131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:52,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:52,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:18:52,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689128305] [2023-11-29 05:18:52,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:52,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:18:52,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:52,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:18:52,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:18:52,218 INFO L87 Difference]: Start difference. First operand 1760 states and 2793 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 05:18:52,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:52,263 INFO L93 Difference]: Finished difference Result 1768 states and 2802 transitions. [2023-11-29 05:18:52,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:18:52,263 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 05:18:52,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:52,273 INFO L225 Difference]: With dead ends: 1768 [2023-11-29 05:18:52,274 INFO L226 Difference]: Without dead ends: 1766 [2023-11-29 05:18:52,274 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 05:18:52,275 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 05:18:52,276 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 05:18:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2023-11-29 05:18:52,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1764. [2023-11-29 05:18:52,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1764 states, 1762 states have (on average 1.58683314415437) internal successors, (2796), 1763 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states 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 05:18:52,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2796 transitions. [2023-11-29 05:18:52,321 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2796 transitions. Word has length 77 [2023-11-29 05:18:52,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:52,321 INFO L495 AbstractCegarLoop]: Abstraction has 1764 states and 2796 transitions. [2023-11-29 05:18:52,321 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 05:18:52,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2796 transitions. [2023-11-29 05:18:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 05:18:52,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:52,323 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 05:18:52,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:18:52,323 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:52,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:52,324 INFO L85 PathProgramCache]: Analyzing trace with hash 89163937, now seen corresponding path program 1 times [2023-11-29 05:18:52,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:52,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299680312] [2023-11-29 05:18:52,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:52,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:52,394 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 05:18:52,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:52,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299680312] [2023-11-29 05:18:52,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299680312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:52,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:52,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:52,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508673446] [2023-11-29 05:18:52,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:52,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:52,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:52,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:52,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:52,396 INFO L87 Difference]: Start difference. First operand 1764 states and 2796 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 05:18:52,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:52,435 INFO L93 Difference]: Finished difference Result 2158 states and 3416 transitions. [2023-11-29 05:18:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:52,435 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 05:18:52,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:52,447 INFO L225 Difference]: With dead ends: 2158 [2023-11-29 05:18:52,447 INFO L226 Difference]: Without dead ends: 1953 [2023-11-29 05:18:52,448 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 05:18:52,449 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 05:18:52,449 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 05:18:52,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2023-11-29 05:18:52,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1951. [2023-11-29 05:18:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1949 states have (on average 1.5838891739353516) internal successors, (3087), 1950 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states 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 05:18:52,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3087 transitions. [2023-11-29 05:18:52,525 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3087 transitions. Word has length 78 [2023-11-29 05:18:52,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:52,525 INFO L495 AbstractCegarLoop]: Abstraction has 1951 states and 3087 transitions. [2023-11-29 05:18:52,526 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 05:18:52,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3087 transitions. [2023-11-29 05:18:52,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 05:18:52,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:52,527 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 05:18:52,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:18:52,527 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:52,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:52,528 INFO L85 PathProgramCache]: Analyzing trace with hash -321222751, now seen corresponding path program 1 times [2023-11-29 05:18:52,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:52,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631025229] [2023-11-29 05:18:52,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:52,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:52,595 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 05:18:52,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:52,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631025229] [2023-11-29 05:18:52,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631025229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:52,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:52,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:52,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402689843] [2023-11-29 05:18:52,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:52,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:52,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:52,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:52,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:52,598 INFO L87 Difference]: Start difference. First operand 1951 states and 3087 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 05:18:52,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:52,644 INFO L93 Difference]: Finished difference Result 2703 states and 4261 transitions. [2023-11-29 05:18:52,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:52,646 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 05:18:52,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:52,658 INFO L225 Difference]: With dead ends: 2703 [2023-11-29 05:18:52,659 INFO L226 Difference]: Without dead ends: 2311 [2023-11-29 05:18:52,660 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 05:18:52,661 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 05:18:52,661 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 05:18:52,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2023-11-29 05:18:52,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2309. [2023-11-29 05:18:52,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2307 states have (on average 1.576506285218899) internal successors, (3637), 2308 states have internal predecessors, (3637), 0 states have call successors, (0), 0 states 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 05:18:52,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3637 transitions. [2023-11-29 05:18:52,728 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3637 transitions. Word has length 78 [2023-11-29 05:18:52,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:52,728 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 3637 transitions. [2023-11-29 05:18:52,728 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 05:18:52,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3637 transitions. [2023-11-29 05:18:52,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 05:18:52,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:52,730 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 05:18:52,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:18:52,730 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:52,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:52,730 INFO L85 PathProgramCache]: Analyzing trace with hash -549861983, now seen corresponding path program 1 times [2023-11-29 05:18:52,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:52,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989426702] [2023-11-29 05:18:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:52,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:52,800 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 05:18:52,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:52,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989426702] [2023-11-29 05:18:52,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989426702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:52,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:52,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:52,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669168830] [2023-11-29 05:18:52,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:52,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:52,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:52,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:52,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:52,802 INFO L87 Difference]: Start difference. First operand 2309 states and 3637 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 05:18:52,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:52,863 INFO L93 Difference]: Finished difference Result 3745 states and 5855 transitions. [2023-11-29 05:18:52,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:52,864 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 05:18:52,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:52,880 INFO L225 Difference]: With dead ends: 3745 [2023-11-29 05:18:52,880 INFO L226 Difference]: Without dead ends: 2995 [2023-11-29 05:18:52,882 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 05:18:52,883 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 05:18:52,883 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 05:18:52,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2023-11-29 05:18:52,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 2993. [2023-11-29 05:18:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2993 states, 2991 states have (on average 1.5623537278502173) internal successors, (4673), 2992 states have internal predecessors, (4673), 0 states have call successors, (0), 0 states 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 05:18:52,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2993 states to 2993 states and 4673 transitions. [2023-11-29 05:18:52,977 INFO L78 Accepts]: Start accepts. Automaton has 2993 states and 4673 transitions. Word has length 78 [2023-11-29 05:18:52,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:52,977 INFO L495 AbstractCegarLoop]: Abstraction has 2993 states and 4673 transitions. [2023-11-29 05:18:52,978 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 05:18:52,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2993 states and 4673 transitions. [2023-11-29 05:18:52,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 05:18:52,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:52,979 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 05:18:52,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:18:52,979 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:52,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:52,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1175518047, now seen corresponding path program 1 times [2023-11-29 05:18:52,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:52,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099808767] [2023-11-29 05:18:52,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:52,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:53,051 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 05:18:53,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:53,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099808767] [2023-11-29 05:18:53,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099808767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:53,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:53,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:53,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039619627] [2023-11-29 05:18:53,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:53,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:53,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:53,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:53,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:53,053 INFO L87 Difference]: Start difference. First operand 2993 states and 4673 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 05:18:53,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:53,144 INFO L93 Difference]: Finished difference Result 5733 states and 8851 transitions. [2023-11-29 05:18:53,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:53,144 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 05:18:53,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:53,168 INFO L225 Difference]: With dead ends: 5733 [2023-11-29 05:18:53,168 INFO L226 Difference]: Without dead ends: 4299 [2023-11-29 05:18:53,171 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 05:18:53,172 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 05:18:53,172 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 05:18:53,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4299 states. [2023-11-29 05:18:53,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4299 to 4297. [2023-11-29 05:18:53,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 4295 states have (on average 1.5406286379511058) internal successors, (6617), 4296 states have internal predecessors, (6617), 0 states have call successors, (0), 0 states 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 05:18:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 6617 transitions. [2023-11-29 05:18:53,314 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 6617 transitions. Word has length 78 [2023-11-29 05:18:53,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:53,314 INFO L495 AbstractCegarLoop]: Abstraction has 4297 states and 6617 transitions. [2023-11-29 05:18:53,314 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 05:18:53,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 6617 transitions. [2023-11-29 05:18:53,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 05:18:53,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:53,316 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 05:18:53,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:18:53,316 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:53,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:53,317 INFO L85 PathProgramCache]: Analyzing trace with hash -286784607, now seen corresponding path program 1 times [2023-11-29 05:18:53,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:53,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469412613] [2023-11-29 05:18:53,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:53,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:53,386 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 05:18:53,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:53,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469412613] [2023-11-29 05:18:53,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469412613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:53,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:53,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:53,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610457272] [2023-11-29 05:18:53,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:53,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:53,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:53,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:53,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:53,389 INFO L87 Difference]: Start difference. First operand 4297 states and 6617 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 05:18:53,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:53,540 INFO L93 Difference]: Finished difference Result 9517 states and 14459 transitions. [2023-11-29 05:18:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:53,541 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 05:18:53,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:53,568 INFO L225 Difference]: With dead ends: 9517 [2023-11-29 05:18:53,568 INFO L226 Difference]: Without dead ends: 6779 [2023-11-29 05:18:53,573 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 05:18:53,574 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 05:18:53,574 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 05:18:53,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6779 states. [2023-11-29 05:18:53,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6779 to 6777. [2023-11-29 05:18:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6777 states, 6775 states have (on average 1.5127675276752768) internal successors, (10249), 6776 states have internal predecessors, (10249), 0 states have call successors, (0), 0 states 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 05:18:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6777 states to 6777 states and 10249 transitions. [2023-11-29 05:18:53,854 INFO L78 Accepts]: Start accepts. Automaton has 6777 states and 10249 transitions. Word has length 78 [2023-11-29 05:18:53,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:53,854 INFO L495 AbstractCegarLoop]: Abstraction has 6777 states and 10249 transitions. [2023-11-29 05:18:53,854 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 05:18:53,854 INFO L276 IsEmpty]: Start isEmpty. Operand 6777 states and 10249 transitions. [2023-11-29 05:18:53,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 05:18:53,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:53,856 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 05:18:53,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:18:53,856 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:53,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash -589805919, now seen corresponding path program 1 times [2023-11-29 05:18:53,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:53,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247662575] [2023-11-29 05:18:53,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:53,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:53,921 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 05:18:53,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:53,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247662575] [2023-11-29 05:18:53,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247662575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:53,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:53,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:53,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137304348] [2023-11-29 05:18:53,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:53,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:53,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:53,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:53,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:53,924 INFO L87 Difference]: Start difference. First operand 6777 states and 10249 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 05:18:54,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:54,186 INFO L93 Difference]: Finished difference Result 16701 states and 24907 transitions. [2023-11-29 05:18:54,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:54,186 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 05:18:54,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:54,209 INFO L225 Difference]: With dead ends: 16701 [2023-11-29 05:18:54,209 INFO L226 Difference]: Without dead ends: 11483 [2023-11-29 05:18:54,218 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 05:18:54,219 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 05:18:54,219 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 05:18:54,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11483 states. [2023-11-29 05:18:54,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11483 to 11481. [2023-11-29 05:18:54,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11481 states, 11479 states have (on average 1.481052356477045) internal successors, (17001), 11480 states have internal predecessors, (17001), 0 states have call successors, (0), 0 states 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 05:18:54,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11481 states to 11481 states and 17001 transitions. [2023-11-29 05:18:54,555 INFO L78 Accepts]: Start accepts. Automaton has 11481 states and 17001 transitions. Word has length 78 [2023-11-29 05:18:54,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:54,556 INFO L495 AbstractCegarLoop]: Abstraction has 11481 states and 17001 transitions. [2023-11-29 05:18:54,556 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 05:18:54,556 INFO L276 IsEmpty]: Start isEmpty. Operand 11481 states and 17001 transitions. [2023-11-29 05:18:54,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 05:18:54,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:54,559 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 05:18:54,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:18:54,559 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:54,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:54,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1500697018, now seen corresponding path program 1 times [2023-11-29 05:18:54,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:54,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521234808] [2023-11-29 05:18:54,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:54,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:18:54,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:54,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521234808] [2023-11-29 05:18:54,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521234808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:54,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:54,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:54,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275694003] [2023-11-29 05:18:54,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:54,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:54,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:54,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:54,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:54,625 INFO L87 Difference]: Start difference. First operand 11481 states and 17001 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 05:18:55,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:55,036 INFO L93 Difference]: Finished difference Result 21728 states and 32239 transitions. [2023-11-29 05:18:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:55,036 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 05:18:55,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:55,067 INFO L225 Difference]: With dead ends: 21728 [2023-11-29 05:18:55,068 INFO L226 Difference]: Without dead ends: 16221 [2023-11-29 05:18:55,077 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 05:18:55,078 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 05:18:55,079 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 05:18:55,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16221 states. [2023-11-29 05:18:55,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16221 to 16219. [2023-11-29 05:18:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16219 states, 16217 states have (on average 1.4707405808719245) internal successors, (23851), 16218 states have internal predecessors, (23851), 0 states have call successors, (0), 0 states 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 05:18:55,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16219 states to 16219 states and 23851 transitions. [2023-11-29 05:18:55,512 INFO L78 Accepts]: Start accepts. Automaton has 16219 states and 23851 transitions. Word has length 80 [2023-11-29 05:18:55,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:55,512 INFO L495 AbstractCegarLoop]: Abstraction has 16219 states and 23851 transitions. [2023-11-29 05:18:55,512 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 05:18:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand 16219 states and 23851 transitions. [2023-11-29 05:18:55,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:18:55,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:55,516 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 05:18:55,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:18:55,516 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:55,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:55,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1623175948, now seen corresponding path program 1 times [2023-11-29 05:18:55,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:55,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919846810] [2023-11-29 05:18:55,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:55,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:55,766 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 05:18:55,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:55,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919846810] [2023-11-29 05:18:55,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919846810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:55,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:55,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:18:55,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481271413] [2023-11-29 05:18:55,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:55,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:18:55,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:55,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:18:55,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:18:55,768 INFO L87 Difference]: Start difference. First operand 16219 states and 23851 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 05:18:57,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:57,788 INFO L93 Difference]: Finished difference Result 121771 states and 177651 transitions. [2023-11-29 05:18:57,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:18:57,789 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 05:18:57,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:57,914 INFO L225 Difference]: With dead ends: 121771 [2023-11-29 05:18:57,914 INFO L226 Difference]: Without dead ends: 107113 [2023-11-29 05:18:57,942 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 05:18:57,943 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 9884 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:57,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9884 Valid, 4373 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:18:58,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107113 states. [2023-11-29 05:18:59,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107113 to 30875. [2023-11-29 05:18:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30875 states, 30873 states have (on average 1.4587179736339195) internal successors, (45035), 30874 states have internal predecessors, (45035), 0 states have call successors, (0), 0 states 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 05:18:59,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30875 states to 30875 states and 45035 transitions. [2023-11-29 05:18:59,511 INFO L78 Accepts]: Start accepts. Automaton has 30875 states and 45035 transitions. Word has length 100 [2023-11-29 05:18:59,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:59,511 INFO L495 AbstractCegarLoop]: Abstraction has 30875 states and 45035 transitions. [2023-11-29 05:18:59,511 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 05:18:59,511 INFO L276 IsEmpty]: Start isEmpty. Operand 30875 states and 45035 transitions. [2023-11-29 05:18:59,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:18:59,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:59,515 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 05:18:59,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:18:59,515 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:59,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:59,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1212789260, now seen corresponding path program 1 times [2023-11-29 05:18:59,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:59,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571802248] [2023-11-29 05:18:59,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:59,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:59,697 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 05:18:59,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:59,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571802248] [2023-11-29 05:18:59,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571802248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:59,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:59,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:18:59,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736890067] [2023-11-29 05:18:59,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:59,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:18:59,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:59,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:18:59,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:18:59,700 INFO L87 Difference]: Start difference. First operand 30875 states and 45035 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 05:19:02,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:02,741 INFO L93 Difference]: Finished difference Result 136427 states and 198835 transitions. [2023-11-29 05:19:02,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:19:02,742 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 05:19:02,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:02,894 INFO L225 Difference]: With dead ends: 136427 [2023-11-29 05:19:02,894 INFO L226 Difference]: Without dead ends: 121769 [2023-11-29 05:19:02,925 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 05:19:02,926 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 9924 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9924 SdHoareTripleChecker+Valid, 4274 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:02,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9924 Valid, 4274 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:19:03,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121769 states. [2023-11-29 05:19:05,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121769 to 52891. [2023-11-29 05:19:05,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52891 states, 52889 states have (on average 1.449280568738301) internal successors, (76651), 52890 states have internal predecessors, (76651), 0 states have call successors, (0), 0 states 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 05:19:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52891 states to 52891 states and 76651 transitions. [2023-11-29 05:19:05,136 INFO L78 Accepts]: Start accepts. Automaton has 52891 states and 76651 transitions. Word has length 100 [2023-11-29 05:19:05,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:05,137 INFO L495 AbstractCegarLoop]: Abstraction has 52891 states and 76651 transitions. [2023-11-29 05:19:05,137 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 05:19:05,137 INFO L276 IsEmpty]: Start isEmpty. Operand 52891 states and 76651 transitions. [2023-11-29 05:19:05,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:19:05,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:05,142 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 05:19:05,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:19:05,143 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:05,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:05,143 INFO L85 PathProgramCache]: Analyzing trace with hash 984150028, now seen corresponding path program 1 times [2023-11-29 05:19:05,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:05,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383344187] [2023-11-29 05:19:05,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:05,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:05,327 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 05:19:05,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:05,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383344187] [2023-11-29 05:19:05,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383344187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:05,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:05,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:19:05,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909611737] [2023-11-29 05:19:05,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:05,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:19:05,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:05,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:19:05,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:19:05,330 INFO L87 Difference]: Start difference. First operand 52891 states and 76651 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 05:19:09,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:09,176 INFO L93 Difference]: Finished difference Result 151083 states and 220019 transitions. [2023-11-29 05:19:09,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:19:09,177 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 05:19:09,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:09,344 INFO L225 Difference]: With dead ends: 151083 [2023-11-29 05:19:09,344 INFO L226 Difference]: Without dead ends: 136425 [2023-11-29 05:19:09,378 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 05:19:09,378 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 9999 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9999 SdHoareTripleChecker+Valid, 4250 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:09,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9999 Valid, 4250 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:19:09,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136425 states. [2023-11-29 05:19:12,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136425 to 67547. [2023-11-29 05:19:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67547 states, 67545 states have (on average 1.4484417795543711) internal successors, (97835), 67546 states have internal predecessors, (97835), 0 states have call successors, (0), 0 states 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 05:19:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67547 states to 67547 states and 97835 transitions. [2023-11-29 05:19:12,180 INFO L78 Accepts]: Start accepts. Automaton has 67547 states and 97835 transitions. Word has length 100 [2023-11-29 05:19:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:12,180 INFO L495 AbstractCegarLoop]: Abstraction has 67547 states and 97835 transitions. [2023-11-29 05:19:12,181 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 05:19:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 67547 states and 97835 transitions. [2023-11-29 05:19:12,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:19:12,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:12,186 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 05:19:12,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:19:12,186 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:12,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:12,187 INFO L85 PathProgramCache]: Analyzing trace with hash 358493964, now seen corresponding path program 1 times [2023-11-29 05:19:12,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:12,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697191536] [2023-11-29 05:19:12,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:12,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,424 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 05:19:12,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:12,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697191536] [2023-11-29 05:19:12,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697191536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:12,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:12,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:19:12,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950993481] [2023-11-29 05:19:12,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:12,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:19:12,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:12,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:19:12,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:19:12,426 INFO L87 Difference]: Start difference. First operand 67547 states and 97835 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 05:19:17,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:17,087 INFO L93 Difference]: Finished difference Result 165739 states and 241203 transitions. [2023-11-29 05:19:17,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:19:17,087 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 05:19:17,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:17,248 INFO L225 Difference]: With dead ends: 165739 [2023-11-29 05:19:17,248 INFO L226 Difference]: Without dead ends: 151081 [2023-11-29 05:19:17,271 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 05:19:17,272 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 10065 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10065 SdHoareTripleChecker+Valid, 4214 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 05:19:17,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10065 Valid, 4214 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:19:17,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151081 states. [2023-11-29 05:19:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151081 to 82203. [2023-11-29 05:19:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82203 states, 82201 states have (on average 1.4479020936484959) internal successors, (119019), 82202 states have internal predecessors, (119019), 0 states have call successors, (0), 0 states 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 05:19:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82203 states to 82203 states and 119019 transitions. [2023-11-29 05:19:20,329 INFO L78 Accepts]: Start accepts. Automaton has 82203 states and 119019 transitions. Word has length 100 [2023-11-29 05:19:20,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:20,329 INFO L495 AbstractCegarLoop]: Abstraction has 82203 states and 119019 transitions. [2023-11-29 05:19:20,329 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 05:19:20,329 INFO L276 IsEmpty]: Start isEmpty. Operand 82203 states and 119019 transitions. [2023-11-29 05:19:20,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:19:20,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:20,334 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 05:19:20,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:19:20,335 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:20,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:20,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1247227404, now seen corresponding path program 1 times [2023-11-29 05:19:20,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:20,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631676295] [2023-11-29 05:19:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:20,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,560 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 05:19:20,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:20,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631676295] [2023-11-29 05:19:20,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631676295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:20,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:20,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:19:20,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189456381] [2023-11-29 05:19:20,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:20,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:19:20,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:20,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:19:20,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:19:20,562 INFO L87 Difference]: Start difference. First operand 82203 states and 119019 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 05:19:25,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:25,519 INFO L93 Difference]: Finished difference Result 180395 states and 262387 transitions. [2023-11-29 05:19:25,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:19:25,520 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 05:19:25,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:25,724 INFO L225 Difference]: With dead ends: 180395 [2023-11-29 05:19:25,724 INFO L226 Difference]: Without dead ends: 165737 [2023-11-29 05:19:25,758 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 05:19:25,758 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 9915 mSDsluCounter, 2660 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9915 SdHoareTripleChecker+Valid, 4321 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:25,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9915 Valid, 4321 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:19:25,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165737 states. [2023-11-29 05:19:29,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165737 to 96859. [2023-11-29 05:19:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96859 states, 96857 states have (on average 1.4475257338137666) internal successors, (140203), 96858 states have internal predecessors, (140203), 0 states have call successors, (0), 0 states 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 05:19:29,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96859 states to 96859 states and 140203 transitions. [2023-11-29 05:19:29,805 INFO L78 Accepts]: Start accepts. Automaton has 96859 states and 140203 transitions. Word has length 100 [2023-11-29 05:19:29,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:29,805 INFO L495 AbstractCegarLoop]: Abstraction has 96859 states and 140203 transitions. [2023-11-29 05:19:29,805 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 05:19:29,806 INFO L276 IsEmpty]: Start isEmpty. Operand 96859 states and 140203 transitions. [2023-11-29 05:19:29,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:19:29,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:29,812 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 05:19:29,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:19:29,812 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:29,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:29,812 INFO L85 PathProgramCache]: Analyzing trace with hash 944206092, now seen corresponding path program 1 times [2023-11-29 05:19:29,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:29,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108958552] [2023-11-29 05:19:29,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:29,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:30,151 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 05:19:30,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:30,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108958552] [2023-11-29 05:19:30,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108958552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:30,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:30,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:19:30,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772954994] [2023-11-29 05:19:30,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:30,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:19:30,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:30,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:19:30,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:19:30,154 INFO L87 Difference]: Start difference. First operand 96859 states and 140203 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 05:19:35,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:35,608 INFO L93 Difference]: Finished difference Result 195051 states and 283571 transitions. [2023-11-29 05:19:35,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:19:35,608 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 05:19:35,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:35,809 INFO L225 Difference]: With dead ends: 195051 [2023-11-29 05:19:35,809 INFO L226 Difference]: Without dead ends: 180393 [2023-11-29 05:19:35,834 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 05:19:35,835 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 05:19:35,835 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 05:19:35,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180393 states. [2023-11-29 05:19:40,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180393 to 111515. [2023-11-29 05:19:40,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111515 states, 111513 states have (on average 1.4472483028884524) internal successors, (161387), 111514 states have internal predecessors, (161387), 0 states have call successors, (0), 0 states 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 05:19:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111515 states to 111515 states and 161387 transitions. [2023-11-29 05:19:40,310 INFO L78 Accepts]: Start accepts. Automaton has 111515 states and 161387 transitions. Word has length 100 [2023-11-29 05:19:40,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:40,310 INFO L495 AbstractCegarLoop]: Abstraction has 111515 states and 161387 transitions. [2023-11-29 05:19:40,310 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 05:19:40,310 INFO L276 IsEmpty]: Start isEmpty. Operand 111515 states and 161387 transitions. [2023-11-29 05:19:40,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 05:19:40,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:40,316 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 05:19:40,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 05:19:40,316 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:40,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:40,317 INFO L85 PathProgramCache]: Analyzing trace with hash 676577140, now seen corresponding path program 1 times [2023-11-29 05:19:40,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:40,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770804718] [2023-11-29 05:19:40,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:40,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:40,431 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 05:19:40,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:40,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770804718] [2023-11-29 05:19:40,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770804718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:40,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:40,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:19:40,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601587754] [2023-11-29 05:19:40,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:40,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:19:40,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:40,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:19:40,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:19:40,433 INFO L87 Difference]: Start difference. First operand 111515 states and 161387 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 05:19:42,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:42,998 INFO L93 Difference]: Finished difference Result 188342 states and 273733 transitions. [2023-11-29 05:19:42,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:19:42,999 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 05:19:42,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:43,082 INFO L225 Difference]: With dead ends: 188342 [2023-11-29 05:19:43,082 INFO L226 Difference]: Without dead ends: 78388 [2023-11-29 05:19:43,114 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 05:19:43,115 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 05:19:43,115 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 05:19:43,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78388 states. [2023-11-29 05:19:46,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78388 to 78386. [2023-11-29 05:19:46,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78386 states, 78384 states have (on average 1.4525668503776281) internal successors, (113858), 78385 states have internal predecessors, (113858), 0 states have call successors, (0), 0 states 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 05:19:46,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78386 states to 78386 states and 113858 transitions. [2023-11-29 05:19:46,348 INFO L78 Accepts]: Start accepts. Automaton has 78386 states and 113858 transitions. Word has length 102 [2023-11-29 05:19:46,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:46,348 INFO L495 AbstractCegarLoop]: Abstraction has 78386 states and 113858 transitions. [2023-11-29 05:19:46,348 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 05:19:46,348 INFO L276 IsEmpty]: Start isEmpty. Operand 78386 states and 113858 transitions. [2023-11-29 05:19:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 05:19:46,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:46,351 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 05:19:46,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 05:19:46,351 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:46,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:46,352 INFO L85 PathProgramCache]: Analyzing trace with hash -488936975, now seen corresponding path program 1 times [2023-11-29 05:19:46,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:46,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635159451] [2023-11-29 05:19:46,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:46,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:46,513 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 05:19:46,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:46,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635159451] [2023-11-29 05:19:46,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635159451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:46,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:46,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:19:46,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39745691] [2023-11-29 05:19:46,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:46,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:19:46,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:46,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:19:46,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:19:46,515 INFO L87 Difference]: Start difference. First operand 78386 states and 113858 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 05:19:51,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:51,143 INFO L93 Difference]: Finished difference Result 150082 states and 218698 transitions. [2023-11-29 05:19:51,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:19:51,144 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 05:19:51,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:51,283 INFO L225 Difference]: With dead ends: 150082 [2023-11-29 05:19:51,283 INFO L226 Difference]: Without dead ends: 139840 [2023-11-29 05:19:51,299 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 05:19:51,300 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 9891 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9891 SdHoareTripleChecker+Valid, 4621 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:51,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9891 Valid, 4621 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:19:51,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139840 states. [2023-11-29 05:19:54,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139840 to 88626. [2023-11-29 05:19:55,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88626 states, 88624 states have (on average 1.4522702653908648) internal successors, (128706), 88625 states have internal predecessors, (128706), 0 states have call successors, (0), 0 states 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 05:19:55,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88626 states to 88626 states and 128706 transitions. [2023-11-29 05:19:55,139 INFO L78 Accepts]: Start accepts. Automaton has 88626 states and 128706 transitions. Word has length 102 [2023-11-29 05:19:55,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:55,139 INFO L495 AbstractCegarLoop]: Abstraction has 88626 states and 128706 transitions. [2023-11-29 05:19:55,139 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 05:19:55,139 INFO L276 IsEmpty]: Start isEmpty. Operand 88626 states and 128706 transitions. [2023-11-29 05:19:55,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 05:19:55,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:55,143 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 05:19:55,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:19:55,143 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:55,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:55,143 INFO L85 PathProgramCache]: Analyzing trace with hash 323183630, now seen corresponding path program 1 times [2023-11-29 05:19:55,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:55,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589803057] [2023-11-29 05:19:55,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:55,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:55,235 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 05:19:55,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:55,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589803057] [2023-11-29 05:19:55,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589803057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:55,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:55,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:19:55,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924177252] [2023-11-29 05:19:55,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:55,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:19:55,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:55,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:19:55,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:19:55,237 INFO L87 Difference]: Start difference. First operand 88626 states and 128706 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 05:19:56,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:56,851 INFO L93 Difference]: Finished difference Result 132150 states and 191812 transitions. [2023-11-29 05:19:56,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:19:56,851 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 05:19:56,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:56,893 INFO L225 Difference]: With dead ends: 132150 [2023-11-29 05:19:56,893 INFO L226 Difference]: Without dead ends: 45108 [2023-11-29 05:19:56,926 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 05:19:56,927 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 05:19:56,927 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 05:19:56,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45108 states. [2023-11-29 05:19:58,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45108 to 45106. [2023-11-29 05:19:58,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45106 states, 45104 states have (on average 1.4423997871585668) internal successors, (65058), 45105 states have internal predecessors, (65058), 0 states have call successors, (0), 0 states 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 05:19:58,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45106 states to 45106 states and 65058 transitions. [2023-11-29 05:19:58,699 INFO L78 Accepts]: Start accepts. Automaton has 45106 states and 65058 transitions. Word has length 103 [2023-11-29 05:19:58,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:58,699 INFO L495 AbstractCegarLoop]: Abstraction has 45106 states and 65058 transitions. [2023-11-29 05:19:58,699 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 05:19:58,700 INFO L276 IsEmpty]: Start isEmpty. Operand 45106 states and 65058 transitions. [2023-11-29 05:19:58,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-29 05:19:58,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:58,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:58,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 05:19:58,702 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:58,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:58,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1176036682, now seen corresponding path program 1 times [2023-11-29 05:19:58,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:58,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113731153] [2023-11-29 05:19:58,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:58,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:19:58,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:58,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113731153] [2023-11-29 05:19:58,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113731153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:58,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:58,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:19:58,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347683608] [2023-11-29 05:19:58,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:58,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:19:58,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:58,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:19:58,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:19:58,789 INFO L87 Difference]: Start difference. First operand 45106 states and 65058 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 05:20:03,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:03,685 INFO L93 Difference]: Finished difference Result 48114 states and 69890 transitions. [2023-11-29 05:20:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:20:03,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2023-11-29 05:20:03,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:03,737 INFO L225 Difference]: With dead ends: 48114 [2023-11-29 05:20:03,737 INFO L226 Difference]: Without dead ends: 46610 [2023-11-29 05:20:03,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:20:03,747 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 1059 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:20:03,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 723 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 05:20:03,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46610 states. [2023-11-29 05:20:06,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46610 to 46608. [2023-11-29 05:20:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46608 states, 46606 states have (on average 1.43820538128138) internal successors, (67029), 46607 states have internal predecessors, (67029), 0 states have call successors, (0), 0 states 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 05:20:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46608 states to 46608 states and 67029 transitions. [2023-11-29 05:20:06,092 INFO L78 Accepts]: Start accepts. Automaton has 46608 states and 67029 transitions. Word has length 104 [2023-11-29 05:20:06,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:06,092 INFO L495 AbstractCegarLoop]: Abstraction has 46608 states and 67029 transitions. [2023-11-29 05:20:06,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 05:20:06,092 INFO L276 IsEmpty]: Start isEmpty. Operand 46608 states and 67029 transitions. [2023-11-29 05:20:06,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 05:20:06,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:06,095 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 05:20:06,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 05:20:06,095 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:06,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:06,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1454227140, now seen corresponding path program 1 times [2023-11-29 05:20:06,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:06,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219398420] [2023-11-29 05:20:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:06,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:06,214 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 05:20:06,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:06,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219398420] [2023-11-29 05:20:06,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219398420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:20:06,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:20:06,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:20:06,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129527037] [2023-11-29 05:20:06,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:20:06,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:20:06,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:06,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:20:06,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:20:06,216 INFO L87 Difference]: Start difference. First operand 46608 states and 67029 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 05:20:07,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:07,080 INFO L93 Difference]: Finished difference Result 68372 states and 98311 transitions. [2023-11-29 05:20:07,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:20:07,080 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 05:20:07,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:07,101 INFO L225 Difference]: With dead ends: 68372 [2023-11-29 05:20:07,101 INFO L226 Difference]: Without dead ends: 24850 [2023-11-29 05:20:07,119 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 05:20:07,119 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 05:20:07,120 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 05:20:07,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24850 states. [2023-11-29 05:20:08,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24850 to 24848. [2023-11-29 05:20:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24848 states, 24846 states have (on average 1.4278757144007084) internal successors, (35477), 24847 states have internal predecessors, (35477), 0 states have call successors, (0), 0 states 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 05:20:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24848 states to 24848 states and 35477 transitions. [2023-11-29 05:20:08,087 INFO L78 Accepts]: Start accepts. Automaton has 24848 states and 35477 transitions. Word has length 105 [2023-11-29 05:20:08,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:08,088 INFO L495 AbstractCegarLoop]: Abstraction has 24848 states and 35477 transitions. [2023-11-29 05:20:08,088 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 05:20:08,088 INFO L276 IsEmpty]: Start isEmpty. Operand 24848 states and 35477 transitions. [2023-11-29 05:20:08,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 05:20:08,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:08,090 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 05:20:08,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 05:20:08,091 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:08,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:08,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1420709910, now seen corresponding path program 1 times [2023-11-29 05:20:08,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:08,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133855724] [2023-11-29 05:20:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:08,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:08,206 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 05:20:08,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:08,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133855724] [2023-11-29 05:20:08,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133855724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:20:08,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:20:08,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:20:08,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105101703] [2023-11-29 05:20:08,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:20:08,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:20:08,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:08,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:20:08,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:20:08,208 INFO L87 Difference]: Start difference. First operand 24848 states and 35477 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 05:20:08,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:08,655 INFO L93 Difference]: Finished difference Result 35732 states and 50983 transitions. [2023-11-29 05:20:08,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:20:08,656 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 05:20:08,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:08,667 INFO L225 Difference]: With dead ends: 35732 [2023-11-29 05:20:08,667 INFO L226 Difference]: Without dead ends: 13970 [2023-11-29 05:20:08,677 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 05:20:08,677 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 05:20:08,678 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 05:20:08,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13970 states. [2023-11-29 05:20:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13970 to 13968. [2023-11-29 05:20:09,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13968 states, 13966 states have (on average 1.4203780610052985) internal successors, (19837), 13967 states have internal predecessors, (19837), 0 states have call successors, (0), 0 states 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 05:20:09,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13968 states to 13968 states and 19837 transitions. [2023-11-29 05:20:09,123 INFO L78 Accepts]: Start accepts. Automaton has 13968 states and 19837 transitions. Word has length 107 [2023-11-29 05:20:09,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:09,123 INFO L495 AbstractCegarLoop]: Abstraction has 13968 states and 19837 transitions. [2023-11-29 05:20:09,123 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 05:20:09,123 INFO L276 IsEmpty]: Start isEmpty. Operand 13968 states and 19837 transitions. [2023-11-29 05:20:09,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 05:20:09,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:09,125 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 05:20:09,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 05:20:09,125 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:09,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:09,125 INFO L85 PathProgramCache]: Analyzing trace with hash 736661528, now seen corresponding path program 1 times [2023-11-29 05:20:09,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:09,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480498092] [2023-11-29 05:20:09,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:09,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:09,200 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 05:20:09,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:09,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480498092] [2023-11-29 05:20:09,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480498092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:20:09,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:20:09,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:20:09,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084411524] [2023-11-29 05:20:09,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:20:09,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:20:09,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:09,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:20:09,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:20:09,202 INFO L87 Difference]: Start difference. First operand 13968 states and 19837 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 05:20:09,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:09,417 INFO L93 Difference]: Finished difference Result 19412 states and 27523 transitions. [2023-11-29 05:20:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:20:09,418 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 05:20:09,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:09,425 INFO L225 Difference]: With dead ends: 19412 [2023-11-29 05:20:09,425 INFO L226 Difference]: Without dead ends: 8530 [2023-11-29 05:20:09,430 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 05:20:09,431 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 05:20:09,431 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 05:20:09,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8530 states. [2023-11-29 05:20:09,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8530 to 8528. [2023-11-29 05:20:09,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8528 states, 8526 states have (on average 1.41742904058175) internal successors, (12085), 8527 states have internal predecessors, (12085), 0 states have call successors, (0), 0 states 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 05:20:09,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8528 states to 8528 states and 12085 transitions. [2023-11-29 05:20:09,672 INFO L78 Accepts]: Start accepts. Automaton has 8528 states and 12085 transitions. Word has length 109 [2023-11-29 05:20:09,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:09,672 INFO L495 AbstractCegarLoop]: Abstraction has 8528 states and 12085 transitions. [2023-11-29 05:20:09,673 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 05:20:09,673 INFO L276 IsEmpty]: Start isEmpty. Operand 8528 states and 12085 transitions. [2023-11-29 05:20:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 05:20:09,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:09,674 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 05:20:09,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 05:20:09,675 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:09,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:09,675 INFO L85 PathProgramCache]: Analyzing trace with hash 265667014, now seen corresponding path program 1 times [2023-11-29 05:20:09,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:09,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022550193] [2023-11-29 05:20:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:09,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:09,796 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 05:20:09,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:09,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022550193] [2023-11-29 05:20:09,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022550193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:20:09,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:20:09,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:20:09,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024130569] [2023-11-29 05:20:09,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:20:09,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:20:09,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:09,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:20:09,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:20:09,799 INFO L87 Difference]: Start difference. First operand 8528 states and 12085 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 05:20:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:09,969 INFO L93 Difference]: Finished difference Result 11252 states and 15895 transitions. [2023-11-29 05:20:09,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:20:09,969 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 05:20:09,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:09,973 INFO L225 Difference]: With dead ends: 11252 [2023-11-29 05:20:09,973 INFO L226 Difference]: Without dead ends: 5810 [2023-11-29 05:20:09,976 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 05:20:09,976 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 05:20:09,976 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 05:20:09,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5810 states. [2023-11-29 05:20:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5810 to 5808. [2023-11-29 05:20:10,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5808 states, 5806 states have (on average 1.4197382018601448) internal successors, (8243), 5807 states have internal predecessors, (8243), 0 states have call successors, (0), 0 states 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 05:20:10,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 8243 transitions. [2023-11-29 05:20:10,106 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 8243 transitions. Word has length 111 [2023-11-29 05:20:10,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:10,106 INFO L495 AbstractCegarLoop]: Abstraction has 5808 states and 8243 transitions. [2023-11-29 05:20:10,106 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 05:20:10,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 8243 transitions. [2023-11-29 05:20:10,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 05:20:10,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:10,108 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 05:20:10,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 05:20:10,108 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:10,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:10,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1141889804, now seen corresponding path program 1 times [2023-11-29 05:20:10,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:10,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468494760] [2023-11-29 05:20:10,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:10,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:10,213 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 05:20:10,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:10,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468494760] [2023-11-29 05:20:10,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468494760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:20:10,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:20:10,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:20:10,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136102070] [2023-11-29 05:20:10,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:20:10,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:20:10,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:10,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:20:10,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:20:10,216 INFO L87 Difference]: Start difference. First operand 5808 states and 8243 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 05:20:10,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:10,322 INFO L93 Difference]: Finished difference Result 7172 states and 10132 transitions. [2023-11-29 05:20:10,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:20:10,322 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 05:20:10,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:10,325 INFO L225 Difference]: With dead ends: 7172 [2023-11-29 05:20:10,326 INFO L226 Difference]: Without dead ends: 4450 [2023-11-29 05:20:10,327 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 05:20:10,328 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 05:20:10,328 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 05:20:10,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4450 states. [2023-11-29 05:20:10,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4450 to 4448. [2023-11-29 05:20:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 4446 states have (on average 1.4257759784075574) internal successors, (6339), 4447 states have internal predecessors, (6339), 0 states have call successors, (0), 0 states 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 05:20:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 6339 transitions. [2023-11-29 05:20:10,417 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 6339 transitions. Word has length 113 [2023-11-29 05:20:10,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:10,417 INFO L495 AbstractCegarLoop]: Abstraction has 4448 states and 6339 transitions. [2023-11-29 05:20:10,418 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 05:20:10,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 6339 transitions. [2023-11-29 05:20:10,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:20:10,418 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:10,418 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 05:20:10,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 05:20:10,419 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:10,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:10,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1126603170, now seen corresponding path program 1 times [2023-11-29 05:20:10,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:10,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342805251] [2023-11-29 05:20:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:10,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:11,382 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 05:20:11,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:11,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342805251] [2023-11-29 05:20:11,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342805251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:20:11,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059101252] [2023-11-29 05:20:11,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:11,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:20:11,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:20:11,388 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:20:11,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:20:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:11,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:20:11,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:20:11,765 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 05:20:11,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:20:11,994 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 05:20:11,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059101252] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:20:11,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:20:11,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-11-29 05:20:11,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027683600] [2023-11-29 05:20:11,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:20:11,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 05:20:11,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:11,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 05:20:11,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:20:11,997 INFO L87 Difference]: Start difference. First operand 4448 states and 6339 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 05:20:14,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:14,834 INFO L93 Difference]: Finished difference Result 15701 states and 21605 transitions. [2023-11-29 05:20:14,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 05:20:14,834 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 05:20:14,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:14,847 INFO L225 Difference]: With dead ends: 15701 [2023-11-29 05:20:14,847 INFO L226 Difference]: Without dead ends: 14339 [2023-11-29 05:20:14,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=720, Invalid=3062, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 05:20:14,852 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 12810 mSDsluCounter, 5114 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12810 SdHoareTripleChecker+Valid, 6656 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:20:14,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12810 Valid, 6656 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 05:20:14,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14339 states. [2023-11-29 05:20:15,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14339 to 13951. [2023-11-29 05:20:15,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13951 states, 13949 states have (on average 1.3514230410782135) internal successors, (18851), 13950 states have internal predecessors, (18851), 0 states have call successors, (0), 0 states 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 05:20:15,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13951 states to 13951 states and 18851 transitions. [2023-11-29 05:20:15,311 INFO L78 Accepts]: Start accepts. Automaton has 13951 states and 18851 transitions. Word has length 115 [2023-11-29 05:20:15,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:15,311 INFO L495 AbstractCegarLoop]: Abstraction has 13951 states and 18851 transitions. [2023-11-29 05:20:15,311 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 05:20:15,311 INFO L276 IsEmpty]: Start isEmpty. Operand 13951 states and 18851 transitions. [2023-11-29 05:20:15,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 05:20:15,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:15,312 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 05:20:15,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:20:15,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:20:15,513 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:15,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash 630724613, now seen corresponding path program 1 times [2023-11-29 05:20:15,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:15,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630660419] [2023-11-29 05:20:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:15,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:16,246 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 05:20:16,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:16,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630660419] [2023-11-29 05:20:16,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630660419] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:20:16,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326674630] [2023-11-29 05:20:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:16,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:20:16,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:20:16,248 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:20:16,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:20:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:16,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:20:16,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:20:16,989 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 05:20:16,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:20:18,069 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 05:20:18,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326674630] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:20:18,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:20:18,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2023-11-29 05:20:18,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954800649] [2023-11-29 05:20:18,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:20:18,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 05:20:18,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:18,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 05:20:18,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:20:18,073 INFO L87 Difference]: Start difference. First operand 13951 states and 18851 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 05:20:21,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:21,078 INFO L93 Difference]: Finished difference Result 44297 states and 59229 transitions. [2023-11-29 05:20:21,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 05:20:21,078 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 05:20:21,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:21,109 INFO L225 Difference]: With dead ends: 44297 [2023-11-29 05:20:21,110 INFO L226 Difference]: Without dead ends: 33552 [2023-11-29 05:20:21,121 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 05:20:21,121 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 23158 mSDsluCounter, 6840 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23158 SdHoareTripleChecker+Valid, 8383 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:20:21,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23158 Valid, 8383 Invalid, 1136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:20:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33552 states. [2023-11-29 05:20:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33552 to 25162. [2023-11-29 05:20:22,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25162 states, 25160 states have (on average 1.3252384737678855) internal successors, (33343), 25161 states have internal predecessors, (33343), 0 states have call successors, (0), 0 states 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 05:20:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25162 states to 25162 states and 33343 transitions. [2023-11-29 05:20:22,195 INFO L78 Accepts]: Start accepts. Automaton has 25162 states and 33343 transitions. Word has length 116 [2023-11-29 05:20:22,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:22,195 INFO L495 AbstractCegarLoop]: Abstraction has 25162 states and 33343 transitions. [2023-11-29 05:20:22,195 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 05:20:22,195 INFO L276 IsEmpty]: Start isEmpty. Operand 25162 states and 33343 transitions. [2023-11-29 05:20:22,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 05:20:22,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:22,197 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 05:20:22,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:20:22,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:20:22,398 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:22,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:22,399 INFO L85 PathProgramCache]: Analyzing trace with hash -583933101, now seen corresponding path program 1 times [2023-11-29 05:20:22,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:22,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046971757] [2023-11-29 05:20:22,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:22,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:22,780 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 05:20:22,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:22,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046971757] [2023-11-29 05:20:22,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046971757] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:20:22,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101743817] [2023-11-29 05:20:22,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:22,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:20:22,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:20:22,781 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:20:22,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:20:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:22,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:20:22,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:20:23,473 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 05:20:23,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:20:25,209 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 05:20:25,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101743817] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:20:25,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:20:25,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-11-29 05:20:25,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222587086] [2023-11-29 05:20:25,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:20:25,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 05:20:25,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:25,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 05:20:25,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-11-29 05:20:25,212 INFO L87 Difference]: Start difference. First operand 25162 states and 33343 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 05:20:28,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:28,356 INFO L93 Difference]: Finished difference Result 67186 states and 87814 transitions. [2023-11-29 05:20:28,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:20:28,357 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 05:20:28,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:28,402 INFO L225 Difference]: With dead ends: 67186 [2023-11-29 05:20:28,402 INFO L226 Difference]: Without dead ends: 45860 [2023-11-29 05:20:28,420 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 05:20:28,420 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 13893 mSDsluCounter, 8312 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13893 SdHoareTripleChecker+Valid, 9852 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:20:28,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13893 Valid, 9852 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:20:28,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45860 states. [2023-11-29 05:20:30,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45860 to 44752. [2023-11-29 05:20:30,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44752 states, 44750 states have (on average 1.3100335195530726) internal successors, (58624), 44751 states have internal predecessors, (58624), 0 states have call successors, (0), 0 states 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 05:20:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44752 states to 44752 states and 58624 transitions. [2023-11-29 05:20:30,702 INFO L78 Accepts]: Start accepts. Automaton has 44752 states and 58624 transitions. Word has length 116 [2023-11-29 05:20:30,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:30,703 INFO L495 AbstractCegarLoop]: Abstraction has 44752 states and 58624 transitions. [2023-11-29 05:20:30,703 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 05:20:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 44752 states and 58624 transitions. [2023-11-29 05:20:30,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 05:20:30,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:30,705 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 05:20:30,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 05:20:30,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:20:30,906 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:30,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:30,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1406076224, now seen corresponding path program 1 times [2023-11-29 05:20:30,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:30,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907367216] [2023-11-29 05:20:30,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:30,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,217 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 05:20:31,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:31,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907367216] [2023-11-29 05:20:31,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907367216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:20:31,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638905243] [2023-11-29 05:20:31,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:31,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:20:31,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:20:31,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:20:31,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:20:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:20:31,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:20:31,885 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 05:20:31,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:20:32,970 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 05:20:32,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638905243] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:20:32,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:20:32,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-11-29 05:20:32,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580215949] [2023-11-29 05:20:32,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:20:32,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 05:20:32,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:32,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 05:20:32,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:20:32,973 INFO L87 Difference]: Start difference. First operand 44752 states and 58624 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 05:20:41,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:41,211 INFO L93 Difference]: Finished difference Result 214582 states and 278672 transitions. [2023-11-29 05:20:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 05:20:41,211 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 05:20:41,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:41,377 INFO L225 Difference]: With dead ends: 214582 [2023-11-29 05:20:41,377 INFO L226 Difference]: Without dead ends: 173472 [2023-11-29 05:20:41,418 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 05:20:41,418 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 25009 mSDsluCounter, 6959 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25009 SdHoareTripleChecker+Valid, 8529 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:20:41,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25009 Valid, 8529 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:20:41,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173472 states. [2023-11-29 05:20:49,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173472 to 166056. [2023-11-29 05:20:49,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166056 states, 166054 states have (on average 1.2757054933937153) internal successors, (211836), 166055 states have internal predecessors, (211836), 0 states have call successors, (0), 0 states 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 05:20:50,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166056 states to 166056 states and 211836 transitions. [2023-11-29 05:20:50,176 INFO L78 Accepts]: Start accepts. Automaton has 166056 states and 211836 transitions. Word has length 117 [2023-11-29 05:20:50,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:50,176 INFO L495 AbstractCegarLoop]: Abstraction has 166056 states and 211836 transitions. [2023-11-29 05:20:50,176 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 05:20:50,176 INFO L276 IsEmpty]: Start isEmpty. Operand 166056 states and 211836 transitions. [2023-11-29 05:20:50,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 05:20:50,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:50,180 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 05:20:50,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:20:50,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:20:50,380 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:50,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:50,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1385367079, now seen corresponding path program 1 times [2023-11-29 05:20:50,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:50,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922149899] [2023-11-29 05:20:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:50,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:50,733 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 05:20:50,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:50,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922149899] [2023-11-29 05:20:50,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922149899] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:20:50,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459903905] [2023-11-29 05:20:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:50,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:20:50,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:20:50,735 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:20:50,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:20:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:50,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:20:50,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:20:51,799 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 05:20:51,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:20:53,265 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 05:20:53,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459903905] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:20:53,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:20:53,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-29 05:20:53,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275666168] [2023-11-29 05:20:53,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:20:53,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 05:20:53,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:53,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 05:20:53,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:20:53,269 INFO L87 Difference]: Start difference. First operand 166056 states and 211836 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 05:21:08,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:21:08,442 INFO L93 Difference]: Finished difference Result 493313 states and 627191 transitions. [2023-11-29 05:21:08,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:21:08,442 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 05:21:08,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:21:08,873 INFO L225 Difference]: With dead ends: 493313 [2023-11-29 05:21:08,874 INFO L226 Difference]: Without dead ends: 350543 [2023-11-29 05:21:08,941 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 05:21:08,942 INFO L413 NwaCegarLoop]: 1550 mSDtfsCounter, 12038 mSDsluCounter, 8420 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12038 SdHoareTripleChecker+Valid, 9970 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:21:08,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12038 Valid, 9970 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:21:09,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350543 states. [2023-11-29 05:21:24,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350543 to 332115. [2023-11-29 05:21:24,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332115 states, 332113 states have (on average 1.26039932191754) internal successors, (418595), 332114 states have internal predecessors, (418595), 0 states have call successors, (0), 0 states 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 05:21:25,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332115 states to 332115 states and 418595 transitions. [2023-11-29 05:21:25,408 INFO L78 Accepts]: Start accepts. Automaton has 332115 states and 418595 transitions. Word has length 118 [2023-11-29 05:21:25,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:21:25,408 INFO L495 AbstractCegarLoop]: Abstraction has 332115 states and 418595 transitions. [2023-11-29 05:21:25,408 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 05:21:25,409 INFO L276 IsEmpty]: Start isEmpty. Operand 332115 states and 418595 transitions. [2023-11-29 05:21:25,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 05:21:25,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:21:25,414 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 05:21:25,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:21:25,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:21:25,615 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:21:25,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:21:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash -251020096, now seen corresponding path program 1 times [2023-11-29 05:21:25,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:21:25,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439610618] [2023-11-29 05:21:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:21:25,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:21:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:26,313 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 05:21:26,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:21:26,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439610618] [2023-11-29 05:21:26,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439610618] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:21:26,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213727860] [2023-11-29 05:21:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:21:26,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:21:26,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:21:26,315 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:21:26,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:21:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:26,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:21:26,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:21:27,356 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 05:21:27,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:21:29,021 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 05:21:29,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213727860] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:21:29,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:21:29,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-29 05:21:29,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302322655] [2023-11-29 05:21:29,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:21:29,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 05:21:29,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:21:29,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 05:21:29,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:21:29,024 INFO L87 Difference]: Start difference. First operand 332115 states and 418595 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 05:21:44,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:21:44,383 INFO L93 Difference]: Finished difference Result 629272 states and 790766 transitions. [2023-11-29 05:21:44,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:21:44,384 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 05:21:44,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:21:44,916 INFO L225 Difference]: With dead ends: 629272 [2023-11-29 05:21:44,916 INFO L226 Difference]: Without dead ends: 352399 [2023-11-29 05:21:45,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 05:21:45,016 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 24597 mSDsluCounter, 7912 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24597 SdHoareTripleChecker+Valid, 9457 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:21:45,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24597 Valid, 9457 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:21:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352399 states. [2023-11-29 05:22:01,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352399 to 291443. [2023-11-29 05:22:01,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291443 states, 291441 states have (on average 1.2435450056786794) internal successors, (362420), 291442 states have internal predecessors, (362420), 0 states have call successors, (0), 0 states 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 05:22:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291443 states to 291443 states and 362420 transitions. [2023-11-29 05:22:01,694 INFO L78 Accepts]: Start accepts. Automaton has 291443 states and 362420 transitions. Word has length 119 [2023-11-29 05:22:01,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:22:01,694 INFO L495 AbstractCegarLoop]: Abstraction has 291443 states and 362420 transitions. [2023-11-29 05:22:01,694 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 05:22:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 291443 states and 362420 transitions. [2023-11-29 05:22:01,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 05:22:01,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:22:01,700 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 05:22:01,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:22:01,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 05:22:01,900 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:22:01,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:01,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1222665943, now seen corresponding path program 1 times [2023-11-29 05:22:01,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:01,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554674028] [2023-11-29 05:22:01,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:01,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:02,453 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 05:22:02,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:02,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554674028] [2023-11-29 05:22:02,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554674028] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:22:02,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457516278] [2023-11-29 05:22:02,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:02,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:22:02,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:22:02,455 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:22:02,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:22:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:02,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 05:22:02,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:22:03,043 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 05:22:03,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:22:04,007 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 05:22:04,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457516278] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:22:04,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:22:04,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-11-29 05:22:04,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523300197] [2023-11-29 05:22:04,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:22:04,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 05:22:04,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:04,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 05:22:04,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:22:04,009 INFO L87 Difference]: Start difference. First operand 291443 states and 362420 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 05:22:32,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:22:32,122 INFO L93 Difference]: Finished difference Result 863947 states and 1074608 transitions. [2023-11-29 05:22:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:22:32,123 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 05:22:32,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:22:32,968 INFO L225 Difference]: With dead ends: 863947 [2023-11-29 05:22:32,968 INFO L226 Difference]: Without dead ends: 604860 [2023-11-29 05:22:33,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 05:22:33,106 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 12580 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12580 SdHoareTripleChecker+Valid, 5065 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:22:33,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12580 Valid, 5065 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:22:33,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604860 states. [2023-11-29 05:23:03,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604860 to 584120. [2023-11-29 05:23:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584120 states, 584118 states have (on average 1.2328245320294873) internal successors, (720115), 584119 states have internal predecessors, (720115), 0 states have call successors, (0), 0 states 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 05:23:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584120 states to 584120 states and 720115 transitions. [2023-11-29 05:23:05,570 INFO L78 Accepts]: Start accepts. Automaton has 584120 states and 720115 transitions. Word has length 120 [2023-11-29 05:23:05,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:05,570 INFO L495 AbstractCegarLoop]: Abstraction has 584120 states and 720115 transitions. [2023-11-29 05:23:05,570 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 05:23:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 584120 states and 720115 transitions. [2023-11-29 05:23:05,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 05:23:05,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:05,585 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 05:23:05,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:23:05,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:05,785 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:05,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:05,786 INFO L85 PathProgramCache]: Analyzing trace with hash -199989600, now seen corresponding path program 1 times [2023-11-29 05:23:05,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:05,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514533506] [2023-11-29 05:23:05,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:05,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:07,153 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 05:23:07,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:07,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514533506] [2023-11-29 05:23:07,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514533506] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:07,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550707470] [2023-11-29 05:23:07,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:07,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:07,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:07,154 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:07,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:23:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:07,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 05:23:07,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:08,646 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 05:23:08,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:10,069 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 05:23:10,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550707470] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:10,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:23:10,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 41 [2023-11-29 05:23:10,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708157592] [2023-11-29 05:23:10,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:10,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 05:23:10,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:10,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 05:23:10,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1508, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 05:23:10,072 INFO L87 Difference]: Start difference. First operand 584120 states and 720115 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 05:25:33,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:25:33,432 INFO L93 Difference]: Finished difference Result 1917554 states and 2364101 transitions. [2023-11-29 05:25:33,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 360 states. [2023-11-29 05:25:33,433 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 05:25:33,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:25:36,563 INFO L225 Difference]: With dead ends: 1917554 [2023-11-29 05:25:36,563 INFO L226 Difference]: Without dead ends: 1745528 [2023-11-29 05:25:36,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71802 ImplicationChecksByTransitivity, 51.4s TimeCoverageRelationStatistics Valid=20388, Invalid=137618, Unknown=0, NotChecked=0, Total=158006 [2023-11-29 05:25:36,932 INFO L413 NwaCegarLoop]: 1674 mSDtfsCounter, 33183 mSDsluCounter, 29231 mSDsCounter, 0 mSdLazyCounter, 6600 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33183 SdHoareTripleChecker+Valid, 30905 SdHoareTripleChecker+Invalid, 6927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 6600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:25:36,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33183 Valid, 30905 Invalid, 6927 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [327 Valid, 6600 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-29 05:25:38,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745528 states. [2023-11-29 05:26:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745528 to 729336. [2023-11-29 05:26:31,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729336 states, 729334 states have (on average 1.2347347031675473) internal successors, (900534), 729335 states have internal predecessors, (900534), 0 states have call successors, (0), 0 states 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 05:26:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729336 states to 729336 states and 900534 transitions. [2023-11-29 05:26:33,626 INFO L78 Accepts]: Start accepts. Automaton has 729336 states and 900534 transitions. Word has length 121 [2023-11-29 05:26:33,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:26:33,627 INFO L495 AbstractCegarLoop]: Abstraction has 729336 states and 900534 transitions. [2023-11-29 05:26:33,627 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 05:26:33,627 INFO L276 IsEmpty]: Start isEmpty. Operand 729336 states and 900534 transitions. [2023-11-29 05:26:33,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 05:26:33,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:26:33,636 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 05:26:33,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:26:33,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:26:33,837 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:26:33,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:26:33,838 INFO L85 PathProgramCache]: Analyzing trace with hash 651259880, now seen corresponding path program 1 times [2023-11-29 05:26:33,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:26:33,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592248616] [2023-11-29 05:26:33,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:26:33,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:26:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:34,818 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 05:26:34,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:26:34,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592248616] [2023-11-29 05:26:34,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592248616] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:26:34,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912953419] [2023-11-29 05:26:34,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:26:34,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:26:34,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:26:34,820 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:26:34,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:26:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:34,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 05:26:34,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:26:36,435 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 05:26:36,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:26:37,721 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 05:26:37,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912953419] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:26:37,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:26:37,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 15] total 35 [2023-11-29 05:26:37,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533241974] [2023-11-29 05:26:37,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:26:37,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 05:26:37,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:26:37,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 05:26:37,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1015, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 05:26:37,724 INFO L87 Difference]: Start difference. First operand 729336 states and 900534 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 05:27:26,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:27:26,392 INFO L93 Difference]: Finished difference Result 996370 states and 1220293 transitions. [2023-11-29 05:27:26,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 05:27:26,393 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 05:27:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:27:27,607 INFO L225 Difference]: With dead ends: 996370 [2023-11-29 05:27:27,607 INFO L226 Difference]: Without dead ends: 815162 [2023-11-29 05:27:27,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=740, Invalid=2566, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 05:27:27,765 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 8799 mSDsluCounter, 19868 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8799 SdHoareTripleChecker+Valid, 21409 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:27:27,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8799 Valid, 21409 Invalid, 1028 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:27:28,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815162 states. [2023-11-29 05:28:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815162 to 681536. [2023-11-29 05:28:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681536 states, 681534 states have (on average 1.2324550205859135) internal successors, (839960), 681535 states have internal predecessors, (839960), 0 states have call successors, (0), 0 states 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 05:28:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681536 states to 681536 states and 839960 transitions. [2023-11-29 05:28:15,571 INFO L78 Accepts]: Start accepts. Automaton has 681536 states and 839960 transitions. Word has length 121 [2023-11-29 05:28:15,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:15,572 INFO L495 AbstractCegarLoop]: Abstraction has 681536 states and 839960 transitions. [2023-11-29 05:28:15,572 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 05:28:15,572 INFO L276 IsEmpty]: Start isEmpty. Operand 681536 states and 839960 transitions. [2023-11-29 05:28:15,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 05:28:15,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:15,596 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 05:28:15,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:28:15,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 05:28:15,802 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:15,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:15,802 INFO L85 PathProgramCache]: Analyzing trace with hash 695297696, now seen corresponding path program 1 times [2023-11-29 05:28:15,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:15,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141658147] [2023-11-29 05:28:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:15,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:16,793 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 05:28:16,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:16,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141658147] [2023-11-29 05:28:16,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141658147] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:28:16,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479958970] [2023-11-29 05:28:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:16,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:28:16,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:28:16,794 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:28:16,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfb6ddd4-8069-4830-817f-dc501d1f2e66/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:28:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:16,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 05:28:16,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:28:18,504 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 05:28:18,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:28:19,849 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 05:28:19,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479958970] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:28:19,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:28:19,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2023-11-29 05:28:19,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347542195] [2023-11-29 05:28:19,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:28:19,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 05:28:19,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:19,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 05:28:19,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-11-29 05:28:19,851 INFO L87 Difference]: Start difference. First operand 681536 states and 839960 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 05:29:47,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:29:47,156 INFO L93 Difference]: Finished difference Result 1619077 states and 1999415 transitions. [2023-11-29 05:29:47,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 05:29:47,157 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 05:29:47,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:29:49,126 INFO L225 Difference]: With dead ends: 1619077 [2023-11-29 05:29:49,126 INFO L226 Difference]: Without dead ends: 1434041 [2023-11-29 05:29:49,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=812, Invalid=3220, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 05:29:49,365 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 13332 mSDsluCounter, 12667 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13332 SdHoareTripleChecker+Valid, 14218 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:29:49,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13332 Valid, 14218 Invalid, 1149 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 05:29:50,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434041 states.