./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014be2ae-8c96-4d2e-a684-596d750d9c9a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014be2ae-8c96-4d2e-a684-596d750d9c9a/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014be2ae-8c96-4d2e-a684-596d750d9c9a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014be2ae-8c96-4d2e-a684-596d750d9c9a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014be2ae-8c96-4d2e-a684-596d750d9c9a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014be2ae-8c96-4d2e-a684-596d750d9c9a/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 e1d9709d5a0621fd4bc0599bfe40ccbc8c215c029862756c658cfcd57bd9db9f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:06:00,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:06:00,662 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014be2ae-8c96-4d2e-a684-596d750d9c9a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:06:00,671 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:06:00,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:06:00,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:06:00,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:06:00,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:06:00,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:06:00,725 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:06:00,726 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:06:00,727 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:06:00,727 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:06:00,729 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:06:00,730 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:06:00,730 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:06:00,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:06:00,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:06:00,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:06:00,732 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:06:00,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:06:00,733 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:06:00,734 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:06:00,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:06:00,755 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:06:00,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:06:00,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:06:00,757 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:06:00,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:06:00,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:06:00,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:06:00,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:06:00,760 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:06:00,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:06:00,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:06:00,760 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:06:00,761 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:06:00,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:06:00,761 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:06:00,762 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_014be2ae-8c96-4d2e-a684-596d750d9c9a/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014be2ae-8c96-4d2e-a684-596d750d9c9a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1d9709d5a0621fd4bc0599bfe40ccbc8c215c029862756c658cfcd57bd9db9f [2023-11-06 22:06:01,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:06:01,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:06:01,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:06:01,069 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:06:01,070 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:06:01,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014be2ae-8c96-4d2e-a684-596d750d9c9a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label03.c [2023-11-06 22:06:04,285 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:06:04,810 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:06:04,810 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014be2ae-8c96-4d2e-a684-596d750d9c9a/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label03.c [2023-11-06 22:06:04,846 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014be2ae-8c96-4d2e-a684-596d750d9c9a/bin/uautomizer-verify-WvqO1wxjHP/data/ff94640a2/04e326535fa0415896a013f869b9557e/FLAG9b77142bc [2023-11-06 22:06:04,862 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014be2ae-8c96-4d2e-a684-596d750d9c9a/bin/uautomizer-verify-WvqO1wxjHP/data/ff94640a2/04e326535fa0415896a013f869b9557e [2023-11-06 22:06:04,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:06:04,866 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:06:04,868 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:06:04,868 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:06:04,873 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:06:04,874 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:06:04" (1/1) ... [2023-11-06 22:06:04,875 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f19dfaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:04, skipping insertion in model container [2023-11-06 22:06:04,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:06:04" (1/1) ... [2023-11-06 22:06:05,080 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:06:05,452 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_014be2ae-8c96-4d2e-a684-596d750d9c9a/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label03.c[15510,15523] [2023-11-06 22:06:05,519 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_014be2ae-8c96-4d2e-a684-596d750d9c9a/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label03.c[17847,17860] [2023-11-06 22:06:06,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:06:06,554 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:06:06,611 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_014be2ae-8c96-4d2e-a684-596d750d9c9a/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label03.c[15510,15523] [2023-11-06 22:06:06,617 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_014be2ae-8c96-4d2e-a684-596d750d9c9a/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label03.c[17847,17860] [2023-11-06 22:06:07,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:06:07,236 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:06:07,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07 WrapperNode [2023-11-06 22:06:07,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:06:07,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:06:07,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:06:07,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:06:07,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:07,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:07,767 INFO L138 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5150 [2023-11-06 22:06:07,768 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:06:07,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:06:07,769 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:06:07,769 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:06:07,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:07,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:07,840 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:07,840 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:08,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:08,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:08,325 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:08,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:08,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:06:08,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:06:08,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:06:08,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:06:08,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (1/1) ... [2023-11-06 22:06:08,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:06:08,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014be2ae-8c96-4d2e-a684-596d750d9c9a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:06:08,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014be2ae-8c96-4d2e-a684-596d750d9c9a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:06:08,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014be2ae-8c96-4d2e-a684-596d750d9c9a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:06:08,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:06:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:06:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:06:08,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:06:08,718 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:06:08,720 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:06:14,042 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:06:14,058 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:06:14,058 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:06:14,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:06:14 BoogieIcfgContainer [2023-11-06 22:06:14,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:06:14,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:06:14,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:06:14,069 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:06:14,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:06:04" (1/3) ... [2023-11-06 22:06:14,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3115420b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:06:14, skipping insertion in model container [2023-11-06 22:06:14,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:06:07" (2/3) ... [2023-11-06 22:06:14,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3115420b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:06:14, skipping insertion in model container [2023-11-06 22:06:14,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:06:14" (3/3) ... [2023-11-06 22:06:14,072 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label03.c [2023-11-06 22:06:14,092 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:06:14,093 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:06:14,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:06:14,182 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=LoopsAndPotentialCycles, 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;@614555bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:06:14,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:06:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 916 states, 913 states have (on average 1.9036144578313252) internal successors, (1738), 915 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:14,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:06:14,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:14,201 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] [2023-11-06 22:06:14,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:14,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:14,208 INFO L85 PathProgramCache]: Analyzing trace with hash 999426629, now seen corresponding path program 1 times [2023-11-06 22:06:14,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:14,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884090570] [2023-11-06 22:06:14,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:14,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:14,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:14,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:14,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884090570] [2023-11-06 22:06:14,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884090570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:14,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:14,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:06:14,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789019398] [2023-11-06 22:06:14,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:14,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:14,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:14,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:14,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:14,684 INFO L87 Difference]: Start difference. First operand has 916 states, 913 states have (on average 1.9036144578313252) internal successors, (1738), 915 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:19,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:19,778 INFO L93 Difference]: Finished difference Result 2539 states and 4888 transitions. [2023-11-06 22:06:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:19,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-11-06 22:06:19,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:19,828 INFO L225 Difference]: With dead ends: 2539 [2023-11-06 22:06:19,829 INFO L226 Difference]: Without dead ends: 1601 [2023-11-06 22:06:19,840 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 [2023-11-06 22:06:19,844 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 1044 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:19,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 324 Invalid, 3208 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-06 22:06:19,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2023-11-06 22:06:19,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1601. [2023-11-06 22:06:19,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1599 states have (on average 1.8411507191994998) internal successors, (2944), 1600 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2944 transitions. [2023-11-06 22:06:20,005 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2944 transitions. Word has length 20 [2023-11-06 22:06:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:20,006 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 2944 transitions. [2023-11-06 22:06:20,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:20,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2944 transitions. [2023-11-06 22:06:20,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-06 22:06:20,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:20,010 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] [2023-11-06 22:06:20,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:06:20,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:20,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:20,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1448421831, now seen corresponding path program 1 times [2023-11-06 22:06:20,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:20,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55068652] [2023-11-06 22:06:20,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:20,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:20,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:20,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:20,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55068652] [2023-11-06 22:06:20,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55068652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:20,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:20,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:06:20,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920552778] [2023-11-06 22:06:20,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:20,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:06:20,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:20,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:06:20,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:06:20,267 INFO L87 Difference]: Start difference. First operand 1601 states and 2944 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:20,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:20,410 INFO L93 Difference]: Finished difference Result 1655 states and 3028 transitions. [2023-11-06 22:06:20,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:06:20,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-11-06 22:06:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:20,422 INFO L225 Difference]: With dead ends: 1655 [2023-11-06 22:06:20,422 INFO L226 Difference]: Without dead ends: 1601 [2023-11-06 22:06:20,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:06:20,425 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 2 mSDsluCounter, 4764 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6367 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:20,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6367 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:06:20,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2023-11-06 22:06:20,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1601. [2023-11-06 22:06:20,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1599 states have (on average 1.8161350844277673) internal successors, (2904), 1600 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:20,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2904 transitions. [2023-11-06 22:06:20,522 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2904 transitions. Word has length 26 [2023-11-06 22:06:20,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:20,523 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 2904 transitions. [2023-11-06 22:06:20,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:20,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2904 transitions. [2023-11-06 22:06:20,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:06:20,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:20,527 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] [2023-11-06 22:06:20,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:06:20,528 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:20,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:20,529 INFO L85 PathProgramCache]: Analyzing trace with hash -295358701, now seen corresponding path program 1 times [2023-11-06 22:06:20,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:20,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161552137] [2023-11-06 22:06:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:20,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:20,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:20,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161552137] [2023-11-06 22:06:20,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161552137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:20,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:20,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:06:20,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122244071] [2023-11-06 22:06:20,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:20,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:06:20,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:20,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:06:20,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:06:20,873 INFO L87 Difference]: Start difference. First operand 1601 states and 2904 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:21,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:21,360 INFO L93 Difference]: Finished difference Result 2201 states and 3864 transitions. [2023-11-06 22:06:21,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:06:21,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-06 22:06:21,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:21,378 INFO L225 Difference]: With dead ends: 2201 [2023-11-06 22:06:21,378 INFO L226 Difference]: Without dead ends: 2151 [2023-11-06 22:06:21,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:06:21,387 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 9855 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9855 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:21,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9855 Valid, 3085 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:06:21,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2023-11-06 22:06:21,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 1649. [2023-11-06 22:06:21,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1647 states have (on average 1.8099574984820888) internal successors, (2981), 1648 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2981 transitions. [2023-11-06 22:06:21,487 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2981 transitions. Word has length 65 [2023-11-06 22:06:21,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:21,488 INFO L495 AbstractCegarLoop]: Abstraction has 1649 states and 2981 transitions. [2023-11-06 22:06:21,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:21,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2981 transitions. [2023-11-06 22:06:21,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 22:06:21,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:21,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:21,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:06:21,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:21,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:21,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1787564125, now seen corresponding path program 1 times [2023-11-06 22:06:21,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:21,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012365685] [2023-11-06 22:06:21,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:21,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:21,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:21,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:21,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012365685] [2023-11-06 22:06:21,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012365685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:21,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:21,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:06:21,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864862469] [2023-11-06 22:06:21,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:21,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:21,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:21,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:21,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:21,702 INFO L87 Difference]: Start difference. First operand 1649 states and 2981 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:21,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:21,800 INFO L93 Difference]: Finished difference Result 1834 states and 3276 transitions. [2023-11-06 22:06:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:21,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-06 22:06:21,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:21,815 INFO L225 Difference]: With dead ends: 1834 [2023-11-06 22:06:21,815 INFO L226 Difference]: Without dead ends: 1736 [2023-11-06 22:06:21,819 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 [2023-11-06 22:06:21,827 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1492 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:21,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1634 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:06:21,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2023-11-06 22:06:21,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1732. [2023-11-06 22:06:21,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1730 states have (on average 1.7982658959537572) internal successors, (3111), 1731 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:21,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 3111 transitions. [2023-11-06 22:06:21,928 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 3111 transitions. Word has length 67 [2023-11-06 22:06:21,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:21,931 INFO L495 AbstractCegarLoop]: Abstraction has 1732 states and 3111 transitions. [2023-11-06 22:06:21,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:21,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 3111 transitions. [2023-11-06 22:06:21,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 22:06:21,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:21,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:21,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:06:21,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:21,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:21,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1721070613, now seen corresponding path program 1 times [2023-11-06 22:06:21,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:21,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481103816] [2023-11-06 22:06:21,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:21,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:22,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:22,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481103816] [2023-11-06 22:06:22,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481103816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:22,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:22,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:06:22,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397440027] [2023-11-06 22:06:22,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:22,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:06:22,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:22,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:06:22,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:06:22,458 INFO L87 Difference]: Start difference. First operand 1732 states and 3111 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:22,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:22,798 INFO L93 Difference]: Finished difference Result 1915 states and 3399 transitions. [2023-11-06 22:06:22,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:06:22,798 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-06 22:06:22,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:22,811 INFO L225 Difference]: With dead ends: 1915 [2023-11-06 22:06:22,811 INFO L226 Difference]: Without dead ends: 1734 [2023-11-06 22:06:22,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:06:22,813 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 3030 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3030 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:22,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3030 Valid, 1940 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:06:22,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2023-11-06 22:06:22,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2023-11-06 22:06:22,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1730 states have (on average 1.7971098265895953) internal successors, (3109), 1731 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:22,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 3109 transitions. [2023-11-06 22:06:22,894 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 3109 transitions. Word has length 67 [2023-11-06 22:06:22,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:22,894 INFO L495 AbstractCegarLoop]: Abstraction has 1732 states and 3109 transitions. [2023-11-06 22:06:22,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:22,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 3109 transitions. [2023-11-06 22:06:22,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 22:06:22,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:22,896 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] [2023-11-06 22:06:22,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:06:22,897 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:22,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:22,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2066662853, now seen corresponding path program 1 times [2023-11-06 22:06:22,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:22,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809165942] [2023-11-06 22:06:22,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:22,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:23,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:23,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809165942] [2023-11-06 22:06:23,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809165942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:23,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:23,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:06:23,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843087162] [2023-11-06 22:06:23,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:23,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:06:23,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:23,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:06:23,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:06:23,132 INFO L87 Difference]: Start difference. First operand 1732 states and 3109 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:23,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:23,325 INFO L93 Difference]: Finished difference Result 1880 states and 3345 transitions. [2023-11-06 22:06:23,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:06:23,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-11-06 22:06:23,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:23,342 INFO L225 Difference]: With dead ends: 1880 [2023-11-06 22:06:23,342 INFO L226 Difference]: Without dead ends: 1878 [2023-11-06 22:06:23,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:06:23,348 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 68 mSDsluCounter, 4803 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 6428 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:23,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 6428 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:06:23,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2023-11-06 22:06:23,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1738. [2023-11-06 22:06:23,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1736 states have (on average 1.793778801843318) internal successors, (3114), 1737 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:23,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3114 transitions. [2023-11-06 22:06:23,429 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3114 transitions. Word has length 68 [2023-11-06 22:06:23,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:23,431 INFO L495 AbstractCegarLoop]: Abstraction has 1738 states and 3114 transitions. [2023-11-06 22:06:23,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:23,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3114 transitions. [2023-11-06 22:06:23,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 22:06:23,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:23,435 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] [2023-11-06 22:06:23,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:06:23,435 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:23,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:23,436 INFO L85 PathProgramCache]: Analyzing trace with hash 279342091, now seen corresponding path program 1 times [2023-11-06 22:06:23,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:23,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866364766] [2023-11-06 22:06:23,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:23,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:23,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:23,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866364766] [2023-11-06 22:06:23,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866364766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:23,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:23,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:06:23,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546379222] [2023-11-06 22:06:23,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:23,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:23,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:23,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:23,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:23,543 INFO L87 Difference]: Start difference. First operand 1738 states and 3114 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:23,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:23,637 INFO L93 Difference]: Finished difference Result 2096 states and 3666 transitions. [2023-11-06 22:06:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:23,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-11-06 22:06:23,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:23,649 INFO L225 Difference]: With dead ends: 2096 [2023-11-06 22:06:23,649 INFO L226 Difference]: Without dead ends: 1909 [2023-11-06 22:06:23,650 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 [2023-11-06 22:06:23,651 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 1505 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:23,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1701 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:06:23,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2023-11-06 22:06:23,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1907. [2023-11-06 22:06:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1905 states have (on average 1.7695538057742781) internal successors, (3371), 1906 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 3371 transitions. [2023-11-06 22:06:23,757 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 3371 transitions. Word has length 69 [2023-11-06 22:06:23,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:23,757 INFO L495 AbstractCegarLoop]: Abstraction has 1907 states and 3371 transitions. [2023-11-06 22:06:23,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 3371 transitions. [2023-11-06 22:06:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 22:06:23,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:23,759 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] [2023-11-06 22:06:23,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:06:23,759 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:23,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:23,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1517604107, now seen corresponding path program 1 times [2023-11-06 22:06:23,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:23,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155851168] [2023-11-06 22:06:23,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:23,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:23,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:23,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:23,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155851168] [2023-11-06 22:06:23,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155851168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:23,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:23,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:06:23,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591488355] [2023-11-06 22:06:23,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:23,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:23,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:23,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:23,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:23,828 INFO L87 Difference]: Start difference. First operand 1907 states and 3371 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:23,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:23,970 INFO L93 Difference]: Finished difference Result 2587 states and 4409 transitions. [2023-11-06 22:06:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:23,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-11-06 22:06:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:23,984 INFO L225 Difference]: With dead ends: 2587 [2023-11-06 22:06:23,985 INFO L226 Difference]: Without dead ends: 2231 [2023-11-06 22:06:23,986 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 [2023-11-06 22:06:23,988 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 1503 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:23,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1703 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:06:23,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2023-11-06 22:06:24,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2229. [2023-11-06 22:06:24,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 2227 states have (on average 1.7301302200269422) internal successors, (3853), 2228 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 3853 transitions. [2023-11-06 22:06:24,150 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 3853 transitions. Word has length 69 [2023-11-06 22:06:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:24,150 INFO L495 AbstractCegarLoop]: Abstraction has 2229 states and 3853 transitions. [2023-11-06 22:06:24,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:24,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 3853 transitions. [2023-11-06 22:06:24,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 22:06:24,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:24,152 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] [2023-11-06 22:06:24,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:06:24,152 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:24,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:24,153 INFO L85 PathProgramCache]: Analyzing trace with hash -697864693, now seen corresponding path program 1 times [2023-11-06 22:06:24,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:24,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047707570] [2023-11-06 22:06:24,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:24,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:24,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:24,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047707570] [2023-11-06 22:06:24,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047707570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:24,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:24,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:06:24,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913045685] [2023-11-06 22:06:24,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:24,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:24,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:24,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:24,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:24,224 INFO L87 Difference]: Start difference. First operand 2229 states and 3853 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:24,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:24,470 INFO L93 Difference]: Finished difference Result 3521 states and 5799 transitions. [2023-11-06 22:06:24,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:24,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-11-06 22:06:24,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:24,487 INFO L225 Difference]: With dead ends: 3521 [2023-11-06 22:06:24,488 INFO L226 Difference]: Without dead ends: 2843 [2023-11-06 22:06:24,490 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 [2023-11-06 22:06:24,492 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 1501 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:24,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1705 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:06:24,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2023-11-06 22:06:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2841. [2023-11-06 22:06:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2839 states have (on average 1.674181049665375) internal successors, (4753), 2840 states have internal predecessors, (4753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:24,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 4753 transitions. [2023-11-06 22:06:24,762 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 4753 transitions. Word has length 69 [2023-11-06 22:06:24,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:24,763 INFO L495 AbstractCegarLoop]: Abstraction has 2841 states and 4753 transitions. [2023-11-06 22:06:24,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:24,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 4753 transitions. [2023-11-06 22:06:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 22:06:24,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:24,769 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] [2023-11-06 22:06:24,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:06:24,770 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:24,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:24,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1083068171, now seen corresponding path program 1 times [2023-11-06 22:06:24,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:24,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550549288] [2023-11-06 22:06:24,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:24,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:24,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:24,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550549288] [2023-11-06 22:06:24,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550549288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:24,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:24,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:06:24,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931984032] [2023-11-06 22:06:24,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:24,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:24,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:24,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:24,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:24,930 INFO L87 Difference]: Start difference. First operand 2841 states and 4753 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:25,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:25,400 INFO L93 Difference]: Finished difference Result 5293 states and 8387 transitions. [2023-11-06 22:06:25,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:25,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-11-06 22:06:25,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:25,425 INFO L225 Difference]: With dead ends: 5293 [2023-11-06 22:06:25,425 INFO L226 Difference]: Without dead ends: 4003 [2023-11-06 22:06:25,428 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 [2023-11-06 22:06:25,429 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1499 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:25,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1707 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:06:25,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4003 states. [2023-11-06 22:06:25,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4003 to 4001. [2023-11-06 22:06:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 3999 states have (on average 1.606651662915729) internal successors, (6425), 4000 states have internal predecessors, (6425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 6425 transitions. [2023-11-06 22:06:25,937 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 6425 transitions. Word has length 69 [2023-11-06 22:06:25,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:25,938 INFO L495 AbstractCegarLoop]: Abstraction has 4001 states and 6425 transitions. [2023-11-06 22:06:25,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 6425 transitions. [2023-11-06 22:06:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 22:06:25,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:25,939 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] [2023-11-06 22:06:25,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:06:25,940 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:25,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:25,941 INFO L85 PathProgramCache]: Analyzing trace with hash 15485707, now seen corresponding path program 1 times [2023-11-06 22:06:25,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:25,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781109420] [2023-11-06 22:06:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:25,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:26,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:26,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781109420] [2023-11-06 22:06:26,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781109420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:26,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:26,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:06:26,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233389943] [2023-11-06 22:06:26,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:26,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:26,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:26,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:26,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:26,012 INFO L87 Difference]: Start difference. First operand 4001 states and 6425 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:26,982 INFO L93 Difference]: Finished difference Result 8645 states and 13179 transitions. [2023-11-06 22:06:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:26,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-11-06 22:06:26,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:27,026 INFO L225 Difference]: With dead ends: 8645 [2023-11-06 22:06:27,026 INFO L226 Difference]: Without dead ends: 6195 [2023-11-06 22:06:27,031 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 [2023-11-06 22:06:27,032 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 1507 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:27,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1707 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:06:27,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6195 states. [2023-11-06 22:06:28,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6195 to 6193. [2023-11-06 22:06:28,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6193 states, 6191 states have (on average 1.5365853658536586) internal successors, (9513), 6192 states have internal predecessors, (9513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:28,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6193 states to 6193 states and 9513 transitions. [2023-11-06 22:06:28,299 INFO L78 Accepts]: Start accepts. Automaton has 6193 states and 9513 transitions. Word has length 69 [2023-11-06 22:06:28,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:28,300 INFO L495 AbstractCegarLoop]: Abstraction has 6193 states and 9513 transitions. [2023-11-06 22:06:28,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:28,300 INFO L276 IsEmpty]: Start isEmpty. Operand 6193 states and 9513 transitions. [2023-11-06 22:06:28,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-06 22:06:28,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:28,302 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] [2023-11-06 22:06:28,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:06:28,302 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:28,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:28,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2036636858, now seen corresponding path program 1 times [2023-11-06 22:06:28,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:28,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899718149] [2023-11-06 22:06:28,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:28,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:28,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:28,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899718149] [2023-11-06 22:06:28,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899718149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:28,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:28,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:06:28,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263304223] [2023-11-06 22:06:28,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:28,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:28,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:28,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:28,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:28,384 INFO L87 Difference]: Start difference. First operand 6193 states and 9513 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:29,701 INFO L93 Difference]: Finished difference Result 11064 states and 16623 transitions. [2023-11-06 22:06:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:29,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-11-06 22:06:29,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:29,722 INFO L225 Difference]: With dead ends: 11064 [2023-11-06 22:06:29,722 INFO L226 Difference]: Without dead ends: 8437 [2023-11-06 22:06:29,728 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 [2023-11-06 22:06:29,729 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 1506 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:29,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1708 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:06:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8437 states. [2023-11-06 22:06:30,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8437 to 8435. [2023-11-06 22:06:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8435 states, 8433 states have (on average 1.503972489031187) internal successors, (12683), 8434 states have internal predecessors, (12683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:31,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8435 states to 8435 states and 12683 transitions. [2023-11-06 22:06:31,006 INFO L78 Accepts]: Start accepts. Automaton has 8435 states and 12683 transitions. Word has length 71 [2023-11-06 22:06:31,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:31,007 INFO L495 AbstractCegarLoop]: Abstraction has 8435 states and 12683 transitions. [2023-11-06 22:06:31,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:31,007 INFO L276 IsEmpty]: Start isEmpty. Operand 8435 states and 12683 transitions. [2023-11-06 22:06:31,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-06 22:06:31,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:31,011 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] [2023-11-06 22:06:31,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:06:31,011 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:31,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:31,012 INFO L85 PathProgramCache]: Analyzing trace with hash -510730107, now seen corresponding path program 1 times [2023-11-06 22:06:31,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:31,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326214970] [2023-11-06 22:06:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:31,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:31,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:31,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326214970] [2023-11-06 22:06:31,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326214970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:31,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:31,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:06:31,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210215750] [2023-11-06 22:06:31,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:31,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:06:31,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:31,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:06:31,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:06:31,344 INFO L87 Difference]: Start difference. First operand 8435 states and 12683 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 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) [2023-11-06 22:06:40,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:40,428 INFO L93 Difference]: Finished difference Result 12192 states and 19573 transitions. [2023-11-06 22:06:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:06:40,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 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 89 [2023-11-06 22:06:40,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:40,450 INFO L225 Difference]: With dead ends: 12192 [2023-11-06 22:06:40,451 INFO L226 Difference]: Without dead ends: 10688 [2023-11-06 22:06:40,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:06:40,456 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 2411 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 5943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:40,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2411 Valid, 840 Invalid, 5943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-11-06 22:06:40,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10688 states. [2023-11-06 22:06:41,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10688 to 10688. [2023-11-06 22:06:42,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10688 states, 10686 states have (on average 1.4291596481377504) internal successors, (15272), 10687 states have internal predecessors, (15272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10688 states to 10688 states and 15272 transitions. [2023-11-06 22:06:42,029 INFO L78 Accepts]: Start accepts. Automaton has 10688 states and 15272 transitions. Word has length 89 [2023-11-06 22:06:42,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:42,030 INFO L495 AbstractCegarLoop]: Abstraction has 10688 states and 15272 transitions. [2023-11-06 22:06:42,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 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) [2023-11-06 22:06:42,031 INFO L276 IsEmpty]: Start isEmpty. Operand 10688 states and 15272 transitions. [2023-11-06 22:06:42,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 22:06:42,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:42,034 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] [2023-11-06 22:06:42,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:06:42,035 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:42,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:42,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1790597010, now seen corresponding path program 1 times [2023-11-06 22:06:42,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:42,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668850017] [2023-11-06 22:06:42,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:42,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:06:42,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:42,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668850017] [2023-11-06 22:06:42,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668850017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:42,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:42,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:06:42,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246580154] [2023-11-06 22:06:42,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:42,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:06:42,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:42,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:06:42,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:06:42,271 INFO L87 Difference]: Start difference. First operand 10688 states and 15272 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:49,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:06:49,999 INFO L93 Difference]: Finished difference Result 53422 states and 76399 transitions. [2023-11-06 22:06:49,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:06:49,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 90 [2023-11-06 22:06:50,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:06:50,119 INFO L225 Difference]: With dead ends: 53422 [2023-11-06 22:06:50,119 INFO L226 Difference]: Without dead ends: 46540 [2023-11-06 22:06:50,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:06:50,137 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 8109 mSDsluCounter, 2226 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8109 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:06:50,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8109 Valid, 3868 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:06:50,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46540 states. [2023-11-06 22:06:53,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46540 to 17568. [2023-11-06 22:06:53,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17568 states, 17566 states have (on average 1.4250256176704998) internal successors, (25032), 17567 states have internal predecessors, (25032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:53,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17568 states to 17568 states and 25032 transitions. [2023-11-06 22:06:53,549 INFO L78 Accepts]: Start accepts. Automaton has 17568 states and 25032 transitions. Word has length 90 [2023-11-06 22:06:53,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:06:53,549 INFO L495 AbstractCegarLoop]: Abstraction has 17568 states and 25032 transitions. [2023-11-06 22:06:53,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:53,550 INFO L276 IsEmpty]: Start isEmpty. Operand 17568 states and 25032 transitions. [2023-11-06 22:06:53,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 22:06:53,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:06:53,554 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] [2023-11-06 22:06:53,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:06:53,554 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:06:53,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:53,555 INFO L85 PathProgramCache]: Analyzing trace with hash -552334994, now seen corresponding path program 1 times [2023-11-06 22:06:53,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:53,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545582222] [2023-11-06 22:06:53,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:53,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:06:53,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:53,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545582222] [2023-11-06 22:06:53,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545582222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:53,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:53,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:06:53,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547454634] [2023-11-06 22:06:53,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:53,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:06:53,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:53,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:06:53,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:06:53,786 INFO L87 Difference]: Start difference. First operand 17568 states and 25032 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:04,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:04,298 INFO L93 Difference]: Finished difference Result 60302 states and 86159 transitions. [2023-11-06 22:07:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:07:04,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 90 [2023-11-06 22:07:04,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:04,404 INFO L225 Difference]: With dead ends: 60302 [2023-11-06 22:07:04,404 INFO L226 Difference]: Without dead ends: 53420 [2023-11-06 22:07:04,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:07:04,421 INFO L413 NwaCegarLoop]: 1639 mSDtfsCounter, 8158 mSDsluCounter, 2154 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8158 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:04,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8158 Valid, 3793 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:07:04,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53420 states. [2023-11-06 22:07:10,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53420 to 27904. [2023-11-06 22:07:10,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27904 states, 27902 states have (on average 1.4189663823381837) internal successors, (39592), 27903 states have internal predecessors, (39592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:10,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27904 states to 27904 states and 39592 transitions. [2023-11-06 22:07:10,662 INFO L78 Accepts]: Start accepts. Automaton has 27904 states and 39592 transitions. Word has length 90 [2023-11-06 22:07:10,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:10,663 INFO L495 AbstractCegarLoop]: Abstraction has 27904 states and 39592 transitions. [2023-11-06 22:07:10,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:10,663 INFO L276 IsEmpty]: Start isEmpty. Operand 27904 states and 39592 transitions. [2023-11-06 22:07:10,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 22:07:10,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:10,669 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] [2023-11-06 22:07:10,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:07:10,669 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:10,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:10,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1527163502, now seen corresponding path program 1 times [2023-11-06 22:07:10,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:10,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450511041] [2023-11-06 22:07:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:10,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:10,928 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:07:10,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:10,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450511041] [2023-11-06 22:07:10,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450511041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:10,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:10,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:07:10,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480362743] [2023-11-06 22:07:10,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:10,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:07:10,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:10,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:07:10,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:07:10,934 INFO L87 Difference]: Start difference. First operand 27904 states and 39592 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:24,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:24,529 INFO L93 Difference]: Finished difference Result 67182 states and 95919 transitions. [2023-11-06 22:07:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:07:24,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 90 [2023-11-06 22:07:24,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:24,640 INFO L225 Difference]: With dead ends: 67182 [2023-11-06 22:07:24,640 INFO L226 Difference]: Without dead ends: 60300 [2023-11-06 22:07:24,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:07:24,665 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 8208 mSDsluCounter, 2161 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8208 SdHoareTripleChecker+Valid, 3797 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:24,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8208 Valid, 3797 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:07:24,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60300 states. [2023-11-06 22:07:31,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60300 to 34784. [2023-11-06 22:07:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34784 states, 34782 states have (on average 1.4188948306595366) internal successors, (49352), 34783 states have internal predecessors, (49352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34784 states to 34784 states and 49352 transitions. [2023-11-06 22:07:32,060 INFO L78 Accepts]: Start accepts. Automaton has 34784 states and 49352 transitions. Word has length 90 [2023-11-06 22:07:32,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:07:32,060 INFO L495 AbstractCegarLoop]: Abstraction has 34784 states and 49352 transitions. [2023-11-06 22:07:32,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:32,061 INFO L276 IsEmpty]: Start isEmpty. Operand 34784 states and 49352 transitions. [2023-11-06 22:07:32,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 22:07:32,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:07:32,067 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] [2023-11-06 22:07:32,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:07:32,068 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:07:32,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:32,068 INFO L85 PathProgramCache]: Analyzing trace with hash -986870930, now seen corresponding path program 1 times [2023-11-06 22:07:32,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:32,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514769349] [2023-11-06 22:07:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:32,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:07:32,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:32,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514769349] [2023-11-06 22:07:32,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514769349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:32,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:32,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:07:32,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973267156] [2023-11-06 22:07:32,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:32,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:07:32,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:32,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:07:32,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:07:32,352 INFO L87 Difference]: Start difference. First operand 34784 states and 49352 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:47,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:47,320 INFO L93 Difference]: Finished difference Result 74062 states and 105679 transitions. [2023-11-06 22:07:47,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:07:47,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 90 [2023-11-06 22:07:47,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:07:47,421 INFO L225 Difference]: With dead ends: 74062 [2023-11-06 22:07:47,421 INFO L226 Difference]: Without dead ends: 67180 [2023-11-06 22:07:47,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:07:47,446 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 8112 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8112 SdHoareTripleChecker+Valid, 3888 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:07:47,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8112 Valid, 3888 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:07:47,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67180 states.