./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 24c0edd0e5f96364946e218befc8d4e48724a125bbdaeb43992b42af0d599b66 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:13:48,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:13:48,523 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:13:48,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:13:48,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:13:48,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:13:48,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:13:48,554 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:13:48,555 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:13:48,555 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:13:48,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:13:48,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:13:48,557 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:13:48,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:13:48,558 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:13:48,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:13:48,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:13:48,560 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:13:48,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:13:48,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:13:48,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:13:48,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:13:48,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:13:48,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:13:48,565 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:13:48,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:13:48,566 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:13:48,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:13:48,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:13:48,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:13:48,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:13:48,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:13:48,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:13:48,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:13:48,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:13:48,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:13:48,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:13:48,569 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:13:48,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:13:48,570 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:13:48,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:13:48,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:13:48,571 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_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24c0edd0e5f96364946e218befc8d4e48724a125bbdaeb43992b42af0d599b66 [2023-11-29 05:13:48,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:13:48,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:13:48,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:13:48,812 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:13:48,812 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:13:48,814 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-29 05:13:51,586 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:13:52,080 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:13:52,081 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-29 05:13:52,111 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/data/eaafdcc84/5285c0b09be6441babe155310c5bff27/FLAG712a1ecc2 [2023-11-29 05:13:52,126 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/data/eaafdcc84/5285c0b09be6441babe155310c5bff27 [2023-11-29 05:13:52,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:13:52,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:13:52,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:13:52,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:13:52,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:13:52,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:13:52" (1/1) ... [2023-11-29 05:13:52,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5069c6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:52, skipping insertion in model container [2023-11-29 05:13:52,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:13:52" (1/1) ... [2023-11-29 05:13:52,272 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:13:52,610 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_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[15584,15597] [2023-11-29 05:13:52,662 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_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[21139,21152] [2023-11-29 05:13:53,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:13:53,370 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:13:53,406 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_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[15584,15597] [2023-11-29 05:13:53,417 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_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/sv-benchmarks/c/combinations/pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[21139,21152] [2023-11-29 05:13:53,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:13:53,839 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:13:53,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:53 WrapperNode [2023-11-29 05:13:53,840 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:13:53,841 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:13:53,841 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:13:53,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:13:53,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:53" (1/1) ... [2023-11-29 05:13:53,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:53" (1/1) ... [2023-11-29 05:13:54,122 INFO L138 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5148 [2023-11-29 05:13:54,123 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:13:54,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:13:54,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:13:54,123 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:13:54,132 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:53" (1/1) ... [2023-11-29 05:13:54,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:53" (1/1) ... [2023-11-29 05:13:54,161 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:53" (1/1) ... [2023-11-29 05:13:54,310 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 05:13:54,311 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:53" (1/1) ... [2023-11-29 05:13:54,311 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:53" (1/1) ... [2023-11-29 05:13:54,424 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:53" (1/1) ... [2023-11-29 05:13:54,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:53" (1/1) ... [2023-11-29 05:13:54,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:53" (1/1) ... [2023-11-29 05:13:54,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:53" (1/1) ... [2023-11-29 05:13:54,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:13:54,538 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:13:54,538 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:13:54,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:13:54,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:53" (1/1) ... [2023-11-29 05:13:54,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:13:54,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:13:54,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:13:54,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:13:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:13:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:13:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:13:54,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:13:54,713 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:13:54,715 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:13:59,456 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:13:59,520 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:13:59,521 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 05:13:59,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:13:59 BoogieIcfgContainer [2023-11-29 05:13:59,522 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:13:59,524 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:13:59,524 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:13:59,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:13:59,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:13:52" (1/3) ... [2023-11-29 05:13:59,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e476ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:13:59, skipping insertion in model container [2023-11-29 05:13:59,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:53" (2/3) ... [2023-11-29 05:13:59,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e476ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:13:59, skipping insertion in model container [2023-11-29 05:13:59,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:13:59" (3/3) ... [2023-11-29 05:13:59,530 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-29 05:13:59,544 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:13:59,544 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 05:13:59,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:13:59,613 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@66e57f0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:13:59,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 05:13:59,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:13:59,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 05:13:59,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:59,631 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] [2023-11-29 05:13:59,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:59,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:59,636 INFO L85 PathProgramCache]: Analyzing trace with hash -713532304, now seen corresponding path program 1 times [2023-11-29 05:13:59,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:59,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181752435] [2023-11-29 05:13:59,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:59,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:59,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:13:59,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:59,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181752435] [2023-11-29 05:13:59,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181752435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:59,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:59,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:13:59,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007958373] [2023-11-29 05:13:59,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:59,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:13:59,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:59,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:13:59,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:13:59,882 INFO L87 Difference]: Start difference. First operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:13:59,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:59,972 INFO L93 Difference]: Finished difference Result 1653 states and 3253 transitions. [2023-11-29 05:13:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:13:59,974 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-11-29 05:13:59,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:59,993 INFO L225 Difference]: With dead ends: 1653 [2023-11-29 05:13:59,993 INFO L226 Difference]: Without dead ends: 845 [2023-11-29 05:13:59,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:14:00,002 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:00,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1598 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:00,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-11-29 05:14:00,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-11-29 05:14:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.896797153024911) internal successors, (1599), 844 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:00,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1599 transitions. [2023-11-29 05:14:00,077 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1599 transitions. Word has length 23 [2023-11-29 05:14:00,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:00,078 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1599 transitions. [2023-11-29 05:14:00,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:00,078 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1599 transitions. [2023-11-29 05:14:00,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 05:14:00,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:00,080 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] [2023-11-29 05:14:00,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:14:00,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:00,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:00,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1892491250, now seen corresponding path program 1 times [2023-11-29 05:14:00,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:00,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815686473] [2023-11-29 05:14:00,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:00,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:00,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:00,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815686473] [2023-11-29 05:14:00,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815686473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:00,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:00,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:14:00,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374863782] [2023-11-29 05:14:00,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:00,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:14:00,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:00,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:14:00,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:14:00,355 INFO L87 Difference]: Start difference. First operand 845 states and 1599 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:00,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:00,448 INFO L93 Difference]: Finished difference Result 895 states and 1678 transitions. [2023-11-29 05:14:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:14:00,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-11-29 05:14:00,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:00,453 INFO L225 Difference]: With dead ends: 895 [2023-11-29 05:14:00,453 INFO L226 Difference]: Without dead ends: 845 [2023-11-29 05:14:00,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:14:00,455 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:00,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4744 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:14:00,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-11-29 05:14:00,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-11-29 05:14:00,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.849347568208778) internal successors, (1559), 844 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:00,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1559 transitions. [2023-11-29 05:14:00,474 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1559 transitions. Word has length 23 [2023-11-29 05:14:00,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:00,475 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1559 transitions. [2023-11-29 05:14:00,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:00,475 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1559 transitions. [2023-11-29 05:14:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 05:14:00,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:00,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:00,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:14:00,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:00,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:00,478 INFO L85 PathProgramCache]: Analyzing trace with hash -308037014, now seen corresponding path program 1 times [2023-11-29 05:14:00,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:00,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705696231] [2023-11-29 05:14:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:00,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:00,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:00,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705696231] [2023-11-29 05:14:00,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705696231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:00,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:00,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:14:00,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18622815] [2023-11-29 05:14:00,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:00,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:00,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:00,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:00,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:00,606 INFO L87 Difference]: Start difference. First operand 845 states and 1559 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:04,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:04,295 INFO L93 Difference]: Finished difference Result 2349 states and 4432 transitions. [2023-11-29 05:14:04,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:04,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-11-29 05:14:04,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:04,306 INFO L225 Difference]: With dead ends: 2349 [2023-11-29 05:14:04,306 INFO L226 Difference]: Without dead ends: 1596 [2023-11-29 05:14:04,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:04,309 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 891 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:04,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 545 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 05:14:04,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2023-11-29 05:14:04,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2023-11-29 05:14:04,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.6223337515683813) internal successors, (2586), 1595 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:04,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2586 transitions. [2023-11-29 05:14:04,343 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2586 transitions. Word has length 47 [2023-11-29 05:14:04,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:04,344 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2586 transitions. [2023-11-29 05:14:04,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:04,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2586 transitions. [2023-11-29 05:14:04,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 05:14:04,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:04,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:04,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:14:04,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:04,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:04,348 INFO L85 PathProgramCache]: Analyzing trace with hash -808348940, now seen corresponding path program 1 times [2023-11-29 05:14:04,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:04,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030155294] [2023-11-29 05:14:04,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:04,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:04,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:04,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030155294] [2023-11-29 05:14:04,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030155294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:04,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:04,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:14:04,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965256225] [2023-11-29 05:14:04,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:04,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:14:04,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:04,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:14:04,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:14:04,542 INFO L87 Difference]: Start difference. First operand 1596 states and 2586 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:04,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:04,953 INFO L93 Difference]: Finished difference Result 2160 states and 3498 transitions. [2023-11-29 05:14:04,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:14:04,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-29 05:14:04,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:04,967 INFO L225 Difference]: With dead ends: 2160 [2023-11-29 05:14:04,967 INFO L226 Difference]: Without dead ends: 2113 [2023-11-29 05:14:04,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:14:04,969 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 9675 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9675 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:04,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9675 Valid, 3624 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:14:04,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2023-11-29 05:14:05,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 1641. [2023-11-29 05:14:05,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1639 states have (on average 1.6223306894447833) internal successors, (2659), 1640 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:05,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2659 transitions. [2023-11-29 05:14:05,023 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2659 transitions. Word has length 62 [2023-11-29 05:14:05,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:05,024 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 2659 transitions. [2023-11-29 05:14:05,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:05,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2659 transitions. [2023-11-29 05:14:05,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 05:14:05,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:05,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:05,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:14:05,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:05,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:05,028 INFO L85 PathProgramCache]: Analyzing trace with hash 431995268, now seen corresponding path program 1 times [2023-11-29 05:14:05,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:05,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708516553] [2023-11-29 05:14:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:05,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:05,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:05,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708516553] [2023-11-29 05:14:05,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708516553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:05,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:05,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:05,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210164021] [2023-11-29 05:14:05,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:05,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:05,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:05,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:05,122 INFO L87 Difference]: Start difference. First operand 1641 states and 2659 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:05,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:05,175 INFO L93 Difference]: Finished difference Result 1814 states and 2938 transitions. [2023-11-29 05:14:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:05,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-29 05:14:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:05,187 INFO L225 Difference]: With dead ends: 1814 [2023-11-29 05:14:05,187 INFO L226 Difference]: Without dead ends: 1722 [2023-11-29 05:14:05,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:05,189 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1488 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:05,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:05,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-11-29 05:14:05,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2023-11-29 05:14:05,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.6210710128055879) internal successors, (2785), 1719 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2785 transitions. [2023-11-29 05:14:05,238 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2785 transitions. Word has length 64 [2023-11-29 05:14:05,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:05,239 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2785 transitions. [2023-11-29 05:14:05,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:05,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2785 transitions. [2023-11-29 05:14:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 05:14:05,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:05,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:05,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:14:05,241 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:05,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:05,242 INFO L85 PathProgramCache]: Analyzing trace with hash 434140220, now seen corresponding path program 1 times [2023-11-29 05:14:05,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:05,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315711267] [2023-11-29 05:14:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:05,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:05,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:05,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315711267] [2023-11-29 05:14:05,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315711267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:05,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:05,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:14:05,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765281044] [2023-11-29 05:14:05,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:05,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:14:05,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:05,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:14:05,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:14:05,593 INFO L87 Difference]: Start difference. First operand 1720 states and 2785 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:05,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:05,936 INFO L93 Difference]: Finished difference Result 1893 states and 3061 transitions. [2023-11-29 05:14:05,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:14:05,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-29 05:14:05,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:05,948 INFO L225 Difference]: With dead ends: 1893 [2023-11-29 05:14:05,948 INFO L226 Difference]: Without dead ends: 1722 [2023-11-29 05:14:05,949 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 [2023-11-29 05:14:05,950 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 4510 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:05,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4510 Valid, 1915 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:14:05,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-11-29 05:14:05,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2023-11-29 05:14:05,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.619906868451688) internal successors, (2783), 1719 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:06,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2783 transitions. [2023-11-29 05:14:06,001 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2783 transitions. Word has length 64 [2023-11-29 05:14:06,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:06,002 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2783 transitions. [2023-11-29 05:14:06,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:06,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2783 transitions. [2023-11-29 05:14:06,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 05:14:06,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:06,003 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] [2023-11-29 05:14:06,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:14:06,004 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:06,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:06,004 INFO L85 PathProgramCache]: Analyzing trace with hash 444744363, now seen corresponding path program 1 times [2023-11-29 05:14:06,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:06,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970064120] [2023-11-29 05:14:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:06,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:06,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:06,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970064120] [2023-11-29 05:14:06,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970064120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:06,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:06,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:14:06,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453297315] [2023-11-29 05:14:06,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:06,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:14:06,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:06,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:14:06,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:14:06,218 INFO L87 Difference]: Start difference. First operand 1720 states and 2783 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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) [2023-11-29 05:14:06,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:06,289 INFO L93 Difference]: Finished difference Result 1728 states and 2792 transitions. [2023-11-29 05:14:06,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:14:06,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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 [2023-11-29 05:14:06,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:06,300 INFO L225 Difference]: With dead ends: 1728 [2023-11-29 05:14:06,300 INFO L226 Difference]: Without dead ends: 1726 [2023-11-29 05:14:06,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:14:06,302 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4657 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:06,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4657 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:06,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2023-11-29 05:14:06,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1724. [2023-11-29 05:14:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1722 states have (on average 1.6178861788617886) internal successors, (2786), 1723 states have internal predecessors, (2786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:06,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2786 transitions. [2023-11-29 05:14:06,353 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2786 transitions. Word has length 65 [2023-11-29 05:14:06,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:06,353 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2786 transitions. [2023-11-29 05:14:06,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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) [2023-11-29 05:14:06,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2786 transitions. [2023-11-29 05:14:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 05:14:06,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:06,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:06,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:14:06,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:06,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash 239452988, now seen corresponding path program 1 times [2023-11-29 05:14:06,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:06,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852695963] [2023-11-29 05:14:06,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:06,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:06,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852695963] [2023-11-29 05:14:06,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852695963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:06,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:06,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:06,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567145908] [2023-11-29 05:14:06,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:06,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:06,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:06,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:06,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:06,420 INFO L87 Difference]: Start difference. First operand 1724 states and 2786 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:06,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:06,477 INFO L93 Difference]: Finished difference Result 1910 states and 3079 transitions. [2023-11-29 05:14:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:06,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 05:14:06,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:06,488 INFO L225 Difference]: With dead ends: 1910 [2023-11-29 05:14:06,488 INFO L226 Difference]: Without dead ends: 1814 [2023-11-29 05:14:06,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:06,490 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1504 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:06,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1692 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:06,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2023-11-29 05:14:06,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1812. [2023-11-29 05:14:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1810 states have (on average 1.6149171270718232) internal successors, (2923), 1811 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:06,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2923 transitions. [2023-11-29 05:14:06,542 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2923 transitions. Word has length 66 [2023-11-29 05:14:06,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:06,543 INFO L495 AbstractCegarLoop]: Abstraction has 1812 states and 2923 transitions. [2023-11-29 05:14:06,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:06,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2923 transitions. [2023-11-29 05:14:06,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 05:14:06,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:06,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:06,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:14:06,544 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:06,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:06,545 INFO L85 PathProgramCache]: Analyzing trace with hash -170933700, now seen corresponding path program 1 times [2023-11-29 05:14:06,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:06,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922881312] [2023-11-29 05:14:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:06,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:06,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:06,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922881312] [2023-11-29 05:14:06,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922881312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:06,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:06,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:06,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844588836] [2023-11-29 05:14:06,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:06,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:06,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:06,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:06,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:06,605 INFO L87 Difference]: Start difference. First operand 1812 states and 2923 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:06,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:06,668 INFO L93 Difference]: Finished difference Result 2310 states and 3703 transitions. [2023-11-29 05:14:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:06,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 05:14:06,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:06,681 INFO L225 Difference]: With dead ends: 2310 [2023-11-29 05:14:06,681 INFO L226 Difference]: Without dead ends: 2049 [2023-11-29 05:14:06,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:06,683 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 1502 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:06,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:06,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2023-11-29 05:14:06,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2047. [2023-11-29 05:14:06,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2045 states have (on average 1.6063569682151588) internal successors, (3285), 2046 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:06,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 3285 transitions. [2023-11-29 05:14:06,746 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 3285 transitions. Word has length 66 [2023-11-29 05:14:06,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:06,747 INFO L495 AbstractCegarLoop]: Abstraction has 2047 states and 3285 transitions. [2023-11-29 05:14:06,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:06,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 3285 transitions. [2023-11-29 05:14:06,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 05:14:06,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:06,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:06,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:14:06,748 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:06,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:06,749 INFO L85 PathProgramCache]: Analyzing trace with hash -399572932, now seen corresponding path program 1 times [2023-11-29 05:14:06,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:06,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077976654] [2023-11-29 05:14:06,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:06,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:06,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:06,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077976654] [2023-11-29 05:14:06,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077976654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:06,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:06,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:06,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637299442] [2023-11-29 05:14:06,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:06,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:06,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:06,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:06,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:06,807 INFO L87 Difference]: Start difference. First operand 2047 states and 3285 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:06,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:06,877 INFO L93 Difference]: Finished difference Result 2991 states and 4747 transitions. [2023-11-29 05:14:06,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:06,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 05:14:06,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:06,892 INFO L225 Difference]: With dead ends: 2991 [2023-11-29 05:14:06,892 INFO L226 Difference]: Without dead ends: 2495 [2023-11-29 05:14:06,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:06,894 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1498 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:06,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1694 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:06,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2023-11-29 05:14:06,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2493. [2023-11-29 05:14:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2491 states have (on average 1.5901244480128462) internal successors, (3961), 2492 states have internal predecessors, (3961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:07,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3961 transitions. [2023-11-29 05:14:07,002 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3961 transitions. Word has length 66 [2023-11-29 05:14:07,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:07,002 INFO L495 AbstractCegarLoop]: Abstraction has 2493 states and 3961 transitions. [2023-11-29 05:14:07,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:07,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3961 transitions. [2023-11-29 05:14:07,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 05:14:07,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:07,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:07,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:14:07,004 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:07,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:07,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1025228996, now seen corresponding path program 1 times [2023-11-29 05:14:07,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:07,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724287226] [2023-11-29 05:14:07,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:07,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:07,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:07,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724287226] [2023-11-29 05:14:07,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724287226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:07,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:07,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:07,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219422664] [2023-11-29 05:14:07,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:07,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:07,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:07,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:07,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:07,064 INFO L87 Difference]: Start difference. First operand 2493 states and 3961 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:07,153 INFO L93 Difference]: Finished difference Result 4281 states and 6691 transitions. [2023-11-29 05:14:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:07,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 05:14:07,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:07,171 INFO L225 Difference]: With dead ends: 4281 [2023-11-29 05:14:07,172 INFO L226 Difference]: Without dead ends: 3339 [2023-11-29 05:14:07,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:07,174 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1496 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:07,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1696 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:07,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2023-11-29 05:14:07,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3337. [2023-11-29 05:14:07,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3337 states, 3335 states have (on average 1.5643178410794603) internal successors, (5217), 3336 states have internal predecessors, (5217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3337 states to 3337 states and 5217 transitions. [2023-11-29 05:14:07,289 INFO L78 Accepts]: Start accepts. Automaton has 3337 states and 5217 transitions. Word has length 66 [2023-11-29 05:14:07,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:07,290 INFO L495 AbstractCegarLoop]: Abstraction has 3337 states and 5217 transitions. [2023-11-29 05:14:07,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:07,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states and 5217 transitions. [2023-11-29 05:14:07,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 05:14:07,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:07,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:07,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:14:07,291 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:07,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:07,292 INFO L85 PathProgramCache]: Analyzing trace with hash -136495556, now seen corresponding path program 1 times [2023-11-29 05:14:07,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:07,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749272664] [2023-11-29 05:14:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:07,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:07,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:07,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749272664] [2023-11-29 05:14:07,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749272664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:07,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:07,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:07,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17469584] [2023-11-29 05:14:07,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:07,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:07,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:07,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:07,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:07,351 INFO L87 Difference]: Start difference. First operand 3337 states and 5217 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:07,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:07,485 INFO L93 Difference]: Finished difference Result 6717 states and 10291 transitions. [2023-11-29 05:14:07,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:07,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 05:14:07,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:07,511 INFO L225 Difference]: With dead ends: 6717 [2023-11-29 05:14:07,511 INFO L226 Difference]: Without dead ends: 4931 [2023-11-29 05:14:07,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:07,515 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1494 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:07,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:07,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2023-11-29 05:14:07,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 4929. [2023-11-29 05:14:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4927 states have (on average 1.5297341181246193) internal successors, (7537), 4928 states have internal predecessors, (7537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 7537 transitions. [2023-11-29 05:14:07,705 INFO L78 Accepts]: Start accepts. Automaton has 4929 states and 7537 transitions. Word has length 66 [2023-11-29 05:14:07,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:07,706 INFO L495 AbstractCegarLoop]: Abstraction has 4929 states and 7537 transitions. [2023-11-29 05:14:07,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:07,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4929 states and 7537 transitions. [2023-11-29 05:14:07,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 05:14:07,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:07,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:07,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:14:07,707 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:07,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:07,708 INFO L85 PathProgramCache]: Analyzing trace with hash -439516868, now seen corresponding path program 1 times [2023-11-29 05:14:07,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:07,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297075846] [2023-11-29 05:14:07,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:07,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:07,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:07,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297075846] [2023-11-29 05:14:07,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297075846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:07,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:07,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:07,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907054981] [2023-11-29 05:14:07,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:07,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:07,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:07,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:07,769 INFO L87 Difference]: Start difference. First operand 4929 states and 7537 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:08,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:08,083 INFO L93 Difference]: Finished difference Result 11301 states and 16915 transitions. [2023-11-29 05:14:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:08,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 05:14:08,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:08,105 INFO L225 Difference]: With dead ends: 11301 [2023-11-29 05:14:08,105 INFO L226 Difference]: Without dead ends: 7923 [2023-11-29 05:14:08,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:08,112 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1500 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:08,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1700 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:08,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7923 states. [2023-11-29 05:14:08,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7923 to 7921. [2023-11-29 05:14:08,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7921 states, 7919 states have (on average 1.4892031822199772) internal successors, (11793), 7920 states have internal predecessors, (11793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 11793 transitions. [2023-11-29 05:14:08,449 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 11793 transitions. Word has length 66 [2023-11-29 05:14:08,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:08,449 INFO L495 AbstractCegarLoop]: Abstraction has 7921 states and 11793 transitions. [2023-11-29 05:14:08,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:08,449 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 11793 transitions. [2023-11-29 05:14:08,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 05:14:08,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:08,453 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:08,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:14:08,453 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:08,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:08,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1981614661, now seen corresponding path program 1 times [2023-11-29 05:14:08,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:08,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314595308] [2023-11-29 05:14:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:08,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:14:08,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:08,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314595308] [2023-11-29 05:14:08,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314595308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:08,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:08,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:14:08,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429501609] [2023-11-29 05:14:08,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:08,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:14:08,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:08,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:14:08,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:14:08,661 INFO L87 Difference]: Start difference. First operand 7921 states and 11793 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) [2023-11-29 05:14:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:09,771 INFO L93 Difference]: Finished difference Result 45567 states and 66616 transitions. [2023-11-29 05:14:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:14:09,772 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 86 [2023-11-29 05:14:09,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:09,857 INFO L225 Difference]: With dead ends: 45567 [2023-11-29 05:14:09,858 INFO L226 Difference]: Without dead ends: 41085 [2023-11-29 05:14:09,870 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 [2023-11-29 05:14:09,871 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8061 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8061 SdHoareTripleChecker+Valid, 3964 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:09,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8061 Valid, 3964 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:14:09,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41085 states. [2023-11-29 05:14:10,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41085 to 13361. [2023-11-29 05:14:10,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13361 states, 13359 states have (on average 1.4696459315817052) internal successors, (19633), 13360 states have internal predecessors, (19633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13361 states to 13361 states and 19633 transitions. [2023-11-29 05:14:10,644 INFO L78 Accepts]: Start accepts. Automaton has 13361 states and 19633 transitions. Word has length 86 [2023-11-29 05:14:10,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:10,645 INFO L495 AbstractCegarLoop]: Abstraction has 13361 states and 19633 transitions. [2023-11-29 05:14:10,645 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) [2023-11-29 05:14:10,645 INFO L276 IsEmpty]: Start isEmpty. Operand 13361 states and 19633 transitions. [2023-11-29 05:14:10,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 05:14:10,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:10,649 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:10,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:14:10,649 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:10,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:10,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1902965947, now seen corresponding path program 1 times [2023-11-29 05:14:10,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:10,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224266558] [2023-11-29 05:14:10,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:10,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:14:10,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:10,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224266558] [2023-11-29 05:14:10,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224266558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:10,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:10,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:14:10,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964759082] [2023-11-29 05:14:10,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:10,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:14:10,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:10,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:14:10,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:14:10,858 INFO L87 Difference]: Start difference. First operand 13361 states and 19633 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) [2023-11-29 05:14:12,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:12,099 INFO L93 Difference]: Finished difference Result 51935 states and 75832 transitions. [2023-11-29 05:14:12,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:14:12,100 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 86 [2023-11-29 05:14:12,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:12,163 INFO L225 Difference]: With dead ends: 51935 [2023-11-29 05:14:12,163 INFO L226 Difference]: Without dead ends: 45565 [2023-11-29 05:14:12,176 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 [2023-11-29 05:14:12,176 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 8061 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8061 SdHoareTripleChecker+Valid, 3958 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:12,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8061 Valid, 3958 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:14:12,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45565 states. [2023-11-29 05:14:12,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45565 to 21969. [2023-11-29 05:14:12,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21969 states, 21967 states have (on average 1.4575044384758957) internal successors, (32017), 21968 states have internal predecessors, (32017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:12,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21969 states to 21969 states and 32017 transitions. [2023-11-29 05:14:12,974 INFO L78 Accepts]: Start accepts. Automaton has 21969 states and 32017 transitions. Word has length 86 [2023-11-29 05:14:12,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:12,975 INFO L495 AbstractCegarLoop]: Abstraction has 21969 states and 32017 transitions. [2023-11-29 05:14:12,975 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) [2023-11-29 05:14:12,975 INFO L276 IsEmpty]: Start isEmpty. Operand 21969 states and 32017 transitions. [2023-11-29 05:14:12,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 05:14:12,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:12,980 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:12,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:14:12,980 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:12,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:12,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1674326715, now seen corresponding path program 1 times [2023-11-29 05:14:12,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:12,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151291445] [2023-11-29 05:14:12,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:12,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:14:13,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151291445] [2023-11-29 05:14:13,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151291445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:13,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:13,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:14:13,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603613085] [2023-11-29 05:14:13,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:13,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:14:13,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:13,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:14:13,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:14:13,151 INFO L87 Difference]: Start difference. First operand 21969 states and 32017 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) [2023-11-29 05:14:14,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:14,570 INFO L93 Difference]: Finished difference Result 58303 states and 85016 transitions. [2023-11-29 05:14:14,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:14:14,570 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 86 [2023-11-29 05:14:14,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:14,640 INFO L225 Difference]: With dead ends: 58303 [2023-11-29 05:14:14,640 INFO L226 Difference]: Without dead ends: 51933 [2023-11-29 05:14:14,652 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 [2023-11-29 05:14:14,652 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8101 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8101 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:14,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8101 Valid, 3975 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:14:14,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51933 states. [2023-11-29 05:14:15,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51933 to 28337. [2023-11-29 05:14:15,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28337 states, 28335 states have (on average 1.4540674077995412) internal successors, (41201), 28336 states have internal predecessors, (41201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28337 states to 28337 states and 41201 transitions. [2023-11-29 05:14:15,637 INFO L78 Accepts]: Start accepts. Automaton has 28337 states and 41201 transitions. Word has length 86 [2023-11-29 05:14:15,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:15,637 INFO L495 AbstractCegarLoop]: Abstraction has 28337 states and 41201 transitions. [2023-11-29 05:14:15,637 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2023-11-29 05:14:15,637 INFO L276 IsEmpty]: Start isEmpty. Operand 28337 states and 41201 transitions. [2023-11-29 05:14:15,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 05:14:15,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:15,641 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:15,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:14:15,641 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:15,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:15,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1048670651, now seen corresponding path program 1 times [2023-11-29 05:14:15,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:15,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608993392] [2023-11-29 05:14:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:15,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:14:15,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:15,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608993392] [2023-11-29 05:14:15,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608993392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:15,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:15,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:14:15,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407940071] [2023-11-29 05:14:15,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:15,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:14:15,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:15,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:14:15,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:14:15,799 INFO L87 Difference]: Start difference. First operand 28337 states and 41201 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:17,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:17,456 INFO L93 Difference]: Finished difference Result 64671 states and 94200 transitions. [2023-11-29 05:14:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:14:17,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-29 05:14:17,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:17,514 INFO L225 Difference]: With dead ends: 64671 [2023-11-29 05:14:17,514 INFO L226 Difference]: Without dead ends: 58301 [2023-11-29 05:14:17,529 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 [2023-11-29 05:14:17,530 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8155 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8155 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:17,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8155 Valid, 3938 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:14:17,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58301 states. [2023-11-29 05:14:18,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58301 to 34705. [2023-11-29 05:14:18,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34705 states, 34703 states have (on average 1.4518917672823675) internal successors, (50385), 34704 states have internal predecessors, (50385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:19,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34705 states to 34705 states and 50385 transitions. [2023-11-29 05:14:19,009 INFO L78 Accepts]: Start accepts. Automaton has 34705 states and 50385 transitions. Word has length 86 [2023-11-29 05:14:19,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:19,009 INFO L495 AbstractCegarLoop]: Abstraction has 34705 states and 50385 transitions. [2023-11-29 05:14:19,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:19,009 INFO L276 IsEmpty]: Start isEmpty. Operand 34705 states and 50385 transitions. [2023-11-29 05:14:19,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 05:14:19,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:19,014 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:19,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:14:19,014 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:19,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:19,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1937404091, now seen corresponding path program 1 times [2023-11-29 05:14:19,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:19,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801106986] [2023-11-29 05:14:19,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:19,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 05:14:19,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:19,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801106986] [2023-11-29 05:14:19,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801106986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:19,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:19,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:14:19,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124050547] [2023-11-29 05:14:19,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:19,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:14:19,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:19,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:14:19,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:14:19,263 INFO L87 Difference]: Start difference. First operand 34705 states and 50385 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:21,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:21,126 INFO L93 Difference]: Finished difference Result 71039 states and 103384 transitions. [2023-11-29 05:14:21,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:14:21,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 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 86 [2023-11-29 05:14:21,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:21,198 INFO L225 Difference]: With dead ends: 71039 [2023-11-29 05:14:21,198 INFO L226 Difference]: Without dead ends: 64669 [2023-11-29 05:14:21,215 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 [2023-11-29 05:14:21,216 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8071 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8071 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:21,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8071 Valid, 3991 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:14:21,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64669 states. [2023-11-29 05:14:22,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64669 to 41073. [2023-11-29 05:14:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41073 states, 41071 states have (on average 1.4503907866864698) internal successors, (59569), 41072 states have internal predecessors, (59569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41073 states to 41073 states and 59569 transitions. [2023-11-29 05:14:22,577 INFO L78 Accepts]: Start accepts. Automaton has 41073 states and 59569 transitions. Word has length 86 [2023-11-29 05:14:22,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:22,578 INFO L495 AbstractCegarLoop]: Abstraction has 41073 states and 59569 transitions. [2023-11-29 05:14:22,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:22,578 INFO L276 IsEmpty]: Start isEmpty. Operand 41073 states and 59569 transitions. [2023-11-29 05:14:22,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 05:14:22,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:22,582 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:22,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:14:22,582 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:22,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:22,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1634382779, now seen corresponding path program 1 times [2023-11-29 05:14:22,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:22,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406631595] [2023-11-29 05:14:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:22,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 05:14:22,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:22,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406631595] [2023-11-29 05:14:22,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406631595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:22,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:22,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:14:22,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677343113] [2023-11-29 05:14:22,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:22,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:14:22,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:22,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:14:22,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:14:22,736 INFO L87 Difference]: Start difference. First operand 41073 states and 59569 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) [2023-11-29 05:14:24,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:24,717 INFO L93 Difference]: Finished difference Result 77407 states and 112568 transitions. [2023-11-29 05:14:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:14:24,718 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 86 [2023-11-29 05:14:24,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:24,795 INFO L225 Difference]: With dead ends: 77407 [2023-11-29 05:14:24,795 INFO L226 Difference]: Without dead ends: 71037 [2023-11-29 05:14:24,813 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 [2023-11-29 05:14:24,813 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 8010 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8010 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:24,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8010 Valid, 4111 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:14:24,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71037 states. [2023-11-29 05:14:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71037 to 47441. [2023-11-29 05:14:27,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.449292775986003) internal successors, (68753), 47440 states have internal predecessors, (68753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:27,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 68753 transitions. [2023-11-29 05:14:27,089 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 68753 transitions. Word has length 86 [2023-11-29 05:14:27,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:27,089 INFO L495 AbstractCegarLoop]: Abstraction has 47441 states and 68753 transitions. [2023-11-29 05:14:27,090 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) [2023-11-29 05:14:27,090 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 68753 transitions. [2023-11-29 05:14:27,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 05:14:27,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:27,096 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] [2023-11-29 05:14:27,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:14:27,097 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:27,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:27,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1298476795, now seen corresponding path program 1 times [2023-11-29 05:14:27,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:27,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050001184] [2023-11-29 05:14:27,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:27,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:27,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050001184] [2023-11-29 05:14:27,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050001184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:27,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:27,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:27,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988876770] [2023-11-29 05:14:27,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:27,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:27,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:27,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:27,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:27,265 INFO L87 Difference]: Start difference. First operand 47441 states and 68753 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:28,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:28,617 INFO L93 Difference]: Finished difference Result 93333 states and 134995 transitions. [2023-11-29 05:14:28,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:28,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-11-29 05:14:28,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:28,664 INFO L225 Difference]: With dead ends: 93333 [2023-11-29 05:14:28,664 INFO L226 Difference]: Without dead ends: 47443 [2023-11-29 05:14:28,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:28,692 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 53 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:28,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:28,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47443 states. [2023-11-29 05:14:30,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47443 to 47441. [2023-11-29 05:14:30,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.4347899407660363) internal successors, (68065), 47440 states have internal predecessors, (68065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:30,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 68065 transitions. [2023-11-29 05:14:30,276 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 68065 transitions. Word has length 87 [2023-11-29 05:14:30,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:30,277 INFO L495 AbstractCegarLoop]: Abstraction has 47441 states and 68065 transitions. [2023-11-29 05:14:30,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:30,277 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 68065 transitions. [2023-11-29 05:14:30,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 05:14:30,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:30,280 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] [2023-11-29 05:14:30,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 05:14:30,280 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:30,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:30,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1037402045, now seen corresponding path program 1 times [2023-11-29 05:14:30,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:30,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633987231] [2023-11-29 05:14:30,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:30,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:30,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:30,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633987231] [2023-11-29 05:14:30,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633987231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:30,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:30,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:30,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344520428] [2023-11-29 05:14:30,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:30,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:30,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:30,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:30,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:30,397 INFO L87 Difference]: Start difference. First operand 47441 states and 68065 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:31,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:31,147 INFO L93 Difference]: Finished difference Result 64265 states and 92328 transitions. [2023-11-29 05:14:31,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:31,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-11-29 05:14:31,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:31,162 INFO L225 Difference]: With dead ends: 64265 [2023-11-29 05:14:31,162 INFO L226 Difference]: Without dead ends: 18375 [2023-11-29 05:14:31,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:31,177 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 47 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:31,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:31,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18375 states. [2023-11-29 05:14:31,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18375 to 18368. [2023-11-29 05:14:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18368 states, 18366 states have (on average 1.4444081454862245) internal successors, (26528), 18367 states have internal predecessors, (26528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:31,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18368 states to 18368 states and 26528 transitions. [2023-11-29 05:14:31,685 INFO L78 Accepts]: Start accepts. Automaton has 18368 states and 26528 transitions. Word has length 88 [2023-11-29 05:14:31,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:31,686 INFO L495 AbstractCegarLoop]: Abstraction has 18368 states and 26528 transitions. [2023-11-29 05:14:31,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:31,686 INFO L276 IsEmpty]: Start isEmpty. Operand 18368 states and 26528 transitions. [2023-11-29 05:14:31,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 05:14:31,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:31,688 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:31,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 05:14:31,688 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:31,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1781311287, now seen corresponding path program 1 times [2023-11-29 05:14:31,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:31,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644906817] [2023-11-29 05:14:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:31,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:31,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:31,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644906817] [2023-11-29 05:14:31,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644906817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:31,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:31,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:31,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333229558] [2023-11-29 05:14:31,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:31,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:31,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:31,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:31,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:31,803 INFO L87 Difference]: Start difference. First operand 18368 states and 26528 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) 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) [2023-11-29 05:14:32,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:32,049 INFO L93 Difference]: Finished difference Result 26772 states and 38530 transitions. [2023-11-29 05:14:32,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:32,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) 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 [2023-11-29 05:14:32,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:32,057 INFO L225 Difference]: With dead ends: 26772 [2023-11-29 05:14:32,057 INFO L226 Difference]: Without dead ends: 9970 [2023-11-29 05:14:32,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:32,065 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 49 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:32,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:32,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9970 states. [2023-11-29 05:14:32,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9970 to 9968. [2023-11-29 05:14:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9968 states, 9966 states have (on average 1.4457154324703994) internal successors, (14408), 9967 states have internal predecessors, (14408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 14408 transitions. [2023-11-29 05:14:32,331 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 14408 transitions. Word has length 89 [2023-11-29 05:14:32,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:32,331 INFO L495 AbstractCegarLoop]: Abstraction has 9968 states and 14408 transitions. [2023-11-29 05:14:32,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) 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) [2023-11-29 05:14:32,331 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 14408 transitions. [2023-11-29 05:14:32,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 05:14:32,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:32,333 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:32,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:14:32,333 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:32,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:32,333 INFO L85 PathProgramCache]: Analyzing trace with hash 2081860631, now seen corresponding path program 1 times [2023-11-29 05:14:32,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:32,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626123120] [2023-11-29 05:14:32,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:32,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:32,434 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:32,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:32,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626123120] [2023-11-29 05:14:32,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626123120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:32,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:32,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:32,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379388338] [2023-11-29 05:14:32,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:32,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:32,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:32,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:32,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:32,436 INFO L87 Difference]: Start difference. First operand 9968 states and 14408 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:32,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:32,602 INFO L93 Difference]: Finished difference Result 14172 states and 20350 transitions. [2023-11-29 05:14:32,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:32,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 05:14:32,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:32,607 INFO L225 Difference]: With dead ends: 14172 [2023-11-29 05:14:32,607 INFO L226 Difference]: Without dead ends: 5770 [2023-11-29 05:14:32,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:32,611 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 46 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:32,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3104 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:32,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2023-11-29 05:14:32,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 5768. [2023-11-29 05:14:32,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5766 states have (on average 1.4582032604925426) internal successors, (8408), 5767 states have internal predecessors, (8408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:32,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 8408 transitions. [2023-11-29 05:14:32,749 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 8408 transitions. Word has length 91 [2023-11-29 05:14:32,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:32,749 INFO L495 AbstractCegarLoop]: Abstraction has 5768 states and 8408 transitions. [2023-11-29 05:14:32,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:32,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 8408 transitions. [2023-11-29 05:14:32,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 05:14:32,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:32,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:32,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 05:14:32,750 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:32,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:32,751 INFO L85 PathProgramCache]: Analyzing trace with hash 207620325, now seen corresponding path program 1 times [2023-11-29 05:14:32,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:32,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660315624] [2023-11-29 05:14:32,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:32,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:32,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:32,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660315624] [2023-11-29 05:14:32,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660315624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:32,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:32,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:32,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350496976] [2023-11-29 05:14:32,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:32,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:32,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:32,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:32,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:32,855 INFO L87 Difference]: Start difference. First operand 5768 states and 8408 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:32,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:32,942 INFO L93 Difference]: Finished difference Result 7872 states and 11350 transitions. [2023-11-29 05:14:32,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:32,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-11-29 05:14:32,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:32,946 INFO L225 Difference]: With dead ends: 7872 [2023-11-29 05:14:32,946 INFO L226 Difference]: Without dead ends: 3670 [2023-11-29 05:14:32,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:32,948 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 43 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:32,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3089 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:32,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2023-11-29 05:14:33,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3668. [2023-11-29 05:14:33,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3666 states have (on average 1.4833606110201856) internal successors, (5438), 3667 states have internal predecessors, (5438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:33,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 5438 transitions. [2023-11-29 05:14:33,027 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 5438 transitions. Word has length 93 [2023-11-29 05:14:33,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:33,027 INFO L495 AbstractCegarLoop]: Abstraction has 3668 states and 5438 transitions. [2023-11-29 05:14:33,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:33,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 5438 transitions. [2023-11-29 05:14:33,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 05:14:33,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:33,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:33,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 05:14:33,029 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:33,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:33,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1099411661, now seen corresponding path program 1 times [2023-11-29 05:14:33,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:33,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98374161] [2023-11-29 05:14:33,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:33,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:33,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:33,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98374161] [2023-11-29 05:14:33,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98374161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:33,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:33,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:33,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483274877] [2023-11-29 05:14:33,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:33,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:33,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:33,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:33,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:33,105 INFO L87 Difference]: Start difference. First operand 3668 states and 5438 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:33,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:33,162 INFO L93 Difference]: Finished difference Result 4722 states and 6895 transitions. [2023-11-29 05:14:33,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:33,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-29 05:14:33,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:33,165 INFO L225 Difference]: With dead ends: 4722 [2023-11-29 05:14:33,165 INFO L226 Difference]: Without dead ends: 2620 [2023-11-29 05:14:33,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:33,167 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 40 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:33,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3074 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:33,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2023-11-29 05:14:33,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2618. [2023-11-29 05:14:33,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 2616 states have (on average 1.5168195718654434) internal successors, (3968), 2617 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 3968 transitions. [2023-11-29 05:14:33,219 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 3968 transitions. Word has length 95 [2023-11-29 05:14:33,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:33,219 INFO L495 AbstractCegarLoop]: Abstraction has 2618 states and 3968 transitions. [2023-11-29 05:14:33,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:33,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 3968 transitions. [2023-11-29 05:14:33,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 05:14:33,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:33,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:33,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 05:14:33,220 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:33,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:33,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1010802943, now seen corresponding path program 1 times [2023-11-29 05:14:33,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:33,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939084570] [2023-11-29 05:14:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:33,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:34,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:34,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939084570] [2023-11-29 05:14:34,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939084570] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:14:34,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437468586] [2023-11-29 05:14:34,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:34,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:34,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:34,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:34,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:14:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:14:34,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:14:34,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:14:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:14:35,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437468586] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:14:35,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:14:35,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-29 05:14:35,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004278847] [2023-11-29 05:14:35,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:14:35,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:14:35,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:35,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:14:35,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:14:35,013 INFO L87 Difference]: Start difference. First operand 2618 states and 3968 transitions. Second operand has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:38,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:38,168 INFO L93 Difference]: Finished difference Result 11217 states and 15560 transitions. [2023-11-29 05:14:38,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 05:14:38,168 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 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 97 [2023-11-29 05:14:38,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:38,176 INFO L225 Difference]: With dead ends: 11217 [2023-11-29 05:14:38,176 INFO L226 Difference]: Without dead ends: 10165 [2023-11-29 05:14:38,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 05:14:38,179 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 14257 mSDsluCounter, 6451 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14257 SdHoareTripleChecker+Valid, 7974 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:38,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14257 Valid, 7974 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:14:38,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10165 states. [2023-11-29 05:14:38,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10165 to 9705. [2023-11-29 05:14:38,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9705 states, 9703 states have (on average 1.3705039678449964) internal successors, (13298), 9704 states have internal predecessors, (13298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:38,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9705 states to 9705 states and 13298 transitions. [2023-11-29 05:14:38,449 INFO L78 Accepts]: Start accepts. Automaton has 9705 states and 13298 transitions. Word has length 97 [2023-11-29 05:14:38,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:38,449 INFO L495 AbstractCegarLoop]: Abstraction has 9705 states and 13298 transitions. [2023-11-29 05:14:38,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:38,449 INFO L276 IsEmpty]: Start isEmpty. Operand 9705 states and 13298 transitions. [2023-11-29 05:14:38,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 05:14:38,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:38,450 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:38,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:14:38,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 05:14:38,651 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:38,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:38,651 INFO L85 PathProgramCache]: Analyzing trace with hash 806498379, now seen corresponding path program 1 times [2023-11-29 05:14:38,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:38,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498761030] [2023-11-29 05:14:38,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:38,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:40,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:40,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498761030] [2023-11-29 05:14:40,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498761030] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:14:40,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005107598] [2023-11-29 05:14:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:40,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:40,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:40,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:40,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:14:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:40,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:14:40,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:40,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:14:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:42,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005107598] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:14:42,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:14:42,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2023-11-29 05:14:42,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587974378] [2023-11-29 05:14:42,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:14:42,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 05:14:42,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 05:14:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2023-11-29 05:14:42,313 INFO L87 Difference]: Start difference. First operand 9705 states and 13298 transitions. Second operand has 32 states, 32 states have (on average 8.0625) internal successors, (258), 32 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:43,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:43,985 INFO L93 Difference]: Finished difference Result 27245 states and 36241 transitions. [2023-11-29 05:14:43,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 05:14:43,986 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.0625) internal successors, (258), 32 states have internal predecessors, (258), 0 states have call successors, (0), 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 98 [2023-11-29 05:14:43,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:44,000 INFO L225 Difference]: With dead ends: 27245 [2023-11-29 05:14:44,000 INFO L226 Difference]: Without dead ends: 19484 [2023-11-29 05:14:44,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=528, Invalid=1728, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 05:14:44,005 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 11118 mSDsluCounter, 5123 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11118 SdHoareTripleChecker+Valid, 6646 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:44,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11118 Valid, 6646 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:14:44,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19484 states. [2023-11-29 05:14:44,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19484 to 18056. [2023-11-29 05:14:44,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18056 states, 18054 states have (on average 1.3306746427384513) internal successors, (24024), 18055 states have internal predecessors, (24024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:44,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18056 states to 18056 states and 24024 transitions. [2023-11-29 05:14:44,540 INFO L78 Accepts]: Start accepts. Automaton has 18056 states and 24024 transitions. Word has length 98 [2023-11-29 05:14:44,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:44,540 INFO L495 AbstractCegarLoop]: Abstraction has 18056 states and 24024 transitions. [2023-11-29 05:14:44,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.0625) internal successors, (258), 32 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:44,540 INFO L276 IsEmpty]: Start isEmpty. Operand 18056 states and 24024 transitions. [2023-11-29 05:14:44,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 05:14:44,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:44,542 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:44,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:14:44,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 05:14:44,742 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:44,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:44,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1833336139, now seen corresponding path program 1 times [2023-11-29 05:14:44,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:44,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033919795] [2023-11-29 05:14:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:44,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:45,087 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:45,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:45,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033919795] [2023-11-29 05:14:45,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033919795] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:14:45,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752914605] [2023-11-29 05:14:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:45,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:45,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:45,089 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:45,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:14:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:45,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:14:45,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:45,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:14:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:46,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752914605] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:14:46,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:14:46,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-29 05:14:46,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098607207] [2023-11-29 05:14:46,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:14:46,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 05:14:46,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:46,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 05:14:46,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2023-11-29 05:14:46,597 INFO L87 Difference]: Start difference. First operand 18056 states and 24024 transitions. Second operand has 25 states, 25 states have (on average 9.96) internal successors, (249), 24 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:50,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:50,140 INFO L93 Difference]: Finished difference Result 79166 states and 103190 transitions. [2023-11-29 05:14:50,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 05:14:50,141 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.96) internal successors, (249), 24 states have internal predecessors, (249), 0 states have call successors, (0), 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 98 [2023-11-29 05:14:50,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:50,196 INFO L225 Difference]: With dead ends: 79166 [2023-11-29 05:14:50,196 INFO L226 Difference]: Without dead ends: 62976 [2023-11-29 05:14:50,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=588, Invalid=2274, Unknown=0, NotChecked=0, Total=2862 [2023-11-29 05:14:50,209 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 20780 mSDsluCounter, 5164 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20780 SdHoareTripleChecker+Valid, 6688 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:50,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20780 Valid, 6688 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:14:50,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62976 states. [2023-11-29 05:14:52,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62976 to 59762. [2023-11-29 05:14:52,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59762 states, 59760 states have (on average 1.2863788487282464) internal successors, (76874), 59761 states have internal predecessors, (76874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59762 states to 59762 states and 76874 transitions. [2023-11-29 05:14:52,489 INFO L78 Accepts]: Start accepts. Automaton has 59762 states and 76874 transitions. Word has length 98 [2023-11-29 05:14:52,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:52,489 INFO L495 AbstractCegarLoop]: Abstraction has 59762 states and 76874 transitions. [2023-11-29 05:14:52,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.96) internal successors, (249), 24 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:14:52,489 INFO L276 IsEmpty]: Start isEmpty. Operand 59762 states and 76874 transitions. [2023-11-29 05:14:52,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 05:14:52,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:52,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:14:52,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:14:52,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 05:14:52,692 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:52,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:52,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2001529393, now seen corresponding path program 1 times [2023-11-29 05:14:52,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:52,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828406689] [2023-11-29 05:14:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:52,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:53,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:53,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828406689] [2023-11-29 05:14:53,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828406689] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:14:53,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863910696] [2023-11-29 05:14:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:53,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:53,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:53,128 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:53,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:14:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:53,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 05:14:53,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:53,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:14:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:14:54,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863910696] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:14:54,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:14:54,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-29 05:14:54,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476040948] [2023-11-29 05:14:54,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:14:54,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 05:14:54,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:54,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 05:14:54,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-11-29 05:14:54,569 INFO L87 Difference]: Start difference. First operand 59762 states and 76874 transitions. Second operand has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:15:00,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:00,955 INFO L93 Difference]: Finished difference Result 183037 states and 234101 transitions. [2023-11-29 05:15:00,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 05:15:00,955 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 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 99 [2023-11-29 05:15:00,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:01,087 INFO L225 Difference]: With dead ends: 183037 [2023-11-29 05:15:01,087 INFO L226 Difference]: Without dead ends: 127549 [2023-11-29 05:15:01,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=667, Invalid=2413, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 05:15:01,122 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 22066 mSDsluCounter, 6745 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22066 SdHoareTripleChecker+Valid, 8290 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:01,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22066 Valid, 8290 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:15:01,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127549 states. [2023-11-29 05:15:06,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127549 to 109883. [2023-11-29 05:15:06,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109883 states, 109881 states have (on average 1.2535652205567842) internal successors, (137743), 109882 states have internal predecessors, (137743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:15:06,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109883 states to 109883 states and 137743 transitions. [2023-11-29 05:15:06,337 INFO L78 Accepts]: Start accepts. Automaton has 109883 states and 137743 transitions. Word has length 99 [2023-11-29 05:15:06,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:06,338 INFO L495 AbstractCegarLoop]: Abstraction has 109883 states and 137743 transitions. [2023-11-29 05:15:06,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:15:06,338 INFO L276 IsEmpty]: Start isEmpty. Operand 109883 states and 137743 transitions. [2023-11-29 05:15:06,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 05:15:06,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:06,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:15:06,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 05:15:06,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 05:15:06,541 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:06,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:06,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1900450337, now seen corresponding path program 1 times [2023-11-29 05:15:06,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:06,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322009835] [2023-11-29 05:15:06,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:06,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:06,947 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:15:06,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:06,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322009835] [2023-11-29 05:15:06,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322009835] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:15:06,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845247027] [2023-11-29 05:15:06,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:06,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:06,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:15:06,949 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:15:06,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:15:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:07,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:15:07,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:15:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:15:08,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:15:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:15:09,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845247027] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:15:09,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:15:09,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-11-29 05:15:09,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155939954] [2023-11-29 05:15:09,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:15:09,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 05:15:09,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:09,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 05:15:09,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2023-11-29 05:15:09,262 INFO L87 Difference]: Start difference. First operand 109883 states and 137743 transitions. Second operand has 30 states, 30 states have (on average 9.666666666666666) internal successors, (290), 30 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:15:22,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:22,069 INFO L93 Difference]: Finished difference Result 336197 states and 415760 transitions. [2023-11-29 05:15:22,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 05:15:22,070 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.666666666666666) internal successors, (290), 30 states have internal predecessors, (290), 0 states have call successors, (0), 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 101 [2023-11-29 05:15:22,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:22,340 INFO L225 Difference]: With dead ends: 336197 [2023-11-29 05:15:22,340 INFO L226 Difference]: Without dead ends: 240578 [2023-11-29 05:15:22,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1408 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1110, Invalid=4742, Unknown=0, NotChecked=0, Total=5852 [2023-11-29 05:15:22,380 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 12100 mSDsluCounter, 15857 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12100 SdHoareTripleChecker+Valid, 17396 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:22,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12100 Valid, 17396 Invalid, 1639 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 05:15:22,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240578 states. [2023-11-29 05:15:32,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240578 to 205202. [2023-11-29 05:15:32,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205202 states, 205200 states have (on average 1.2361403508771929) internal successors, (253656), 205201 states have internal predecessors, (253656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:15:32,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205202 states to 205202 states and 253656 transitions. [2023-11-29 05:15:32,977 INFO L78 Accepts]: Start accepts. Automaton has 205202 states and 253656 transitions. Word has length 101 [2023-11-29 05:15:32,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:32,978 INFO L495 AbstractCegarLoop]: Abstraction has 205202 states and 253656 transitions. [2023-11-29 05:15:32,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.666666666666666) internal successors, (290), 30 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:15:32,978 INFO L276 IsEmpty]: Start isEmpty. Operand 205202 states and 253656 transitions. [2023-11-29 05:15:32,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 05:15:32,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:32,982 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:15:32,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:15:33,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:33,183 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:33,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:33,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1425391795, now seen corresponding path program 1 times [2023-11-29 05:15:33,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:33,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422895768] [2023-11-29 05:15:33,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:33,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:15:34,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:34,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422895768] [2023-11-29 05:15:34,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422895768] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:15:34,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209873954] [2023-11-29 05:15:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:34,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:34,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:15:34,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:15:34,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a34c7eca-fa6a-4d18-a2c8-d64c9ddb4190/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:15:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:34,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-29 05:15:34,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:16:23,269 WARN L293 SmtUtils]: Spent 9.22s on a formula simplification. DAG size of input: 121 DAG size of output: 98 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-11-29 05:16:50,814 WARN L293 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 94 DAG size of output: 78 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-11-29 05:17:21,695 WARN L293 SmtUtils]: Spent 12.02s on a formula simplification. DAG size of input: 121 DAG size of output: 98 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-11-29 05:17:38,678 WARN L293 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 87 DAG size of output: 45 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-11-29 05:17:49,321 WARN L293 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 129 DAG size of output: 77 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-11-29 05:18:19,487 WARN L293 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 94 DAG size of output: 77 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-11-29 05:20:03,168 WARN L293 SmtUtils]: Spent 59.88s on a formula simplification. DAG size of input: 477 DAG size of output: 295 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:20:57,501 WARN L293 SmtUtils]: Spent 17.84s on a formula simplification that was a NOOP. DAG size: 295 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:26:11,499 WARN L293 SmtUtils]: Spent 17.60s on a formula simplification that was a NOOP. DAG size: 295 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:27:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:27:14,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:27:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:27:34,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209873954] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:27:34,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:27:34,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 34, 38] total 80 [2023-11-29 05:27:34,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773099111] [2023-11-29 05:27:34,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:27:34,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-11-29 05:27:34,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:27:34,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-11-29 05:27:34,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=762, Invalid=5558, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 05:27:34,088 INFO L87 Difference]: Start difference. First operand 205202 states and 253656 transitions. Second operand has 80 states, 80 states have (on average 3.4625) internal successors, (277), 80 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)