./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5_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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/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_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/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_0c77bf04-6be3-426e-8e06-32ad0e659d8d/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 24a2674686e3cd976907355f3a5c851b85884bd28355ffc3fa271cccc21387fd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:49:25,965 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:49:26,029 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:49:26,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:49:26,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:49:26,060 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:49:26,061 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:49:26,062 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:49:26,062 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:49:26,063 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:49:26,063 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:49:26,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:49:26,065 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:49:26,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:49:26,066 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:49:26,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:49:26,067 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:49:26,067 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:49:26,068 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:49:26,068 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:49:26,069 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:49:26,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:49:26,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:49:26,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:49:26,074 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:49:26,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:49:26,075 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:49:26,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:49:26,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:49:26,076 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:49:26,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:49:26,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:49:26,077 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:49:26,077 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:49:26,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:49:26,077 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:49:26,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:49:26,078 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:49:26,078 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:49:26,078 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:49:26,078 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:49:26,079 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:49:26,079 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_0c77bf04-6be3-426e-8e06-32ad0e659d8d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24a2674686e3cd976907355f3a5c851b85884bd28355ffc3fa271cccc21387fd [2023-11-29 04:49:26,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:49:26,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:49:26,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:49:26,338 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:49:26,339 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:49:26,340 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-29 04:49:29,058 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:49:29,496 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:49:29,497 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-29 04:49:29,526 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/data/b5b51dafa/d946930b6b0348a691b1c16f4bf76e69/FLAGa9ae2a2fd [2023-11-29 04:49:29,540 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/data/b5b51dafa/d946930b6b0348a691b1c16f4bf76e69 [2023-11-29 04:49:29,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:49:29,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:49:29,545 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:49:29,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:49:29,550 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:49:29,551 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:49:29" (1/1) ... [2023-11-29 04:49:29,552 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6278a10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:29, skipping insertion in model container [2023-11-29 04:49:29,552 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:49:29" (1/1) ... [2023-11-29 04:49:29,682 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:49:30,024 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_0c77bf04-6be3-426e-8e06-32ad0e659d8d/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[11742,11755] [2023-11-29 04:49:30,083 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_0c77bf04-6be3-426e-8e06-32ad0e659d8d/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[17297,17310] [2023-11-29 04:49:30,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:49:30,748 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:49:30,777 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_0c77bf04-6be3-426e-8e06-32ad0e659d8d/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[11742,11755] [2023-11-29 04:49:30,786 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_0c77bf04-6be3-426e-8e06-32ad0e659d8d/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[17297,17310] [2023-11-29 04:49:31,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:49:31,201 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:49:31,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:31 WrapperNode [2023-11-29 04:49:31,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:49:31,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:49:31,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:49:31,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:49:31,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:31" (1/1) ... [2023-11-29 04:49:31,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:31" (1/1) ... [2023-11-29 04:49:31,539 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5089 [2023-11-29 04:49:31,540 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:49:31,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:49:31,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:49:31,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:49:31,552 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:31" (1/1) ... [2023-11-29 04:49:31,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:31" (1/1) ... [2023-11-29 04:49:31,590 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:31" (1/1) ... [2023-11-29 04:49:31,724 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 04:49:31,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:31" (1/1) ... [2023-11-29 04:49:31,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:31" (1/1) ... [2023-11-29 04:49:31,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:31" (1/1) ... [2023-11-29 04:49:31,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:31" (1/1) ... [2023-11-29 04:49:31,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:31" (1/1) ... [2023-11-29 04:49:31,892 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:31" (1/1) ... [2023-11-29 04:49:31,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:49:31,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:49:31,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:49:31,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:49:31,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:31" (1/1) ... [2023-11-29 04:49:31,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:49:31,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:31,967 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:49:31,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:49:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:49:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:49:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:49:32,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:49:32,099 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:49:32,101 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:49:36,803 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:49:36,874 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:49:36,874 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 04:49:36,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:49:36 BoogieIcfgContainer [2023-11-29 04:49:36,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:49:36,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:49:36,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:49:36,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:49:36,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:49:29" (1/3) ... [2023-11-29 04:49:36,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66091445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:49:36, skipping insertion in model container [2023-11-29 04:49:36,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:31" (2/3) ... [2023-11-29 04:49:36,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66091445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:49:36, skipping insertion in model container [2023-11-29 04:49:36,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:49:36" (3/3) ... [2023-11-29 04:49:36,885 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-29 04:49:36,904 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:49:36,905 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 04:49:36,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:49:36,986 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;@55fe1c07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:49:36,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 04:49:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 04:49:37,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:37,006 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] [2023-11-29 04:49:37,006 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:37,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:37,011 INFO L85 PathProgramCache]: Analyzing trace with hash -606284215, now seen corresponding path program 1 times [2023-11-29 04:49:37,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:37,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646108710] [2023-11-29 04:49:37,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:37,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:37,237 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 04:49:37,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:37,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646108710] [2023-11-29 04:49:37,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646108710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:37,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:37,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:49:37,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600922554] [2023-11-29 04:49:37,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:37,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:49:37,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:37,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:49:37,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:49:37,280 INFO L87 Difference]: Start difference. First operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:37,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:37,365 INFO L93 Difference]: Finished difference Result 1632 states and 3215 transitions. [2023-11-29 04:49:37,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:49:37,367 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-11-29 04:49:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:37,385 INFO L225 Difference]: With dead ends: 1632 [2023-11-29 04:49:37,385 INFO L226 Difference]: Without dead ends: 830 [2023-11-29 04:49:37,391 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 04:49:37,394 INFO L413 NwaCegarLoop]: 1570 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, 1570 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 04:49:37,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1570 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:37,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-11-29 04:49:37,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-11-29 04:49:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8973429951690821) internal successors, (1571), 829 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:37,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1571 transitions. [2023-11-29 04:49:37,470 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1571 transitions. Word has length 21 [2023-11-29 04:49:37,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:37,470 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1571 transitions. [2023-11-29 04:49:37,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1571 transitions. [2023-11-29 04:49:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 04:49:37,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:37,472 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] [2023-11-29 04:49:37,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:49:37,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:37,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:37,473 INFO L85 PathProgramCache]: Analyzing trace with hash 2100335179, now seen corresponding path program 1 times [2023-11-29 04:49:37,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:37,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368343359] [2023-11-29 04:49:37,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:37,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:37,751 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 04:49:37,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:37,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368343359] [2023-11-29 04:49:37,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368343359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:37,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:37,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:49:37,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917595341] [2023-11-29 04:49:37,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:37,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:49:37,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:37,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:49:37,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:49:37,756 INFO L87 Difference]: Start difference. First operand 830 states and 1571 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:37,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:37,842 INFO L93 Difference]: Finished difference Result 874 states and 1640 transitions. [2023-11-29 04:49:37,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:49:37,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-11-29 04:49:37,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:37,847 INFO L225 Difference]: With dead ends: 874 [2023-11-29 04:49:37,848 INFO L226 Difference]: Without dead ends: 830 [2023-11-29 04:49:37,849 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 04:49:37,850 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 0 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:37,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4669 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:37,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-11-29 04:49:37,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-11-29 04:49:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8599033816425121) internal successors, (1540), 829 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1540 transitions. [2023-11-29 04:49:37,873 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1540 transitions. Word has length 21 [2023-11-29 04:49:37,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:37,873 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1540 transitions. [2023-11-29 04:49:37,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:37,874 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1540 transitions. [2023-11-29 04:49:37,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 04:49:37,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:37,876 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 04:49:37,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:49:37,876 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:37,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:37,877 INFO L85 PathProgramCache]: Analyzing trace with hash -364061020, now seen corresponding path program 1 times [2023-11-29 04:49:37,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:37,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95452575] [2023-11-29 04:49:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:37,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:37,962 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 04:49:37,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:37,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95452575] [2023-11-29 04:49:37,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95452575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:37,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:37,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:49:37,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263817473] [2023-11-29 04:49:37,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:37,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:37,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:37,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:37,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:37,965 INFO L87 Difference]: Start difference. First operand 830 states and 1540 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 04:49:41,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:41,696 INFO L93 Difference]: Finished difference Result 2334 states and 4413 transitions. [2023-11-29 04:49:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:41,696 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 04:49:41,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:41,707 INFO L225 Difference]: With dead ends: 2334 [2023-11-29 04:49:41,707 INFO L226 Difference]: Without dead ends: 1581 [2023-11-29 04:49:41,709 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 04:49:41,710 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 869 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:41,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 175 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 04:49:41,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-11-29 04:49:41,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2023-11-29 04:49:41,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1579 states have (on average 1.8461051298290057) internal successors, (2915), 1580 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:41,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2915 transitions. [2023-11-29 04:49:41,759 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2915 transitions. Word has length 47 [2023-11-29 04:49:41,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:41,760 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2915 transitions. [2023-11-29 04:49:41,760 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 04:49:41,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2915 transitions. [2023-11-29 04:49:41,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 04:49:41,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:41,763 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] [2023-11-29 04:49:41,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:49:41,763 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:41,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:41,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1048618978, now seen corresponding path program 1 times [2023-11-29 04:49:41,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:41,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270021526] [2023-11-29 04:49:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:41,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:41,915 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 04:49:41,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:41,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270021526] [2023-11-29 04:49:41,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270021526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:41,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:41,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:49:41,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886290106] [2023-11-29 04:49:41,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:41,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:49:41,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:41,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:49:41,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:49:41,918 INFO L87 Difference]: Start difference. First operand 1581 states and 2915 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:42,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:42,217 INFO L93 Difference]: Finished difference Result 1991 states and 3575 transitions. [2023-11-29 04:49:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:49:42,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-11-29 04:49:42,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:42,230 INFO L225 Difference]: With dead ends: 1991 [2023-11-29 04:49:42,231 INFO L226 Difference]: Without dead ends: 1950 [2023-11-29 04:49:42,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:49:42,233 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7933 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7933 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:42,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7933 Valid, 2700 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:49:42,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2023-11-29 04:49:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1620. [2023-11-29 04:49:42,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1618 states have (on average 1.8405438813349815) internal successors, (2978), 1619 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2978 transitions. [2023-11-29 04:49:42,286 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2978 transitions. Word has length 51 [2023-11-29 04:49:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:42,287 INFO L495 AbstractCegarLoop]: Abstraction has 1620 states and 2978 transitions. [2023-11-29 04:49:42,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:42,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2978 transitions. [2023-11-29 04:49:42,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 04:49:42,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:42,289 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] [2023-11-29 04:49:42,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:49:42,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:42,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:42,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1740226510, now seen corresponding path program 1 times [2023-11-29 04:49:42,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:42,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349462958] [2023-11-29 04:49:42,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:42,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:42,367 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 04:49:42,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:42,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349462958] [2023-11-29 04:49:42,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349462958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:42,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:42,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:42,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630405692] [2023-11-29 04:49:42,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:42,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:42,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:42,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:42,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:42,370 INFO L87 Difference]: Start difference. First operand 1620 states and 2978 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:42,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:42,421 INFO L93 Difference]: Finished difference Result 1769 states and 3217 transitions. [2023-11-29 04:49:42,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:42,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-29 04:49:42,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:42,432 INFO L225 Difference]: With dead ends: 1769 [2023-11-29 04:49:42,432 INFO L226 Difference]: Without dead ends: 1689 [2023-11-29 04:49:42,433 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 04:49:42,434 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1480 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1595 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 04:49:42,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1595 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:42,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2023-11-29 04:49:42,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1687. [2023-11-29 04:49:42,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1685 states have (on average 1.83026706231454) internal successors, (3084), 1686 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:42,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3084 transitions. [2023-11-29 04:49:42,486 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3084 transitions. Word has length 53 [2023-11-29 04:49:42,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:42,487 INFO L495 AbstractCegarLoop]: Abstraction has 1687 states and 3084 transitions. [2023-11-29 04:49:42,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:42,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3084 transitions. [2023-11-29 04:49:42,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 04:49:42,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:42,488 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] [2023-11-29 04:49:42,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:49:42,489 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:42,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:42,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1738081558, now seen corresponding path program 1 times [2023-11-29 04:49:42,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:42,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698711553] [2023-11-29 04:49:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:42,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:42,739 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 04:49:42,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:42,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698711553] [2023-11-29 04:49:42,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698711553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:42,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:42,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:49:42,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904738408] [2023-11-29 04:49:42,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:42,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:49:42,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:42,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:49:42,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:49:42,742 INFO L87 Difference]: Start difference. First operand 1687 states and 3084 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:42,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:42,952 INFO L93 Difference]: Finished difference Result 1836 states and 3320 transitions. [2023-11-29 04:49:42,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:49:42,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-29 04:49:42,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:42,964 INFO L225 Difference]: With dead ends: 1836 [2023-11-29 04:49:42,964 INFO L226 Difference]: Without dead ends: 1689 [2023-11-29 04:49:42,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:49:42,966 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 4473 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4473 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:42,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4473 Valid, 1778 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:49:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2023-11-29 04:49:43,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1687. [2023-11-29 04:49:43,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1685 states have (on average 1.829080118694362) internal successors, (3082), 1686 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3082 transitions. [2023-11-29 04:49:43,021 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3082 transitions. Word has length 53 [2023-11-29 04:49:43,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:43,022 INFO L495 AbstractCegarLoop]: Abstraction has 1687 states and 3082 transitions. [2023-11-29 04:49:43,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:43,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3082 transitions. [2023-11-29 04:49:43,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 04:49:43,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:43,023 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] [2023-11-29 04:49:43,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:49:43,023 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:43,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:43,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1824971111, now seen corresponding path program 1 times [2023-11-29 04:49:43,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:43,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243797254] [2023-11-29 04:49:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:43,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:43,202 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 04:49:43,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:43,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243797254] [2023-11-29 04:49:43,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243797254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:43,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:43,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:49:43,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493195308] [2023-11-29 04:49:43,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:43,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:49:43,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:43,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:49:43,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:49:43,205 INFO L87 Difference]: Start difference. First operand 1687 states and 3082 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:43,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:43,262 INFO L93 Difference]: Finished difference Result 1695 states and 3091 transitions. [2023-11-29 04:49:43,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:49:43,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-29 04:49:43,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:43,273 INFO L225 Difference]: With dead ends: 1695 [2023-11-29 04:49:43,274 INFO L226 Difference]: Without dead ends: 1693 [2023-11-29 04:49:43,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:49:43,275 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4600 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 04:49:43,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4600 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:43,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2023-11-29 04:49:43,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1691. [2023-11-29 04:49:43,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1689 states have (on average 1.8265245707519242) internal successors, (3085), 1690 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:43,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 3085 transitions. [2023-11-29 04:49:43,322 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 3085 transitions. Word has length 54 [2023-11-29 04:49:43,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:43,322 INFO L495 AbstractCegarLoop]: Abstraction has 1691 states and 3085 transitions. [2023-11-29 04:49:43,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:43,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 3085 transitions. [2023-11-29 04:49:43,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 04:49:43,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:43,324 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] [2023-11-29 04:49:43,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:49:43,325 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:43,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:43,325 INFO L85 PathProgramCache]: Analyzing trace with hash -333952342, now seen corresponding path program 1 times [2023-11-29 04:49:43,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:43,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369626531] [2023-11-29 04:49:43,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:43,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:43,409 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 04:49:43,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:43,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369626531] [2023-11-29 04:49:43,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369626531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:43,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:43,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:43,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118137868] [2023-11-29 04:49:43,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:43,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:43,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:43,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:43,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:43,411 INFO L87 Difference]: Start difference. First operand 1691 states and 3085 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:43,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:43,455 INFO L93 Difference]: Finished difference Result 1853 states and 3338 transitions. [2023-11-29 04:49:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:43,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 04:49:43,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:43,466 INFO L225 Difference]: With dead ends: 1853 [2023-11-29 04:49:43,466 INFO L226 Difference]: Without dead ends: 1769 [2023-11-29 04:49:43,467 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 04:49:43,467 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1653 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 04:49:43,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:43,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2023-11-29 04:49:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1767. [2023-11-29 04:49:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1765 states have (on average 1.8141643059490085) internal successors, (3202), 1766 states have internal predecessors, (3202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 3202 transitions. [2023-11-29 04:49:43,518 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 3202 transitions. Word has length 55 [2023-11-29 04:49:43,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:43,519 INFO L495 AbstractCegarLoop]: Abstraction has 1767 states and 3202 transitions. [2023-11-29 04:49:43,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 3202 transitions. [2023-11-29 04:49:43,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 04:49:43,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:43,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:43,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:49:43,521 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:43,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:43,521 INFO L85 PathProgramCache]: Analyzing trace with hash -562591574, now seen corresponding path program 1 times [2023-11-29 04:49:43,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:43,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356248504] [2023-11-29 04:49:43,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:43,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:43,576 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 04:49:43,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:43,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356248504] [2023-11-29 04:49:43,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356248504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:43,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:43,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:43,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418638306] [2023-11-29 04:49:43,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:43,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:43,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:43,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:43,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:43,578 INFO L87 Difference]: Start difference. First operand 1767 states and 3202 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:43,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:43,628 INFO L93 Difference]: Finished difference Result 2193 states and 3862 transitions. [2023-11-29 04:49:43,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:43,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 04:49:43,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:43,641 INFO L225 Difference]: With dead ends: 2193 [2023-11-29 04:49:43,641 INFO L226 Difference]: Without dead ends: 1968 [2023-11-29 04:49:43,642 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 04:49:43,643 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1490 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1653 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 04:49:43,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:43,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2023-11-29 04:49:43,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1966. [2023-11-29 04:49:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1964 states have (on average 1.7841140529531567) internal successors, (3504), 1965 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:43,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 3504 transitions. [2023-11-29 04:49:43,700 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 3504 transitions. Word has length 55 [2023-11-29 04:49:43,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:43,700 INFO L495 AbstractCegarLoop]: Abstraction has 1966 states and 3504 transitions. [2023-11-29 04:49:43,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:43,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 3504 transitions. [2023-11-29 04:49:43,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 04:49:43,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:43,702 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] [2023-11-29 04:49:43,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:49:43,702 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:43,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:43,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1188247638, now seen corresponding path program 1 times [2023-11-29 04:49:43,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:43,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940314920] [2023-11-29 04:49:43,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:43,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:43,753 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 04:49:43,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:43,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940314920] [2023-11-29 04:49:43,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940314920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:43,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:43,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:43,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761894710] [2023-11-29 04:49:43,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:43,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:43,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:43,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:43,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:43,755 INFO L87 Difference]: Start difference. First operand 1966 states and 3504 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:43,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:43,814 INFO L93 Difference]: Finished difference Result 2766 states and 4726 transitions. [2023-11-29 04:49:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:43,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 04:49:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:43,829 INFO L225 Difference]: With dead ends: 2766 [2023-11-29 04:49:43,829 INFO L226 Difference]: Without dead ends: 2342 [2023-11-29 04:49:43,830 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 04:49:43,831 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1488 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1655 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 04:49:43,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1655 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:43,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2023-11-29 04:49:43,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2340. [2023-11-29 04:49:43,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2340 states, 2338 states have (on average 1.7365269461077844) internal successors, (4060), 2339 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 4060 transitions. [2023-11-29 04:49:43,904 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 4060 transitions. Word has length 55 [2023-11-29 04:49:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:43,905 INFO L495 AbstractCegarLoop]: Abstraction has 2340 states and 4060 transitions. [2023-11-29 04:49:43,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 4060 transitions. [2023-11-29 04:49:43,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 04:49:43,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:43,906 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] [2023-11-29 04:49:43,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:49:43,906 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:43,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash -299514198, now seen corresponding path program 1 times [2023-11-29 04:49:43,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:43,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412104254] [2023-11-29 04:49:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:43,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:43,960 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 04:49:43,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:43,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412104254] [2023-11-29 04:49:43,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412104254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:43,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:43,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:43,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691589562] [2023-11-29 04:49:43,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:43,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:43,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:43,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:43,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:43,963 INFO L87 Difference]: Start difference. First operand 2340 states and 4060 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:44,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:44,040 INFO L93 Difference]: Finished difference Result 3840 states and 6310 transitions. [2023-11-29 04:49:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:44,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 04:49:44,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:44,058 INFO L225 Difference]: With dead ends: 3840 [2023-11-29 04:49:44,058 INFO L226 Difference]: Without dead ends: 3042 [2023-11-29 04:49:44,060 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 04:49:44,061 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1486 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1657 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 04:49:44,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1657 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:44,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2023-11-29 04:49:44,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3040. [2023-11-29 04:49:44,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3040 states, 3038 states have (on average 1.6708360763660304) internal successors, (5076), 3039 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:44,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 5076 transitions. [2023-11-29 04:49:44,166 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 5076 transitions. Word has length 55 [2023-11-29 04:49:44,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:44,166 INFO L495 AbstractCegarLoop]: Abstraction has 3040 states and 5076 transitions. [2023-11-29 04:49:44,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:44,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 5076 transitions. [2023-11-29 04:49:44,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 04:49:44,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:44,167 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] [2023-11-29 04:49:44,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:49:44,168 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:44,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:44,168 INFO L85 PathProgramCache]: Analyzing trace with hash -602535510, now seen corresponding path program 1 times [2023-11-29 04:49:44,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:44,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101092990] [2023-11-29 04:49:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:44,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:44,218 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 04:49:44,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:44,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101092990] [2023-11-29 04:49:44,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101092990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:44,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:44,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:44,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224051996] [2023-11-29 04:49:44,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:44,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:44,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:44,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:44,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:44,220 INFO L87 Difference]: Start difference. First operand 3040 states and 5076 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:44,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:44,367 INFO L93 Difference]: Finished difference Result 5844 states and 9190 transitions. [2023-11-29 04:49:44,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:44,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 04:49:44,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:44,393 INFO L225 Difference]: With dead ends: 5844 [2023-11-29 04:49:44,394 INFO L226 Difference]: Without dead ends: 4346 [2023-11-29 04:49:44,396 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 04:49:44,397 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1492 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1659 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 04:49:44,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:44,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4346 states. [2023-11-29 04:49:44,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4346 to 4344. [2023-11-29 04:49:44,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4342 states have (on average 1.592814371257485) internal successors, (6916), 4343 states have internal predecessors, (6916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 6916 transitions. [2023-11-29 04:49:44,609 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 6916 transitions. Word has length 55 [2023-11-29 04:49:44,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:44,610 INFO L495 AbstractCegarLoop]: Abstraction has 4344 states and 6916 transitions. [2023-11-29 04:49:44,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:44,610 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 6916 transitions. [2023-11-29 04:49:44,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 04:49:44,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:44,613 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] [2023-11-29 04:49:44,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:49:44,613 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:44,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:44,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1175701837, now seen corresponding path program 1 times [2023-11-29 04:49:44,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:44,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971765990] [2023-11-29 04:49:44,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:44,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:49:44,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:44,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971765990] [2023-11-29 04:49:44,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971765990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:44,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:44,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:49:44,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399284305] [2023-11-29 04:49:44,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:44,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:49:44,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:44,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:49:44,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:49:44,820 INFO L87 Difference]: Start difference. First operand 4344 states and 6916 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:45,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:45,392 INFO L93 Difference]: Finished difference Result 18132 states and 26906 transitions. [2023-11-29 04:49:45,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:49:45,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 73 [2023-11-29 04:49:45,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:45,428 INFO L225 Difference]: With dead ends: 18132 [2023-11-29 04:49:45,429 INFO L226 Difference]: Without dead ends: 16146 [2023-11-29 04:49:45,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:49:45,436 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6291 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6291 SdHoareTripleChecker+Valid, 3561 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:45,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6291 Valid, 3561 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:49:45,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16146 states. [2023-11-29 04:49:45,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16146 to 6744. [2023-11-29 04:49:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6744 states, 6742 states have (on average 1.5360427172945714) internal successors, (10356), 6743 states have internal predecessors, (10356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:45,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 10356 transitions. [2023-11-29 04:49:45,818 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 10356 transitions. Word has length 73 [2023-11-29 04:49:45,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:45,819 INFO L495 AbstractCegarLoop]: Abstraction has 6744 states and 10356 transitions. [2023-11-29 04:49:45,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:45,820 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 10356 transitions. [2023-11-29 04:49:45,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 04:49:45,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:45,822 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] [2023-11-29 04:49:45,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 04:49:45,823 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:45,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:45,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1404341069, now seen corresponding path program 1 times [2023-11-29 04:49:45,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:45,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332556417] [2023-11-29 04:49:45,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:45,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:49:45,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:45,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332556417] [2023-11-29 04:49:45,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332556417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:45,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:45,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:49:45,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675984456] [2023-11-29 04:49:45,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:45,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:49:45,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:45,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:49:45,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:49:45,990 INFO L87 Difference]: Start difference. First operand 6744 states and 10356 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:46,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:46,654 INFO L93 Difference]: Finished difference Result 20932 states and 30938 transitions. [2023-11-29 04:49:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:49:46,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-11-29 04:49:46,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:46,693 INFO L225 Difference]: With dead ends: 20932 [2023-11-29 04:49:46,693 INFO L226 Difference]: Without dead ends: 18130 [2023-11-29 04:49:46,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:49:46,700 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6336 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6336 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:46,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6336 Valid, 3592 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:49:46,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18130 states. [2023-11-29 04:49:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18130 to 10536. [2023-11-29 04:49:47,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10536 states, 10534 states have (on average 1.49800645528764) internal successors, (15780), 10535 states have internal predecessors, (15780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10536 states to 10536 states and 15780 transitions. [2023-11-29 04:49:47,141 INFO L78 Accepts]: Start accepts. Automaton has 10536 states and 15780 transitions. Word has length 73 [2023-11-29 04:49:47,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:47,141 INFO L495 AbstractCegarLoop]: Abstraction has 10536 states and 15780 transitions. [2023-11-29 04:49:47,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:47,141 INFO L276 IsEmpty]: Start isEmpty. Operand 10536 states and 15780 transitions. [2023-11-29 04:49:47,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 04:49:47,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:47,144 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] [2023-11-29 04:49:47,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 04:49:47,144 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:47,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:47,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2029997133, now seen corresponding path program 1 times [2023-11-29 04:49:47,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:47,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929866275] [2023-11-29 04:49:47,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:47,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 04:49:47,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:47,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929866275] [2023-11-29 04:49:47,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929866275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:47,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:47,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:49:47,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029315254] [2023-11-29 04:49:47,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:47,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:49:47,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:47,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:49:47,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:49:47,336 INFO L87 Difference]: Start difference. First operand 10536 states and 15780 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 04:49:47,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:47,921 INFO L93 Difference]: Finished difference Result 23732 states and 34954 transitions. [2023-11-29 04:49:47,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:49:47,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 73 [2023-11-29 04:49:47,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:47,962 INFO L225 Difference]: With dead ends: 23732 [2023-11-29 04:49:47,963 INFO L226 Difference]: Without dead ends: 20930 [2023-11-29 04:49:47,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:49:47,973 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6381 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6381 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:47,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6381 Valid, 3555 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:49:47,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20930 states. [2023-11-29 04:49:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20930 to 13336. [2023-11-29 04:49:48,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13336 states, 13334 states have (on average 1.4846257687115645) internal successors, (19796), 13335 states have internal predecessors, (19796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:48,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13336 states to 13336 states and 19796 transitions. [2023-11-29 04:49:48,483 INFO L78 Accepts]: Start accepts. Automaton has 13336 states and 19796 transitions. Word has length 73 [2023-11-29 04:49:48,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:48,484 INFO L495 AbstractCegarLoop]: Abstraction has 13336 states and 19796 transitions. [2023-11-29 04:49:48,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 04:49:48,484 INFO L276 IsEmpty]: Start isEmpty. Operand 13336 states and 19796 transitions. [2023-11-29 04:49:48,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 04:49:48,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:48,487 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] [2023-11-29 04:49:48,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 04:49:48,487 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:48,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:48,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1141263693, now seen corresponding path program 1 times [2023-11-29 04:49:48,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:48,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554280451] [2023-11-29 04:49:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:48,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:49:48,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:48,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554280451] [2023-11-29 04:49:48,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554280451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:48,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:48,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:49:48,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145866196] [2023-11-29 04:49:48,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:48,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:49:48,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:48,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:49:48,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:49:48,611 INFO L87 Difference]: Start difference. First operand 13336 states and 19796 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 04:49:49,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:49,287 INFO L93 Difference]: Finished difference Result 26532 states and 38970 transitions. [2023-11-29 04:49:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:49:49,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 73 [2023-11-29 04:49:49,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:49,323 INFO L225 Difference]: With dead ends: 26532 [2023-11-29 04:49:49,323 INFO L226 Difference]: Without dead ends: 23730 [2023-11-29 04:49:49,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:49:49,334 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6341 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6341 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:49,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6341 Valid, 3577 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:49:49,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23730 states. [2023-11-29 04:49:49,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23730 to 16136. [2023-11-29 04:49:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16136 states, 16134 states have (on average 1.4758894260567745) internal successors, (23812), 16135 states have internal predecessors, (23812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16136 states to 16136 states and 23812 transitions. [2023-11-29 04:49:49,890 INFO L78 Accepts]: Start accepts. Automaton has 16136 states and 23812 transitions. Word has length 73 [2023-11-29 04:49:49,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:49,890 INFO L495 AbstractCegarLoop]: Abstraction has 16136 states and 23812 transitions. [2023-11-29 04:49:49,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 04:49:49,890 INFO L276 IsEmpty]: Start isEmpty. Operand 16136 states and 23812 transitions. [2023-11-29 04:49:49,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 04:49:49,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:49,892 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] [2023-11-29 04:49:49,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 04:49:49,893 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:49,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:49,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1444285005, now seen corresponding path program 1 times [2023-11-29 04:49:49,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:49,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655869237] [2023-11-29 04:49:49,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:49,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:49:50,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:50,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655869237] [2023-11-29 04:49:50,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655869237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:50,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:50,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:49:50,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647842498] [2023-11-29 04:49:50,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:50,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:49:50,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:50,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:49:50,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:49:50,056 INFO L87 Difference]: Start difference. First operand 16136 states and 23812 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:50,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:50,751 INFO L93 Difference]: Finished difference Result 29332 states and 42986 transitions. [2023-11-29 04:49:50,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:49:50,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 73 [2023-11-29 04:49:50,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:50,771 INFO L225 Difference]: With dead ends: 29332 [2023-11-29 04:49:50,771 INFO L226 Difference]: Without dead ends: 26530 [2023-11-29 04:49:50,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:49:50,779 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 6295 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6295 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:50,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6295 Valid, 3651 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:49:50,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26530 states. [2023-11-29 04:49:51,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26530 to 18936. [2023-11-29 04:49:51,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.469736981092215) internal successors, (27828), 18935 states have internal predecessors, (27828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27828 transitions. [2023-11-29 04:49:51,465 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27828 transitions. Word has length 73 [2023-11-29 04:49:51,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:51,465 INFO L495 AbstractCegarLoop]: Abstraction has 18936 states and 27828 transitions. [2023-11-29 04:49:51,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27828 transitions. [2023-11-29 04:49:51,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 04:49:51,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:51,468 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] [2023-11-29 04:49:51,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 04:49:51,468 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:51,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:51,469 INFO L85 PathProgramCache]: Analyzing trace with hash -923035475, now seen corresponding path program 1 times [2023-11-29 04:49:51,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:51,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727355151] [2023-11-29 04:49:51,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:51,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:51,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:51,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727355151] [2023-11-29 04:49:51,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727355151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:51,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:51,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:51,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221844793] [2023-11-29 04:49:51,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:51,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:51,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:51,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:51,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:51,546 INFO L87 Difference]: Start difference. First operand 18936 states and 27828 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:51,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:51,991 INFO L93 Difference]: Finished difference Result 36332 states and 52806 transitions. [2023-11-29 04:49:51,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:51,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-29 04:49:51,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:52,010 INFO L225 Difference]: With dead ends: 36332 [2023-11-29 04:49:52,010 INFO L226 Difference]: Without dead ends: 18938 [2023-11-29 04:49:52,022 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 04:49:52,023 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 45 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3097 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 04:49:52,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3097 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:52,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18938 states. [2023-11-29 04:49:52,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18938 to 18936. [2023-11-29 04:49:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.4541037287419456) internal successors, (27532), 18935 states have internal predecessors, (27532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:52,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27532 transitions. [2023-11-29 04:49:52,552 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27532 transitions. Word has length 74 [2023-11-29 04:49:52,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:52,553 INFO L495 AbstractCegarLoop]: Abstraction has 18936 states and 27532 transitions. [2023-11-29 04:49:52,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:52,553 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27532 transitions. [2023-11-29 04:49:52,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 04:49:52,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:52,555 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] [2023-11-29 04:49:52,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 04:49:52,556 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:52,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:52,556 INFO L85 PathProgramCache]: Analyzing trace with hash -827058053, now seen corresponding path program 1 times [2023-11-29 04:49:52,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:52,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105397464] [2023-11-29 04:49:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:52,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:52,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:52,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105397464] [2023-11-29 04:49:52,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105397464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:52,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:52,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:52,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76884358] [2023-11-29 04:49:52,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:52,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:52,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:52,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:52,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:52,701 INFO L87 Difference]: Start difference. First operand 18936 states and 27532 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 04:49:52,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:52,967 INFO L93 Difference]: Finished difference Result 25406 states and 36809 transitions. [2023-11-29 04:49:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:52,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 75 [2023-11-29 04:49:52,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:52,977 INFO L225 Difference]: With dead ends: 25406 [2023-11-29 04:49:52,977 INFO L226 Difference]: Without dead ends: 8012 [2023-11-29 04:49:52,990 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 04:49:52,991 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 39 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3094 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 04:49:52,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3094 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:52,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2023-11-29 04:49:53,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 8005. [2023-11-29 04:49:53,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8005 states, 8003 states have (on average 1.5015619142821441) internal successors, (12017), 8004 states have internal predecessors, (12017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8005 states to 8005 states and 12017 transitions. [2023-11-29 04:49:53,192 INFO L78 Accepts]: Start accepts. Automaton has 8005 states and 12017 transitions. Word has length 75 [2023-11-29 04:49:53,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:53,192 INFO L495 AbstractCegarLoop]: Abstraction has 8005 states and 12017 transitions. [2023-11-29 04:49:53,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 04:49:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 8005 states and 12017 transitions. [2023-11-29 04:49:53,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 04:49:53,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:53,194 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] [2023-11-29 04:49:53,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 04:49:53,194 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:53,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:53,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2055768005, now seen corresponding path program 1 times [2023-11-29 04:49:53,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:53,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174197314] [2023-11-29 04:49:53,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:53,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:53,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:53,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174197314] [2023-11-29 04:49:53,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174197314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:53,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:53,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:53,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078740758] [2023-11-29 04:49:53,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:53,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:53,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:53,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:53,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:53,292 INFO L87 Difference]: Start difference. First operand 8005 states and 12017 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:53,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:53,432 INFO L93 Difference]: Finished difference Result 11233 states and 16595 transitions. [2023-11-29 04:49:53,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:53,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-29 04:49:53,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:53,438 INFO L225 Difference]: With dead ends: 11233 [2023-11-29 04:49:53,438 INFO L226 Difference]: Without dead ends: 4783 [2023-11-29 04:49:53,443 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 04:49:53,443 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 41 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3073 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 04:49:53,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3073 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:53,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2023-11-29 04:49:53,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4781. [2023-11-29 04:49:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4781 states, 4779 states have (on average 1.5461393596986817) internal successors, (7389), 4780 states have internal predecessors, (7389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 7389 transitions. [2023-11-29 04:49:53,544 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 7389 transitions. Word has length 76 [2023-11-29 04:49:53,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:53,545 INFO L495 AbstractCegarLoop]: Abstraction has 4781 states and 7389 transitions. [2023-11-29 04:49:53,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:53,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 7389 transitions. [2023-11-29 04:49:53,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 04:49:53,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:53,546 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] [2023-11-29 04:49:53,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 04:49:53,546 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:53,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:53,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1074221385, now seen corresponding path program 1 times [2023-11-29 04:49:53,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:53,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103392695] [2023-11-29 04:49:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:53,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:53,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:53,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103392695] [2023-11-29 04:49:53,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103392695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:53,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:53,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:53,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108237535] [2023-11-29 04:49:53,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:53,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:53,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:53,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:53,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:53,657 INFO L87 Difference]: Start difference. First operand 4781 states and 7389 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:53,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:53,742 INFO L93 Difference]: Finished difference Result 6397 states and 9653 transitions. [2023-11-29 04:49:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:53,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 04:49:53,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:53,746 INFO L225 Difference]: With dead ends: 6397 [2023-11-29 04:49:53,746 INFO L226 Difference]: Without dead ends: 3171 [2023-11-29 04:49:53,749 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 04:49:53,750 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 38 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3058 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 04:49:53,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3058 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:53,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2023-11-29 04:49:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3169. [2023-11-29 04:49:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 1.6106725607830754) internal successors, (5101), 3168 states have internal predecessors, (5101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 5101 transitions. [2023-11-29 04:49:53,820 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 5101 transitions. Word has length 78 [2023-11-29 04:49:53,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:53,820 INFO L495 AbstractCegarLoop]: Abstraction has 3169 states and 5101 transitions. [2023-11-29 04:49:53,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:53,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 5101 transitions. [2023-11-29 04:49:53,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 04:49:53,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:53,821 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] [2023-11-29 04:49:53,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 04:49:53,822 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:53,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:53,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1531444265, now seen corresponding path program 1 times [2023-11-29 04:49:53,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:53,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772886342] [2023-11-29 04:49:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:53,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:53,917 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:53,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:53,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772886342] [2023-11-29 04:49:53,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772886342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:53,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:53,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:53,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932681736] [2023-11-29 04:49:53,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:53,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:53,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:53,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:53,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:53,919 INFO L87 Difference]: Start difference. First operand 3169 states and 5101 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:53,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:53,978 INFO L93 Difference]: Finished difference Result 3979 states and 6221 transitions. [2023-11-29 04:49:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:53,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-29 04:49:53,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:53,983 INFO L225 Difference]: With dead ends: 3979 [2023-11-29 04:49:53,983 INFO L226 Difference]: Without dead ends: 2365 [2023-11-29 04:49:53,985 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 04:49:53,986 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 35 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 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 04:49:53,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:53,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2023-11-29 04:49:54,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2363. [2023-11-29 04:49:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2361 states have (on average 1.6814908936891149) internal successors, (3970), 2362 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:54,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3970 transitions. [2023-11-29 04:49:54,040 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3970 transitions. Word has length 80 [2023-11-29 04:49:54,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:54,040 INFO L495 AbstractCegarLoop]: Abstraction has 2363 states and 3970 transitions. [2023-11-29 04:49:54,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:54,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3970 transitions. [2023-11-29 04:49:54,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 04:49:54,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:54,042 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] [2023-11-29 04:49:54,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 04:49:54,042 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:54,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:54,043 INFO L85 PathProgramCache]: Analyzing trace with hash 405696485, now seen corresponding path program 1 times [2023-11-29 04:49:54,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:54,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992624133] [2023-11-29 04:49:54,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:54,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:55,135 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 04:49:55,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:55,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992624133] [2023-11-29 04:49:55,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992624133] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:49:55,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575473141] [2023-11-29 04:49:55,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:55,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:55,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:55,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:49:55,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:49:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:55,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:49:55,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:49:55,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:49:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:49:55,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575473141] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:49:55,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:49:55,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-29 04:49:55,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027023067] [2023-11-29 04:49:55,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:49:55,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 04:49:55,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:55,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 04:49:55,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:49:55,760 INFO L87 Difference]: Start difference. First operand 2363 states and 3970 transitions. Second operand has 18 states, 18 states have (on average 12.88888888888889) internal successors, (232), 18 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:58,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:58,571 INFO L93 Difference]: Finished difference Result 8864 states and 12692 transitions. [2023-11-29 04:49:58,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 04:49:58,571 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.88888888888889) internal successors, (232), 18 states have internal predecessors, (232), 0 states have call successors, (0), 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 82 [2023-11-29 04:49:58,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:58,579 INFO L225 Difference]: With dead ends: 8864 [2023-11-29 04:49:58,579 INFO L226 Difference]: Without dead ends: 8056 [2023-11-29 04:49:58,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 04:49:58,583 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 14090 mSDsluCounter, 6347 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14090 SdHoareTripleChecker+Valid, 7857 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:58,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14090 Valid, 7857 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 04:49:58,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8056 states. [2023-11-29 04:49:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8056 to 7656. [2023-11-29 04:49:58,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7656 states, 7654 states have (on average 1.420825712045989) internal successors, (10875), 7655 states have internal predecessors, (10875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:58,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7656 states to 7656 states and 10875 transitions. [2023-11-29 04:49:58,767 INFO L78 Accepts]: Start accepts. Automaton has 7656 states and 10875 transitions. Word has length 82 [2023-11-29 04:49:58,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:58,767 INFO L495 AbstractCegarLoop]: Abstraction has 7656 states and 10875 transitions. [2023-11-29 04:49:58,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.88888888888889) internal successors, (232), 18 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:58,767 INFO L276 IsEmpty]: Start isEmpty. Operand 7656 states and 10875 transitions. [2023-11-29 04:49:58,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 04:49:58,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:58,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:58,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:49:58,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:58,969 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:58,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:58,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1767932817, now seen corresponding path program 1 times [2023-11-29 04:49:58,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:58,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251206504] [2023-11-29 04:49:58,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:58,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:59,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:59,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251206504] [2023-11-29 04:49:59,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251206504] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:49:59,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373563896] [2023-11-29 04:49:59,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:59,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:59,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:59,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:49:59,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:49:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:59,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:49:59,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:00,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:01,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373563896] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:01,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:50:01,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-11-29 04:50:01,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992738029] [2023-11-29 04:50:01,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:01,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 04:50:01,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 04:50:01,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2023-11-29 04:50:01,461 INFO L87 Difference]: Start difference. First operand 7656 states and 10875 transitions. Second operand has 27 states, 27 states have (on average 8.0) internal successors, (216), 27 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:50:02,508 INFO L93 Difference]: Finished difference Result 18478 states and 24887 transitions. [2023-11-29 04:50:02,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:50:02,509 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.0) internal successors, (216), 27 states have internal predecessors, (216), 0 states have call successors, (0), 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 83 [2023-11-29 04:50:02,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:50:02,519 INFO L225 Difference]: With dead ends: 18478 [2023-11-29 04:50:02,519 INFO L226 Difference]: Without dead ends: 12635 [2023-11-29 04:50:02,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=329, Invalid=1153, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 04:50:02,524 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 7699 mSDsluCounter, 6416 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7699 SdHoareTripleChecker+Valid, 7924 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:50:02,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7699 Valid, 7924 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:50:02,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12635 states. [2023-11-29 04:50:02,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12635 to 12183. [2023-11-29 04:50:02,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12183 states, 12181 states have (on average 1.3700024628519827) internal successors, (16688), 12182 states have internal predecessors, (16688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12183 states to 12183 states and 16688 transitions. [2023-11-29 04:50:02,886 INFO L78 Accepts]: Start accepts. Automaton has 12183 states and 16688 transitions. Word has length 83 [2023-11-29 04:50:02,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:50:02,887 INFO L495 AbstractCegarLoop]: Abstraction has 12183 states and 16688 transitions. [2023-11-29 04:50:02,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.0) internal successors, (216), 27 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 12183 states and 16688 transitions. [2023-11-29 04:50:02,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 04:50:02,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:02,888 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:02,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:50:03,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 04:50:03,089 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:50:03,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:03,089 INFO L85 PathProgramCache]: Analyzing trace with hash 818188177, now seen corresponding path program 1 times [2023-11-29 04:50:03,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:03,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850234134] [2023-11-29 04:50:03,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:03,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:03,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:03,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850234134] [2023-11-29 04:50:03,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850234134] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:03,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616898881] [2023-11-29 04:50:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:03,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:03,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:03,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:03,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:50:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:03,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:50:03,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:04,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:05,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616898881] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:05,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:50:05,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-11-29 04:50:05,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432528803] [2023-11-29 04:50:05,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:05,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 04:50:05,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:05,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 04:50:05,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-11-29 04:50:05,269 INFO L87 Difference]: Start difference. First operand 12183 states and 16688 transitions. Second operand has 24 states, 24 states have (on average 9.625) internal successors, (231), 23 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:08,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:50:08,043 INFO L93 Difference]: Finished difference Result 34993 states and 46191 transitions. [2023-11-29 04:50:08,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 04:50:08,044 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.625) internal successors, (231), 23 states have internal predecessors, (231), 0 states have call successors, (0), 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 83 [2023-11-29 04:50:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:50:08,065 INFO L225 Difference]: With dead ends: 34993 [2023-11-29 04:50:08,065 INFO L226 Difference]: Without dead ends: 25139 [2023-11-29 04:50:08,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=687, Invalid=2619, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 04:50:08,072 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 18840 mSDsluCounter, 6657 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18840 SdHoareTripleChecker+Valid, 8175 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:50:08,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18840 Valid, 8175 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:50:08,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25139 states. [2023-11-29 04:50:08,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25139 to 21667. [2023-11-29 04:50:08,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21667 states, 21665 states have (on average 1.30408492960997) internal successors, (28253), 21666 states have internal predecessors, (28253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21667 states to 21667 states and 28253 transitions. [2023-11-29 04:50:08,891 INFO L78 Accepts]: Start accepts. Automaton has 21667 states and 28253 transitions. Word has length 83 [2023-11-29 04:50:08,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:50:08,891 INFO L495 AbstractCegarLoop]: Abstraction has 21667 states and 28253 transitions. [2023-11-29 04:50:08,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.625) internal successors, (231), 23 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand 21667 states and 28253 transitions. [2023-11-29 04:50:08,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-29 04:50:08,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:08,893 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:08,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:50:09,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 04:50:09,094 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:50:09,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:09,094 INFO L85 PathProgramCache]: Analyzing trace with hash -165200253, now seen corresponding path program 1 times [2023-11-29 04:50:09,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:09,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107002645] [2023-11-29 04:50:09,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:09,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:09,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:09,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107002645] [2023-11-29 04:50:09,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107002645] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:09,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057239965] [2023-11-29 04:50:09,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:09,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:09,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:09,507 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:09,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:50:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:09,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:50:09,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:10,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:10,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057239965] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:10,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:50:10,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-29 04:50:10,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528881685] [2023-11-29 04:50:10,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:10,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 04:50:10,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:10,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 04:50:10,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2023-11-29 04:50:10,710 INFO L87 Difference]: Start difference. First operand 21667 states and 28253 transitions. Second operand has 25 states, 25 states have (on average 8.6) internal successors, (215), 24 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:15,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:50:15,003 INFO L93 Difference]: Finished difference Result 108438 states and 137665 transitions. [2023-11-29 04:50:15,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 04:50:15,004 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.6) internal successors, (215), 24 states have internal predecessors, (215), 0 states have call successors, (0), 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 84 [2023-11-29 04:50:15,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:50:15,073 INFO L225 Difference]: With dead ends: 108438 [2023-11-29 04:50:15,073 INFO L226 Difference]: Without dead ends: 88733 [2023-11-29 04:50:15,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=553, Invalid=2417, Unknown=0, NotChecked=0, Total=2970 [2023-11-29 04:50:15,090 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 21524 mSDsluCounter, 8681 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21524 SdHoareTripleChecker+Valid, 10254 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:50:15,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21524 Valid, 10254 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 04:50:15,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88733 states. [2023-11-29 04:50:18,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88733 to 83705. [2023-11-29 04:50:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83705 states, 83703 states have (on average 1.246872871940074) internal successors, (104367), 83704 states have internal predecessors, (104367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:18,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83705 states to 83705 states and 104367 transitions. [2023-11-29 04:50:18,469 INFO L78 Accepts]: Start accepts. Automaton has 83705 states and 104367 transitions. Word has length 84 [2023-11-29 04:50:18,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:50:18,469 INFO L495 AbstractCegarLoop]: Abstraction has 83705 states and 104367 transitions. [2023-11-29 04:50:18,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.6) internal successors, (215), 24 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:18,469 INFO L276 IsEmpty]: Start isEmpty. Operand 83705 states and 104367 transitions. [2023-11-29 04:50:18,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 04:50:18,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:18,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:18,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:50:18,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:18,673 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:50:18,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:18,674 INFO L85 PathProgramCache]: Analyzing trace with hash -680929417, now seen corresponding path program 1 times [2023-11-29 04:50:18,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:18,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295483326] [2023-11-29 04:50:18,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:18,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:19,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:19,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:19,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295483326] [2023-11-29 04:50:19,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295483326] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:19,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195946621] [2023-11-29 04:50:19,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:19,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:19,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:19,506 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:19,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:50:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:19,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 04:50:19,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:22,020 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:22,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:24,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195946621] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:24,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:50:24,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 15] total 42 [2023-11-29 04:50:24,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762204751] [2023-11-29 04:50:24,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:24,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 04:50:24,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:24,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 04:50:24,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 04:50:24,059 INFO L87 Difference]: Start difference. First operand 83705 states and 104367 transitions. Second operand has 42 states, 42 states have (on average 5.571428571428571) internal successors, (234), 42 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:06,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:51:06,554 INFO L93 Difference]: Finished difference Result 203016 states and 252017 transitions. [2023-11-29 04:51:06,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2023-11-29 04:51:06,554 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.571428571428571) internal successors, (234), 42 states have internal predecessors, (234), 0 states have call successors, (0), 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 04:51:06,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:51:06,688 INFO L225 Difference]: With dead ends: 203016 [2023-11-29 04:51:06,688 INFO L226 Difference]: Without dead ends: 159399 [2023-11-29 04:51:06,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24222 ImplicationChecksByTransitivity, 34.6s TimeCoverageRelationStatistics Valid=8183, Invalid=53569, Unknown=0, NotChecked=0, Total=61752 [2023-11-29 04:51:06,726 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 21465 mSDsluCounter, 25647 mSDsCounter, 0 mSdLazyCounter, 3902 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21465 SdHoareTripleChecker+Valid, 27224 SdHoareTripleChecker+Invalid, 4070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 3902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:51:06,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21465 Valid, 27224 Invalid, 4070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [168 Valid, 3902 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 04:51:06,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159399 states. [2023-11-29 04:51:11,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159399 to 88693. [2023-11-29 04:51:11,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88693 states, 88691 states have (on average 1.2492699371976863) internal successors, (110799), 88692 states have internal predecessors, (110799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88693 states to 88693 states and 110799 transitions. [2023-11-29 04:51:11,283 INFO L78 Accepts]: Start accepts. Automaton has 88693 states and 110799 transitions. Word has length 86 [2023-11-29 04:51:11,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:51:11,283 INFO L495 AbstractCegarLoop]: Abstraction has 88693 states and 110799 transitions. [2023-11-29 04:51:11,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.571428571428571) internal successors, (234), 42 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:11,283 INFO L276 IsEmpty]: Start isEmpty. Operand 88693 states and 110799 transitions. [2023-11-29 04:51:11,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 04:51:11,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:51:11,285 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:11,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:51:11,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 04:51:11,486 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:51:11,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:11,486 INFO L85 PathProgramCache]: Analyzing trace with hash 837968283, now seen corresponding path program 1 times [2023-11-29 04:51:11,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:11,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306145215] [2023-11-29 04:51:11,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:11,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:12,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:12,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306145215] [2023-11-29 04:51:12,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306145215] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:51:12,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719431547] [2023-11-29 04:51:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:12,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:12,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:12,068 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:51:12,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:51:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:12,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:51:12,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:51:12,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:12,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:51:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:13,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719431547] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:51:13,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:51:13,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2023-11-29 04:51:13,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947295199] [2023-11-29 04:51:13,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:51:13,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 04:51:13,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:13,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 04:51:13,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2023-11-29 04:51:13,883 INFO L87 Difference]: Start difference. First operand 88693 states and 110799 transitions. Second operand has 32 states, 32 states have (on average 6.3125) internal successors, (202), 32 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:18,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:51:18,889 INFO L93 Difference]: Finished difference Result 110147 states and 137300 transitions. [2023-11-29 04:51:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 04:51:18,890 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.3125) internal successors, (202), 32 states have internal predecessors, (202), 0 states have call successors, (0), 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 04:51:18,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:51:18,954 INFO L225 Difference]: With dead ends: 110147 [2023-11-29 04:51:18,955 INFO L226 Difference]: Without dead ends: 80233 [2023-11-29 04:51:18,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=544, Invalid=1906, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 04:51:18,971 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 11650 mSDsluCounter, 18010 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11650 SdHoareTripleChecker+Valid, 19520 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:51:18,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11650 Valid, 19520 Invalid, 724 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:51:19,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80233 states. [2023-11-29 04:51:22,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80233 to 78735. [2023-11-29 04:51:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78735 states, 78733 states have (on average 1.2455387194695997) internal successors, (98065), 78734 states have internal predecessors, (98065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78735 states to 78735 states and 98065 transitions. [2023-11-29 04:51:22,898 INFO L78 Accepts]: Start accepts. Automaton has 78735 states and 98065 transitions. Word has length 86 [2023-11-29 04:51:22,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:51:22,899 INFO L495 AbstractCegarLoop]: Abstraction has 78735 states and 98065 transitions. [2023-11-29 04:51:22,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.3125) internal successors, (202), 32 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:22,899 INFO L276 IsEmpty]: Start isEmpty. Operand 78735 states and 98065 transitions. [2023-11-29 04:51:22,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 04:51:22,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:51:22,900 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] [2023-11-29 04:51:22,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:51:23,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 04:51:23,101 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:51:23,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:23,101 INFO L85 PathProgramCache]: Analyzing trace with hash 849099911, now seen corresponding path program 1 times [2023-11-29 04:51:23,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:23,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418305585] [2023-11-29 04:51:23,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:23,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:25,108 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 04:51:25,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:25,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418305585] [2023-11-29 04:51:25,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418305585] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:51:25,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672577299] [2023-11-29 04:51:25,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:25,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:25,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:25,109 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:51:25,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:51:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:25,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 04:51:25,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:51:26,445 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 04:51:26,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:51:27,756 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 04:51:27,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672577299] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:51:27,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:51:27,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 13] total 43 [2023-11-29 04:51:27,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895603625] [2023-11-29 04:51:27,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:51:27,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 04:51:27,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:27,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 04:51:27,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1652, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 04:51:27,758 INFO L87 Difference]: Start difference. First operand 78735 states and 98065 transitions. Second operand has 43 states, 43 states have (on average 5.558139534883721) internal successors, (239), 43 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:47,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:51:47,430 INFO L93 Difference]: Finished difference Result 204545 states and 253527 transitions. [2023-11-29 04:51:47,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-11-29 04:51:47,431 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.558139534883721) internal successors, (239), 43 states have internal predecessors, (239), 0 states have call successors, (0), 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 04:51:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:51:47,595 INFO L225 Difference]: With dead ends: 204545 [2023-11-29 04:51:47,595 INFO L226 Difference]: Without dead ends: 174881 [2023-11-29 04:51:47,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5249 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=3496, Invalid=13274, Unknown=0, NotChecked=0, Total=16770 [2023-11-29 04:51:47,614 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 17465 mSDsluCounter, 24867 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17465 SdHoareTripleChecker+Valid, 26415 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:51:47,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17465 Valid, 26415 Invalid, 2270 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [149 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 04:51:47,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174881 states. [2023-11-29 04:51:52,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174881 to 69014. [2023-11-29 04:51:52,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69014 states, 69012 states have (on average 1.2468845997797484) internal successors, (86050), 69013 states have internal predecessors, (86050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:52,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69014 states to 69014 states and 86050 transitions. [2023-11-29 04:51:52,494 INFO L78 Accepts]: Start accepts. Automaton has 69014 states and 86050 transitions. Word has length 87 [2023-11-29 04:51:52,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:51:52,494 INFO L495 AbstractCegarLoop]: Abstraction has 69014 states and 86050 transitions. [2023-11-29 04:51:52,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.558139534883721) internal successors, (239), 43 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:52,494 INFO L276 IsEmpty]: Start isEmpty. Operand 69014 states and 86050 transitions. [2023-11-29 04:51:52,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 04:51:52,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:51:52,495 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] [2023-11-29 04:51:52,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 04:51:52,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 04:51:52,696 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:51:52,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:52,696 INFO L85 PathProgramCache]: Analyzing trace with hash -600890467, now seen corresponding path program 1 times [2023-11-29 04:51:52,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:52,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637219229] [2023-11-29 04:51:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:52,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:53,419 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 04:51:53,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:53,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637219229] [2023-11-29 04:51:53,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637219229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:51:53,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985934548] [2023-11-29 04:51:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:53,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:53,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:53,421 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:51:53,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:51:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:53,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:51:53,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:51:54,550 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 04:51:54,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:51:55,245 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 04:51:55,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985934548] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:51:55,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:51:55,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2023-11-29 04:51:55,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140196495] [2023-11-29 04:51:55,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:51:55,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 04:51:55,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:55,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 04:51:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2023-11-29 04:51:55,247 INFO L87 Difference]: Start difference. First operand 69014 states and 86050 transitions. Second operand has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:00,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:52:00,714 INFO L93 Difference]: Finished difference Result 95801 states and 118680 transitions. [2023-11-29 04:52:00,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 04:52:00,714 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 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 04:52:00,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:52:00,765 INFO L225 Difference]: With dead ends: 95801 [2023-11-29 04:52:00,765 INFO L226 Difference]: Without dead ends: 67926 [2023-11-29 04:52:00,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 04:52:00,778 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 9856 mSDsluCounter, 15141 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9856 SdHoareTripleChecker+Valid, 16663 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:52:00,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9856 Valid, 16663 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:52:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67926 states. [2023-11-29 04:52:03,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67926 to 46390. [2023-11-29 04:52:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46390 states, 46388 states have (on average 1.2496766405104769) internal successors, (57970), 46389 states have internal predecessors, (57970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:03,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46390 states to 46390 states and 57970 transitions. [2023-11-29 04:52:03,781 INFO L78 Accepts]: Start accepts. Automaton has 46390 states and 57970 transitions. Word has length 88 [2023-11-29 04:52:03,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:52:03,781 INFO L495 AbstractCegarLoop]: Abstraction has 46390 states and 57970 transitions. [2023-11-29 04:52:03,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 46390 states and 57970 transitions. [2023-11-29 04:52:03,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 04:52:03,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:52:03,784 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:52:03,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 04:52:03,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:03,985 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:52:03,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:03,986 INFO L85 PathProgramCache]: Analyzing trace with hash 213925849, now seen corresponding path program 1 times [2023-11-29 04:52:03,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:03,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600006584] [2023-11-29 04:52:03,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:03,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:52:04,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:04,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600006584] [2023-11-29 04:52:04,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600006584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:52:04,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:52:04,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:52:04,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243703532] [2023-11-29 04:52:04,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:52:04,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:52:04,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:04,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:52:04,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:52:04,176 INFO L87 Difference]: Start difference. First operand 46390 states and 57970 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:13,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:52:13,139 INFO L93 Difference]: Finished difference Result 50147 states and 64968 transitions. [2023-11-29 04:52:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:52:13,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-11-29 04:52:13,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:52:13,178 INFO L225 Difference]: With dead ends: 50147 [2023-11-29 04:52:13,178 INFO L226 Difference]: Without dead ends: 48643 [2023-11-29 04:52:13,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:52:13,186 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 2353 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4792 mSolverCounterSat, 1179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 5971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1179 IncrementalHoareTripleChecker+Valid, 4792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:52:13,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2353 Valid, 811 Invalid, 5971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1179 Valid, 4792 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-29 04:52:13,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48643 states. [2023-11-29 04:52:16,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48643 to 48643. [2023-11-29 04:52:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48643 states, 48641 states have (on average 1.2450401924302543) internal successors, (60560), 48642 states have internal predecessors, (60560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:16,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48643 states to 48643 states and 60560 transitions. [2023-11-29 04:52:16,220 INFO L78 Accepts]: Start accepts. Automaton has 48643 states and 60560 transitions. Word has length 120 [2023-11-29 04:52:16,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:52:16,221 INFO L495 AbstractCegarLoop]: Abstraction has 48643 states and 60560 transitions. [2023-11-29 04:52:16,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:16,221 INFO L276 IsEmpty]: Start isEmpty. Operand 48643 states and 60560 transitions. [2023-11-29 04:52:16,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-29 04:52:16,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:52:16,226 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:52:16,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 04:52:16,227 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:52:16,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash 853039727, now seen corresponding path program 1 times [2023-11-29 04:52:16,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:16,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450869683] [2023-11-29 04:52:16,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:16,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:52:17,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:17,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450869683] [2023-11-29 04:52:17,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450869683] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:52:17,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709331282] [2023-11-29 04:52:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:17,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:17,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:52:17,135 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:52:17,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:52:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:17,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 04:52:17,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:52:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 55 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:52:18,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:52:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 47 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:52:20,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709331282] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:52:20,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:52:20,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 33 [2023-11-29 04:52:20,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783033803] [2023-11-29 04:52:20,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:52:20,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 04:52:20,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:20,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 04:52:20,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 04:52:20,228 INFO L87 Difference]: Start difference. First operand 48643 states and 60560 transitions. Second operand has 34 states, 34 states have (on average 10.676470588235293) internal successors, (363), 33 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:33,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:52:33,142 INFO L93 Difference]: Finished difference Result 98806 states and 122571 transitions. [2023-11-29 04:52:33,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-11-29 04:52:33,142 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 10.676470588235293) internal successors, (363), 33 states have internal predecessors, (363), 0 states have call successors, (0), 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 134 [2023-11-29 04:52:33,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:52:33,197 INFO L225 Difference]: With dead ends: 98806 [2023-11-29 04:52:33,197 INFO L226 Difference]: Without dead ends: 66065 [2023-11-29 04:52:33,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5264 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2787, Invalid=15845, Unknown=0, NotChecked=0, Total=18632 [2023-11-29 04:52:33,212 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 21979 mSDsluCounter, 13224 mSDsCounter, 0 mSdLazyCounter, 2816 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21979 SdHoareTripleChecker+Valid, 14778 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:52:33,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21979 Valid, 14778 Invalid, 2875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2816 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 04:52:33,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66065 states. [2023-11-29 04:52:37,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66065 to 62395. [2023-11-29 04:52:37,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62395 states, 62393 states have (on average 1.2319651242927891) internal successors, (76866), 62394 states have internal predecessors, (76866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62395 states to 62395 states and 76866 transitions. [2023-11-29 04:52:37,494 INFO L78 Accepts]: Start accepts. Automaton has 62395 states and 76866 transitions. Word has length 134 [2023-11-29 04:52:37,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:52:37,494 INFO L495 AbstractCegarLoop]: Abstraction has 62395 states and 76866 transitions. [2023-11-29 04:52:37,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.676470588235293) internal successors, (363), 33 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:37,494 INFO L276 IsEmpty]: Start isEmpty. Operand 62395 states and 76866 transitions. [2023-11-29 04:52:37,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-29 04:52:37,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:52:37,500 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:52:37,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:52:37,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:37,701 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:52:37,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:37,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1143865233, now seen corresponding path program 1 times [2023-11-29 04:52:37,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:37,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726815624] [2023-11-29 04:52:37,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:37,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 38 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:52:38,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:38,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726815624] [2023-11-29 04:52:38,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726815624] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:52:38,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008683143] [2023-11-29 04:52:38,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:38,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:38,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:52:38,656 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:52:38,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:52:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:38,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 04:52:38,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:52:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 19 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:52:39,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:52:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 13 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:52:42,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008683143] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:52:42,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:52:42,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-11-29 04:52:42,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009995342] [2023-11-29 04:52:42,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:52:42,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 04:52:42,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:42,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 04:52:42,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 04:52:42,094 INFO L87 Difference]: Start difference. First operand 62395 states and 76866 transitions. Second operand has 36 states, 36 states have (on average 10.805555555555555) internal successors, (389), 35 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:04,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:53:04,106 INFO L93 Difference]: Finished difference Result 133302 states and 164804 transitions. [2023-11-29 04:53:04,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2023-11-29 04:53:04,107 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.805555555555555) internal successors, (389), 35 states have internal predecessors, (389), 0 states have call successors, (0), 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 134 [2023-11-29 04:53:04,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:53:04,183 INFO L225 Difference]: With dead ends: 133302 [2023-11-29 04:53:04,183 INFO L226 Difference]: Without dead ends: 92612 [2023-11-29 04:53:04,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9349 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=4480, Invalid=24590, Unknown=0, NotChecked=0, Total=29070 [2023-11-29 04:53:04,197 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 26695 mSDsluCounter, 16047 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26695 SdHoareTripleChecker+Valid, 17586 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:53:04,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26695 Valid, 17586 Invalid, 2555 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 2455 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 04:53:04,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92612 states. [2023-11-29 04:53:08,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92612 to 41333. [2023-11-29 04:53:08,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41333 states, 41331 states have (on average 1.2229077447920447) internal successors, (50544), 41332 states have internal predecessors, (50544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:08,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41333 states to 41333 states and 50544 transitions. [2023-11-29 04:53:08,096 INFO L78 Accepts]: Start accepts. Automaton has 41333 states and 50544 transitions. Word has length 134 [2023-11-29 04:53:08,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:53:08,096 INFO L495 AbstractCegarLoop]: Abstraction has 41333 states and 50544 transitions. [2023-11-29 04:53:08,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.805555555555555) internal successors, (389), 35 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:08,096 INFO L276 IsEmpty]: Start isEmpty. Operand 41333 states and 50544 transitions. [2023-11-29 04:53:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-29 04:53:08,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:53:08,101 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:53:08,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:53:08,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 04:53:08,301 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:53:08,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:53:08,302 INFO L85 PathProgramCache]: Analyzing trace with hash 991408831, now seen corresponding path program 1 times [2023-11-29 04:53:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:53:08,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017915116] [2023-11-29 04:53:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:08,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:53:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:09,341 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:53:09,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:53:09,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017915116] [2023-11-29 04:53:09,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017915116] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:53:09,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645152753] [2023-11-29 04:53:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:09,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:53:09,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:53:09,343 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:53:09,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:53:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:09,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 04:53:09,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:53:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 33 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:53:10,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:53:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 31 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:53:12,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645152753] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:53:12,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:53:12,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 11] total 39 [2023-11-29 04:53:12,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826707065] [2023-11-29 04:53:12,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:53:12,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 04:53:12,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:53:12,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 04:53:12,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 04:53:12,418 INFO L87 Difference]: Start difference. First operand 41333 states and 50544 transitions. Second operand has 40 states, 40 states have (on average 9.575) internal successors, (383), 39 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:28,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:53:28,408 INFO L93 Difference]: Finished difference Result 73075 states and 88886 transitions. [2023-11-29 04:53:28,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-11-29 04:53:28,409 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 9.575) internal successors, (383), 39 states have internal predecessors, (383), 0 states have call successors, (0), 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 136 [2023-11-29 04:53:28,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:53:28,449 INFO L225 Difference]: With dead ends: 73075 [2023-11-29 04:53:28,449 INFO L226 Difference]: Without dead ends: 54492 [2023-11-29 04:53:28,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7155 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=3175, Invalid=20387, Unknown=0, NotChecked=0, Total=23562 [2023-11-29 04:53:28,459 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 25163 mSDsluCounter, 28095 mSDsCounter, 0 mSdLazyCounter, 3306 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25163 SdHoareTripleChecker+Valid, 29651 SdHoareTripleChecker+Invalid, 3514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 3306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:53:28,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25163 Valid, 29651 Invalid, 3514 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [208 Valid, 3306 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 04:53:28,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54492 states. [2023-11-29 04:53:33,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54492 to 49336. [2023-11-29 04:53:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49336 states, 49334 states have (on average 1.2123484817772734) internal successors, (59810), 49335 states have internal predecessors, (59810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:33,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49336 states to 49336 states and 59810 transitions. [2023-11-29 04:53:33,128 INFO L78 Accepts]: Start accepts. Automaton has 49336 states and 59810 transitions. Word has length 136 [2023-11-29 04:53:33,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:53:33,129 INFO L495 AbstractCegarLoop]: Abstraction has 49336 states and 59810 transitions. [2023-11-29 04:53:33,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 9.575) internal successors, (383), 39 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:33,129 INFO L276 IsEmpty]: Start isEmpty. Operand 49336 states and 59810 transitions. [2023-11-29 04:53:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-29 04:53:33,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:53:33,134 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:53:33,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 04:53:33,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 04:53:33,334 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:53:33,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:53:33,335 INFO L85 PathProgramCache]: Analyzing trace with hash -43807619, now seen corresponding path program 1 times [2023-11-29 04:53:33,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:53:33,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677116171] [2023-11-29 04:53:33,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:33,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:53:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:53:36,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:53:36,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677116171] [2023-11-29 04:53:36,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677116171] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:53:36,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132831830] [2023-11-29 04:53:36,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:36,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:53:36,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:53:36,140 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:53:36,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c77bf04-6be3-426e-8e06-32ad0e659d8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 04:53:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:36,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-29 04:53:36,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:53:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:53:51,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:54:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:12,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132831830] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:54:12,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:54:12,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 39, 37] total 103 [2023-11-29 04:54:12,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280591813] [2023-11-29 04:54:12,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:54:12,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2023-11-29 04:54:12,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:12,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2023-11-29 04:54:12,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=9622, Unknown=0, NotChecked=0, Total=10506 [2023-11-29 04:54:12,388 INFO L87 Difference]: Start difference. First operand 49336 states and 59810 transitions. Second operand has 103 states, 103 states have (on average 3.8155339805825244) internal successors, (393), 103 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:36,084 WARN L293 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 374 DAG size of output: 218 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:54:48,063 WARN L293 SmtUtils]: Spent 6.98s on a formula simplification. DAG size of input: 390 DAG size of output: 221 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:54:55,030 WARN L293 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 405 DAG size of output: 219 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)