./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fde4aa10540dafc8826e147080809d5acc35a439830c8d5d4d25a271d8a78822 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:41:14,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:41:14,687 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:41:14,692 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:41:14,692 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:41:14,732 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:41:14,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:41:14,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:41:14,734 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:41:14,735 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:41:14,736 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:41:14,737 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:41:14,737 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:41:14,738 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:41:14,738 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:41:14,739 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:41:14,740 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:41:14,740 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:41:14,741 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:41:14,741 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:41:14,742 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:41:14,743 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:41:14,743 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:41:14,744 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:41:14,744 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:41:14,745 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:41:14,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:41:14,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:41:14,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:14,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:41:14,748 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:41:14,748 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:41:14,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:41:14,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:41:14,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:41:14,750 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:41:14,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:41:14,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:41:14,752 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:41:14,752 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_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fde4aa10540dafc8826e147080809d5acc35a439830c8d5d4d25a271d8a78822 [2023-11-06 22:41:15,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:41:15,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:41:15,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:41:15,114 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:41:15,114 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:41:15,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-2.c [2023-11-06 22:41:18,336 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:41:19,154 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:41:19,154 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-2.c [2023-11-06 22:41:19,230 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/bin/uautomizer-verify-WvqO1wxjHP/data/c18a429d9/0eb22cdc150e4f578ebc9ea19a0f2a48/FLAGc0b6acd9d [2023-11-06 22:41:19,247 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/bin/uautomizer-verify-WvqO1wxjHP/data/c18a429d9/0eb22cdc150e4f578ebc9ea19a0f2a48 [2023-11-06 22:41:19,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:41:19,257 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:41:19,285 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:19,285 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:41:19,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:41:19,291 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:19" (1/1) ... [2023-11-06 22:41:19,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557d2f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:19, skipping insertion in model container [2023-11-06 22:41:19,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:19" (1/1) ... [2023-11-06 22:41:19,592 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:41:22,275 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_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-2.c[382357,382370] [2023-11-06 22:41:22,298 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_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-2.c[383339,383352] [2023-11-06 22:41:22,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:22,578 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:41:23,849 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_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-2.c[382357,382370] [2023-11-06 22:41:23,853 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_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/sv-benchmarks/c/combinations/Problem05_label46+token_ring.08.cil-2.c[383339,383352] [2023-11-06 22:41:23,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:23,958 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:41:23,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:23 WrapperNode [2023-11-06 22:41:23,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:23,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:23,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:41:23,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:41:23,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:23" (1/1) ... [2023-11-06 22:41:24,073 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:23" (1/1) ... [2023-11-06 22:41:24,518 INFO L138 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 12994 [2023-11-06 22:41:24,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:24,519 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:41:24,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:41:24,520 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:41:24,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:23" (1/1) ... [2023-11-06 22:41:24,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:23" (1/1) ... [2023-11-06 22:41:24,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:23" (1/1) ... [2023-11-06 22:41:24,579 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:23" (1/1) ... [2023-11-06 22:41:24,889 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:23" (1/1) ... [2023-11-06 22:41:24,938 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:23" (1/1) ... [2023-11-06 22:41:24,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:23" (1/1) ... [2023-11-06 22:41:24,978 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:23" (1/1) ... [2023-11-06 22:41:25,100 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:41:25,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:41:25,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:41:25,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:41:25,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:23" (1/1) ... [2023-11-06 22:41:25,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:25,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:25,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:41:25,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb9b9b1-8083-44b0-bcfc-2526bb2ef998/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:41:25,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:41:25,184 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-06 22:41:25,184 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-06 22:41:25,184 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-06 22:41:25,185 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-06 22:41:25,185 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-06 22:41:25,185 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-06 22:41:25,185 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-06 22:41:25,185 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-06 22:41:25,187 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-06 22:41:25,187 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-06 22:41:25,187 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-06 22:41:25,188 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-06 22:41:25,188 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-06 22:41:25,188 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-06 22:41:25,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:41:25,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:41:25,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:41:25,349 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:41:25,351 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:41:34,784 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:41:34,820 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:41:34,820 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-06 22:41:34,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:34 BoogieIcfgContainer [2023-11-06 22:41:34,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:41:34,831 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:41:34,831 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:41:34,834 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:41:34,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:41:19" (1/3) ... [2023-11-06 22:41:34,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559ed89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:34, skipping insertion in model container [2023-11-06 22:41:34,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:23" (2/3) ... [2023-11-06 22:41:34,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559ed89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:34, skipping insertion in model container [2023-11-06 22:41:34,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:34" (3/3) ... [2023-11-06 22:41:34,840 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.08.cil-2.c [2023-11-06 22:41:34,860 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:41:34,860 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:41:35,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:41:35,010 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@765b65a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:41:35,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:41:35,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 2482 states, 2448 states have (on average 1.8455882352941178) internal successors, (4518), 2453 states have internal predecessors, (4518), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-06 22:41:35,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-06 22:41:35,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:35,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:35,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:35,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:35,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1791270743, now seen corresponding path program 1 times [2023-11-06 22:41:35,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:35,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758940918] [2023-11-06 22:41:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:35,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:35,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:41:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:35,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:41:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:35,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:41:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:35,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:41:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:35,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 22:41:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:35,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:35,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:35,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758940918] [2023-11-06 22:41:35,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758940918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:35,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:35,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:35,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656328805] [2023-11-06 22:41:35,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:35,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:35,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:35,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:35,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:35,845 INFO L87 Difference]: Start difference. First operand has 2482 states, 2448 states have (on average 1.8455882352941178) internal successors, (4518), 2453 states have internal predecessors, (4518), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:41:38,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:38,005 INFO L93 Difference]: Finished difference Result 5055 states and 9290 transitions. [2023-11-06 22:41:38,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:41:38,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2023-11-06 22:41:38,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:38,043 INFO L225 Difference]: With dead ends: 5055 [2023-11-06 22:41:38,043 INFO L226 Difference]: Without dead ends: 2512 [2023-11-06 22:41:38,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:41:38,057 INFO L413 NwaCegarLoop]: 4302 mSDtfsCounter, 761 mSDsluCounter, 12397 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 16699 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:38,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 16699 Invalid, 781 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [52 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:41:38,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2023-11-06 22:41:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 2414. [2023-11-06 22:41:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2382 states have (on average 1.8316540722082284) internal successors, (4363), 2385 states have internal predecessors, (4363), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 22:41:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 4409 transitions. [2023-11-06 22:41:38,248 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 4409 transitions. Word has length 135 [2023-11-06 22:41:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:38,248 INFO L495 AbstractCegarLoop]: Abstraction has 2414 states and 4409 transitions. [2023-11-06 22:41:38,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:41:38,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 4409 transitions. [2023-11-06 22:41:38,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-06 22:41:38,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:38,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:38,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:41:38,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:38,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:38,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1361612437, now seen corresponding path program 1 times [2023-11-06 22:41:38,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:38,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679639767] [2023-11-06 22:41:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:38,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:38,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:41:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:38,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:41:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:38,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:41:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:38,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:41:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 22:41:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:38,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:38,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:38,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679639767] [2023-11-06 22:41:38,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679639767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:38,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:38,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:41:38,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118279268] [2023-11-06 22:41:38,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:38,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:41:38,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:38,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:41:38,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:41:38,703 INFO L87 Difference]: Start difference. First operand 2414 states and 4409 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:41:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:42,295 INFO L93 Difference]: Finished difference Result 3174 states and 5618 transitions. [2023-11-06 22:41:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:41:42,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2023-11-06 22:41:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:42,318 INFO L225 Difference]: With dead ends: 3174 [2023-11-06 22:41:42,318 INFO L226 Difference]: Without dead ends: 2897 [2023-11-06 22:41:42,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:41:42,323 INFO L413 NwaCegarLoop]: 4211 mSDtfsCounter, 5083 mSDsluCounter, 12640 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5098 SdHoareTripleChecker+Valid, 16851 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:42,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5098 Valid, 16851 Invalid, 1698 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [100 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 22:41:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2023-11-06 22:41:42,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2700. [2023-11-06 22:41:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2644 states have (on average 1.8055975794251136) internal successors, (4774), 2648 states have internal predecessors, (4774), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2023-11-06 22:41:42,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 4857 transitions. [2023-11-06 22:41:42,528 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 4857 transitions. Word has length 135 [2023-11-06 22:41:42,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:42,531 INFO L495 AbstractCegarLoop]: Abstraction has 2700 states and 4857 transitions. [2023-11-06 22:41:42,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:41:42,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 4857 transitions. [2023-11-06 22:41:42,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-06 22:41:42,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:42,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:42,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:41:42,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:42,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:42,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1571352423, now seen corresponding path program 1 times [2023-11-06 22:41:42,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:42,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246516790] [2023-11-06 22:41:42,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:42,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:42,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:41:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:42,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:41:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:43,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:41:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:43,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:41:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:43,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 22:41:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:43,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:43,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246516790] [2023-11-06 22:41:43,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246516790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:43,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:43,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:41:43,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766439804] [2023-11-06 22:41:43,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:43,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:41:43,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:43,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:41:43,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:41:43,198 INFO L87 Difference]: Start difference. First operand 2700 states and 4857 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:41:47,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:47,420 INFO L93 Difference]: Finished difference Result 3855 states and 6694 transitions. [2023-11-06 22:41:47,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:41:47,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2023-11-06 22:41:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:47,444 INFO L225 Difference]: With dead ends: 3855 [2023-11-06 22:41:47,445 INFO L226 Difference]: Without dead ends: 3292 [2023-11-06 22:41:47,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:41:47,458 INFO L413 NwaCegarLoop]: 4405 mSDtfsCounter, 5100 mSDsluCounter, 17356 mSDsCounter, 0 mSdLazyCounter, 2546 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5115 SdHoareTripleChecker+Valid, 21761 SdHoareTripleChecker+Invalid, 2603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:47,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5115 Valid, 21761 Invalid, 2603 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2546 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-06 22:41:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2023-11-06 22:41:47,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 2967. [2023-11-06 22:41:47,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2887 states have (on average 1.7828195358503638) internal successors, (5147), 2892 states have internal predecessors, (5147), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2023-11-06 22:41:47,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 5266 transitions. [2023-11-06 22:41:47,645 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 5266 transitions. Word has length 135 [2023-11-06 22:41:47,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:47,645 INFO L495 AbstractCegarLoop]: Abstraction has 2967 states and 5266 transitions. [2023-11-06 22:41:47,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:41:47,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 5266 transitions. [2023-11-06 22:41:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-06 22:41:47,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:47,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:47,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:41:47,649 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:47,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:47,650 INFO L85 PathProgramCache]: Analyzing trace with hash -794682647, now seen corresponding path program 1 times [2023-11-06 22:41:47,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:47,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054964624] [2023-11-06 22:41:47,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:47,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:47,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:41:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:47,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:41:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:47,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:41:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:47,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:41:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:47,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 22:41:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:47,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:47,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:47,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054964624] [2023-11-06 22:41:47,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054964624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:47,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:47,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:41:47,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590368933] [2023-11-06 22:41:47,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:47,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:41:47,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:47,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:41:47,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:41:47,934 INFO L87 Difference]: Start difference. First operand 2967 states and 5266 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:41:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:51,506 INFO L93 Difference]: Finished difference Result 4859 states and 8269 transitions. [2023-11-06 22:41:51,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:41:51,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2023-11-06 22:41:51,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:51,540 INFO L225 Difference]: With dead ends: 4859 [2023-11-06 22:41:51,540 INFO L226 Difference]: Without dead ends: 4029 [2023-11-06 22:41:51,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:41:51,546 INFO L413 NwaCegarLoop]: 4221 mSDtfsCounter, 5182 mSDsluCounter, 16830 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 21051 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:51,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5197 Valid, 21051 Invalid, 2250 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-06 22:41:51,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4029 states. [2023-11-06 22:41:51,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4029 to 3502. [2023-11-06 22:41:51,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3502 states, 3374 states have (on average 1.7468879668049793) internal successors, (5894), 3381 states have internal predecessors, (5894), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-11-06 22:41:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 6089 transitions. [2023-11-06 22:41:51,791 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 6089 transitions. Word has length 135 [2023-11-06 22:41:51,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:51,791 INFO L495 AbstractCegarLoop]: Abstraction has 3502 states and 6089 transitions. [2023-11-06 22:41:51,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:41:51,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 6089 transitions. [2023-11-06 22:41:51,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-06 22:41:51,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:51,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:51,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:41:51,795 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:51,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:51,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1207203623, now seen corresponding path program 1 times [2023-11-06 22:41:51,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:51,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417411243] [2023-11-06 22:41:51,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:51,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:51,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:41:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:51,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:41:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:52,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:41:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:52,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:41:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:52,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 22:41:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:52,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:52,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417411243] [2023-11-06 22:41:52,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417411243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:52,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:52,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:41:52,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528366942] [2023-11-06 22:41:52,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:52,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:41:52,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:52,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:41:52,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:41:52,149 INFO L87 Difference]: Start difference. First operand 3502 states and 6089 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:41:56,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:56,247 INFO L93 Difference]: Finished difference Result 6794 states and 11288 transitions. [2023-11-06 22:41:56,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:41:56,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2023-11-06 22:41:56,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:56,293 INFO L225 Difference]: With dead ends: 6794 [2023-11-06 22:41:56,294 INFO L226 Difference]: Without dead ends: 5429 [2023-11-06 22:41:56,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:41:56,302 INFO L413 NwaCegarLoop]: 4403 mSDtfsCounter, 5098 mSDsluCounter, 17356 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5113 SdHoareTripleChecker+Valid, 21759 SdHoareTripleChecker+Invalid, 2594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:56,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5113 Valid, 21759 Invalid, 2594 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-06 22:41:56,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5429 states. [2023-11-06 22:41:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5429 to 4573. [2023-11-06 22:41:56,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 4349 states have (on average 1.6987813290411589) internal successors, (7388), 4360 states have internal predecessors, (7388), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-11-06 22:41:56,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7741 transitions. [2023-11-06 22:41:56,834 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7741 transitions. Word has length 135 [2023-11-06 22:41:56,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:56,834 INFO L495 AbstractCegarLoop]: Abstraction has 4573 states and 7741 transitions. [2023-11-06 22:41:56,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:41:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7741 transitions. [2023-11-06 22:41:56,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-06 22:41:56,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:56,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:56,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:41:56,840 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:56,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:56,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1360618711, now seen corresponding path program 1 times [2023-11-06 22:41:56,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:56,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185398818] [2023-11-06 22:41:56,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:56,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:41:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:57,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:41:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:57,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:41:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:57,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:41:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:57,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 22:41:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:57,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:57,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:57,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185398818] [2023-11-06 22:41:57,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185398818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:57,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:57,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:41:57,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074278708] [2023-11-06 22:41:57,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:57,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:41:57,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:57,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:41:57,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:41:57,150 INFO L87 Difference]: Start difference. First operand 4573 states and 7741 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:42:01,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:01,312 INFO L93 Difference]: Finished difference Result 10656 states and 17330 transitions. [2023-11-06 22:42:01,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:42:01,312 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2023-11-06 22:42:01,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:01,358 INFO L225 Difference]: With dead ends: 10656 [2023-11-06 22:42:01,358 INFO L226 Difference]: Without dead ends: 8220 [2023-11-06 22:42:01,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:42:01,370 INFO L413 NwaCegarLoop]: 4403 mSDtfsCounter, 5094 mSDsluCounter, 17356 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5109 SdHoareTripleChecker+Valid, 21759 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:01,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5109 Valid, 21759 Invalid, 2566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-06 22:42:01,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8220 states. [2023-11-06 22:42:02,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8220 to 6729. [2023-11-06 22:42:02,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6729 states, 6313 states have (on average 1.6473942658007286) internal successors, (10400), 6332 states have internal predecessors, (10400), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2023-11-06 22:42:02,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6729 states to 6729 states and 11087 transitions. [2023-11-06 22:42:02,078 INFO L78 Accepts]: Start accepts. Automaton has 6729 states and 11087 transitions. Word has length 135 [2023-11-06 22:42:02,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:02,079 INFO L495 AbstractCegarLoop]: Abstraction has 6729 states and 11087 transitions. [2023-11-06 22:42:02,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:42:02,079 INFO L276 IsEmpty]: Start isEmpty. Operand 6729 states and 11087 transitions. [2023-11-06 22:42:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-06 22:42:02,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:02,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:02,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:42:02,086 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:02,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:02,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1286985643, now seen corresponding path program 1 times [2023-11-06 22:42:02,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:02,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788812074] [2023-11-06 22:42:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:02,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:02,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:42:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:42:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:02,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:42:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:02,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:42:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:02,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 22:42:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:02,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:02,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788812074] [2023-11-06 22:42:02,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788812074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:02,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:02,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:42:02,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763202906] [2023-11-06 22:42:02,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:02,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:42:02,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:02,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:42:02,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:42:02,374 INFO L87 Difference]: Start difference. First operand 6729 states and 11087 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:42:07,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:07,250 INFO L93 Difference]: Finished difference Result 18398 states and 29506 transitions. [2023-11-06 22:42:07,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:42:07,251 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2023-11-06 22:42:07,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:07,309 INFO L225 Difference]: With dead ends: 18398 [2023-11-06 22:42:07,310 INFO L226 Difference]: Without dead ends: 13806 [2023-11-06 22:42:07,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:42:07,327 INFO L413 NwaCegarLoop]: 4403 mSDtfsCounter, 5093 mSDsluCounter, 17356 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5108 SdHoareTripleChecker+Valid, 21759 SdHoareTripleChecker+Invalid, 2553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:07,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5108 Valid, 21759 Invalid, 2553 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 22:42:07,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13806 states. [2023-11-06 22:42:08,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13806 to 11054. [2023-11-06 22:42:08,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11054 states, 10254 states have (on average 1.603471815876731) internal successors, (16442), 10289 states have internal predecessors, (16442), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2023-11-06 22:42:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11054 states to 11054 states and 17851 transitions. [2023-11-06 22:42:08,484 INFO L78 Accepts]: Start accepts. Automaton has 11054 states and 17851 transitions. Word has length 135 [2023-11-06 22:42:08,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:08,484 INFO L495 AbstractCegarLoop]: Abstraction has 11054 states and 17851 transitions. [2023-11-06 22:42:08,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:42:08,486 INFO L276 IsEmpty]: Start isEmpty. Operand 11054 states and 17851 transitions. [2023-11-06 22:42:08,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-06 22:42:08,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:08,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:08,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:42:08,498 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:08,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:08,499 INFO L85 PathProgramCache]: Analyzing trace with hash -844365079, now seen corresponding path program 1 times [2023-11-06 22:42:08,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:08,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047086676] [2023-11-06 22:42:08,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:08,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:08,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:42:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:08,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:42:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:08,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:42:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:08,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:42:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:08,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 22:42:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:08,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:08,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047086676] [2023-11-06 22:42:08,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047086676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:08,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:08,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:42:08,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390566009] [2023-11-06 22:42:08,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:08,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:42:08,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:08,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:42:08,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:42:08,779 INFO L87 Difference]: Start difference. First operand 11054 states and 17851 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:42:12,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:12,605 INFO L93 Difference]: Finished difference Result 22862 states and 36753 transitions. [2023-11-06 22:42:12,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:42:12,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2023-11-06 22:42:12,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:12,667 INFO L225 Difference]: With dead ends: 22862 [2023-11-06 22:42:12,667 INFO L226 Difference]: Without dead ends: 13945 [2023-11-06 22:42:12,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:42:12,708 INFO L413 NwaCegarLoop]: 4196 mSDtfsCounter, 4794 mSDsluCounter, 16579 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4810 SdHoareTripleChecker+Valid, 20775 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:12,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4810 Valid, 20775 Invalid, 1323 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:42:12,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13945 states. [2023-11-06 22:42:13,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13945 to 11054. [2023-11-06 22:42:13,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11054 states, 10254 states have (on average 1.6002535595865028) internal successors, (16409), 10289 states have internal predecessors, (16409), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2023-11-06 22:42:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11054 states to 11054 states and 17818 transitions. [2023-11-06 22:42:13,907 INFO L78 Accepts]: Start accepts. Automaton has 11054 states and 17818 transitions. Word has length 135 [2023-11-06 22:42:13,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:13,908 INFO L495 AbstractCegarLoop]: Abstraction has 11054 states and 17818 transitions. [2023-11-06 22:42:13,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:42:13,908 INFO L276 IsEmpty]: Start isEmpty. Operand 11054 states and 17818 transitions. [2023-11-06 22:42:13,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-06 22:42:13,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:13,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:13,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:42:13,918 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:13,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:13,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1882949653, now seen corresponding path program 1 times [2023-11-06 22:42:13,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:13,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633499633] [2023-11-06 22:42:13,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:13,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:14,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:42:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:14,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:42:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:14,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:42:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:14,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:42:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:14,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 22:42:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:14,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:14,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:14,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633499633] [2023-11-06 22:42:14,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633499633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:14,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:14,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:42:14,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954340132] [2023-11-06 22:42:14,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:14,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:42:14,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:14,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:42:14,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:42:14,180 INFO L87 Difference]: Start difference. First operand 11054 states and 17818 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:42:20,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:20,770 INFO L93 Difference]: Finished difference Result 33847 states and 53816 transitions. [2023-11-06 22:42:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:42:20,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2023-11-06 22:42:20,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:20,869 INFO L225 Difference]: With dead ends: 33847 [2023-11-06 22:42:20,869 INFO L226 Difference]: Without dead ends: 24930 [2023-11-06 22:42:20,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:42:20,909 INFO L413 NwaCegarLoop]: 4403 mSDtfsCounter, 5085 mSDsluCounter, 17356 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5100 SdHoareTripleChecker+Valid, 21759 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:20,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5100 Valid, 21759 Invalid, 2515 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-06 22:42:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24930 states. [2023-11-06 22:42:23,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24930 to 19768. [2023-11-06 22:42:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19768 states, 18200 states have (on average 1.568186813186813) internal successors, (28541), 18267 states have internal predecessors, (28541), 1112 states have call successors, (1112), 391 states have call predecessors, (1112), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2023-11-06 22:42:23,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19768 states to 19768 states and 31556 transitions. [2023-11-06 22:42:23,599 INFO L78 Accepts]: Start accepts. Automaton has 19768 states and 31556 transitions. Word has length 135 [2023-11-06 22:42:23,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:23,600 INFO L495 AbstractCegarLoop]: Abstraction has 19768 states and 31556 transitions. [2023-11-06 22:42:23,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:42:23,600 INFO L276 IsEmpty]: Start isEmpty. Operand 19768 states and 31556 transitions. [2023-11-06 22:42:23,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-06 22:42:23,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:23,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:23,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:42:23,617 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:23,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:23,617 INFO L85 PathProgramCache]: Analyzing trace with hash 438852265, now seen corresponding path program 1 times [2023-11-06 22:42:23,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:23,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049545370] [2023-11-06 22:42:23,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:23,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:23,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:42:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:42:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:23,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:42:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:23,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:42:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:23,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 22:42:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:23,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:23,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049545370] [2023-11-06 22:42:23,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049545370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:23,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:23,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:42:23,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296966668] [2023-11-06 22:42:23,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:23,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:42:23,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:23,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:42:23,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:42:23,882 INFO L87 Difference]: Start difference. First operand 19768 states and 31556 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:42:39,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:39,022 INFO L93 Difference]: Finished difference Result 72559 states and 115090 transitions. [2023-11-06 22:42:39,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:42:39,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2023-11-06 22:42:39,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:39,312 INFO L225 Difference]: With dead ends: 72559 [2023-11-06 22:42:39,312 INFO L226 Difference]: Without dead ends: 54928 [2023-11-06 22:42:39,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:42:39,389 INFO L413 NwaCegarLoop]: 4401 mSDtfsCounter, 5414 mSDsluCounter, 17348 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5438 SdHoareTripleChecker+Valid, 21749 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:39,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5438 Valid, 21749 Invalid, 2498 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 2436 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-06 22:42:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54928 states. [2023-11-06 22:42:45,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54928 to 37065. [2023-11-06 22:42:45,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37065 states, 34025 states have (on average 1.5508302718589273) internal successors, (52767), 34156 states have internal predecessors, (52767), 2136 states have call successors, (2136), 775 states have call predecessors, (2136), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2023-11-06 22:42:46,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37065 states to 37065 states and 59352 transitions. [2023-11-06 22:42:46,074 INFO L78 Accepts]: Start accepts. Automaton has 37065 states and 59352 transitions. Word has length 135 [2023-11-06 22:42:46,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:46,075 INFO L495 AbstractCegarLoop]: Abstraction has 37065 states and 59352 transitions. [2023-11-06 22:42:46,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:42:46,075 INFO L276 IsEmpty]: Start isEmpty. Operand 37065 states and 59352 transitions. [2023-11-06 22:42:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-06 22:42:46,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:46,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:46,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:42:46,105 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:46,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:46,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1703008213, now seen corresponding path program 1 times [2023-11-06 22:42:46,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:46,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854361152] [2023-11-06 22:42:46,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:46,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:46,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:42:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:46,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:42:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:46,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:42:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:46,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:42:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:46,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 22:42:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:46,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:46,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854361152] [2023-11-06 22:42:46,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854361152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:46,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:46,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:42:46,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886483809] [2023-11-06 22:42:46,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:46,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:42:46,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:46,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:42:46,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:42:46,557 INFO L87 Difference]: Start difference. First operand 37065 states and 59352 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:43:13,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:13,628 INFO L93 Difference]: Finished difference Result 140126 states and 224504 transitions. [2023-11-06 22:43:13,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:43:13,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2023-11-06 22:43:13,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:14,301 INFO L225 Difference]: With dead ends: 140126 [2023-11-06 22:43:14,301 INFO L226 Difference]: Without dead ends: 105198 [2023-11-06 22:43:14,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:43:14,471 INFO L413 NwaCegarLoop]: 4247 mSDtfsCounter, 5225 mSDsluCounter, 16850 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5239 SdHoareTripleChecker+Valid, 21097 SdHoareTripleChecker+Invalid, 2754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:14,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5239 Valid, 21097 Invalid, 2754 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-06 22:43:14,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105198 states.