./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.13.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761b748b-e628-438e-98ee-8d23957255eb/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761b748b-e628-438e-98ee-8d23957255eb/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761b748b-e628-438e-98ee-8d23957255eb/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761b748b-e628-438e-98ee-8d23957255eb/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.13.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761b748b-e628-438e-98ee-8d23957255eb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761b748b-e628-438e-98ee-8d23957255eb/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b2c6a3c4af8091017033117c21d8fbc40cee2009788b890a114045d77587077 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:40:26,456 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:40:26,516 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761b748b-e628-438e-98ee-8d23957255eb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:40:26,520 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:40:26,521 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:40:26,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:40:26,545 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:40:26,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:40:26,547 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:40:26,547 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:40:26,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:40:26,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:40:26,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:40:26,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:40:26,550 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:40:26,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:40:26,551 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:40:26,552 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:40:26,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:40:26,553 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:40:26,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:40:26,554 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:40:26,554 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:40:26,555 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:40:26,555 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:40:26,555 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:40:26,556 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:40:26,556 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:40:26,557 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:40:26,557 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:40:26,557 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:40:26,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:40:26,558 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:40:26,558 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:40:26,558 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:40:26,558 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:40:26,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:40:26,559 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:40:26,559 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:40:26,559 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:40:26,559 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:40:26,560 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:40:26,560 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_761b748b-e628-438e-98ee-8d23957255eb/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761b748b-e628-438e-98ee-8d23957255eb/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2c6a3c4af8091017033117c21d8fbc40cee2009788b890a114045d77587077 [2023-11-29 02:40:26,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:40:26,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:40:26,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:40:26,805 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:40:26,805 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:40:26,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761b748b-e628-438e-98ee-8d23957255eb/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/systemc/token_ring.13.cil-1.c [2023-11-29 02:40:29,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:40:29,762 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:40:29,763 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761b748b-e628-438e-98ee-8d23957255eb/sv-benchmarks/c/systemc/token_ring.13.cil-1.c [2023-11-29 02:40:29,779 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761b748b-e628-438e-98ee-8d23957255eb/bin/uautomizer-verify-BQ2R08f2Ya/data/69f541171/4d46b0fdb69d49e5a3110af9fb6349f9/FLAG2776f835a [2023-11-29 02:40:29,791 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761b748b-e628-438e-98ee-8d23957255eb/bin/uautomizer-verify-BQ2R08f2Ya/data/69f541171/4d46b0fdb69d49e5a3110af9fb6349f9 [2023-11-29 02:40:29,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:40:29,795 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:40:29,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:40:29,796 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:40:29,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:40:29,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:40:29" (1/1) ... [2023-11-29 02:40:29,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b9a93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:29, skipping insertion in model container [2023-11-29 02:40:29,802 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:40:29" (1/1) ... [2023-11-29 02:40:29,864 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:40:29,977 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_761b748b-e628-438e-98ee-8d23957255eb/sv-benchmarks/c/systemc/token_ring.13.cil-1.c[671,684] [2023-11-29 02:40:30,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:40:30,127 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:40:30,139 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_761b748b-e628-438e-98ee-8d23957255eb/sv-benchmarks/c/systemc/token_ring.13.cil-1.c[671,684] [2023-11-29 02:40:30,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:40:30,229 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:40:30,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:30 WrapperNode [2023-11-29 02:40:30,230 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:40:30,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:40:30,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:40:30,232 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:40:30,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:30" (1/1) ... [2023-11-29 02:40:30,251 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:30" (1/1) ... [2023-11-29 02:40:30,288 INFO L138 Inliner]: procedures = 54, calls = 71, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 945 [2023-11-29 02:40:30,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:40:30,289 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:40:30,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:40:30,289 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:40:30,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:30" (1/1) ... [2023-11-29 02:40:30,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:30" (1/1) ... [2023-11-29 02:40:30,304 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:30" (1/1) ... [2023-11-29 02:40:30,325 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 02:40:30,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:30" (1/1) ... [2023-11-29 02:40:30,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:30" (1/1) ... [2023-11-29 02:40:30,344 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:30" (1/1) ... [2023-11-29 02:40:30,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:30" (1/1) ... [2023-11-29 02:40:30,365 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:30" (1/1) ... [2023-11-29 02:40:30,370 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:30" (1/1) ... [2023-11-29 02:40:30,377 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:40:30,378 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:40:30,378 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:40:30,378 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:40:30,379 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:30" (1/1) ... [2023-11-29 02:40:30,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:40:30,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761b748b-e628-438e-98ee-8d23957255eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:40:30,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761b748b-e628-438e-98ee-8d23957255eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:40:30,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_761b748b-e628-438e-98ee-8d23957255eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:40:30,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:40:30,452 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-29 02:40:30,452 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-29 02:40:30,452 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-29 02:40:30,452 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-29 02:40:30,453 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-29 02:40:30,453 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-29 02:40:30,453 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-29 02:40:30,453 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-29 02:40:30,453 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-29 02:40:30,453 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-29 02:40:30,454 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-29 02:40:30,454 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-29 02:40:30,454 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-29 02:40:30,454 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-29 02:40:30,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:40:30,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:40:30,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:40:30,572 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:40:30,574 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:40:31,306 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:40:31,382 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:40:31,382 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-29 02:40:31,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:40:31 BoogieIcfgContainer [2023-11-29 02:40:31,383 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:40:31,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:40:31,385 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:40:31,388 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:40:31,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:40:29" (1/3) ... [2023-11-29 02:40:31,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b775941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:40:31, skipping insertion in model container [2023-11-29 02:40:31,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:30" (2/3) ... [2023-11-29 02:40:31,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b775941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:40:31, skipping insertion in model container [2023-11-29 02:40:31,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:40:31" (3/3) ... [2023-11-29 02:40:31,391 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.13.cil-1.c [2023-11-29 02:40:31,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:40:31,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:40:31,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:40:31,470 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@41630130, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:40:31,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:40:31,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 379 states, 341 states have (on average 1.7419354838709677) internal successors, (594), 345 states have internal predecessors, (594), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-29 02:40:31,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 02:40:31,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:31,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:40:31,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:31,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:31,500 INFO L85 PathProgramCache]: Analyzing trace with hash -612656562, now seen corresponding path program 1 times [2023-11-29 02:40:31,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:31,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764101936] [2023-11-29 02:40:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:31,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:31,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:40:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:32,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:40:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:32,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:40:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:32,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:40:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:32,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 02:40:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:40:32,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:32,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764101936] [2023-11-29 02:40:32,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764101936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:32,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:32,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:40:32,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495934415] [2023-11-29 02:40:32,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:32,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:40:32,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:32,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:40:32,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:40:32,272 INFO L87 Difference]: Start difference. First operand has 379 states, 341 states have (on average 1.7419354838709677) internal successors, (594), 345 states have internal predecessors, (594), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:40:36,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:36,198 INFO L93 Difference]: Finished difference Result 935 states and 1629 transitions. [2023-11-29 02:40:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:40:36,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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 171 [2023-11-29 02:40:36,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:36,219 INFO L225 Difference]: With dead ends: 935 [2023-11-29 02:40:36,219 INFO L226 Difference]: Without dead ends: 564 [2023-11-29 02:40:36,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:40:36,229 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1257 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 2307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:36,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 1257 Invalid, 2307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 02:40:36,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-11-29 02:40:36,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 378. [2023-11-29 02:40:36,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 342 states have (on average 1.6374269005847952) internal successors, (560), 344 states have internal predecessors, (560), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-29 02:40:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 616 transitions. [2023-11-29 02:40:36,315 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 616 transitions. Word has length 171 [2023-11-29 02:40:36,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:36,316 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 616 transitions. [2023-11-29 02:40:36,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:40:36,316 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 616 transitions. [2023-11-29 02:40:36,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 02:40:36,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:36,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:40:36,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:40:36,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:36,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:36,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2049824146, now seen corresponding path program 1 times [2023-11-29 02:40:36,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:36,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760103312] [2023-11-29 02:40:36,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:36,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:36,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:40:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:36,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:40:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:36,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:40:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:36,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:40:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:36,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 02:40:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:40:36,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:36,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760103312] [2023-11-29 02:40:36,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760103312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:36,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:36,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:40:36,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889898382] [2023-11-29 02:40:36,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:36,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:40:36,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:36,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:40:36,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:40:36,738 INFO L87 Difference]: Start difference. First operand 378 states and 616 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 4 states have internal predecessors, (160), 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) [2023-11-29 02:40:40,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:40,562 INFO L93 Difference]: Finished difference Result 1401 states and 2328 transitions. [2023-11-29 02:40:40,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:40:40,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 4 states have internal predecessors, (160), 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 171 [2023-11-29 02:40:40,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:40,568 INFO L225 Difference]: With dead ends: 1401 [2023-11-29 02:40:40,568 INFO L226 Difference]: Without dead ends: 1042 [2023-11-29 02:40:40,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:40:40,571 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1602 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:40,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 1170 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 02:40:40,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2023-11-29 02:40:40,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 757. [2023-11-29 02:40:40,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 692 states have (on average 1.6459537572254335) internal successors, (1139), 695 states have internal predecessors, (1139), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2023-11-29 02:40:40,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1242 transitions. [2023-11-29 02:40:40,657 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1242 transitions. Word has length 171 [2023-11-29 02:40:40,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:40,658 INFO L495 AbstractCegarLoop]: Abstraction has 757 states and 1242 transitions. [2023-11-29 02:40:40,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 4 states have internal predecessors, (160), 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) [2023-11-29 02:40:40,659 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1242 transitions. [2023-11-29 02:40:40,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 02:40:40,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:40,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:40:40,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:40:40,663 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:40,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1240037874, now seen corresponding path program 1 times [2023-11-29 02:40:40,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:40,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165856066] [2023-11-29 02:40:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:40,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:40,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:40:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:40,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:40:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:40,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:40:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:40,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:40:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:40,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 02:40:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:40:40,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:40,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165856066] [2023-11-29 02:40:40,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165856066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:40,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:40,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:40:40,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549172019] [2023-11-29 02:40:40,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:40,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:40:40,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:40,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:40:40,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:40:40,989 INFO L87 Difference]: Start difference. First operand 757 states and 1242 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:40:45,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:45,854 INFO L93 Difference]: Finished difference Result 2322 states and 3864 transitions. [2023-11-29 02:40:45,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:40:45,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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 171 [2023-11-29 02:40:45,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:45,868 INFO L225 Difference]: With dead ends: 2322 [2023-11-29 02:40:45,869 INFO L226 Difference]: Without dead ends: 1584 [2023-11-29 02:40:45,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:40:45,872 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 1649 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 4008 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 4075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:45,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1669 Valid, 2236 Invalid, 4075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4008 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 02:40:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2023-11-29 02:40:45,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1107. [2023-11-29 02:40:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1013 states have (on average 1.6386969397828233) internal successors, (1660), 1017 states have internal predecessors, (1660), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-11-29 02:40:45,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1809 transitions. [2023-11-29 02:40:45,960 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1809 transitions. Word has length 171 [2023-11-29 02:40:45,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:45,960 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 1809 transitions. [2023-11-29 02:40:45,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:40:45,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1809 transitions. [2023-11-29 02:40:45,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 02:40:45,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:45,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:40:45,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:40:45,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:45,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:45,964 INFO L85 PathProgramCache]: Analyzing trace with hash -854175472, now seen corresponding path program 1 times [2023-11-29 02:40:45,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:45,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047623820] [2023-11-29 02:40:45,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:45,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:46,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:40:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:46,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:40:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:46,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:40:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:46,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:40:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:46,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 02:40:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:40:46,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:46,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047623820] [2023-11-29 02:40:46,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047623820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:46,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:46,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:40:46,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172907550] [2023-11-29 02:40:46,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:46,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:40:46,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:46,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:40:46,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:40:46,322 INFO L87 Difference]: Start difference. First operand 1107 states and 1809 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:40:51,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:51,110 INFO L93 Difference]: Finished difference Result 3672 states and 6101 transitions. [2023-11-29 02:40:51,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:40:51,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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 171 [2023-11-29 02:40:51,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:51,124 INFO L225 Difference]: With dead ends: 3672 [2023-11-29 02:40:51,124 INFO L226 Difference]: Without dead ends: 2584 [2023-11-29 02:40:51,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:40:51,128 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1643 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3987 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 4056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:51,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 2234 Invalid, 4056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3987 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 02:40:51,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2023-11-29 02:40:51,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1811. [2023-11-29 02:40:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1659 states have (on average 1.6329113924050633) internal successors, (2709), 1665 states have internal predecessors, (2709), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-11-29 02:40:51,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2954 transitions. [2023-11-29 02:40:51,262 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2954 transitions. Word has length 171 [2023-11-29 02:40:51,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:51,263 INFO L495 AbstractCegarLoop]: Abstraction has 1811 states and 2954 transitions. [2023-11-29 02:40:51,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:40:51,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2954 transitions. [2023-11-29 02:40:51,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 02:40:51,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:51,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:40:51,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:40:51,265 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:51,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:51,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1076950162, now seen corresponding path program 1 times [2023-11-29 02:40:51,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:51,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708351136] [2023-11-29 02:40:51,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:51,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:51,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:40:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:51,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:40:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:51,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:40:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:51,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:40:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:51,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 02:40:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:40:51,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:51,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708351136] [2023-11-29 02:40:51,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708351136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:51,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:51,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:40:51,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028077774] [2023-11-29 02:40:51,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:51,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:40:51,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:51,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:40:51,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:40:51,567 INFO L87 Difference]: Start difference. First operand 1811 states and 2954 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:40:56,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:56,476 INFO L93 Difference]: Finished difference Result 6266 states and 10374 transitions. [2023-11-29 02:40:56,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:40:56,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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 171 [2023-11-29 02:40:56,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:56,503 INFO L225 Difference]: With dead ends: 6266 [2023-11-29 02:40:56,504 INFO L226 Difference]: Without dead ends: 4474 [2023-11-29 02:40:56,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:40:56,511 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1642 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3974 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 4043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:56,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 2234 Invalid, 4043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3974 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 02:40:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4474 states. [2023-11-29 02:40:56,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4474 to 3220. [2023-11-29 02:40:56,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3220 states, 2952 states have (on average 1.6283875338753389) internal successors, (4807), 2962 states have internal predecessors, (4807), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2023-11-29 02:40:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 5250 transitions. [2023-11-29 02:40:56,714 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 5250 transitions. Word has length 171 [2023-11-29 02:40:56,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:56,714 INFO L495 AbstractCegarLoop]: Abstraction has 3220 states and 5250 transitions. [2023-11-29 02:40:56,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:40:56,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 5250 transitions. [2023-11-29 02:40:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 02:40:56,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:56,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:40:56,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:40:56,720 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:56,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:56,720 INFO L85 PathProgramCache]: Analyzing trace with hash -246228784, now seen corresponding path program 1 times [2023-11-29 02:40:56,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:56,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920621181] [2023-11-29 02:40:56,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:56,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:56,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:40:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:56,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:40:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:57,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:40:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:57,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:40:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:57,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 02:40:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:40:57,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:57,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920621181] [2023-11-29 02:40:57,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920621181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:57,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:57,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:40:57,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882303425] [2023-11-29 02:40:57,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:57,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:40:57,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:57,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:40:57,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:40:57,089 INFO L87 Difference]: Start difference. First operand 3220 states and 5250 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:41:01,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:01,977 INFO L93 Difference]: Finished difference Result 11453 states and 18936 transitions. [2023-11-29 02:41:01,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:41:01,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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 171 [2023-11-29 02:41:01,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:02,011 INFO L225 Difference]: With dead ends: 11453 [2023-11-29 02:41:02,011 INFO L226 Difference]: Without dead ends: 8252 [2023-11-29 02:41:02,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:41:02,025 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1641 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3961 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 4030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:02,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1661 Valid, 2234 Invalid, 4030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3961 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 02:41:02,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8252 states. [2023-11-29 02:41:02,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8252 to 6045. [2023-11-29 02:41:02,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6045 states, 5545 states have (on average 1.6254283137962129) internal successors, (9013), 5563 states have internal predecessors, (9013), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-11-29 02:41:02,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6045 states to 6045 states and 9870 transitions. [2023-11-29 02:41:02,344 INFO L78 Accepts]: Start accepts. Automaton has 6045 states and 9870 transitions. Word has length 171 [2023-11-29 02:41:02,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:02,344 INFO L495 AbstractCegarLoop]: Abstraction has 6045 states and 9870 transitions. [2023-11-29 02:41:02,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:41:02,345 INFO L276 IsEmpty]: Start isEmpty. Operand 6045 states and 9870 transitions. [2023-11-29 02:41:02,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 02:41:02,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:02,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:41:02,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:41:02,353 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:02,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:02,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1650750674, now seen corresponding path program 1 times [2023-11-29 02:41:02,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:02,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309290699] [2023-11-29 02:41:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:02,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:02,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:41:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:02,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:41:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:02,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:41:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:02,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:41:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:02,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 02:41:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:41:02,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:02,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309290699] [2023-11-29 02:41:02,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309290699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:02,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:02,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:41:02,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496546133] [2023-11-29 02:41:02,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:02,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:41:02,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:02,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:41:02,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:41:02,695 INFO L87 Difference]: Start difference. First operand 6045 states and 9870 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:41:07,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:07,194 INFO L93 Difference]: Finished difference Result 21828 states and 36122 transitions. [2023-11-29 02:41:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:41:07,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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 171 [2023-11-29 02:41:07,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:07,262 INFO L225 Difference]: With dead ends: 21828 [2023-11-29 02:41:07,263 INFO L226 Difference]: Without dead ends: 15802 [2023-11-29 02:41:07,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:41:07,285 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 1752 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 3286 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 3397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:07,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 1444 Invalid, 3397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3286 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 02:41:07,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15802 states. [2023-11-29 02:41:07,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15802 to 11710. [2023-11-29 02:41:07,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11710 states, 10746 states have (on average 1.6235808672994603) internal successors, (17447), 10780 states have internal predecessors, (17447), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2023-11-29 02:41:07,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11710 states to 11710 states and 19186 transitions. [2023-11-29 02:41:07,988 INFO L78 Accepts]: Start accepts. Automaton has 11710 states and 19186 transitions. Word has length 171 [2023-11-29 02:41:07,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:07,989 INFO L495 AbstractCegarLoop]: Abstraction has 11710 states and 19186 transitions. [2023-11-29 02:41:07,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:41:07,990 INFO L276 IsEmpty]: Start isEmpty. Operand 11710 states and 19186 transitions. [2023-11-29 02:41:08,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 02:41:08,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:08,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:41:08,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:41:08,001 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:08,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:08,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1989038224, now seen corresponding path program 1 times [2023-11-29 02:41:08,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:08,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964354886] [2023-11-29 02:41:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:08,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:08,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:41:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:08,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:41:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:41:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:08,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:41:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:08,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 02:41:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:08,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:41:08,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:08,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964354886] [2023-11-29 02:41:08,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964354886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:08,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:08,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:41:08,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407025825] [2023-11-29 02:41:08,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:08,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:41:08,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:08,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:41:08,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:41:08,378 INFO L87 Difference]: Start difference. First operand 11710 states and 19186 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:41:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:13,481 INFO L93 Difference]: Finished difference Result 42579 states and 70688 transitions. [2023-11-29 02:41:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:41:13,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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 171 [2023-11-29 02:41:13,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:13,568 INFO L225 Difference]: With dead ends: 42579 [2023-11-29 02:41:13,568 INFO L226 Difference]: Without dead ends: 30888 [2023-11-29 02:41:13,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:41:13,602 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1639 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3935 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:13,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 2234 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3935 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 02:41:13,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30888 states. [2023-11-29 02:41:14,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30888 to 23071. [2023-11-29 02:41:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23071 states, 21179 states have (on average 1.622408990037301) internal successors, (34361), 21245 states have internal predecessors, (34361), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2023-11-29 02:41:14,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23071 states to 23071 states and 38026 transitions. [2023-11-29 02:41:14,812 INFO L78 Accepts]: Start accepts. Automaton has 23071 states and 38026 transitions. Word has length 171 [2023-11-29 02:41:14,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:14,812 INFO L495 AbstractCegarLoop]: Abstraction has 23071 states and 38026 transitions. [2023-11-29 02:41:14,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:41:14,813 INFO L276 IsEmpty]: Start isEmpty. Operand 23071 states and 38026 transitions. [2023-11-29 02:41:14,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 02:41:14,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:14,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:41:14,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:41:14,834 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:14,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:14,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1879374574, now seen corresponding path program 1 times [2023-11-29 02:41:14,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:14,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146074263] [2023-11-29 02:41:14,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:14,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:14,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:41:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:15,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:41:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:15,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:41:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:15,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:41:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:15,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 02:41:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:41:15,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:15,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146074263] [2023-11-29 02:41:15,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146074263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:15,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:15,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:41:15,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320274292] [2023-11-29 02:41:15,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:15,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:41:15,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:15,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:41:15,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:41:15,151 INFO L87 Difference]: Start difference. First operand 23071 states and 38026 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:41:20,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:20,885 INFO L93 Difference]: Finished difference Result 84082 states and 140422 transitions. [2023-11-29 02:41:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:41:20,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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 171 [2023-11-29 02:41:20,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:21,101 INFO L225 Difference]: With dead ends: 84082 [2023-11-29 02:41:21,101 INFO L226 Difference]: Without dead ends: 61030 [2023-11-29 02:41:21,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:41:21,147 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1638 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3922 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 3991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:21,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 2234 Invalid, 3991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3922 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 02:41:21,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61030 states. [2023-11-29 02:41:23,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61030 to 45856. [2023-11-29 02:41:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45856 states, 42108 states have (on average 1.621615844970077) internal successors, (68283), 42238 states have internal predecessors, (68283), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2023-11-29 02:41:23,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45856 states to 45856 states and 76286 transitions. [2023-11-29 02:41:23,413 INFO L78 Accepts]: Start accepts. Automaton has 45856 states and 76286 transitions. Word has length 171 [2023-11-29 02:41:23,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:23,414 INFO L495 AbstractCegarLoop]: Abstraction has 45856 states and 76286 transitions. [2023-11-29 02:41:23,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:41:23,414 INFO L276 IsEmpty]: Start isEmpty. Operand 45856 states and 76286 transitions. [2023-11-29 02:41:23,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 02:41:23,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:23,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:41:23,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:41:23,454 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:23,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:23,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1875163216, now seen corresponding path program 1 times [2023-11-29 02:41:23,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:23,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793915325] [2023-11-29 02:41:23,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:23,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:41:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:23,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:41:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:23,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:41:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:41:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:23,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 02:41:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:41:23,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:23,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793915325] [2023-11-29 02:41:23,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793915325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:23,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:23,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:41:23,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648743157] [2023-11-29 02:41:23,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:23,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:41:23,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:23,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:41:23,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:41:23,789 INFO L87 Difference]: Start difference. First operand 45856 states and 76286 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:41:31,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:31,216 INFO L93 Difference]: Finished difference Result 167089 states and 281740 transitions. [2023-11-29 02:41:31,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:41:31,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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 171 [2023-11-29 02:41:31,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:31,663 INFO L225 Difference]: With dead ends: 167089 [2023-11-29 02:41:31,663 INFO L226 Difference]: Without dead ends: 121252 [2023-11-29 02:41:31,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:41:31,820 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1643 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3904 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 3973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:31,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 2234 Invalid, 3973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3904 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 02:41:31,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121252 states. [2023-11-29 02:41:35,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121252 to 91553. [2023-11-29 02:41:35,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91553 states, 84093 states have (on average 1.6210267204166815) internal successors, (136317), 84351 states have internal predecessors, (136317), 5661 states have call successors, (5661), 1543 states have call predecessors, (5661), 1798 states have return successors, (12476), 5914 states have call predecessors, (12476), 5659 states have call successors, (12476) [2023-11-29 02:41:35,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91553 states to 91553 states and 154454 transitions. [2023-11-29 02:41:35,981 INFO L78 Accepts]: Start accepts. Automaton has 91553 states and 154454 transitions. Word has length 171 [2023-11-29 02:41:35,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:35,981 INFO L495 AbstractCegarLoop]: Abstraction has 91553 states and 154454 transitions. [2023-11-29 02:41:35,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:41:35,981 INFO L276 IsEmpty]: Start isEmpty. Operand 91553 states and 154454 transitions. [2023-11-29 02:41:36,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 02:41:36,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:36,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:41:36,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:41:36,045 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:36,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:36,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1719182674, now seen corresponding path program 1 times [2023-11-29 02:41:36,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:36,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385130298] [2023-11-29 02:41:36,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:36,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:41:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:36,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:41:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:36,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:41:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:36,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:41:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:36,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 02:41:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:41:36,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:36,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385130298] [2023-11-29 02:41:36,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385130298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:36,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:36,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:41:36,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210118373] [2023-11-29 02:41:36,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:36,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:41:36,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:36,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:41:36,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:41:36,343 INFO L87 Difference]: Start difference. First operand 91553 states and 154454 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:41:47,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:47,043 INFO L93 Difference]: Finished difference Result 332846 states and 569502 transitions. [2023-11-29 02:41:47,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:41:47,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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 171 [2023-11-29 02:41:47,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:48,239 INFO L225 Difference]: With dead ends: 332846 [2023-11-29 02:41:48,240 INFO L226 Difference]: Without dead ends: 241312 [2023-11-29 02:41:48,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:41:48,615 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1638 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3877 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 3946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:48,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 2234 Invalid, 3946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3877 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 02:41:48,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241312 states. [2023-11-29 02:41:56,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241312 to 183459. [2023-11-29 02:41:56,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183459 states, 168575 states have (on average 1.6211241287260862) internal successors, (273281), 169089 states have internal predecessors, (273281), 11293 states have call successors, (11293), 3079 states have call predecessors, (11293), 3590 states have return successors, (31486), 11802 states have call predecessors, (31486), 11291 states have call successors, (31486) [2023-11-29 02:41:57,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183459 states to 183459 states and 316060 transitions. [2023-11-29 02:41:57,536 INFO L78 Accepts]: Start accepts. Automaton has 183459 states and 316060 transitions. Word has length 171 [2023-11-29 02:41:57,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:57,536 INFO L495 AbstractCegarLoop]: Abstraction has 183459 states and 316060 transitions. [2023-11-29 02:41:57,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:41:57,537 INFO L276 IsEmpty]: Start isEmpty. Operand 183459 states and 316060 transitions. [2023-11-29 02:41:57,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 02:41:57,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:57,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:41:57,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:41:57,617 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:57,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:57,617 INFO L85 PathProgramCache]: Analyzing trace with hash -68687148, now seen corresponding path program 1 times [2023-11-29 02:41:57,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:57,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54619733] [2023-11-29 02:41:57,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:57,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:57,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:41:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:57,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:41:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:57,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:41:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:57,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:41:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:57,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 02:41:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:41:57,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:57,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54619733] [2023-11-29 02:41:57,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54619733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:57,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:57,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:41:57,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942353792] [2023-11-29 02:41:57,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:57,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:41:57,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:57,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:41:57,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:41:57,903 INFO L87 Difference]: Start difference. First operand 183459 states and 316060 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:42:14,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:14,780 INFO L93 Difference]: Finished difference Result 664878 states and 1163174 transitions. [2023-11-29 02:42:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:42:14,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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 171 [2023-11-29 02:42:14,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:17,207 INFO L225 Difference]: With dead ends: 664878 [2023-11-29 02:42:17,207 INFO L226 Difference]: Without dead ends: 481438 [2023-11-29 02:42:18,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:42:18,008 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1637 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3864 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 3933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:18,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1657 Valid, 2234 Invalid, 3933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3864 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 02:42:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481438 states. [2023-11-29 02:42:34,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481438 to 367780. [2023-11-29 02:42:34,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367780 states, 338048 states have (on average 1.6209857771677394) internal successors, (547971), 339074 states have internal predecessors, (547971), 22557 states have call successors, (22557), 6151 states have call predecessors, (22557), 7174 states have return successors, (82628), 23578 states have call predecessors, (82628), 22555 states have call successors, (82628) [2023-11-29 02:42:37,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367780 states to 367780 states and 653156 transitions. [2023-11-29 02:42:37,051 INFO L78 Accepts]: Start accepts. Automaton has 367780 states and 653156 transitions. Word has length 171 [2023-11-29 02:42:37,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:37,052 INFO L495 AbstractCegarLoop]: Abstraction has 367780 states and 653156 transitions. [2023-11-29 02:42:37,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:42:37,052 INFO L276 IsEmpty]: Start isEmpty. Operand 367780 states and 653156 transitions. [2023-11-29 02:42:37,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 02:42:37,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:37,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:42:37,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 02:42:37,453 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:37,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:37,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2090396946, now seen corresponding path program 1 times [2023-11-29 02:42:37,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:37,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772448471] [2023-11-29 02:42:37,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:37,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:37,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:42:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:37,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:42:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:42:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:42:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:37,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 02:42:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:42:37,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:37,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772448471] [2023-11-29 02:42:37,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772448471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:42:37,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:42:37,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:42:37,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590047208] [2023-11-29 02:42:37,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:42:37,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:42:37,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:37,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:42:37,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:42:37,735 INFO L87 Difference]: Start difference. First operand 367780 states and 653156 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:43:08,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:43:08,336 INFO L93 Difference]: Finished difference Result 1328941 states and 2402236 transitions. [2023-11-29 02:43:08,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:43:08,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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 171 [2023-11-29 02:43:08,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:43:13,678 INFO L225 Difference]: With dead ends: 1328941 [2023-11-29 02:43:13,679 INFO L226 Difference]: Without dead ends: 961180 [2023-11-29 02:43:15,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:43:15,777 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1636 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 3851 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 3920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:43:15,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1656 Valid, 2234 Invalid, 3920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3851 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 02:43:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961180 states. [2023-11-29 02:43:49,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961180 to 737445. [2023-11-29 02:43:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737445 states, 678017 states have (on average 1.6207336984175913) internal successors, (1098885), 680067 states have internal predecessors, (1098885), 45085 states have call successors, (45085), 12295 states have call predecessors, (45085), 14342 states have return successors, (224278), 47130 states have call predecessors, (224278), 45083 states have call successors, (224278) [2023-11-29 02:43:57,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737445 states to 737445 states and 1368248 transitions. [2023-11-29 02:43:57,235 INFO L78 Accepts]: Start accepts. Automaton has 737445 states and 1368248 transitions. Word has length 171 [2023-11-29 02:43:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:43:57,236 INFO L495 AbstractCegarLoop]: Abstraction has 737445 states and 1368248 transitions. [2023-11-29 02:43:57,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 02:43:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 737445 states and 1368248 transitions. [2023-11-29 02:43:57,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 02:43:57,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:43:57,545 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:43:57,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 02:43:57,546 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:43:57,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:43:57,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2134922476, now seen corresponding path program 1 times [2023-11-29 02:43:57,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:43:57,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486292476] [2023-11-29 02:43:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:43:57,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:43:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:43:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:57,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:43:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:57,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 02:43:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:57,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:43:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:57,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 02:43:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:43:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:43:57,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:43:57,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486292476] [2023-11-29 02:43:57,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486292476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:43:57,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:43:57,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:43:57,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789951414] [2023-11-29 02:43:57,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:43:57,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:43:57,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:43:57,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:43:57,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:43:57,880 INFO L87 Difference]: Start difference. First operand 737445 states and 1368248 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 5 states have internal predecessors, (160), 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)