./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.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_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/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_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/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_a1651140-5911-4024-9d53-c0251354a710/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 37139db5f2012b0b7a96ab437e26855d856636bc4064d013c0b416905ff6e54c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:05:13,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:05:13,856 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:05:13,862 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:05:13,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:05:13,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:05:13,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:05:13,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:05:13,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:05:13,892 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:05:13,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:05:13,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:05:13,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:05:13,894 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:05:13,895 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:05:13,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:05:13,896 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:05:13,896 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:05:13,897 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:05:13,897 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:05:13,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:05:13,898 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:05:13,899 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:05:13,899 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:05:13,900 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:05:13,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:05:13,900 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:05:13,901 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:05:13,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:05:13,902 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:05:13,902 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:05:13,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:05:13,903 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:05:13,903 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:05:13,903 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:05:13,904 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:05:13,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:05:13,904 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:05:13,904 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:05:13,904 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:05:13,904 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:05:13,905 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:05:13,905 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_a1651140-5911-4024-9d53-c0251354a710/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37139db5f2012b0b7a96ab437e26855d856636bc4064d013c0b416905ff6e54c [2023-11-29 01:05:14,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:05:14,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:05:14,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:05:14,161 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:05:14,161 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:05:14,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c [2023-11-29 01:05:16,945 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:05:17,150 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:05:17,151 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c [2023-11-29 01:05:17,164 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/data/e37c46d96/fb234ea15d6e49fd9900af43bc600fcf/FLAG19011c797 [2023-11-29 01:05:17,176 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/data/e37c46d96/fb234ea15d6e49fd9900af43bc600fcf [2023-11-29 01:05:17,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:05:17,179 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:05:17,180 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:05:17,180 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:05:17,185 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:05:17,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:05:17" (1/1) ... [2023-11-29 01:05:17,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc067ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:17, skipping insertion in model container [2023-11-29 01:05:17,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:05:17" (1/1) ... [2023-11-29 01:05:17,237 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:05:17,367 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_a1651140-5911-4024-9d53-c0251354a710/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[911,924] [2023-11-29 01:05:17,424 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_a1651140-5911-4024-9d53-c0251354a710/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[8416,8429] [2023-11-29 01:05:17,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:05:17,487 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:05:17,499 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_a1651140-5911-4024-9d53-c0251354a710/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[911,924] [2023-11-29 01:05:17,522 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_a1651140-5911-4024-9d53-c0251354a710/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[8416,8429] [2023-11-29 01:05:17,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:05:17,571 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:05:17,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:17 WrapperNode [2023-11-29 01:05:17,572 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:05:17,573 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:05:17,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:05:17,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:05:17,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:17" (1/1) ... [2023-11-29 01:05:17,591 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:17" (1/1) ... [2023-11-29 01:05:17,630 INFO L138 Inliner]: procedures = 63, calls = 73, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 628 [2023-11-29 01:05:17,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:05:17,631 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:05:17,631 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:05:17,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:05:17,644 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:17" (1/1) ... [2023-11-29 01:05:17,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:17" (1/1) ... [2023-11-29 01:05:17,648 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:17" (1/1) ... [2023-11-29 01:05:17,667 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 01:05:17,667 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:17" (1/1) ... [2023-11-29 01:05:17,667 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:17" (1/1) ... [2023-11-29 01:05:17,680 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:17" (1/1) ... [2023-11-29 01:05:17,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:17" (1/1) ... [2023-11-29 01:05:17,695 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:17" (1/1) ... [2023-11-29 01:05:17,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:17" (1/1) ... [2023-11-29 01:05:17,703 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:05:17,704 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:05:17,705 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:05:17,705 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:05:17,706 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:17" (1/1) ... [2023-11-29 01:05:17,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:05:17,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:17,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:05:17,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:05:17,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:05:17,764 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-29 01:05:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-29 01:05:17,764 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-29 01:05:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-29 01:05:17,764 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-29 01:05:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-29 01:05:17,765 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-29 01:05:17,765 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-29 01:05:17,765 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-29 01:05:17,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-29 01:05:17,765 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-29 01:05:17,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-29 01:05:17,766 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-29 01:05:17,766 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-29 01:05:17,766 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-29 01:05:17,766 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-29 01:05:17,766 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-29 01:05:17,766 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-29 01:05:17,766 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-29 01:05:17,767 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-29 01:05:17,767 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-29 01:05:17,767 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-29 01:05:17,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:05:17,767 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-29 01:05:17,767 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-29 01:05:17,767 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-29 01:05:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-29 01:05:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:05:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:05:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-29 01:05:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-29 01:05:17,859 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:05:17,861 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:05:18,390 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-11-29 01:05:18,391 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2023-11-29 01:05:18,448 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:05:18,509 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:05:18,509 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-29 01:05:18,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:05:18 BoogieIcfgContainer [2023-11-29 01:05:18,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:05:18,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:05:18,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:05:18,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:05:18,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:05:17" (1/3) ... [2023-11-29 01:05:18,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ade1c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:05:18, skipping insertion in model container [2023-11-29 01:05:18,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:05:17" (2/3) ... [2023-11-29 01:05:18,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ade1c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:05:18, skipping insertion in model container [2023-11-29 01:05:18,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:05:18" (3/3) ... [2023-11-29 01:05:18,519 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.04.cil-1.c [2023-11-29 01:05:18,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:05:18,540 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 01:05:18,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:05:18,607 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;@5a0c2942, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:05:18,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 01:05:18,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 268 states, 217 states have (on average 1.6682027649769586) internal successors, (362), 223 states have internal predecessors, (362), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-29 01:05:18,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 01:05:18,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:18,628 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] [2023-11-29 01:05:18,628 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:18,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:18,634 INFO L85 PathProgramCache]: Analyzing trace with hash 759238749, now seen corresponding path program 1 times [2023-11-29 01:05:18,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:18,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29203331] [2023-11-29 01:05:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:18,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:19,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:05:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:19,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:05:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:19,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:05:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:05:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:19,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:05:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:19,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 01:05:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:19,185 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 01:05:19,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:19,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29203331] [2023-11-29 01:05:19,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29203331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:19,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:19,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:05:19,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120058467] [2023-11-29 01:05:19,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:19,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:05:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:19,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:05:19,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:05:19,228 INFO L87 Difference]: Start difference. First operand has 268 states, 217 states have (on average 1.6682027649769586) internal successors, (362), 223 states have internal predecessors, (362), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 01:05:20,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:20,849 INFO L93 Difference]: Finished difference Result 690 states and 1108 transitions. [2023-11-29 01:05:20,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:05:20,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2023-11-29 01:05:20,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:20,867 INFO L225 Difference]: With dead ends: 690 [2023-11-29 01:05:20,867 INFO L226 Difference]: Without dead ends: 434 [2023-11-29 01:05:20,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:05:20,876 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 802 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:20,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1356 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:05:20,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-11-29 01:05:20,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 368. [2023-11-29 01:05:20,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 296 states have (on average 1.5405405405405406) internal successors, (456), 303 states have internal predecessors, (456), 47 states have call successors, (47), 21 states have call predecessors, (47), 23 states have return successors, (56), 46 states have call predecessors, (56), 45 states have call successors, (56) [2023-11-29 01:05:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 559 transitions. [2023-11-29 01:05:20,975 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 559 transitions. Word has length 57 [2023-11-29 01:05:20,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:20,975 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 559 transitions. [2023-11-29 01:05:20,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 01:05:20,976 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 559 transitions. [2023-11-29 01:05:20,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 01:05:20,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:20,981 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] [2023-11-29 01:05:20,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:05:20,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:20,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:20,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1652725087, now seen corresponding path program 1 times [2023-11-29 01:05:20,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:20,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950186281] [2023-11-29 01:05:20,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:20,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:21,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:21,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:05:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:21,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:05:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:05:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:21,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:05:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:21,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:05:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:21,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 01:05:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:21,115 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 01:05:21,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:21,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950186281] [2023-11-29 01:05:21,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950186281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:21,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:21,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:05:21,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462738330] [2023-11-29 01:05:21,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:21,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:05:21,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:21,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:05:21,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:05:21,119 INFO L87 Difference]: Start difference. First operand 368 states and 559 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 01:05:22,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:22,030 INFO L93 Difference]: Finished difference Result 768 states and 1145 transitions. [2023-11-29 01:05:22,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:05:22,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 57 [2023-11-29 01:05:22,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:22,036 INFO L225 Difference]: With dead ends: 768 [2023-11-29 01:05:22,036 INFO L226 Difference]: Without dead ends: 576 [2023-11-29 01:05:22,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:05:22,039 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 1076 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:22,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 826 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:05:22,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-11-29 01:05:22,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 538. [2023-11-29 01:05:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 429 states have (on average 1.508158508158508) internal successors, (647), 439 states have internal predecessors, (647), 67 states have call successors, (67), 35 states have call predecessors, (67), 40 states have return successors, (82), 66 states have call predecessors, (82), 65 states have call successors, (82) [2023-11-29 01:05:22,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 796 transitions. [2023-11-29 01:05:22,104 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 796 transitions. Word has length 57 [2023-11-29 01:05:22,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:22,105 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 796 transitions. [2023-11-29 01:05:22,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 01:05:22,105 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 796 transitions. [2023-11-29 01:05:22,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 01:05:22,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:22,108 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] [2023-11-29 01:05:22,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:05:22,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:22,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:22,109 INFO L85 PathProgramCache]: Analyzing trace with hash -178299430, now seen corresponding path program 1 times [2023-11-29 01:05:22,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:22,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350130574] [2023-11-29 01:05:22,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:22,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:22,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:22,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:05:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:05:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:22,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:05:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:22,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:05:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:22,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 01:05:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:22,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 01:05:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:22,259 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 01:05:22,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:22,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350130574] [2023-11-29 01:05:22,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350130574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:22,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:22,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:05:22,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727057035] [2023-11-29 01:05:22,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:22,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:05:22,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:22,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:05:22,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:05:22,262 INFO L87 Difference]: Start difference. First operand 538 states and 796 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 01:05:23,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:23,232 INFO L93 Difference]: Finished difference Result 938 states and 1377 transitions. [2023-11-29 01:05:23,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:05:23,233 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-11-29 01:05:23,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:23,237 INFO L225 Difference]: With dead ends: 938 [2023-11-29 01:05:23,238 INFO L226 Difference]: Without dead ends: 576 [2023-11-29 01:05:23,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:05:23,241 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 329 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:23,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 1427 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:05:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-11-29 01:05:23,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 546. [2023-11-29 01:05:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 435 states have (on average 1.4965517241379311) internal successors, (651), 445 states have internal predecessors, (651), 67 states have call successors, (67), 35 states have call predecessors, (67), 42 states have return successors, (84), 68 states have call predecessors, (84), 65 states have call successors, (84) [2023-11-29 01:05:23,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 802 transitions. [2023-11-29 01:05:23,284 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 802 transitions. Word has length 58 [2023-11-29 01:05:23,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:23,285 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 802 transitions. [2023-11-29 01:05:23,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 01:05:23,285 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 802 transitions. [2023-11-29 01:05:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 01:05:23,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:23,288 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] [2023-11-29 01:05:23,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:05:23,288 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:23,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:23,289 INFO L85 PathProgramCache]: Analyzing trace with hash -250685988, now seen corresponding path program 1 times [2023-11-29 01:05:23,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:23,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517656274] [2023-11-29 01:05:23,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:23,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:23,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:23,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:05:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:23,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:05:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:23,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:05:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:23,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:05:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:23,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 01:05:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:23,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 01:05:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:23,435 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 01:05:23,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517656274] [2023-11-29 01:05:23,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517656274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:23,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:23,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:05:23,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212710444] [2023-11-29 01:05:23,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:23,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:05:23,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:23,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:05:23,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:05:23,437 INFO L87 Difference]: Start difference. First operand 546 states and 802 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 01:05:25,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:25,496 INFO L93 Difference]: Finished difference Result 1878 states and 2784 transitions. [2023-11-29 01:05:25,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 01:05:25,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-11-29 01:05:25,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:25,502 INFO L225 Difference]: With dead ends: 1878 [2023-11-29 01:05:25,502 INFO L226 Difference]: Without dead ends: 766 [2023-11-29 01:05:25,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 01:05:25,507 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1486 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 2367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:25,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1633 Invalid, 2367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:05:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2023-11-29 01:05:25,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 690. [2023-11-29 01:05:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 540 states have (on average 1.45) internal successors, (783), 553 states have internal predecessors, (783), 87 states have call successors, (87), 49 states have call predecessors, (87), 61 states have return successors, (120), 90 states have call predecessors, (120), 85 states have call successors, (120) [2023-11-29 01:05:25,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 990 transitions. [2023-11-29 01:05:25,572 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 990 transitions. Word has length 58 [2023-11-29 01:05:25,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:25,572 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 990 transitions. [2023-11-29 01:05:25,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 01:05:25,573 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 990 transitions. [2023-11-29 01:05:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 01:05:25,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:25,574 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] [2023-11-29 01:05:25,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:05:25,575 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:25,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:25,575 INFO L85 PathProgramCache]: Analyzing trace with hash -314677635, now seen corresponding path program 1 times [2023-11-29 01:05:25,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:25,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810410275] [2023-11-29 01:05:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:25,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:25,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:25,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:05:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:25,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:05:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:25,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:05:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:25,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:05:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:25,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 01:05:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:25,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 01:05:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:25,721 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 01:05:25,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:25,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810410275] [2023-11-29 01:05:25,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810410275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:25,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:25,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:05:25,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034305223] [2023-11-29 01:05:25,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:25,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:05:25,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:25,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:05:25,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:05:25,723 INFO L87 Difference]: Start difference. First operand 690 states and 990 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 01:05:26,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:26,635 INFO L93 Difference]: Finished difference Result 1520 states and 2196 transitions. [2023-11-29 01:05:26,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:05:26,636 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 59 [2023-11-29 01:05:26,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:26,637 INFO L225 Difference]: With dead ends: 1520 [2023-11-29 01:05:26,637 INFO L226 Difference]: Without dead ends: 163 [2023-11-29 01:05:26,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:05:26,643 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 860 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:26,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 922 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:05:26,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-29 01:05:26,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-11-29 01:05:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 138 states have (on average 1.5724637681159421) internal successors, (217), 139 states have internal predecessors, (217), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 01:05:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2023-11-29 01:05:26,655 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 59 [2023-11-29 01:05:26,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:26,655 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2023-11-29 01:05:26,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 01:05:26,656 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2023-11-29 01:05:26,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:05:26,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:26,657 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] [2023-11-29 01:05:26,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:05:26,657 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:26,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:26,658 INFO L85 PathProgramCache]: Analyzing trace with hash -468735642, now seen corresponding path program 1 times [2023-11-29 01:05:26,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:26,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227549987] [2023-11-29 01:05:26,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:26,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:26,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:05:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:26,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:05:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:26,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:05:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:26,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 01:05:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:05:26,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:26,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227549987] [2023-11-29 01:05:26,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227549987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:26,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:26,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:05:26,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582847714] [2023-11-29 01:05:26,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:26,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:05:26,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:26,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:05:26,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:05:26,754 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:27,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:27,375 INFO L93 Difference]: Finished difference Result 367 states and 580 transitions. [2023-11-29 01:05:27,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:05:27,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-11-29 01:05:27,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:27,377 INFO L225 Difference]: With dead ends: 367 [2023-11-29 01:05:27,377 INFO L226 Difference]: Without dead ends: 213 [2023-11-29 01:05:27,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:05:27,379 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 405 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:27,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 294 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:05:27,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-29 01:05:27,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 163. [2023-11-29 01:05:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 138 states have (on average 1.565217391304348) internal successors, (216), 139 states have internal predecessors, (216), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 01:05:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 252 transitions. [2023-11-29 01:05:27,394 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 252 transitions. Word has length 81 [2023-11-29 01:05:27,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:27,395 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 252 transitions. [2023-11-29 01:05:27,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:27,395 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 252 transitions. [2023-11-29 01:05:27,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:05:27,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:27,396 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] [2023-11-29 01:05:27,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:05:27,397 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:27,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:27,397 INFO L85 PathProgramCache]: Analyzing trace with hash 498615012, now seen corresponding path program 1 times [2023-11-29 01:05:27,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:27,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785747617] [2023-11-29 01:05:27,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:27,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:27,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:27,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:05:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:27,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:05:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:27,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:05:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:27,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 01:05:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:27,530 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 01:05:27,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:27,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785747617] [2023-11-29 01:05:27,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785747617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:27,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:27,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:05:27,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173469424] [2023-11-29 01:05:27,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:27,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:05:27,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:27,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:05:27,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:05:27,532 INFO L87 Difference]: Start difference. First operand 163 states and 252 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:28,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:28,515 INFO L93 Difference]: Finished difference Result 570 states and 906 transitions. [2023-11-29 01:05:28,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:05:28,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-11-29 01:05:28,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:28,518 INFO L225 Difference]: With dead ends: 570 [2023-11-29 01:05:28,519 INFO L226 Difference]: Without dead ends: 418 [2023-11-29 01:05:28,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:05:28,520 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 605 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:28,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 491 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:05:28,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-11-29 01:05:28,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 319. [2023-11-29 01:05:28,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 274 states have (on average 1.5766423357664234) internal successors, (432), 276 states have internal predecessors, (432), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2023-11-29 01:05:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 497 transitions. [2023-11-29 01:05:28,549 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 497 transitions. Word has length 81 [2023-11-29 01:05:28,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:28,550 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 497 transitions. [2023-11-29 01:05:28,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:28,550 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 497 transitions. [2023-11-29 01:05:28,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:05:28,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:28,551 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] [2023-11-29 01:05:28,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:05:28,552 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:28,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:28,552 INFO L85 PathProgramCache]: Analyzing trace with hash -919184092, now seen corresponding path program 1 times [2023-11-29 01:05:28,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:28,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246597903] [2023-11-29 01:05:28,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:28,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:28,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:28,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:05:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:28,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:05:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:28,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:05:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:28,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 01:05:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:28,707 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 01:05:28,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:28,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246597903] [2023-11-29 01:05:28,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246597903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:28,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:28,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:05:28,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028648415] [2023-11-29 01:05:28,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:28,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:05:28,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:28,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:05:28,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:05:28,709 INFO L87 Difference]: Start difference. First operand 319 states and 497 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:29,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:29,995 INFO L93 Difference]: Finished difference Result 935 states and 1480 transitions. [2023-11-29 01:05:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:05:29,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-11-29 01:05:29,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:29,999 INFO L225 Difference]: With dead ends: 935 [2023-11-29 01:05:29,999 INFO L226 Difference]: Without dead ends: 627 [2023-11-29 01:05:30,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:05:30,001 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 608 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:30,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 916 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:05:30,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2023-11-29 01:05:30,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 464. [2023-11-29 01:05:30,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 399 states have (on average 1.568922305764411) internal successors, (626), 402 states have internal predecessors, (626), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2023-11-29 01:05:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 719 transitions. [2023-11-29 01:05:30,029 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 719 transitions. Word has length 81 [2023-11-29 01:05:30,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:30,029 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 719 transitions. [2023-11-29 01:05:30,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:30,029 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 719 transitions. [2023-11-29 01:05:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:05:30,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:30,030 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] [2023-11-29 01:05:30,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:05:30,031 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:30,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:30,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2135337818, now seen corresponding path program 1 times [2023-11-29 01:05:30,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:30,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975293657] [2023-11-29 01:05:30,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:30,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:30,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:30,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:05:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:30,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:05:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:30,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:05:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:30,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 01:05:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:30,159 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 01:05:30,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:30,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975293657] [2023-11-29 01:05:30,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975293657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:30,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:30,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:05:30,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367009406] [2023-11-29 01:05:30,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:30,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:05:30,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:30,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:05:30,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:05:30,161 INFO L87 Difference]: Start difference. First operand 464 states and 719 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:31,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:31,394 INFO L93 Difference]: Finished difference Result 1469 states and 2318 transitions. [2023-11-29 01:05:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:05:31,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-11-29 01:05:31,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:31,400 INFO L225 Difference]: With dead ends: 1469 [2023-11-29 01:05:31,400 INFO L226 Difference]: Without dead ends: 1016 [2023-11-29 01:05:31,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:05:31,402 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 606 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:31,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 914 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:05:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-11-29 01:05:31,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 755. [2023-11-29 01:05:31,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 650 states have (on average 1.5615384615384615) internal successors, (1015), 655 states have internal predecessors, (1015), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-11-29 01:05:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1168 transitions. [2023-11-29 01:05:31,456 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1168 transitions. Word has length 81 [2023-11-29 01:05:31,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:31,456 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 1168 transitions. [2023-11-29 01:05:31,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:31,456 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1168 transitions. [2023-11-29 01:05:31,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:05:31,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:31,458 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] [2023-11-29 01:05:31,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:05:31,458 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:31,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:31,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1427662052, now seen corresponding path program 1 times [2023-11-29 01:05:31,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:31,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173347631] [2023-11-29 01:05:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:31,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:31,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:31,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:05:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:31,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:05:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:31,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:05:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:31,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 01:05:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:31,585 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 01:05:31,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:31,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173347631] [2023-11-29 01:05:31,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173347631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:31,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:31,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:05:31,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579072858] [2023-11-29 01:05:31,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:31,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:05:31,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:31,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:05:31,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:05:31,587 INFO L87 Difference]: Start difference. First operand 755 states and 1168 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:32,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:32,729 INFO L93 Difference]: Finished difference Result 2496 states and 3927 transitions. [2023-11-29 01:05:32,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:05:32,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-11-29 01:05:32,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:32,739 INFO L225 Difference]: With dead ends: 2496 [2023-11-29 01:05:32,739 INFO L226 Difference]: Without dead ends: 1752 [2023-11-29 01:05:32,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:05:32,741 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 653 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:32,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 612 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:05:32,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2023-11-29 01:05:32,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1338. [2023-11-29 01:05:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1153 states have (on average 1.5550737207285343) internal successors, (1793), 1162 states have internal predecessors, (1793), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2023-11-29 01:05:32,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 2072 transitions. [2023-11-29 01:05:32,868 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 2072 transitions. Word has length 81 [2023-11-29 01:05:32,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:32,868 INFO L495 AbstractCegarLoop]: Abstraction has 1338 states and 2072 transitions. [2023-11-29 01:05:32,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:32,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 2072 transitions. [2023-11-29 01:05:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:05:32,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:32,871 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] [2023-11-29 01:05:32,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:05:32,871 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:32,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:32,872 INFO L85 PathProgramCache]: Analyzing trace with hash -258517786, now seen corresponding path program 1 times [2023-11-29 01:05:32,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:32,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445170633] [2023-11-29 01:05:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:32,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:32,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:32,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:05:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:33,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:05:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:33,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:05:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:33,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 01:05:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:33,017 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 01:05:33,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:33,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445170633] [2023-11-29 01:05:33,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445170633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:33,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:33,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:05:33,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455311585] [2023-11-29 01:05:33,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:33,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:05:33,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:33,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:05:33,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:05:33,019 INFO L87 Difference]: Start difference. First operand 1338 states and 2072 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:34,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:34,325 INFO L93 Difference]: Finished difference Result 4549 states and 7161 transitions. [2023-11-29 01:05:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:05:34,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-11-29 01:05:34,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:34,345 INFO L225 Difference]: With dead ends: 4549 [2023-11-29 01:05:34,345 INFO L226 Difference]: Without dead ends: 3222 [2023-11-29 01:05:34,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:05:34,350 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 604 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:34,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 914 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1530 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:05:34,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2023-11-29 01:05:34,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 2509. [2023-11-29 01:05:34,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 2164 states have (on average 1.5503696857670979) internal successors, (3355), 2181 states have internal predecessors, (3355), 226 states have call successors, (226), 102 states have call predecessors, (226), 118 states have return successors, (323), 241 states have call predecessors, (323), 226 states have call successors, (323) [2023-11-29 01:05:34,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3904 transitions. [2023-11-29 01:05:34,580 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3904 transitions. Word has length 81 [2023-11-29 01:05:34,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:34,580 INFO L495 AbstractCegarLoop]: Abstraction has 2509 states and 3904 transitions. [2023-11-29 01:05:34,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:34,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3904 transitions. [2023-11-29 01:05:34,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:05:34,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:34,584 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] [2023-11-29 01:05:34,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:05:34,585 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:34,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:34,585 INFO L85 PathProgramCache]: Analyzing trace with hash -312910684, now seen corresponding path program 1 times [2023-11-29 01:05:34,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:34,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657251472] [2023-11-29 01:05:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:34,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:34,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:05:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:34,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:05:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:34,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:05:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:34,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 01:05:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:34,744 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 01:05:34,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:34,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657251472] [2023-11-29 01:05:34,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657251472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:34,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:34,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:05:34,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320436627] [2023-11-29 01:05:34,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:34,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:05:34,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:34,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:05:34,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:05:34,746 INFO L87 Difference]: Start difference. First operand 2509 states and 3904 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:36,282 INFO L93 Difference]: Finished difference Result 9359 states and 14797 transitions. [2023-11-29 01:05:36,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:05:36,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-11-29 01:05:36,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:36,322 INFO L225 Difference]: With dead ends: 9359 [2023-11-29 01:05:36,322 INFO L226 Difference]: Without dead ends: 6861 [2023-11-29 01:05:36,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:05:36,332 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 718 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:36,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 903 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:05:36,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6861 states. [2023-11-29 01:05:36,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6861 to 4769. [2023-11-29 01:05:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4769 states, 4120 states have (on average 1.5502427184466019) internal successors, (6387), 4153 states have internal predecessors, (6387), 418 states have call successors, (418), 198 states have call predecessors, (418), 230 states have return successors, (693), 449 states have call predecessors, (693), 418 states have call successors, (693) [2023-11-29 01:05:36,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4769 states to 4769 states and 7498 transitions. [2023-11-29 01:05:36,822 INFO L78 Accepts]: Start accepts. Automaton has 4769 states and 7498 transitions. Word has length 81 [2023-11-29 01:05:36,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:36,822 INFO L495 AbstractCegarLoop]: Abstraction has 4769 states and 7498 transitions. [2023-11-29 01:05:36,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:36,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4769 states and 7498 transitions. [2023-11-29 01:05:36,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:05:36,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:36,829 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] [2023-11-29 01:05:36,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:05:36,829 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:36,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:36,830 INFO L85 PathProgramCache]: Analyzing trace with hash 366361570, now seen corresponding path program 1 times [2023-11-29 01:05:36,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:36,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435720197] [2023-11-29 01:05:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:36,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:36,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:36,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:05:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:36,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:05:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:36,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:05:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:36,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 01:05:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:36,992 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 01:05:36,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:36,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435720197] [2023-11-29 01:05:36,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435720197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:36,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:36,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:05:36,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958784510] [2023-11-29 01:05:36,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:36,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:05:36,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:36,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:05:36,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:05:36,994 INFO L87 Difference]: Start difference. First operand 4769 states and 7498 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:38,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:38,942 INFO L93 Difference]: Finished difference Result 17605 states and 28049 transitions. [2023-11-29 01:05:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:05:38,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-11-29 01:05:38,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:39,020 INFO L225 Difference]: With dead ends: 17605 [2023-11-29 01:05:39,021 INFO L226 Difference]: Without dead ends: 12847 [2023-11-29 01:05:39,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:05:39,040 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 619 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:39,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 907 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:05:39,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12847 states. [2023-11-29 01:05:39,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12847 to 9366. [2023-11-29 01:05:39,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9366 states, 8125 states have (on average 1.5513846153846154) internal successors, (12605), 8190 states have internal predecessors, (12605), 786 states have call successors, (786), 390 states have call predecessors, (786), 454 states have return successors, (1579), 849 states have call predecessors, (1579), 786 states have call successors, (1579) [2023-11-29 01:05:39,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9366 states to 9366 states and 14970 transitions. [2023-11-29 01:05:39,888 INFO L78 Accepts]: Start accepts. Automaton has 9366 states and 14970 transitions. Word has length 81 [2023-11-29 01:05:39,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:39,889 INFO L495 AbstractCegarLoop]: Abstraction has 9366 states and 14970 transitions. [2023-11-29 01:05:39,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:39,889 INFO L276 IsEmpty]: Start isEmpty. Operand 9366 states and 14970 transitions. [2023-11-29 01:05:39,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:05:39,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:39,900 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] [2023-11-29 01:05:39,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:05:39,900 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:39,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:39,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1967031068, now seen corresponding path program 1 times [2023-11-29 01:05:39,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:39,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807575235] [2023-11-29 01:05:39,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:39,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:39,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:39,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:05:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:40,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:05:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:40,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:05:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:40,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 01:05:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:40,041 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 01:05:40,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:40,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807575235] [2023-11-29 01:05:40,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807575235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:40,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:40,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:05:40,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491953357] [2023-11-29 01:05:40,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:40,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:05:40,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:40,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:05:40,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:05:40,044 INFO L87 Difference]: Start difference. First operand 9366 states and 14970 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:42,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:42,593 INFO L93 Difference]: Finished difference Result 33824 states and 54719 transitions. [2023-11-29 01:05:42,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:05:42,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-11-29 01:05:42,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:42,660 INFO L225 Difference]: With dead ends: 33824 [2023-11-29 01:05:42,660 INFO L226 Difference]: Without dead ends: 24469 [2023-11-29 01:05:42,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:05:42,684 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 647 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:42,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 907 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:05:42,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24469 states. [2023-11-29 01:05:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24469 to 18559. [2023-11-29 01:05:44,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18559 states, 16166 states have (on average 1.5528269206977607) internal successors, (25103), 16295 states have internal predecessors, (25103), 1490 states have call successors, (1490), 774 states have call predecessors, (1490), 902 states have return successors, (3805), 1617 states have call predecessors, (3805), 1490 states have call successors, (3805) [2023-11-29 01:05:44,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18559 states to 18559 states and 30398 transitions. [2023-11-29 01:05:44,057 INFO L78 Accepts]: Start accepts. Automaton has 18559 states and 30398 transitions. Word has length 81 [2023-11-29 01:05:44,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:44,058 INFO L495 AbstractCegarLoop]: Abstraction has 18559 states and 30398 transitions. [2023-11-29 01:05:44,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:44,058 INFO L276 IsEmpty]: Start isEmpty. Operand 18559 states and 30398 transitions. [2023-11-29 01:05:44,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:05:44,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:44,071 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] [2023-11-29 01:05:44,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:05:44,072 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:44,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:44,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1765207134, now seen corresponding path program 1 times [2023-11-29 01:05:44,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:44,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198113026] [2023-11-29 01:05:44,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:44,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:44,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:44,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:05:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:44,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:05:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:44,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:05:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:44,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 01:05:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:44,205 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 01:05:44,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:44,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198113026] [2023-11-29 01:05:44,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198113026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:44,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:44,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:05:44,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618150223] [2023-11-29 01:05:44,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:44,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:05:44,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:44,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:05:44,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:05:44,207 INFO L87 Difference]: Start difference. First operand 18559 states and 30398 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:47,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:47,016 INFO L93 Difference]: Finished difference Result 65303 states and 108341 transitions. [2023-11-29 01:05:47,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:05:47,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-11-29 01:05:47,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:47,214 INFO L225 Difference]: With dead ends: 65303 [2023-11-29 01:05:47,214 INFO L226 Difference]: Without dead ends: 46755 [2023-11-29 01:05:47,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:05:47,265 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 608 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:47,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 907 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:05:47,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46755 states. [2023-11-29 01:05:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46755 to 36944. [2023-11-29 01:05:49,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36944 states, 32311 states have (on average 1.554424189904367) internal successors, (50225), 32568 states have internal predecessors, (50225), 2834 states have call successors, (2834), 1542 states have call predecessors, (2834), 1798 states have return successors, (9651), 3089 states have call predecessors, (9651), 2834 states have call successors, (9651) [2023-11-29 01:05:49,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36944 states to 36944 states and 62710 transitions. [2023-11-29 01:05:49,965 INFO L78 Accepts]: Start accepts. Automaton has 36944 states and 62710 transitions. Word has length 81 [2023-11-29 01:05:49,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:49,966 INFO L495 AbstractCegarLoop]: Abstraction has 36944 states and 62710 transitions. [2023-11-29 01:05:49,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:49,966 INFO L276 IsEmpty]: Start isEmpty. Operand 36944 states and 62710 transitions. [2023-11-29 01:05:49,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:05:49,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:49,991 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] [2023-11-29 01:05:49,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:05:49,992 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:49,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:49,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1204507356, now seen corresponding path program 1 times [2023-11-29 01:05:49,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:49,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952816324] [2023-11-29 01:05:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:49,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:05:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:50,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:05:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:50,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:05:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:50,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:05:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:50,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 01:05:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:50,129 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 01:05:50,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:50,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952816324] [2023-11-29 01:05:50,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952816324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:50,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:50,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:05:50,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804559738] [2023-11-29 01:05:50,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:50,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:05:50,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:50,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:05:50,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:05:50,132 INFO L87 Difference]: Start difference. First operand 36944 states and 62710 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:05:58,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:58,124 INFO L93 Difference]: Finished difference Result 169961 states and 288704 transitions. [2023-11-29 01:05:58,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:05:58,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-11-29 01:05:58,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:58,495 INFO L225 Difference]: With dead ends: 169961 [2023-11-29 01:05:58,495 INFO L226 Difference]: Without dead ends: 133029 [2023-11-29 01:05:58,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:05:58,584 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1629 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:58,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 763 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:05:58,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133029 states. [2023-11-29 01:06:06,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133029 to 108219. [2023-11-29 01:06:06,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108219 states, 94376 states have (on average 1.5412604899550733) internal successors, (145458), 95532 states have internal predecessors, (145458), 8442 states have call successors, (8442), 4632 states have call predecessors, (8442), 5400 states have return successors, (28268), 8310 states have call predecessors, (28268), 8442 states have call successors, (28268) [2023-11-29 01:06:06,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108219 states to 108219 states and 182168 transitions. [2023-11-29 01:06:06,497 INFO L78 Accepts]: Start accepts. Automaton has 108219 states and 182168 transitions. Word has length 81 [2023-11-29 01:06:06,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:06,497 INFO L495 AbstractCegarLoop]: Abstraction has 108219 states and 182168 transitions. [2023-11-29 01:06:06,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:06:06,498 INFO L276 IsEmpty]: Start isEmpty. Operand 108219 states and 182168 transitions. [2023-11-29 01:06:06,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 01:06:06,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:06,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:06,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 01:06:06,657 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:06,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:06,658 INFO L85 PathProgramCache]: Analyzing trace with hash 2139891914, now seen corresponding path program 1 times [2023-11-29 01:06:06,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:06,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812013282] [2023-11-29 01:06:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:06,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:06,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:06:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:06:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:06,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:06:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:06,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:06:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:06,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 01:06:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:06,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 01:06:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 01:06:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:06,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 01:06:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:06:06,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:06,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812013282] [2023-11-29 01:06:06,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812013282] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:06:06,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966184338] [2023-11-29 01:06:06,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:06,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:06,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:06,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:06,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:06:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:06,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:06:06,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:07,032 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 01:06:07,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:06:07,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966184338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:07,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:06:07,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 01:06:07,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26970647] [2023-11-29 01:06:07,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:07,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:06:07,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:07,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:06:07,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:06:07,036 INFO L87 Difference]: Start difference. First operand 108219 states and 182168 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 01:06:18,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:18,832 INFO L93 Difference]: Finished difference Result 322312 states and 547829 transitions. [2023-11-29 01:06:18,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:06:18,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2023-11-29 01:06:18,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:19,517 INFO L225 Difference]: With dead ends: 322312 [2023-11-29 01:06:19,517 INFO L226 Difference]: Without dead ends: 214105 [2023-11-29 01:06:19,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:06:19,950 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 201 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:19,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 436 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:06:20,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214105 states. [2023-11-29 01:06:32,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214105 to 213331. [2023-11-29 01:06:32,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213331 states, 186038 states have (on average 1.5366860533869424) internal successors, (285882), 188349 states have internal predecessors, (285882), 16492 states have call successors, (16492), 9264 states have call predecessors, (16492), 10800 states have return successors, (55694), 15973 states have call predecessors, (55694), 16492 states have call successors, (55694) [2023-11-29 01:06:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213331 states to 213331 states and 358068 transitions. [2023-11-29 01:06:33,642 INFO L78 Accepts]: Start accepts. Automaton has 213331 states and 358068 transitions. Word has length 131 [2023-11-29 01:06:33,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:33,642 INFO L495 AbstractCegarLoop]: Abstraction has 213331 states and 358068 transitions. [2023-11-29 01:06:33,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 01:06:33,642 INFO L276 IsEmpty]: Start isEmpty. Operand 213331 states and 358068 transitions. [2023-11-29 01:06:33,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 01:06:33,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:33,960 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:33,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:06:34,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:06:34,161 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:34,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:34,162 INFO L85 PathProgramCache]: Analyzing trace with hash -875439638, now seen corresponding path program 1 times [2023-11-29 01:06:34,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:34,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564665975] [2023-11-29 01:06:34,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:34,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:34,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:06:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:34,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:06:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:34,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:06:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:34,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:06:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:34,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 01:06:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:34,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 01:06:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:34,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 01:06:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:34,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 01:06:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:34,314 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:06:34,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:34,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564665975] [2023-11-29 01:06:34,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564665975] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:06:34,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647010738] [2023-11-29 01:06:34,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:34,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:34,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:34,316 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:34,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:06:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:34,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:06:34,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:06:34,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:06:34,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647010738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:34,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:06:34,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 01:06:34,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028437401] [2023-11-29 01:06:34,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:34,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:06:34,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:34,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:06:34,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:06:34,532 INFO L87 Difference]: Start difference. First operand 213331 states and 358068 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 01:06:58,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:58,319 INFO L93 Difference]: Finished difference Result 633360 states and 1072149 transitions. [2023-11-29 01:06:58,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:06:58,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2023-11-29 01:06:58,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:59,999 INFO L225 Difference]: With dead ends: 633360 [2023-11-29 01:06:59,999 INFO L226 Difference]: Without dead ends: 420041 [2023-11-29 01:07:00,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:07:00,355 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 196 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:00,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 437 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:07:00,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420041 states. [2023-11-29 01:07:24,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420041 to 418495. [2023-11-29 01:07:25,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418495 states, 365746 states have (on average 1.533299065471666) internal successors, (560798), 370367 states have internal predecessors, (560798), 31292 states have call successors, (31292), 18384 states have call predecessors, (31292), 21456 states have return successors, (108667), 29999 states have call predecessors, (108667), 31292 states have call successors, (108667) [2023-11-29 01:07:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418495 states to 418495 states and 700757 transitions. [2023-11-29 01:07:27,280 INFO L78 Accepts]: Start accepts. Automaton has 418495 states and 700757 transitions. Word has length 131 [2023-11-29 01:07:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:27,280 INFO L495 AbstractCegarLoop]: Abstraction has 418495 states and 700757 transitions. [2023-11-29 01:07:27,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 01:07:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 418495 states and 700757 transitions. [2023-11-29 01:07:27,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 01:07:27,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:27,729 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:27,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 01:07:27,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:07:27,930 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:27,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:27,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1992946890, now seen corresponding path program 1 times [2023-11-29 01:07:27,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:27,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847157652] [2023-11-29 01:07:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:27,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:07:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:28,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:07:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:28,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:07:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:28,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:07:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:28,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 01:07:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:28,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 01:07:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:28,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 01:07:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:28,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 01:07:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:28,079 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:07:28,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:28,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847157652] [2023-11-29 01:07:28,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847157652] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:07:28,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367695093] [2023-11-29 01:07:28,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:28,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:28,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:28,081 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:28,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1651140-5911-4024-9d53-c0251354a710/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:07:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:28,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:07:28,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 01:07:28,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:28,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367695093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:28,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:07:28,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 01:07:28,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617440522] [2023-11-29 01:07:28,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:28,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:07:28,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:28,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:07:28,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:07:28,236 INFO L87 Difference]: Start difference. First operand 418495 states and 700757 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 01:08:12,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:12,910 INFO L93 Difference]: Finished difference Result 1239233 states and 2100772 transitions. [2023-11-29 01:08:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:08:12,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 131 [2023-11-29 01:08:12,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:16,386 INFO L225 Difference]: With dead ends: 1239233 [2023-11-29 01:08:16,387 INFO L226 Difference]: Without dead ends: 820751 [2023-11-29 01:08:17,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:08:17,204 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 220 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:17,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 670 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:08:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820751 states.