./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/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_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/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_98e2254f-9b53-4e83-b65a-133c9bd14109/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 af1a65b4dba99a03062f9c0ef0e7df0ff9812521932f446bc475a13832d55c02 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:44:18,955 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:44:19,018 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 23:44:19,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:44:19,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:44:19,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:44:19,045 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:44:19,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:44:19,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:44:19,046 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:44:19,047 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:44:19,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:44:19,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:44:19,049 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:44:19,049 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:44:19,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:44:19,050 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:44:19,051 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:44:19,051 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:44:19,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:44:19,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:44:19,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:44:19,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:44:19,055 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:44:19,055 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:44:19,055 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:44:19,056 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:44:19,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:44:19,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:44:19,057 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:44:19,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:44:19,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:44:19,058 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:44:19,058 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:44:19,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:44:19,059 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:44:19,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:44:19,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:44:19,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:44:19,060 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:44:19,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:44:19,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:44:19,062 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_98e2254f-9b53-4e83-b65a-133c9bd14109/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af1a65b4dba99a03062f9c0ef0e7df0ff9812521932f446bc475a13832d55c02 [2023-11-28 23:44:19,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:44:19,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:44:19,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:44:19,296 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:44:19,296 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:44:19,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c [2023-11-28 23:44:22,058 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:44:22,283 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:44:22,284 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c [2023-11-28 23:44:22,304 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/data/dbaf3264d/2a874c1004d0429382495c4cb3efd90f/FLAG001711d00 [2023-11-28 23:44:22,319 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/data/dbaf3264d/2a874c1004d0429382495c4cb3efd90f [2023-11-28 23:44:22,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:44:22,323 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:44:22,324 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:44:22,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:44:22,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:44:22,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:44:22" (1/1) ... [2023-11-28 23:44:22,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@273f0ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:22, skipping insertion in model container [2023-11-28 23:44:22,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:44:22" (1/1) ... [2023-11-28 23:44:22,390 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:44:22,546 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_98e2254f-9b53-4e83-b65a-133c9bd14109/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c[911,924] [2023-11-28 23:44:22,614 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_98e2254f-9b53-4e83-b65a-133c9bd14109/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c[8416,8429] [2023-11-28 23:44:22,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:44:22,743 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:44:22,755 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_98e2254f-9b53-4e83-b65a-133c9bd14109/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c[911,924] [2023-11-28 23:44:22,772 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_98e2254f-9b53-4e83-b65a-133c9bd14109/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c[8416,8429] [2023-11-28 23:44:22,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:44:22,846 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:44:22,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:22 WrapperNode [2023-11-28 23:44:22,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:44:22,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:44:22,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:44:22,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:44:22,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:22" (1/1) ... [2023-11-28 23:44:22,872 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:22" (1/1) ... [2023-11-28 23:44:22,936 INFO L138 Inliner]: procedures = 81, calls = 101, calls flagged for inlining = 49, calls inlined = 49, statements flattened = 1172 [2023-11-28 23:44:22,936 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:44:22,937 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:44:22,937 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:44:22,937 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:44:22,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:22" (1/1) ... [2023-11-28 23:44:22,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:22" (1/1) ... [2023-11-28 23:44:22,952 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:22" (1/1) ... [2023-11-28 23:44:22,975 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]. [2023-11-28 23:44:22,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:22" (1/1) ... [2023-11-28 23:44:22,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:22" (1/1) ... [2023-11-28 23:44:22,994 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:22" (1/1) ... [2023-11-28 23:44:23,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:22" (1/1) ... [2023-11-28 23:44:23,016 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:22" (1/1) ... [2023-11-28 23:44:23,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:22" (1/1) ... [2023-11-28 23:44:23,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:44:23,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:44:23,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:44:23,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:44:23,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:22" (1/1) ... [2023-11-28 23:44:23,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:44:23,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:23,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:44:23,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:44:23,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:44:23,103 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-28 23:44:23,103 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-28 23:44:23,103 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-28 23:44:23,103 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-28 23:44:23,103 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-28 23:44:23,104 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-28 23:44:23,104 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-28 23:44:23,104 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-28 23:44:23,104 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-28 23:44:23,104 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-28 23:44:23,104 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-28 23:44:23,105 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-28 23:44:23,105 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-28 23:44:23,105 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-28 23:44:23,105 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-28 23:44:23,105 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-28 23:44:23,106 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-28 23:44:23,106 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-28 23:44:23,106 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-28 23:44:23,106 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-28 23:44:23,106 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-28 23:44:23,106 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-28 23:44:23,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:44:23,107 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-28 23:44:23,107 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-28 23:44:23,107 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-28 23:44:23,107 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-28 23:44:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:44:23,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:44:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-28 23:44:23,108 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-28 23:44:23,108 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-11-28 23:44:23,108 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-11-28 23:44:23,243 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:44:23,246 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:44:23,959 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-11-28 23:44:23,959 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; [2023-11-28 23:44:24,048 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:44:24,112 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:44:24,112 INFO L309 CfgBuilder]: Removed 20 assume(true) statements. [2023-11-28 23:44:24,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:44:24 BoogieIcfgContainer [2023-11-28 23:44:24,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:44:24,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:44:24,116 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:44:24,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:44:24,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:44:22" (1/3) ... [2023-11-28 23:44:24,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfb4ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:44:24, skipping insertion in model container [2023-11-28 23:44:24,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:44:22" (2/3) ... [2023-11-28 23:44:24,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfb4ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:44:24, skipping insertion in model container [2023-11-28 23:44:24,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:44:24" (3/3) ... [2023-11-28 23:44:24,121 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.15.cil.c [2023-11-28 23:44:24,135 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:44:24,135 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-28 23:44:24,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:44:24,197 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;@3ab15991, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:44:24,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-28 23:44:24,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 481 states, 418 states have (on average 1.7200956937799043) internal successors, (719), 426 states have internal predecessors, (719), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 23:44:24,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-28 23:44:24,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:24,217 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] [2023-11-28 23:44:24,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:24,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:24,222 INFO L85 PathProgramCache]: Analyzing trace with hash -496887913, now seen corresponding path program 1 times [2023-11-28 23:44:24,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:24,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940490545] [2023-11-28 23:44:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:24,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:24,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:24,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:24,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:24,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:24,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:24,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:44:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:24,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 23:44:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:24,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:24,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940490545] [2023-11-28 23:44:24,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940490545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:24,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:24,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 23:44:24,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331558192] [2023-11-28 23:44:24,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:24,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:44:24,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:24,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:44:24,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:44:24,722 INFO L87 Difference]: Start difference. First operand has 481 states, 418 states have (on average 1.7200956937799043) internal successors, (719), 426 states have internal predecessors, (719), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 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) [2023-11-28 23:44:26,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:26,402 INFO L93 Difference]: Finished difference Result 1073 states and 1793 transitions. [2023-11-28 23:44:26,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:44:26,409 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 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 [2023-11-28 23:44:26,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:26,427 INFO L225 Difference]: With dead ends: 1073 [2023-11-28 23:44:26,427 INFO L226 Difference]: Without dead ends: 613 [2023-11-28 23:44:26,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-28 23:44:26,438 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1271 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:26,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1278 Valid, 1957 Invalid, 1852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-28 23:44:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-11-28 23:44:26,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 576. [2023-11-28 23:44:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 494 states have (on average 1.5951417004048583) internal successors, (788), 501 states have internal predecessors, (788), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (59), 55 states have call predecessors, (59), 54 states have call successors, (59) [2023-11-28 23:44:26,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 905 transitions. [2023-11-28 23:44:26,557 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 905 transitions. Word has length 57 [2023-11-28 23:44:26,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:26,558 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 905 transitions. [2023-11-28 23:44:26,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 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) [2023-11-28 23:44:26,559 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 905 transitions. [2023-11-28 23:44:26,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-28 23:44:26,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:26,563 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] [2023-11-28 23:44:26,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:44:26,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:26,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:26,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1854086615, now seen corresponding path program 1 times [2023-11-28 23:44:26,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:26,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633239288] [2023-11-28 23:44:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:26,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:26,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:26,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:26,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:26,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:26,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:44:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:26,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 23:44:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:26,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:26,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:26,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633239288] [2023-11-28 23:44:26,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633239288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:26,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:26,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-28 23:44:26,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209705617] [2023-11-28 23:44:26,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:26,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:44:26,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:26,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:44:26,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:44:26,793 INFO L87 Difference]: Start difference. First operand 576 states and 905 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-28 23:44:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:29,333 INFO L93 Difference]: Finished difference Result 1511 states and 2267 transitions. [2023-11-28 23:44:29,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-28 23:44:29,334 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 57 [2023-11-28 23:44:29,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:29,345 INFO L225 Difference]: With dead ends: 1511 [2023-11-28 23:44:29,345 INFO L226 Difference]: Without dead ends: 1311 [2023-11-28 23:44:29,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-11-28 23:44:29,349 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 3843 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3863 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:29,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3863 Valid, 2521 Invalid, 2947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-28 23:44:29,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2023-11-28 23:44:29,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1192. [2023-11-28 23:44:29,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 980 states have (on average 1.5) internal successors, (1470), 995 states have internal predecessors, (1470), 129 states have call successors, (129), 75 states have call predecessors, (129), 81 states have return successors, (139), 123 states have call predecessors, (139), 125 states have call successors, (139) [2023-11-28 23:44:29,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1738 transitions. [2023-11-28 23:44:29,442 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1738 transitions. Word has length 57 [2023-11-28 23:44:29,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:29,442 INFO L495 AbstractCegarLoop]: Abstraction has 1192 states and 1738 transitions. [2023-11-28 23:44:29,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-28 23:44:29,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1738 transitions. [2023-11-28 23:44:29,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-28 23:44:29,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:29,445 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] [2023-11-28 23:44:29,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:44:29,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:29,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:29,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1330642772, now seen corresponding path program 1 times [2023-11-28 23:44:29,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:29,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757302074] [2023-11-28 23:44:29,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:29,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:44:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-28 23:44:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:29,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:29,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757302074] [2023-11-28 23:44:29,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757302074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:29,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:29,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 23:44:29,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114695796] [2023-11-28 23:44:29,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:29,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:44:29,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:29,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:44:29,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:44:29,627 INFO L87 Difference]: Start difference. First operand 1192 states and 1738 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) [2023-11-28 23:44:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:31,127 INFO L93 Difference]: Finished difference Result 2130 states and 3044 transitions. [2023-11-28 23:44:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:44:31,127 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 [2023-11-28 23:44:31,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:31,135 INFO L225 Difference]: With dead ends: 2130 [2023-11-28 23:44:31,136 INFO L226 Difference]: Without dead ends: 1320 [2023-11-28 23:44:31,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:44:31,140 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1003 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:31,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 2379 Invalid, 2414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-28 23:44:31,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2023-11-28 23:44:31,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1216. [2023-11-28 23:44:31,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 998 states have (on average 1.4879759519038076) internal successors, (1485), 1013 states have internal predecessors, (1485), 129 states have call successors, (129), 75 states have call predecessors, (129), 87 states have return successors, (145), 129 states have call predecessors, (145), 125 states have call successors, (145) [2023-11-28 23:44:31,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1759 transitions. [2023-11-28 23:44:31,209 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1759 transitions. Word has length 58 [2023-11-28 23:44:31,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:31,210 INFO L495 AbstractCegarLoop]: Abstraction has 1216 states and 1759 transitions. [2023-11-28 23:44:31,210 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) [2023-11-28 23:44:31,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1759 transitions. [2023-11-28 23:44:31,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-28 23:44:31,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:31,212 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] [2023-11-28 23:44:31,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:44:31,213 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:31,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:31,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1403029330, now seen corresponding path program 1 times [2023-11-28 23:44:31,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:31,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269331081] [2023-11-28 23:44:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:31,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:31,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:31,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:31,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:31,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:31,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:44:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:31,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-28 23:44:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:31,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:31,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269331081] [2023-11-28 23:44:31,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269331081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:31,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:31,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-28 23:44:31,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806153438] [2023-11-28 23:44:31,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:31,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:44:31,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:31,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:44:31,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:44:31,386 INFO L87 Difference]: Start difference. First operand 1216 states and 1759 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-28 23:44:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:33,685 INFO L93 Difference]: Finished difference Result 3348 states and 4740 transitions. [2023-11-28 23:44:33,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-28 23:44:33,686 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-11-28 23:44:33,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:33,696 INFO L225 Difference]: With dead ends: 3348 [2023-11-28 23:44:33,696 INFO L226 Difference]: Without dead ends: 1446 [2023-11-28 23:44:33,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-11-28 23:44:33,701 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 3923 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3943 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:33,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3943 Valid, 2558 Invalid, 2813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-28 23:44:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2023-11-28 23:44:33,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1309. [2023-11-28 23:44:33,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1056 states have (on average 1.4460227272727273) internal successors, (1527), 1071 states have internal predecessors, (1527), 149 states have call successors, (149), 89 states have call predecessors, (149), 102 states have return successors, (166), 150 states have call predecessors, (166), 145 states have call successors, (166) [2023-11-28 23:44:33,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1842 transitions. [2023-11-28 23:44:33,801 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1842 transitions. Word has length 58 [2023-11-28 23:44:33,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:33,801 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 1842 transitions. [2023-11-28 23:44:33,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-28 23:44:33,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1842 transitions. [2023-11-28 23:44:33,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-28 23:44:33,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:33,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:33,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 23:44:33,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:33,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:33,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1829513589, now seen corresponding path program 1 times [2023-11-28 23:44:33,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:33,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407574486] [2023-11-28 23:44:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:33,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:33,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:33,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:33,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:33,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 23:44:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:33,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:33,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-28 23:44:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-28 23:44:33,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:33,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407574486] [2023-11-28 23:44:33,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407574486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:33,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:33,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 23:44:33,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360663611] [2023-11-28 23:44:33,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:33,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:44:33,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:33,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:44:33,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:44:33,972 INFO L87 Difference]: Start difference. First operand 1309 states and 1842 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 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) [2023-11-28 23:44:35,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:35,446 INFO L93 Difference]: Finished difference Result 2395 states and 3302 transitions. [2023-11-28 23:44:35,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:44:35,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 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 80 [2023-11-28 23:44:35,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:35,455 INFO L225 Difference]: With dead ends: 2395 [2023-11-28 23:44:35,455 INFO L226 Difference]: Without dead ends: 1468 [2023-11-28 23:44:35,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-28 23:44:35,458 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 993 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:35,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 2348 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-28 23:44:35,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2023-11-28 23:44:35,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1341. [2023-11-28 23:44:35,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1080 states have (on average 1.4333333333333333) internal successors, (1548), 1095 states have internal predecessors, (1548), 149 states have call successors, (149), 89 states have call predecessors, (149), 110 states have return successors, (174), 158 states have call predecessors, (174), 145 states have call successors, (174) [2023-11-28 23:44:35,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1871 transitions. [2023-11-28 23:44:35,525 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1871 transitions. Word has length 80 [2023-11-28 23:44:35,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:35,525 INFO L495 AbstractCegarLoop]: Abstraction has 1341 states and 1871 transitions. [2023-11-28 23:44:35,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 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) [2023-11-28 23:44:35,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1871 transitions. [2023-11-28 23:44:35,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-28 23:44:35,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:35,528 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:35,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:44:35,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:35,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:35,529 INFO L85 PathProgramCache]: Analyzing trace with hash 98759113, now seen corresponding path program 1 times [2023-11-28 23:44:35,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:35,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104795837] [2023-11-28 23:44:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:35,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:35,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:35,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:35,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:35,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:35,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:35,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 23:44:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:35,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:35,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-28 23:44:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-28 23:44:35,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:35,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104795837] [2023-11-28 23:44:35,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104795837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:35,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:35,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 23:44:35,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902605176] [2023-11-28 23:44:35,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:35,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:44:35,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:35,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:44:35,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:44:35,758 INFO L87 Difference]: Start difference. First operand 1341 states and 1871 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 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) [2023-11-28 23:44:37,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:37,148 INFO L93 Difference]: Finished difference Result 3215 states and 4312 transitions. [2023-11-28 23:44:37,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-28 23:44:37,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 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 80 [2023-11-28 23:44:37,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:37,163 INFO L225 Difference]: With dead ends: 3215 [2023-11-28 23:44:37,163 INFO L226 Difference]: Without dead ends: 2257 [2023-11-28 23:44:37,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-11-28 23:44:37,167 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 1480 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:37,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 2017 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-28 23:44:37,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2023-11-28 23:44:37,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 1963. [2023-11-28 23:44:37,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1963 states, 1554 states have (on average 1.388030888030888) internal successors, (2157), 1582 states have internal predecessors, (2157), 225 states have call successors, (225), 142 states have call predecessors, (225), 182 states have return successors, (287), 241 states have call predecessors, (287), 221 states have call successors, (287) [2023-11-28 23:44:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 2669 transitions. [2023-11-28 23:44:37,334 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 2669 transitions. Word has length 80 [2023-11-28 23:44:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:37,334 INFO L495 AbstractCegarLoop]: Abstraction has 1963 states and 2669 transitions. [2023-11-28 23:44:37,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 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) [2023-11-28 23:44:37,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 2669 transitions. [2023-11-28 23:44:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-28 23:44:37,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:37,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:37,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 23:44:37,337 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:37,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:37,338 INFO L85 PathProgramCache]: Analyzing trace with hash 522405835, now seen corresponding path program 1 times [2023-11-28 23:44:37,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:37,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70805244] [2023-11-28 23:44:37,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:37,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 23:44:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-28 23:44:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:44:37,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:37,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70805244] [2023-11-28 23:44:37,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70805244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:37,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:37,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:44:37,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891298054] [2023-11-28 23:44:37,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:37,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:44:37,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:37,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:44:37,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:44:37,476 INFO L87 Difference]: Start difference. First operand 1963 states and 2669 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-28 23:44:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:38,489 INFO L93 Difference]: Finished difference Result 5336 states and 7165 transitions. [2023-11-28 23:44:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:44:38,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 80 [2023-11-28 23:44:38,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:38,508 INFO L225 Difference]: With dead ends: 5336 [2023-11-28 23:44:38,508 INFO L226 Difference]: Without dead ends: 3758 [2023-11-28 23:44:38,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:44:38,512 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1768 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:38,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1803 Valid, 1318 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-28 23:44:38,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2023-11-28 23:44:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3542. [2023-11-28 23:44:38,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 2752 states have (on average 1.3372093023255813) internal successors, (3680), 2816 states have internal predecessors, (3680), 418 states have call successors, (418), 276 states have call predecessors, (418), 370 states have return successors, (627), 454 states have call predecessors, (627), 414 states have call successors, (627) [2023-11-28 23:44:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 4725 transitions. [2023-11-28 23:44:38,729 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 4725 transitions. Word has length 80 [2023-11-28 23:44:38,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:38,730 INFO L495 AbstractCegarLoop]: Abstraction has 3542 states and 4725 transitions. [2023-11-28 23:44:38,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-28 23:44:38,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 4725 transitions. [2023-11-28 23:44:38,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-28 23:44:38,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:38,733 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:38,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 23:44:38,734 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:38,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:38,734 INFO L85 PathProgramCache]: Analyzing trace with hash 599306633, now seen corresponding path program 1 times [2023-11-28 23:44:38,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:38,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375525407] [2023-11-28 23:44:38,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:38,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:38,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:38,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:38,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:38,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 23:44:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:38,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:38,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-28 23:44:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-28 23:44:38,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:38,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375525407] [2023-11-28 23:44:38,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375525407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:38,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:38,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:44:38,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432523613] [2023-11-28 23:44:38,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:38,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:44:38,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:38,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:44:38,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:44:38,822 INFO L87 Difference]: Start difference. First operand 3542 states and 4725 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-28 23:44:39,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:39,694 INFO L93 Difference]: Finished difference Result 5236 states and 6884 transitions. [2023-11-28 23:44:39,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:44:39,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2023-11-28 23:44:39,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:39,705 INFO L225 Difference]: With dead ends: 5236 [2023-11-28 23:44:39,705 INFO L226 Difference]: Without dead ends: 2079 [2023-11-28 23:44:39,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:44:39,711 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1100 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:39,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 1246 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-28 23:44:39,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2023-11-28 23:44:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 1963. [2023-11-28 23:44:39,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1963 states, 1554 states have (on average 1.3603603603603605) internal successors, (2114), 1582 states have internal predecessors, (2114), 225 states have call successors, (225), 142 states have call predecessors, (225), 182 states have return successors, (287), 241 states have call predecessors, (287), 221 states have call successors, (287) [2023-11-28 23:44:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 2626 transitions. [2023-11-28 23:44:39,817 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 2626 transitions. Word has length 80 [2023-11-28 23:44:39,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:39,818 INFO L495 AbstractCegarLoop]: Abstraction has 1963 states and 2626 transitions. [2023-11-28 23:44:39,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-28 23:44:39,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 2626 transitions. [2023-11-28 23:44:39,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-28 23:44:39,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:39,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:39,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 23:44:39,820 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:39,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:39,820 INFO L85 PathProgramCache]: Analyzing trace with hash 568230019, now seen corresponding path program 1 times [2023-11-28 23:44:39,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:39,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79389312] [2023-11-28 23:44:39,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:39,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:39,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:39,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:39,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:39,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:39,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:39,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 23:44:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:39,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:39,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-28 23:44:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:44:39,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:39,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79389312] [2023-11-28 23:44:39,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79389312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:39,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:39,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 23:44:39,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82282740] [2023-11-28 23:44:39,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:39,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:44:39,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:39,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:44:39,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:44:39,945 INFO L87 Difference]: Start difference. First operand 1963 states and 2626 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:44:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:41,831 INFO L93 Difference]: Finished difference Result 4564 states and 6003 transitions. [2023-11-28 23:44:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-28 23:44:41,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2023-11-28 23:44:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:41,848 INFO L225 Difference]: With dead ends: 4564 [2023-11-28 23:44:41,848 INFO L226 Difference]: Without dead ends: 2699 [2023-11-28 23:44:41,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2023-11-28 23:44:41,854 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 2505 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2549 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:41,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2549 Valid, 2056 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-28 23:44:41,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2023-11-28 23:44:42,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2535. [2023-11-28 23:44:42,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2535 states, 1970 states have (on average 1.3172588832487309) internal successors, (2595), 2006 states have internal predecessors, (2595), 303 states have call successors, (303), 190 states have call predecessors, (303), 260 states have return successors, (420), 341 states have call predecessors, (420), 299 states have call successors, (420) [2023-11-28 23:44:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 3318 transitions. [2023-11-28 23:44:42,074 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 3318 transitions. Word has length 81 [2023-11-28 23:44:42,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:42,074 INFO L495 AbstractCegarLoop]: Abstraction has 2535 states and 3318 transitions. [2023-11-28 23:44:42,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:44:42,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 3318 transitions. [2023-11-28 23:44:42,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-28 23:44:42,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:42,079 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-28 23:44:42,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 23:44:42,079 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:42,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:42,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1314556026, now seen corresponding path program 1 times [2023-11-28 23:44:42,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:42,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289240915] [2023-11-28 23:44:42,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:42,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 23:44:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-28 23:44:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-28 23:44:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-28 23:44:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-28 23:44:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-28 23:44:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-28 23:44:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-28 23:44:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-28 23:44:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,319 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-28 23:44:42,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:42,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289240915] [2023-11-28 23:44:42,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289240915] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:42,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041494980] [2023-11-28 23:44:42,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:42,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:42,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:42,323 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:42,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:44:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:44:42,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-28 23:44:42,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:42,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041494980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:42,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:42,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-11-28 23:44:42,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908942648] [2023-11-28 23:44:42,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:42,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:44:42,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:42,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:44:42,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:44:42,641 INFO L87 Difference]: Start difference. First operand 2535 states and 3318 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 23:44:42,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:42,966 INFO L93 Difference]: Finished difference Result 6502 states and 8275 transitions. [2023-11-28 23:44:42,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:44:42,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2023-11-28 23:44:42,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:42,985 INFO L225 Difference]: With dead ends: 6502 [2023-11-28 23:44:42,985 INFO L226 Difference]: Without dead ends: 4494 [2023-11-28 23:44:42,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:44:42,990 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 57 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:42,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1365 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:44:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4494 states. [2023-11-28 23:44:43,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4494 to 4451. [2023-11-28 23:44:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4451 states, 3419 states have (on average 1.2772740567417373) internal successors, (4367), 3484 states have internal predecessors, (4367), 537 states have call successors, (537), 372 states have call predecessors, (537), 493 states have return successors, (727), 597 states have call predecessors, (727), 533 states have call successors, (727) [2023-11-28 23:44:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 5631 transitions. [2023-11-28 23:44:43,369 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 5631 transitions. Word has length 145 [2023-11-28 23:44:43,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:43,370 INFO L495 AbstractCegarLoop]: Abstraction has 4451 states and 5631 transitions. [2023-11-28 23:44:43,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 23:44:43,370 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 5631 transitions. [2023-11-28 23:44:43,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-28 23:44:43,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:43,375 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:43,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:44:43,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-28 23:44:43,576 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:43,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:43,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1366588858, now seen corresponding path program 1 times [2023-11-28 23:44:43,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:43,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447309996] [2023-11-28 23:44:43,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:43,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 23:44:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-28 23:44:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-28 23:44:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-28 23:44:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-28 23:44:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:44:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-28 23:44:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-28 23:44:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-28 23:44:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 23:44:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-28 23:44:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-28 23:44:43,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:43,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447309996] [2023-11-28 23:44:43,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447309996] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:43,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309636219] [2023-11-28 23:44:43,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:43,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:43,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:43,839 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:43,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:44:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:44,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:44:44,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:44,257 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-28 23:44:44,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:44,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309636219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:44,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:44,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-11-28 23:44:44,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308716600] [2023-11-28 23:44:44,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:44,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:44:44,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:44,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:44:44,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:44:44,261 INFO L87 Difference]: Start difference. First operand 4451 states and 5631 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-28 23:44:44,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:44,854 INFO L93 Difference]: Finished difference Result 12583 states and 15633 transitions. [2023-11-28 23:44:44,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:44:44,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 175 [2023-11-28 23:44:44,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:44,892 INFO L225 Difference]: With dead ends: 12583 [2023-11-28 23:44:44,892 INFO L226 Difference]: Without dead ends: 8517 [2023-11-28 23:44:44,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:44:44,901 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 48 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:44,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1364 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:44:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2023-11-28 23:44:45,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 8509. [2023-11-28 23:44:45,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8509 states, 6490 states have (on average 1.250693374422188) internal successors, (8117), 6615 states have internal predecessors, (8117), 1037 states have call successors, (1037), 736 states have call predecessors, (1037), 980 states have return successors, (1420), 1160 states have call predecessors, (1420), 1033 states have call successors, (1420) [2023-11-28 23:44:45,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8509 states to 8509 states and 10574 transitions. [2023-11-28 23:44:45,596 INFO L78 Accepts]: Start accepts. Automaton has 8509 states and 10574 transitions. Word has length 175 [2023-11-28 23:44:45,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:45,597 INFO L495 AbstractCegarLoop]: Abstraction has 8509 states and 10574 transitions. [2023-11-28 23:44:45,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-28 23:44:45,597 INFO L276 IsEmpty]: Start isEmpty. Operand 8509 states and 10574 transitions. [2023-11-28 23:44:45,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-28 23:44:45,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:45,607 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:45,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:44:45,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:45,808 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:45,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:45,808 INFO L85 PathProgramCache]: Analyzing trace with hash 972222072, now seen corresponding path program 1 times [2023-11-28 23:44:45,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:45,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904844002] [2023-11-28 23:44:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:45,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:45,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 23:44:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-28 23:44:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-28 23:44:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-28 23:44:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-28 23:44:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:44:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-28 23:44:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-28 23:44:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-28 23:44:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 23:44:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-28 23:44:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-28 23:44:46,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:46,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904844002] [2023-11-28 23:44:46,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904844002] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:46,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611376402] [2023-11-28 23:44:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:46,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:46,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:46,101 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:46,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:44:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:46,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:44:46,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-28 23:44:46,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:46,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611376402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:46,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:46,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-11-28 23:44:46,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011019848] [2023-11-28 23:44:46,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:46,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:44:46,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:46,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:44:46,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:44:46,515 INFO L87 Difference]: Start difference. First operand 8509 states and 10574 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:44:47,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:47,132 INFO L93 Difference]: Finished difference Result 14519 states and 18294 transitions. [2023-11-28 23:44:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:44:47,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 175 [2023-11-28 23:44:47,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:47,136 INFO L225 Difference]: With dead ends: 14519 [2023-11-28 23:44:47,137 INFO L226 Difference]: Without dead ends: 375 [2023-11-28 23:44:47,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:44:47,165 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 635 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:47,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 677 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:44:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-28 23:44:47,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2023-11-28 23:44:47,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 339 states have (on average 1.640117994100295) internal successors, (556), 341 states have internal predecessors, (556), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-28 23:44:47,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 612 transitions. [2023-11-28 23:44:47,218 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 612 transitions. Word has length 175 [2023-11-28 23:44:47,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:47,218 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 612 transitions. [2023-11-28 23:44:47,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:44:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 612 transitions. [2023-11-28 23:44:47,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-28 23:44:47,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:47,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:47,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:44:47,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e2254f-9b53-4e83-b65a-133c9bd14109/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:47,422 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:47,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:47,422 INFO L85 PathProgramCache]: Analyzing trace with hash -647349812, now seen corresponding path program 1 times [2023-11-28 23:44:47,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:47,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119249528] [2023-11-28 23:44:47,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:47,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:47,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 23:44:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:47,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:44:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:47,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:44:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:47,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-28 23:44:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:47,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:47,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119249528] [2023-11-28 23:44:47,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119249528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:47,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:47,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:44:47,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180606990] [2023-11-28 23:44:47,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:47,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:44:47,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:47,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:44:47,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:44:47,687 INFO L87 Difference]: Start difference. First operand 375 states and 612 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:44:49,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:49,812 INFO L93 Difference]: Finished difference Result 880 states and 1458 transitions. [2023-11-28 23:44:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:44:49,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-11-28 23:44:49,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:49,814 INFO L225 Difference]: With dead ends: 880 [2023-11-28 23:44:49,814 INFO L226 Difference]: Without dead ends: 515 [2023-11-28 23:44:49,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:44:49,815 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1053 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:49,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 680 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-28 23:44:49,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-11-28 23:44:49,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 375. [2023-11-28 23:44:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 339 states have (on average 1.6371681415929205) internal successors, (555), 341 states have internal predecessors, (555), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-28 23:44:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 611 transitions. [2023-11-28 23:44:49,833 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 611 transitions. Word has length 172 [2023-11-28 23:44:49,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:49,833 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 611 transitions. [2023-11-28 23:44:49,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:44:49,833 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 611 transitions. [2023-11-28 23:44:49,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-28 23:44:49,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:49,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:49,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-28 23:44:49,835 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:49,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:49,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2051218998, now seen corresponding path program 1 times [2023-11-28 23:44:49,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:49,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712702645] [2023-11-28 23:44:49,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:49,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 23:44:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:50,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:44:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:50,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:44:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:50,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-28 23:44:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:50,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:50,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712702645] [2023-11-28 23:44:50,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712702645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:50,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:50,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:44:50,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398076703] [2023-11-28 23:44:50,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:50,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:44:50,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:50,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:44:50,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:44:50,048 INFO L87 Difference]: Start difference. First operand 375 states and 611 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:44:52,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:52,104 INFO L93 Difference]: Finished difference Result 872 states and 1441 transitions. [2023-11-28 23:44:52,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:44:52,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-11-28 23:44:52,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:52,107 INFO L225 Difference]: With dead ends: 872 [2023-11-28 23:44:52,107 INFO L226 Difference]: Without dead ends: 515 [2023-11-28 23:44:52,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:44:52,109 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1044 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:52,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 678 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-28 23:44:52,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-11-28 23:44:52,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 375. [2023-11-28 23:44:52,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 339 states have (on average 1.6342182890855457) internal successors, (554), 341 states have internal predecessors, (554), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-28 23:44:52,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 610 transitions. [2023-11-28 23:44:52,134 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 610 transitions. Word has length 172 [2023-11-28 23:44:52,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:52,134 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 610 transitions. [2023-11-28 23:44:52,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:44:52,135 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 610 transitions. [2023-11-28 23:44:52,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-28 23:44:52,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:52,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:52,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-28 23:44:52,137 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:52,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:52,137 INFO L85 PathProgramCache]: Analyzing trace with hash -646027320, now seen corresponding path program 1 times [2023-11-28 23:44:52,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:52,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86288085] [2023-11-28 23:44:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:52,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:52,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:52,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 23:44:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:52,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:44:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:44:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:52,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-28 23:44:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:52,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:52,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86288085] [2023-11-28 23:44:52,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86288085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:52,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:52,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:44:52,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664037356] [2023-11-28 23:44:52,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:52,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:44:52,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:52,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:44:52,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:44:52,444 INFO L87 Difference]: Start difference. First operand 375 states and 610 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:44:55,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:55,829 INFO L93 Difference]: Finished difference Result 1386 states and 2306 transitions. [2023-11-28 23:44:55,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:44:55,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-11-28 23:44:55,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:55,833 INFO L225 Difference]: With dead ends: 1386 [2023-11-28 23:44:55,833 INFO L226 Difference]: Without dead ends: 1031 [2023-11-28 23:44:55,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:44:55,835 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 1597 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:55,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 1147 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-28 23:44:55,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-11-28 23:44:55,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 750. [2023-11-28 23:44:55,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 685 states have (on average 1.6452554744525547) internal successors, (1127), 688 states have internal predecessors, (1127), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2023-11-28 23:44:55,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1230 transitions. [2023-11-28 23:44:55,886 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1230 transitions. Word has length 172 [2023-11-28 23:44:55,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:55,887 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 1230 transitions. [2023-11-28 23:44:55,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:44:55,887 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1230 transitions. [2023-11-28 23:44:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-28 23:44:55,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:55,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:55,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-28 23:44:55,890 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:55,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:55,891 INFO L85 PathProgramCache]: Analyzing trace with hash 359077956, now seen corresponding path program 1 times [2023-11-28 23:44:55,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:55,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384425956] [2023-11-28 23:44:55,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:55,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:56,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:56,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 23:44:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:56,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:44:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:56,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:44:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:56,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-28 23:44:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:56,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:56,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384425956] [2023-11-28 23:44:56,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384425956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:56,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:56,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:44:56,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87245260] [2023-11-28 23:44:56,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:56,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:44:56,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:56,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:44:56,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:44:56,240 INFO L87 Difference]: Start difference. First operand 750 states and 1230 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:00,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:00,945 INFO L93 Difference]: Finished difference Result 2297 states and 3828 transitions. [2023-11-28 23:45:00,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:45:00,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-11-28 23:45:00,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:00,950 INFO L225 Difference]: With dead ends: 2297 [2023-11-28 23:45:00,950 INFO L226 Difference]: Without dead ends: 1567 [2023-11-28 23:45:00,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:45:00,952 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1634 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 4019 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 4086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:00,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 2188 Invalid, 4086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4019 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-28 23:45:00,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2023-11-28 23:45:01,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1096. [2023-11-28 23:45:01,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 1002 states have (on average 1.6387225548902196) internal successors, (1642), 1006 states have internal predecessors, (1642), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-11-28 23:45:01,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1791 transitions. [2023-11-28 23:45:01,015 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1791 transitions. Word has length 172 [2023-11-28 23:45:01,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:01,015 INFO L495 AbstractCegarLoop]: Abstraction has 1096 states and 1791 transitions. [2023-11-28 23:45:01,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:01,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1791 transitions. [2023-11-28 23:45:01,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-28 23:45:01,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:01,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:01,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-28 23:45:01,017 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:01,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:01,017 INFO L85 PathProgramCache]: Analyzing trace with hash 744940358, now seen corresponding path program 1 times [2023-11-28 23:45:01,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:01,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746437487] [2023-11-28 23:45:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:01,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:01,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:01,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 23:45:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:01,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:45:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:01,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:45:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:01,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-28 23:45:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:01,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:01,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746437487] [2023-11-28 23:45:01,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746437487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:01,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:01,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:45:01,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534289159] [2023-11-28 23:45:01,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:01,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:45:01,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:01,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:45:01,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:45:01,293 INFO L87 Difference]: Start difference. First operand 1096 states and 1791 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:05,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:05,926 INFO L93 Difference]: Finished difference Result 3632 states and 6043 transitions. [2023-11-28 23:45:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:45:05,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-11-28 23:45:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:05,936 INFO L225 Difference]: With dead ends: 3632 [2023-11-28 23:45:05,936 INFO L226 Difference]: Without dead ends: 2556 [2023-11-28 23:45:05,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:45:05,941 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1632 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 4015 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 4084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:05,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 2186 Invalid, 4084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4015 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-28 23:45:05,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2023-11-28 23:45:06,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 1789. [2023-11-28 23:45:06,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1789 states, 1637 states have (on average 1.6328649969456324) internal successors, (2673), 1643 states have internal predecessors, (2673), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-11-28 23:45:06,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 2918 transitions. [2023-11-28 23:45:06,055 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 2918 transitions. Word has length 172 [2023-11-28 23:45:06,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:06,056 INFO L495 AbstractCegarLoop]: Abstraction has 1789 states and 2918 transitions. [2023-11-28 23:45:06,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:06,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 2918 transitions. [2023-11-28 23:45:06,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-28 23:45:06,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:06,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:06,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-28 23:45:06,059 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:06,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:06,060 INFO L85 PathProgramCache]: Analyzing trace with hash 480292868, now seen corresponding path program 1 times [2023-11-28 23:45:06,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:06,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780297287] [2023-11-28 23:45:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:06,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 23:45:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:45:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:45:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-28 23:45:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:06,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:06,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780297287] [2023-11-28 23:45:06,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780297287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:06,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:06,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:45:06,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152196947] [2023-11-28 23:45:06,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:06,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:45:06,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:06,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:45:06,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:45:06,367 INFO L87 Difference]: Start difference. First operand 1789 states and 2918 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:11,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:11,022 INFO L93 Difference]: Finished difference Result 6189 states and 10262 transitions. [2023-11-28 23:45:11,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:45:11,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-11-28 23:45:11,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:11,033 INFO L225 Difference]: With dead ends: 6189 [2023-11-28 23:45:11,033 INFO L226 Difference]: Without dead ends: 4420 [2023-11-28 23:45:11,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:45:11,038 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1628 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 4006 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 4075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:11,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 2186 Invalid, 4075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4006 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-28 23:45:11,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2023-11-28 23:45:11,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 3176. [2023-11-28 23:45:11,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3176 states, 2908 states have (on average 1.6282668500687758) internal successors, (4735), 2918 states have internal predecessors, (4735), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2023-11-28 23:45:11,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 5178 transitions. [2023-11-28 23:45:11,192 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 5178 transitions. Word has length 172 [2023-11-28 23:45:11,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:11,193 INFO L495 AbstractCegarLoop]: Abstraction has 3176 states and 5178 transitions. [2023-11-28 23:45:11,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:11,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 5178 transitions. [2023-11-28 23:45:11,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-28 23:45:11,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:11,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:11,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-28 23:45:11,195 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:11,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1883548794, now seen corresponding path program 1 times [2023-11-28 23:45:11,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:11,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760784054] [2023-11-28 23:45:11,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:11,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 23:45:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:45:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:45:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-28 23:45:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:11,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:11,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760784054] [2023-11-28 23:45:11,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760784054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:11,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:11,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:45:11,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360310184] [2023-11-28 23:45:11,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:11,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:45:11,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:11,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:45:11,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:45:11,504 INFO L87 Difference]: Start difference. First operand 3176 states and 5178 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:15,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:15,963 INFO L93 Difference]: Finished difference Result 11302 states and 18716 transitions. [2023-11-28 23:45:15,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:45:15,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-11-28 23:45:15,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:15,985 INFO L225 Difference]: With dead ends: 11302 [2023-11-28 23:45:15,985 INFO L226 Difference]: Without dead ends: 8146 [2023-11-28 23:45:15,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:45:15,994 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 1756 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 3304 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 3415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:15,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1776 Valid, 1416 Invalid, 3415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3304 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-28 23:45:16,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8146 states. [2023-11-28 23:45:16,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8146 to 5955. [2023-11-28 23:45:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5955 states, 5455 states have (on average 1.625114573785518) internal successors, (8865), 5473 states have internal predecessors, (8865), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-11-28 23:45:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5955 states to 5955 states and 9722 transitions. [2023-11-28 23:45:16,319 INFO L78 Accepts]: Start accepts. Automaton has 5955 states and 9722 transitions. Word has length 172 [2023-11-28 23:45:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:16,320 INFO L495 AbstractCegarLoop]: Abstraction has 5955 states and 9722 transitions. [2023-11-28 23:45:16,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:16,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5955 states and 9722 transitions. [2023-11-28 23:45:16,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-28 23:45:16,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:16,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:16,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-28 23:45:16,325 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:16,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1088239556, now seen corresponding path program 1 times [2023-11-28 23:45:16,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:16,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584737684] [2023-11-28 23:45:16,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:16,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:16,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:16,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 23:45:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:16,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:45:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:16,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:45:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:16,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-28 23:45:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:16,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:16,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584737684] [2023-11-28 23:45:16,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584737684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:16,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:16,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:45:16,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427379743] [2023-11-28 23:45:16,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:16,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:45:16,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:16,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:45:16,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:45:16,609 INFO L87 Difference]: Start difference. First operand 5955 states and 9722 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:22,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:22,044 INFO L93 Difference]: Finished difference Result 21512 states and 35654 transitions. [2023-11-28 23:45:22,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:45:22,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-11-28 23:45:22,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:22,101 INFO L225 Difference]: With dead ends: 21512 [2023-11-28 23:45:22,101 INFO L226 Difference]: Without dead ends: 15577 [2023-11-28 23:45:22,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:45:22,120 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1626 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3964 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 4033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:22,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1646 Valid, 2186 Invalid, 4033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3964 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-28 23:45:22,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15577 states. [2023-11-28 23:45:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15577 to 11543. [2023-11-28 23:45:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11543 states, 10579 states have (on average 1.6236884393609983) internal successors, (17177), 10613 states have internal predecessors, (17177), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2023-11-28 23:45:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11543 states to 11543 states and 18916 transitions. [2023-11-28 23:45:22,842 INFO L78 Accepts]: Start accepts. Automaton has 11543 states and 18916 transitions. Word has length 172 [2023-11-28 23:45:22,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:22,842 INFO L495 AbstractCegarLoop]: Abstraction has 11543 states and 18916 transitions. [2023-11-28 23:45:22,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:22,842 INFO L276 IsEmpty]: Start isEmpty. Operand 11543 states and 18916 transitions. [2023-11-28 23:45:22,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-28 23:45:22,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:22,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:22,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-28 23:45:22,850 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:22,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:22,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1426527106, now seen corresponding path program 1 times [2023-11-28 23:45:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:22,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533405705] [2023-11-28 23:45:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:22,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:23,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 23:45:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:23,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:45:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:23,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:45:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:23,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-28 23:45:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:23,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:23,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533405705] [2023-11-28 23:45:23,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533405705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:23,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:23,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:45:23,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653079705] [2023-11-28 23:45:23,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:23,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:45:23,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:23,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:45:23,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:45:23,155 INFO L87 Difference]: Start difference. First operand 11543 states and 18916 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:28,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:28,710 INFO L93 Difference]: Finished difference Result 41966 states and 69786 transitions. [2023-11-28 23:45:28,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:45:28,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-11-28 23:45:28,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:28,794 INFO L225 Difference]: With dead ends: 41966 [2023-11-28 23:45:28,794 INFO L226 Difference]: Without dead ends: 30443 [2023-11-28 23:45:28,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:45:28,817 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1625 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3951 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 4020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:28,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 2186 Invalid, 4020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3951 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-28 23:45:28,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30443 states. [2023-11-28 23:45:30,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30443 to 22748. [2023-11-28 23:45:30,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22748 states, 20856 states have (on average 1.622698504027618) internal successors, (33843), 20922 states have internal predecessors, (33843), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2023-11-28 23:45:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22748 states to 22748 states and 37508 transitions. [2023-11-28 23:45:30,119 INFO L78 Accepts]: Start accepts. Automaton has 22748 states and 37508 transitions. Word has length 172 [2023-11-28 23:45:30,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:30,119 INFO L495 AbstractCegarLoop]: Abstraction has 22748 states and 37508 transitions. [2023-11-28 23:45:30,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:30,119 INFO L276 IsEmpty]: Start isEmpty. Operand 22748 states and 37508 transitions. [2023-11-28 23:45:30,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-28 23:45:30,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:30,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:30,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-28 23:45:30,130 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:30,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:30,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1853081604, now seen corresponding path program 1 times [2023-11-28 23:45:30,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:30,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230199921] [2023-11-28 23:45:30,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:30,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:30,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:30,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 23:45:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:30,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:45:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:30,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:45:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-28 23:45:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:30,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:30,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230199921] [2023-11-28 23:45:30,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230199921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:30,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:30,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:45:30,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272639834] [2023-11-28 23:45:30,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:30,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:45:30,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:30,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:45:30,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:45:30,427 INFO L87 Difference]: Start difference. First operand 22748 states and 37508 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:36,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:36,833 INFO L93 Difference]: Finished difference Result 82873 states and 138648 transitions. [2023-11-28 23:45:36,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:45:36,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-11-28 23:45:36,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:37,037 INFO L225 Difference]: With dead ends: 82873 [2023-11-28 23:45:37,037 INFO L226 Difference]: Without dead ends: 60145 [2023-11-28 23:45:37,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:45:37,075 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1624 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3938 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 4007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:37,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1644 Valid, 2186 Invalid, 4007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3938 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-28 23:45:37,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60145 states. [2023-11-28 23:45:39,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60145 to 45221. [2023-11-28 23:45:39,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45221 states, 41473 states have (on average 1.6219950329129795) internal successors, (67269), 41603 states have internal predecessors, (67269), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2023-11-28 23:45:39,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45221 states to 45221 states and 75272 transitions. [2023-11-28 23:45:39,702 INFO L78 Accepts]: Start accepts. Automaton has 45221 states and 75272 transitions. Word has length 172 [2023-11-28 23:45:39,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:39,702 INFO L495 AbstractCegarLoop]: Abstraction has 45221 states and 75272 transitions. [2023-11-28 23:45:39,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 45221 states and 75272 transitions. [2023-11-28 23:45:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-28 23:45:39,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:39,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:39,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-28 23:45:39,721 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:39,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:39,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1312652098, now seen corresponding path program 1 times [2023-11-28 23:45:39,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:39,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689229334] [2023-11-28 23:45:39,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:39,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:39,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:39,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 23:45:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:39,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:45:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:39,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:45:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:40,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-28 23:45:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:40,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:40,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689229334] [2023-11-28 23:45:40,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689229334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:40,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:40,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:45:40,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192397853] [2023-11-28 23:45:40,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:40,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:45:40,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:40,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:45:40,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:45:40,011 INFO L87 Difference]: Start difference. First operand 45221 states and 75272 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:48,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:48,583 INFO L93 Difference]: Finished difference Result 164688 states and 278222 transitions. [2023-11-28 23:45:48,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:45:48,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-11-28 23:45:48,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:48,964 INFO L225 Difference]: With dead ends: 164688 [2023-11-28 23:45:48,964 INFO L226 Difference]: Without dead ends: 119487 [2023-11-28 23:45:49,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:45:49,103 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1623 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3925 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 3994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:49,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1643 Valid, 2186 Invalid, 3994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3925 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-28 23:45:49,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119487 states. [2023-11-28 23:45:54,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119487 to 90294. [2023-11-28 23:45:54,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90294 states, 82834 states have (on average 1.6214477147065214) internal successors, (134311), 83092 states have internal predecessors, (134311), 5661 states have call successors, (5661), 1543 states have call predecessors, (5661), 1798 states have return successors, (12476), 5914 states have call predecessors, (12476), 5659 states have call successors, (12476) [2023-11-28 23:45:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90294 states to 90294 states and 152448 transitions. [2023-11-28 23:45:54,856 INFO L78 Accepts]: Start accepts. Automaton has 90294 states and 152448 transitions. Word has length 172 [2023-11-28 23:45:54,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:54,856 INFO L495 AbstractCegarLoop]: Abstraction has 90294 states and 152448 transitions. [2023-11-28 23:45:54,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:45:54,856 INFO L276 IsEmpty]: Start isEmpty. Operand 90294 states and 152448 transitions. [2023-11-28 23:45:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-28 23:45:54,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:54,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:54,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-28 23:45:54,896 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:54,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:54,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1156671556, now seen corresponding path program 1 times [2023-11-28 23:45:54,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:54,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653815762] [2023-11-28 23:45:54,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:54,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:54,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:55,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 23:45:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:55,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:45:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:55,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:45:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:55,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-28 23:45:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:55,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:55,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653815762] [2023-11-28 23:45:55,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653815762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:55,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:55,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:45:55,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723929863] [2023-11-28 23:45:55,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:55,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:45:55,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:55,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:45:55,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:45:55,183 INFO L87 Difference]: Start difference. First operand 90294 states and 152448 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:46:08,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:46:08,146 INFO L93 Difference]: Finished difference Result 328319 states and 563012 transitions. [2023-11-28 23:46:08,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:46:08,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-11-28 23:46:08,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:46:09,239 INFO L225 Difference]: With dead ends: 328319 [2023-11-28 23:46:09,239 INFO L226 Difference]: Without dead ends: 238045 [2023-11-28 23:46:09,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:46:09,472 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1622 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3912 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 3981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:46:09,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 2186 Invalid, 3981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3912 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-28 23:46:09,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238045 states. [2023-11-28 23:46:19,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238045 to 180695. [2023-11-28 23:46:19,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180695 states, 165811 states have (on average 1.620984132536442) internal successors, (268777), 166325 states have internal predecessors, (268777), 11293 states have call successors, (11293), 3079 states have call predecessors, (11293), 3590 states have return successors, (31486), 11802 states have call predecessors, (31486), 11291 states have call successors, (31486) [2023-11-28 23:46:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180695 states to 180695 states and 311556 transitions. [2023-11-28 23:46:20,902 INFO L78 Accepts]: Start accepts. Automaton has 180695 states and 311556 transitions. Word has length 172 [2023-11-28 23:46:20,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:46:20,903 INFO L495 AbstractCegarLoop]: Abstraction has 180695 states and 311556 transitions. [2023-11-28 23:46:20,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:46:20,903 INFO L276 IsEmpty]: Start isEmpty. Operand 180695 states and 311556 transitions. [2023-11-28 23:46:20,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-28 23:46:20,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:46:20,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:46:20,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-28 23:46:20,990 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:46:20,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:46:20,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1567281922, now seen corresponding path program 1 times [2023-11-28 23:46:20,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:46:20,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008507792] [2023-11-28 23:46:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:46:20,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:46:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:21,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:46:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:21,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 23:46:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:21,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:46:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:21,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:46:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:21,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-28 23:46:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:46:21,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:46:21,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008507792] [2023-11-28 23:46:21,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008507792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:46:21,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:46:21,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:46:21,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924224617] [2023-11-28 23:46:21,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:46:21,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:46:21,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:46:21,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:46:21,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:46:21,306 INFO L87 Difference]: Start difference. First operand 180695 states and 311556 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:46:44,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:46:44,618 INFO L93 Difference]: Finished difference Result 655582 states and 1149706 transitions. [2023-11-28 23:46:44,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:46:44,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-11-28 23:46:44,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:46:47,073 INFO L225 Difference]: With dead ends: 655582 [2023-11-28 23:46:47,073 INFO L226 Difference]: Without dead ends: 474907 [2023-11-28 23:46:48,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:46:48,098 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 1621 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 3899 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 3968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:46:48,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 2186 Invalid, 3968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3899 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-28 23:46:48,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474907 states. [2023-11-28 23:47:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474907 to 362008. [2023-11-28 23:47:14,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362008 states, 332276 states have (on average 1.6205654335552373) internal successors, (538475), 333302 states have internal predecessors, (538475), 22557 states have call successors, (22557), 6151 states have call predecessors, (22557), 7174 states have return successors, (82628), 23578 states have call predecessors, (82628), 22555 states have call successors, (82628) [2023-11-28 23:47:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362008 states to 362008 states and 643660 transitions. [2023-11-28 23:47:17,108 INFO L78 Accepts]: Start accepts. Automaton has 362008 states and 643660 transitions. Word has length 172 [2023-11-28 23:47:17,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:47:17,109 INFO L495 AbstractCegarLoop]: Abstraction has 362008 states and 643660 transitions. [2023-11-28 23:47:17,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:47:17,109 INFO L276 IsEmpty]: Start isEmpty. Operand 362008 states and 643660 transitions. [2023-11-28 23:47:17,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-28 23:47:17,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:47:17,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:47:17,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-28 23:47:17,469 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:47:17,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:47:17,470 INFO L85 PathProgramCache]: Analyzing trace with hash -220587900, now seen corresponding path program 1 times [2023-11-28 23:47:17,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:47:17,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425913524] [2023-11-28 23:47:17,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:47:17,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:47:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:17,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:47:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:17,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 23:47:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:17,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:47:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:17,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:47:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:17,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-28 23:47:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:47:17,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:47:17,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425913524] [2023-11-28 23:47:17,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425913524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:47:17,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:47:17,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:47:17,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099321274] [2023-11-28 23:47:17,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:47:17,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:47:17,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:47:17,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:47:17,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:47:17,783 INFO L87 Difference]: Start difference. First operand 362008 states and 643660 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:48:02,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:48:02,904 INFO L93 Difference]: Finished difference Result 1310109 states and 2374816 transitions. [2023-11-28 23:48:02,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:48:02,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-11-28 23:48:02,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:48:08,732 INFO L225 Difference]: With dead ends: 1310109 [2023-11-28 23:48:08,732 INFO L226 Difference]: Without dead ends: 948121 [2023-11-28 23:48:10,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:48:10,708 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 1735 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 3237 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1755 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 3348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:48:10,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1755 Valid, 1416 Invalid, 3348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3237 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-28 23:48:11,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948121 states. [2023-11-28 23:49:00,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948121 to 725657. [2023-11-28 23:49:01,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725657 states, 666229 states have (on average 1.620171142354956) internal successors, (1079405), 668279 states have internal predecessors, (1079405), 45085 states have call successors, (45085), 12295 states have call predecessors, (45085), 14342 states have return successors, (224278), 47130 states have call predecessors, (224278), 45083 states have call successors, (224278) [2023-11-28 23:49:07,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725657 states to 725657 states and 1348768 transitions. [2023-11-28 23:49:07,382 INFO L78 Accepts]: Start accepts. Automaton has 725657 states and 1348768 transitions. Word has length 172 [2023-11-28 23:49:07,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:49:07,382 INFO L495 AbstractCegarLoop]: Abstraction has 725657 states and 1348768 transitions. [2023-11-28 23:49:07,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:49:07,382 INFO L276 IsEmpty]: Start isEmpty. Operand 725657 states and 1348768 transitions. [2023-11-28 23:49:07,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-28 23:49:07,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:49:07,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:49:07,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-28 23:49:07,654 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:49:07,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:49:07,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1938496194, now seen corresponding path program 1 times [2023-11-28 23:49:07,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:49:07,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896225176] [2023-11-28 23:49:07,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:49:07,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:49:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:07,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:49:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:07,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 23:49:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:07,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:49:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:07,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:49:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:07,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-28 23:49:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:49:07,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:49:07,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896225176] [2023-11-28 23:49:07,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896225176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:49:07,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:49:07,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:49:07,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898788637] [2023-11-28 23:49:07,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:49:07,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:49:07,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:49:07,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:49:07,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:49:07,958 INFO L87 Difference]: Start difference. First operand 725657 states and 1348768 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)