./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu --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 41c8a8bc6e14c971558b90999312edb800c79ff966f34c4894803ada36cfe43c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:33:26,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:33:26,829 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:33:26,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:33:26,843 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:33:26,884 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:33:26,885 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:33:26,886 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:33:26,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:33:26,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:33:26,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:33:26,894 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:33:26,895 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:33:26,897 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:33:26,897 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:33:26,898 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:33:26,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:33:26,899 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:33:26,899 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:33:26,900 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:33:26,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:33:26,901 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:33:26,901 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:33:26,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:33:26,902 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:33:26,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:33:26,904 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:33:26,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:33:26,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:26,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:33:26,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:33:26,922 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:33:26,922 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:33:26,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:33:26,923 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:33:26,923 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:33:26,923 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:33:26,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:33:26,924 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:33:26,924 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_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41c8a8bc6e14c971558b90999312edb800c79ff966f34c4894803ada36cfe43c [2023-11-19 07:33:27,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:33:27,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:33:27,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:33:27,235 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:33:27,236 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:33:27,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-2.c [2023-11-19 07:33:30,314 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:33:30,662 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:33:30,663 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-2.c [2023-11-19 07:33:30,688 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/data/7940a5205/c44beb365a984477a2b2a9263e3c1ad6/FLAG3c519934d [2023-11-19 07:33:30,708 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/data/7940a5205/c44beb365a984477a2b2a9263e3c1ad6 [2023-11-19 07:33:30,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:33:30,716 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:33:30,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:30,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:33:30,727 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:33:30,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:30" (1/1) ... [2023-11-19 07:33:30,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd78cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:30, skipping insertion in model container [2023-11-19 07:33:30,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:30" (1/1) ... [2023-11-19 07:33:30,788 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:33:30,951 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_cd37a215-8837-4568-9b32-a2375e1ac93c/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-2.c[911,924] [2023-11-19 07:33:31,018 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_cd37a215-8837-4568-9b32-a2375e1ac93c/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-2.c[8416,8429] [2023-11-19 07:33:31,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:31,079 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:33:31,091 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_cd37a215-8837-4568-9b32-a2375e1ac93c/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-2.c[911,924] [2023-11-19 07:33:31,119 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_cd37a215-8837-4568-9b32-a2375e1ac93c/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.01.cil-2.c[8416,8429] [2023-11-19 07:33:31,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:31,166 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:33:31,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:31 WrapperNode [2023-11-19 07:33:31,167 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:31,168 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:31,168 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:33:31,169 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:33:31,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:31" (1/1) ... [2023-11-19 07:33:31,195 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:31" (1/1) ... [2023-11-19 07:33:31,248 INFO L138 Inliner]: procedures = 57, calls = 65, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 454 [2023-11-19 07:33:31,249 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:31,249 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:33:31,250 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:33:31,250 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:33:31,260 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:31" (1/1) ... [2023-11-19 07:33:31,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:31" (1/1) ... [2023-11-19 07:33:31,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:31" (1/1) ... [2023-11-19 07:33:31,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:31" (1/1) ... [2023-11-19 07:33:31,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:31" (1/1) ... [2023-11-19 07:33:31,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:31" (1/1) ... [2023-11-19 07:33:31,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:31" (1/1) ... [2023-11-19 07:33:31,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:31" (1/1) ... [2023-11-19 07:33:31,294 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:33:31,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:33:31,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:33:31,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:33:31,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:31" (1/1) ... [2023-11-19 07:33:31,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:31,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:31,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:31,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:33:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:33:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-19 07:33:31,379 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-19 07:33:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-19 07:33:31,379 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-19 07:33:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-19 07:33:31,380 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-19 07:33:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-19 07:33:31,380 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-19 07:33:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-19 07:33:31,380 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-19 07:33:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-19 07:33:31,380 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-19 07:33:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-19 07:33:31,381 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-19 07:33:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-19 07:33:31,381 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-19 07:33:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-19 07:33:31,381 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-19 07:33:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-19 07:33:31,383 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-19 07:33:31,384 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-19 07:33:31,384 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-19 07:33:31,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:33:31,385 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-19 07:33:31,385 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-19 07:33:31,386 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-19 07:33:31,387 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-19 07:33:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:33:31,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:33:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-19 07:33:31,389 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-19 07:33:31,389 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-11-19 07:33:31,389 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-11-19 07:33:31,490 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:33:31,495 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:33:32,025 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-11-19 07:33:32,026 INFO L767 $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; [2023-11-19 07:33:32,100 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:33:32,116 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:33:32,116 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-19 07:33:32,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:32 BoogieIcfgContainer [2023-11-19 07:33:32,129 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:33:32,132 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:33:32,132 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:33:32,136 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:33:32,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:30" (1/3) ... [2023-11-19 07:33:32,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec112fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:32, skipping insertion in model container [2023-11-19 07:33:32,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:31" (2/3) ... [2023-11-19 07:33:32,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec112fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:32, skipping insertion in model container [2023-11-19 07:33:32,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:32" (3/3) ... [2023-11-19 07:33:32,141 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.01.cil-2.c [2023-11-19 07:33:32,165 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:33:32,165 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:33:32,237 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:33:32,244 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;@20bfaa02, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:33:32,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 07:33:32,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 183 states have (on average 1.540983606557377) internal successors, (282), 191 states have internal predecessors, (282), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-19 07:33:32,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 07:33:32,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:32,263 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] [2023-11-19 07:33:32,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:32,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:32,269 INFO L85 PathProgramCache]: Analyzing trace with hash 55297287, now seen corresponding path program 1 times [2023-11-19 07:33:32,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:32,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523219175] [2023-11-19 07:33:32,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:32,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:32,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:32,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:33:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:32,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:32,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:33:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:32,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:33:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:32,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:32,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523219175] [2023-11-19 07:33:32,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523219175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:32,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:32,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:33:32,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653491113] [2023-11-19 07:33:32,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:32,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:33:32,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:33,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:33:33,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:33:33,031 INFO L87 Difference]: Start difference. First operand has 234 states, 183 states have (on average 1.540983606557377) internal successors, (282), 191 states have internal predecessors, (282), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 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) [2023-11-19 07:33:34,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:34,131 INFO L93 Difference]: Finished difference Result 590 states and 890 transitions. [2023-11-19 07:33:34,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:33:34,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 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 58 [2023-11-19 07:33:34,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:34,162 INFO L225 Difference]: With dead ends: 590 [2023-11-19 07:33:34,162 INFO L226 Difference]: Without dead ends: 363 [2023-11-19 07:33:34,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:33:34,171 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 582 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:34,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 745 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:33:34,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-19 07:33:34,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 320. [2023-11-19 07:33:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 255 states have (on average 1.4549019607843137) internal successors, (371), 261 states have internal predecessors, (371), 43 states have call successors, (43), 21 states have call predecessors, (43), 20 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2023-11-19 07:33:34,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 456 transitions. [2023-11-19 07:33:34,261 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 456 transitions. Word has length 58 [2023-11-19 07:33:34,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:34,261 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 456 transitions. [2023-11-19 07:33:34,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 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) [2023-11-19 07:33:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 456 transitions. [2023-11-19 07:33:34,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 07:33:34,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:34,266 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] [2023-11-19 07:33:34,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:33:34,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:34,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:34,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1849556483, now seen corresponding path program 1 times [2023-11-19 07:33:34,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:34,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528404872] [2023-11-19 07:33:34,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:34,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:33:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:33:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:33:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:34,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:34,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528404872] [2023-11-19 07:33:34,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528404872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:34,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:34,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:33:34,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723667382] [2023-11-19 07:33:34,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:34,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:33:34,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:33:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:33:34,488 INFO L87 Difference]: Start difference. First operand 320 states and 456 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-11-19 07:33:35,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:35,638 INFO L93 Difference]: Finished difference Result 677 states and 970 transitions. [2023-11-19 07:33:35,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:33:35,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 58 [2023-11-19 07:33:35,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:35,644 INFO L225 Difference]: With dead ends: 677 [2023-11-19 07:33:35,644 INFO L226 Difference]: Without dead ends: 478 [2023-11-19 07:33:35,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:33:35,648 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 561 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:35,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1109 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:33:35,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-11-19 07:33:35,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 412. [2023-11-19 07:33:35,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 330 states have (on average 1.4484848484848485) internal successors, (478), 337 states have internal predecessors, (478), 53 states have call successors, (53), 27 states have call predecessors, (53), 27 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2023-11-19 07:33:35,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 585 transitions. [2023-11-19 07:33:35,705 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 585 transitions. Word has length 58 [2023-11-19 07:33:35,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:35,705 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 585 transitions. [2023-11-19 07:33:35,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-11-19 07:33:35,706 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 585 transitions. [2023-11-19 07:33:35,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 07:33:35,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:35,709 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] [2023-11-19 07:33:35,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:33:35,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:35,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:35,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1551924475, now seen corresponding path program 1 times [2023-11-19 07:33:35,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:35,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727479506] [2023-11-19 07:33:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:35,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:35,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:35,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:33:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:35,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:35,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:33:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:35,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:33:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:35,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:35,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727479506] [2023-11-19 07:33:35,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727479506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:35,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:35,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:33:35,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254553243] [2023-11-19 07:33:35,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:35,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:33:35,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:35,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:33:35,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:33:35,898 INFO L87 Difference]: Start difference. First operand 412 states and 585 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-11-19 07:33:36,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:36,474 INFO L93 Difference]: Finished difference Result 765 states and 1099 transitions. [2023-11-19 07:33:36,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:33:36,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 58 [2023-11-19 07:33:36,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:36,482 INFO L225 Difference]: With dead ends: 765 [2023-11-19 07:33:36,482 INFO L226 Difference]: Without dead ends: 474 [2023-11-19 07:33:36,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:33:36,487 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 508 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:36,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 723 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:33:36,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-11-19 07:33:36,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 412. [2023-11-19 07:33:36,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 330 states have (on average 1.4393939393939394) internal successors, (475), 337 states have internal predecessors, (475), 53 states have call successors, (53), 27 states have call predecessors, (53), 27 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2023-11-19 07:33:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 582 transitions. [2023-11-19 07:33:36,542 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 582 transitions. Word has length 58 [2023-11-19 07:33:36,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:36,543 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 582 transitions. [2023-11-19 07:33:36,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-11-19 07:33:36,543 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 582 transitions. [2023-11-19 07:33:36,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 07:33:36,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:36,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:36,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:33:36,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:36,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:36,554 INFO L85 PathProgramCache]: Analyzing trace with hash 693654979, now seen corresponding path program 1 times [2023-11-19 07:33:36,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:36,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948832801] [2023-11-19 07:33:36,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:36,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:36,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:36,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:33:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:36,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:36,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:33:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:36,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:33:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:36,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:36,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948832801] [2023-11-19 07:33:36,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948832801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:36,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:36,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:33:36,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203179521] [2023-11-19 07:33:36,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:36,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:33:36,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:36,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:33:36,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:33:36,728 INFO L87 Difference]: Start difference. First operand 412 states and 582 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-11-19 07:33:37,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:37,463 INFO L93 Difference]: Finished difference Result 801 states and 1156 transitions. [2023-11-19 07:33:37,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:33:37,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 58 [2023-11-19 07:33:37,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:37,470 INFO L225 Difference]: With dead ends: 801 [2023-11-19 07:33:37,470 INFO L226 Difference]: Without dead ends: 511 [2023-11-19 07:33:37,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:33:37,482 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 277 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:37,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1002 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:33:37,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2023-11-19 07:33:37,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 421. [2023-11-19 07:33:37,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 339 states have (on average 1.4277286135693215) internal successors, (484), 346 states have internal predecessors, (484), 53 states have call successors, (53), 27 states have call predecessors, (53), 27 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2023-11-19 07:33:37,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 591 transitions. [2023-11-19 07:33:37,571 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 591 transitions. Word has length 58 [2023-11-19 07:33:37,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:37,572 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 591 transitions. [2023-11-19 07:33:37,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-11-19 07:33:37,572 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 591 transitions. [2023-11-19 07:33:37,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 07:33:37,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:37,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:37,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:33:37,575 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:37,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:37,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1550328319, now seen corresponding path program 1 times [2023-11-19 07:33:37,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:37,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565831912] [2023-11-19 07:33:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:37,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:37,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:37,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:33:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:37,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:33:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:37,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:33:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:37,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:37,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:37,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565831912] [2023-11-19 07:33:37,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565831912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:37,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:37,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:33:37,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300915029] [2023-11-19 07:33:37,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:37,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:33:37,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:37,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:33:37,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:33:37,758 INFO L87 Difference]: Start difference. First operand 421 states and 591 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-11-19 07:33:39,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:39,028 INFO L93 Difference]: Finished difference Result 1617 states and 2340 transitions. [2023-11-19 07:33:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:33:39,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 58 [2023-11-19 07:33:39,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:39,038 INFO L225 Difference]: With dead ends: 1617 [2023-11-19 07:33:39,039 INFO L226 Difference]: Without dead ends: 1318 [2023-11-19 07:33:39,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:33:39,042 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 1030 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:39,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 907 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:33:39,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2023-11-19 07:33:39,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1147. [2023-11-19 07:33:39,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 918 states have (on average 1.3769063180827887) internal successors, (1264), 940 states have internal predecessors, (1264), 140 states have call successors, (140), 81 states have call predecessors, (140), 87 states have return successors, (189), 128 states have call predecessors, (189), 136 states have call successors, (189) [2023-11-19 07:33:39,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1593 transitions. [2023-11-19 07:33:39,163 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1593 transitions. Word has length 58 [2023-11-19 07:33:39,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:39,164 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 1593 transitions. [2023-11-19 07:33:39,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-11-19 07:33:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1593 transitions. [2023-11-19 07:33:39,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 07:33:39,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:39,166 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] [2023-11-19 07:33:39,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:33:39,167 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:39,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:39,167 INFO L85 PathProgramCache]: Analyzing trace with hash -779809660, now seen corresponding path program 1 times [2023-11-19 07:33:39,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:39,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220980993] [2023-11-19 07:33:39,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:39,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:33:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:33:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:33:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-19 07:33:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-19 07:33:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:39,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:39,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:39,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220980993] [2023-11-19 07:33:39,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220980993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:39,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:39,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:33:39,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028512621] [2023-11-19 07:33:39,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:39,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:33:39,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:39,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:33:39,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:33:39,308 INFO L87 Difference]: Start difference. First operand 1147 states and 1593 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 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) [2023-11-19 07:33:40,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:40,217 INFO L93 Difference]: Finished difference Result 1402 states and 1963 transitions. [2023-11-19 07:33:40,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:33:40,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 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 65 [2023-11-19 07:33:40,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:40,228 INFO L225 Difference]: With dead ends: 1402 [2023-11-19 07:33:40,228 INFO L226 Difference]: Without dead ends: 1298 [2023-11-19 07:33:40,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:33:40,231 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 635 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:40,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 946 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:33:40,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2023-11-19 07:33:40,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1259. [2023-11-19 07:33:40,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1008 states have (on average 1.3799603174603174) internal successors, (1391), 1032 states have internal predecessors, (1391), 153 states have call successors, (153), 88 states have call predecessors, (153), 96 states have return successors, (207), 142 states have call predecessors, (207), 149 states have call successors, (207) [2023-11-19 07:33:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1751 transitions. [2023-11-19 07:33:40,373 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1751 transitions. Word has length 65 [2023-11-19 07:33:40,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:40,374 INFO L495 AbstractCegarLoop]: Abstraction has 1259 states and 1751 transitions. [2023-11-19 07:33:40,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 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) [2023-11-19 07:33:40,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1751 transitions. [2023-11-19 07:33:40,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 07:33:40,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:40,376 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] [2023-11-19 07:33:40,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:33:40,376 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:40,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:40,377 INFO L85 PathProgramCache]: Analyzing trace with hash 899078980, now seen corresponding path program 1 times [2023-11-19 07:33:40,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:40,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291200701] [2023-11-19 07:33:40,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:40,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:40,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:40,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:40,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:33:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:40,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:33:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:40,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:33:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:40,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-19 07:33:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:40,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-19 07:33:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:40,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:40,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:40,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291200701] [2023-11-19 07:33:40,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291200701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:40,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:40,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:33:40,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688964556] [2023-11-19 07:33:40,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:40,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:33:40,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:40,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:33:40,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:33:40,544 INFO L87 Difference]: Start difference. First operand 1259 states and 1751 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 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) [2023-11-19 07:33:41,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:41,719 INFO L93 Difference]: Finished difference Result 1656 states and 2317 transitions. [2023-11-19 07:33:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:33:41,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 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 65 [2023-11-19 07:33:41,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:41,731 INFO L225 Difference]: With dead ends: 1656 [2023-11-19 07:33:41,731 INFO L226 Difference]: Without dead ends: 1447 [2023-11-19 07:33:41,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:33:41,734 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 596 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:41,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 1343 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:33:41,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2023-11-19 07:33:41,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1371. [2023-11-19 07:33:41,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1098 states have (on average 1.3816029143897997) internal successors, (1517), 1124 states have internal predecessors, (1517), 166 states have call successors, (166), 95 states have call predecessors, (166), 105 states have return successors, (228), 156 states have call predecessors, (228), 162 states have call successors, (228) [2023-11-19 07:33:41,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1911 transitions. [2023-11-19 07:33:41,870 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1911 transitions. Word has length 65 [2023-11-19 07:33:41,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:41,871 INFO L495 AbstractCegarLoop]: Abstraction has 1371 states and 1911 transitions. [2023-11-19 07:33:41,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 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) [2023-11-19 07:33:41,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1911 transitions. [2023-11-19 07:33:41,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 07:33:41,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:41,874 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] [2023-11-19 07:33:41,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:33:41,874 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:41,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:41,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1129507130, now seen corresponding path program 1 times [2023-11-19 07:33:41,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:41,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355377726] [2023-11-19 07:33:41,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:41,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:41,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:41,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:41,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:33:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:41,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:33:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:42,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:33:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:42,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-19 07:33:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:42,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-19 07:33:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:42,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:42,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355377726] [2023-11-19 07:33:42,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355377726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:42,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:42,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:33:42,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791015585] [2023-11-19 07:33:42,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:42,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:33:42,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:42,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:33:42,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:33:42,038 INFO L87 Difference]: Start difference. First operand 1371 states and 1911 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 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) [2023-11-19 07:33:43,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:43,968 INFO L93 Difference]: Finished difference Result 2917 states and 4109 transitions. [2023-11-19 07:33:43,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-19 07:33:43,969 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 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 65 [2023-11-19 07:33:43,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:43,985 INFO L225 Difference]: With dead ends: 2917 [2023-11-19 07:33:43,986 INFO L226 Difference]: Without dead ends: 2584 [2023-11-19 07:33:43,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-11-19 07:33:43,990 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 1975 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:43,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 1651 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:33:43,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2023-11-19 07:33:44,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 2424. [2023-11-19 07:33:44,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 1946 states have (on average 1.367420349434738) internal successors, (2661), 1987 states have internal predecessors, (2661), 276 states have call successors, (276), 178 states have call predecessors, (276), 200 states have return successors, (361), 262 states have call predecessors, (361), 272 states have call successors, (361) [2023-11-19 07:33:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 3298 transitions. [2023-11-19 07:33:44,298 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 3298 transitions. Word has length 65 [2023-11-19 07:33:44,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:44,299 INFO L495 AbstractCegarLoop]: Abstraction has 2424 states and 3298 transitions. [2023-11-19 07:33:44,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 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) [2023-11-19 07:33:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 3298 transitions. [2023-11-19 07:33:44,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 07:33:44,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:44,303 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] [2023-11-19 07:33:44,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:33:44,304 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:44,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1179458275, now seen corresponding path program 1 times [2023-11-19 07:33:44,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:44,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719643028] [2023-11-19 07:33:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:44,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:44,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:44,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:44,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:33:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:44,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:33:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:44,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:33:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:33:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:44,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-19 07:33:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:44,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:44,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719643028] [2023-11-19 07:33:44,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719643028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:44,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:44,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:33:44,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099309526] [2023-11-19 07:33:44,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:44,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:33:44,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:44,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:33:44,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:33:44,459 INFO L87 Difference]: Start difference. First operand 2424 states and 3298 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2023-11-19 07:33:45,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:45,386 INFO L93 Difference]: Finished difference Result 3952 states and 5377 transitions. [2023-11-19 07:33:45,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:33:45,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 66 [2023-11-19 07:33:45,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:45,407 INFO L225 Difference]: With dead ends: 3952 [2023-11-19 07:33:45,408 INFO L226 Difference]: Without dead ends: 2572 [2023-11-19 07:33:45,412 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 [2023-11-19 07:33:45,415 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 233 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:45,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1329 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:33:45,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2023-11-19 07:33:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2464. [2023-11-19 07:33:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 1978 states have (on average 1.3584428715874621) internal successors, (2687), 2019 states have internal predecessors, (2687), 276 states have call successors, (276), 178 states have call predecessors, (276), 208 states have return successors, (369), 270 states have call predecessors, (369), 272 states have call successors, (369) [2023-11-19 07:33:45,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 3332 transitions. [2023-11-19 07:33:45,793 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 3332 transitions. Word has length 66 [2023-11-19 07:33:45,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:45,794 INFO L495 AbstractCegarLoop]: Abstraction has 2464 states and 3332 transitions. [2023-11-19 07:33:45,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2023-11-19 07:33:45,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 3332 transitions. [2023-11-19 07:33:45,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 07:33:45,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:45,796 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] [2023-11-19 07:33:45,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:33:45,797 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:45,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:45,797 INFO L85 PathProgramCache]: Analyzing trace with hash 150098977, now seen corresponding path program 1 times [2023-11-19 07:33:45,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:45,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215227871] [2023-11-19 07:33:45,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:45,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:33:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:33:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:33:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 07:33:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-19 07:33:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:45,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:45,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215227871] [2023-11-19 07:33:45,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215227871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:45,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:45,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:33:45,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670542564] [2023-11-19 07:33:45,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:45,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:33:45,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:45,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:33:45,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:33:45,949 INFO L87 Difference]: Start difference. First operand 2464 states and 3332 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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) [2023-11-19 07:33:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:48,149 INFO L93 Difference]: Finished difference Result 6036 states and 8206 transitions. [2023-11-19 07:33:48,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-19 07:33:48,150 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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 66 [2023-11-19 07:33:48,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:48,169 INFO L225 Difference]: With dead ends: 6036 [2023-11-19 07:33:48,170 INFO L226 Difference]: Without dead ends: 2855 [2023-11-19 07:33:48,178 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 [2023-11-19 07:33:48,179 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 2042 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2060 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 1989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:48,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2060 Valid, 1700 Invalid, 1989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 07:33:48,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2023-11-19 07:33:48,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2675. [2023-11-19 07:33:48,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2117 states have (on average 1.3287671232876712) internal successors, (2813), 2160 states have internal predecessors, (2813), 316 states have call successors, (316), 206 states have call predecessors, (316), 240 states have return successors, (415), 312 states have call predecessors, (415), 312 states have call successors, (415) [2023-11-19 07:33:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 3544 transitions. [2023-11-19 07:33:48,540 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 3544 transitions. Word has length 66 [2023-11-19 07:33:48,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:48,541 INFO L495 AbstractCegarLoop]: Abstraction has 2675 states and 3544 transitions. [2023-11-19 07:33:48,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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) [2023-11-19 07:33:48,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 3544 transitions. [2023-11-19 07:33:48,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 07:33:48,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:48,545 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2023-11-19 07:33:48,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:33:48,545 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:48,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash 99128177, now seen corresponding path program 1 times [2023-11-19 07:33:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:48,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126652780] [2023-11-19 07:33:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:48,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:33:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:33:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:33:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:33:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-19 07:33:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 07:33:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:33:48,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:48,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126652780] [2023-11-19 07:33:48,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126652780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:48,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:48,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:33:48,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39849767] [2023-11-19 07:33:48,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:48,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:33:48,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:48,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:33:48,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:33:48,719 INFO L87 Difference]: Start difference. First operand 2675 states and 3544 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2023-11-19 07:33:49,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:49,802 INFO L93 Difference]: Finished difference Result 4500 states and 5946 transitions. [2023-11-19 07:33:49,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:33:49,803 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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 91 [2023-11-19 07:33:49,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:49,824 INFO L225 Difference]: With dead ends: 4500 [2023-11-19 07:33:49,825 INFO L226 Difference]: Without dead ends: 2869 [2023-11-19 07:33:49,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:33:49,830 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 226 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:49,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1280 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:33:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2023-11-19 07:33:50,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2735. [2023-11-19 07:33:50,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2165 states have (on average 1.3187066974595842) internal successors, (2855), 2208 states have internal predecessors, (2855), 316 states have call successors, (316), 206 states have call predecessors, (316), 252 states have return successors, (427), 324 states have call predecessors, (427), 312 states have call successors, (427) [2023-11-19 07:33:50,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 3598 transitions. [2023-11-19 07:33:50,149 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 3598 transitions. Word has length 91 [2023-11-19 07:33:50,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:50,150 INFO L495 AbstractCegarLoop]: Abstraction has 2735 states and 3598 transitions. [2023-11-19 07:33:50,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2023-11-19 07:33:50,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 3598 transitions. [2023-11-19 07:33:50,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 07:33:50,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:50,155 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2023-11-19 07:33:50,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:33:50,155 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:50,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:50,156 INFO L85 PathProgramCache]: Analyzing trace with hash 543028851, now seen corresponding path program 1 times [2023-11-19 07:33:50,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:50,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936629476] [2023-11-19 07:33:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:50,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:50,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:50,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:50,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:33:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:50,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:33:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:50,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:33:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:50,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:33:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:50,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-19 07:33:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:50,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 07:33:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:33:50,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936629476] [2023-11-19 07:33:50,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936629476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:50,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:50,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:33:50,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10698407] [2023-11-19 07:33:50,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:50,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:33:50,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:50,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:33:50,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:33:50,389 INFO L87 Difference]: Start difference. First operand 2735 states and 3598 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2023-11-19 07:33:51,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:51,558 INFO L93 Difference]: Finished difference Result 4262 states and 5562 transitions. [2023-11-19 07:33:51,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:33:51,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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 91 [2023-11-19 07:33:51,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:51,579 INFO L225 Difference]: With dead ends: 4262 [2023-11-19 07:33:51,580 INFO L226 Difference]: Without dead ends: 2809 [2023-11-19 07:33:51,584 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 [2023-11-19 07:33:51,585 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 739 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:51,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 883 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:33:51,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2023-11-19 07:33:51,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2514. [2023-11-19 07:33:51,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2514 states, 1997 states have (on average 1.3204807210816225) internal successors, (2637), 2035 states have internal predecessors, (2637), 288 states have call successors, (288), 187 states have call predecessors, (288), 227 states have return successors, (387), 294 states have call predecessors, (387), 284 states have call successors, (387) [2023-11-19 07:33:51,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3312 transitions. [2023-11-19 07:33:51,870 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3312 transitions. Word has length 91 [2023-11-19 07:33:51,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:51,871 INFO L495 AbstractCegarLoop]: Abstraction has 2514 states and 3312 transitions. [2023-11-19 07:33:51,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2023-11-19 07:33:51,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3312 transitions. [2023-11-19 07:33:51,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 07:33:51,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:51,874 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2023-11-19 07:33:51,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:33:51,875 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:51,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:51,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1812776399, now seen corresponding path program 1 times [2023-11-19 07:33:51,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:51,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264920429] [2023-11-19 07:33:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:51,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:51,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:51,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:33:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:51,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:33:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:51,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:33:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:51,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:33:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:51,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-19 07:33:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:51,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 07:33:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:51,998 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:33:51,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:51,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264920429] [2023-11-19 07:33:51,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264920429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:51,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:51,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:33:51,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730804983] [2023-11-19 07:33:51,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:52,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:33:52,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:52,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:33:52,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:33:52,002 INFO L87 Difference]: Start difference. First operand 2514 states and 3312 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 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) [2023-11-19 07:33:53,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:53,019 INFO L93 Difference]: Finished difference Result 5666 states and 7424 transitions. [2023-11-19 07:33:53,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:33:53,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 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 91 [2023-11-19 07:33:53,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:53,045 INFO L225 Difference]: With dead ends: 5666 [2023-11-19 07:33:53,046 INFO L226 Difference]: Without dead ends: 4197 [2023-11-19 07:33:53,051 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 [2023-11-19 07:33:53,052 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 530 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:53,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 891 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:33:53,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4197 states. [2023-11-19 07:33:53,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4197 to 3983. [2023-11-19 07:33:53,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3983 states, 3146 states have (on average 1.2921169739351557) internal successors, (4065), 3213 states have internal predecessors, (4065), 449 states have call successors, (449), 300 states have call predecessors, (449), 386 states have return successors, (670), 473 states have call predecessors, (670), 445 states have call successors, (670) [2023-11-19 07:33:53,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 5184 transitions. [2023-11-19 07:33:53,600 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 5184 transitions. Word has length 91 [2023-11-19 07:33:53,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:53,602 INFO L495 AbstractCegarLoop]: Abstraction has 3983 states and 5184 transitions. [2023-11-19 07:33:53,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 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) [2023-11-19 07:33:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 5184 transitions. [2023-11-19 07:33:53,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 07:33:53,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:53,606 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2023-11-19 07:33:53,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:33:53,606 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:53,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:53,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1424352819, now seen corresponding path program 1 times [2023-11-19 07:33:53,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:53,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313258270] [2023-11-19 07:33:53,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:53,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:53,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:53,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:53,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:33:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:53,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:33:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:53,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:33:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:53,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:33:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:53,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-19 07:33:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:53,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 07:33:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:33:53,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:53,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313258270] [2023-11-19 07:33:53,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313258270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:53,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:53,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:33:53,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002991388] [2023-11-19 07:33:53,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:53,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:33:53,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:53,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:33:53,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:33:53,706 INFO L87 Difference]: Start difference. First operand 3983 states and 5184 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-11-19 07:33:54,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:54,374 INFO L93 Difference]: Finished difference Result 5567 states and 7168 transitions. [2023-11-19 07:33:54,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:33:54,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 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 91 [2023-11-19 07:33:54,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:54,409 INFO L225 Difference]: With dead ends: 5567 [2023-11-19 07:33:54,409 INFO L226 Difference]: Without dead ends: 2629 [2023-11-19 07:33:54,417 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 [2023-11-19 07:33:54,417 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 441 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:54,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 550 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:33:54,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2023-11-19 07:33:54,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2514. [2023-11-19 07:33:54,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2514 states, 1997 states have (on average 1.3019529293940912) internal successors, (2600), 2035 states have internal predecessors, (2600), 288 states have call successors, (288), 187 states have call predecessors, (288), 227 states have return successors, (387), 294 states have call predecessors, (387), 284 states have call successors, (387) [2023-11-19 07:33:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3275 transitions. [2023-11-19 07:33:54,739 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3275 transitions. Word has length 91 [2023-11-19 07:33:54,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:54,739 INFO L495 AbstractCegarLoop]: Abstraction has 2514 states and 3275 transitions. [2023-11-19 07:33:54,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-11-19 07:33:54,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3275 transitions. [2023-11-19 07:33:54,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-19 07:33:54,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:54,742 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2023-11-19 07:33:54,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:33:54,743 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:54,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:54,744 INFO L85 PathProgramCache]: Analyzing trace with hash 696303197, now seen corresponding path program 1 times [2023-11-19 07:33:54,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:54,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477273196] [2023-11-19 07:33:54,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:54,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:54,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:54,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:33:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:54,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:33:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:54,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:33:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:54,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:33:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:54,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:33:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:54,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-19 07:33:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:54,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-19 07:33:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:33:54,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:54,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477273196] [2023-11-19 07:33:54,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477273196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:54,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:54,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:33:54,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069134356] [2023-11-19 07:33:54,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:54,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:33:54,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:54,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:33:54,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:33:54,906 INFO L87 Difference]: Start difference. First operand 2514 states and 3275 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 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) [2023-11-19 07:33:56,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:56,626 INFO L93 Difference]: Finished difference Result 4932 states and 6358 transitions. [2023-11-19 07:33:56,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-19 07:33:56,626 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 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 92 [2023-11-19 07:33:56,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:56,642 INFO L225 Difference]: With dead ends: 4932 [2023-11-19 07:33:56,642 INFO L226 Difference]: Without dead ends: 3312 [2023-11-19 07:33:56,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2023-11-19 07:33:56,648 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 1444 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:56,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 924 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:33:56,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3312 states. [2023-11-19 07:33:56,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3312 to 3135. [2023-11-19 07:33:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3135 states, 2464 states have (on average 1.2751623376623376) internal successors, (3142), 2510 states have internal predecessors, (3142), 365 states have call successors, (365), 235 states have call predecessors, (365), 304 states have return successors, (518), 392 states have call predecessors, (518), 361 states have call successors, (518) [2023-11-19 07:33:57,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 4025 transitions. [2023-11-19 07:33:57,004 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 4025 transitions. Word has length 92 [2023-11-19 07:33:57,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:57,005 INFO L495 AbstractCegarLoop]: Abstraction has 3135 states and 4025 transitions. [2023-11-19 07:33:57,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 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) [2023-11-19 07:33:57,005 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 4025 transitions. [2023-11-19 07:33:57,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 07:33:57,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:57,008 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:57,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:33:57,009 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:57,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:57,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1825525638, now seen corresponding path program 1 times [2023-11-19 07:33:57,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:57,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888499035] [2023-11-19 07:33:57,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:57,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:57,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:57,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:33:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:57,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:57,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:33:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:57,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:33:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:57,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:33:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:57,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 07:33:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:57,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-19 07:33:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-19 07:33:57,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:57,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888499035] [2023-11-19 07:33:57,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888499035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:57,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901878504] [2023-11-19 07:33:57,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:57,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:57,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:57,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:57,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:33:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:57,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:33:57,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 07:33:57,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:57,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901878504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:57,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:57,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-19 07:33:57,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084378740] [2023-11-19 07:33:57,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:57,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:57,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:57,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:57,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:33:57,380 INFO L87 Difference]: Start difference. First operand 3135 states and 4025 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:33:57,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:57,845 INFO L93 Difference]: Finished difference Result 5067 states and 6723 transitions. [2023-11-19 07:33:57,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:57,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2023-11-19 07:33:57,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:57,864 INFO L225 Difference]: With dead ends: 5067 [2023-11-19 07:33:57,864 INFO L226 Difference]: Without dead ends: 3387 [2023-11-19 07:33:57,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:33:57,871 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 114 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:57,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 679 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:33:57,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2023-11-19 07:33:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 3387. [2023-11-19 07:33:58,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3387 states, 2668 states have (on average 1.2788605697151425) internal successors, (3412), 2716 states have internal predecessors, (3412), 393 states have call successors, (393), 253 states have call predecessors, (393), 324 states have return successors, (560), 420 states have call predecessors, (560), 389 states have call successors, (560) [2023-11-19 07:33:58,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3387 states to 3387 states and 4365 transitions. [2023-11-19 07:33:58,301 INFO L78 Accepts]: Start accepts. Automaton has 3387 states and 4365 transitions. Word has length 94 [2023-11-19 07:33:58,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:58,302 INFO L495 AbstractCegarLoop]: Abstraction has 3387 states and 4365 transitions. [2023-11-19 07:33:58,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:33:58,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3387 states and 4365 transitions. [2023-11-19 07:33:58,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-19 07:33:58,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:58,307 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:58,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:58,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:33:58,524 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:58,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:58,524 INFO L85 PathProgramCache]: Analyzing trace with hash 353629286, now seen corresponding path program 1 times [2023-11-19 07:33:58,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:58,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496917022] [2023-11-19 07:33:58,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:58,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:58,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:33:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:58,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:33:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:58,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:33:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:58,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:33:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:58,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:33:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:58,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:33:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:58,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 07:33:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:58,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-19 07:33:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:58,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 07:33:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:58,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-19 07:33:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-19 07:33:58,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:58,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496917022] [2023-11-19 07:33:58,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496917022] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:58,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267352386] [2023-11-19 07:33:58,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:58,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:58,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:58,692 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:58,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:33:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:58,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:33:58,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:58,993 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 07:33:58,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:58,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267352386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:58,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:58,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-19 07:33:58,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621432347] [2023-11-19 07:33:58,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:58,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:58,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:58,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:58,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:33:58,997 INFO L87 Difference]: Start difference. First operand 3387 states and 4365 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-19 07:33:59,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:59,455 INFO L93 Difference]: Finished difference Result 5180 states and 6882 transitions. [2023-11-19 07:33:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:59,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 121 [2023-11-19 07:33:59,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:59,478 INFO L225 Difference]: With dead ends: 5180 [2023-11-19 07:33:59,479 INFO L226 Difference]: Without dead ends: 4141 [2023-11-19 07:33:59,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:33:59,484 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 224 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:59,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 450 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:33:59,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4141 states. [2023-11-19 07:33:59,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4141 to 4113. [2023-11-19 07:33:59,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 3259 states have (on average 1.2936483583921448) internal successors, (4216), 3316 states have internal predecessors, (4216), 471 states have call successors, (471), 304 states have call predecessors, (471), 381 states have return successors, (664), 495 states have call predecessors, (664), 467 states have call successors, (664) [2023-11-19 07:33:59,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 5351 transitions. [2023-11-19 07:33:59,968 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 5351 transitions. Word has length 121 [2023-11-19 07:33:59,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:59,968 INFO L495 AbstractCegarLoop]: Abstraction has 4113 states and 5351 transitions. [2023-11-19 07:33:59,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-19 07:33:59,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 5351 transitions. [2023-11-19 07:33:59,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 07:33:59,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:59,976 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:00,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:00,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:34:00,198 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:00,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:00,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2048528155, now seen corresponding path program 1 times [2023-11-19 07:34:00,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:00,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485616147] [2023-11-19 07:34:00,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:00,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:00,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:34:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:00,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:34:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:00,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:34:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:00,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:34:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:00,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:34:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:00,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-19 07:34:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:00,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-19 07:34:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 07:34:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-19 07:34:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:00,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 07:34:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:00,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-19 07:34:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-19 07:34:00,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:00,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485616147] [2023-11-19 07:34:00,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485616147] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:00,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721510912] [2023-11-19 07:34:00,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:00,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:00,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:00,360 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:00,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:34:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:00,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:34:00,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-19 07:34:00,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:00,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721510912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:00,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:34:00,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-19 07:34:00,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718017523] [2023-11-19 07:34:00,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:00,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:00,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:00,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:00,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:00,592 INFO L87 Difference]: Start difference. First operand 4113 states and 5351 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 07:34:00,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:00,952 INFO L93 Difference]: Finished difference Result 6423 states and 8571 transitions. [2023-11-19 07:34:00,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:00,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 138 [2023-11-19 07:34:00,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:00,969 INFO L225 Difference]: With dead ends: 6423 [2023-11-19 07:34:00,969 INFO L226 Difference]: Without dead ends: 4419 [2023-11-19 07:34:00,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:00,978 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 275 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:00,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 323 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2023-11-19 07:34:01,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 4353. [2023-11-19 07:34:01,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 3478 states have (on average 1.261644623346751) internal successors, (4388), 3532 states have internal predecessors, (4388), 471 states have call successors, (471), 322 states have call predecessors, (471), 402 states have return successors, (658), 501 states have call predecessors, (658), 467 states have call successors, (658) [2023-11-19 07:34:01,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 5517 transitions. [2023-11-19 07:34:01,616 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 5517 transitions. Word has length 138 [2023-11-19 07:34:01,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:01,617 INFO L495 AbstractCegarLoop]: Abstraction has 4353 states and 5517 transitions. [2023-11-19 07:34:01,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 07:34:01,617 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 5517 transitions. [2023-11-19 07:34:01,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 07:34:01,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:01,623 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:01,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:01,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:34:01,839 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:01,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:01,840 INFO L85 PathProgramCache]: Analyzing trace with hash 882152518, now seen corresponding path program 1 times [2023-11-19 07:34:01,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:01,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583122742] [2023-11-19 07:34:01,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:01,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:01,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:34:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:01,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:34:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:01,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:34:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:01,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:34:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:01,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:34:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:01,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-19 07:34:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:01,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-19 07:34:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:01,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 07:34:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:01,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-19 07:34:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:01,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 07:34:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:01,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-19 07:34:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-19 07:34:01,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:02,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583122742] [2023-11-19 07:34:02,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583122742] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:02,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790375435] [2023-11-19 07:34:02,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:02,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:02,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:02,002 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:02,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:34:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:02,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:34:02,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:02,160 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-19 07:34:02,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:02,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790375435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:02,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:34:02,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-19 07:34:02,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580650271] [2023-11-19 07:34:02,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:02,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:02,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:02,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:02,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:02,164 INFO L87 Difference]: Start difference. First operand 4353 states and 5517 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 07:34:02,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:02,601 INFO L93 Difference]: Finished difference Result 6646 states and 8526 transitions. [2023-11-19 07:34:02,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:02,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 138 [2023-11-19 07:34:02,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:02,615 INFO L225 Difference]: With dead ends: 6646 [2023-11-19 07:34:02,615 INFO L226 Difference]: Without dead ends: 4404 [2023-11-19 07:34:02,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:02,622 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 264 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:02,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 438 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:02,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4404 states. [2023-11-19 07:34:03,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4404 to 4335. [2023-11-19 07:34:03,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4335 states, 3460 states have (on average 1.2473988439306358) internal successors, (4316), 3514 states have internal predecessors, (4316), 471 states have call successors, (471), 322 states have call predecessors, (471), 402 states have return successors, (658), 501 states have call predecessors, (658), 467 states have call successors, (658) [2023-11-19 07:34:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4335 states to 4335 states and 5445 transitions. [2023-11-19 07:34:03,093 INFO L78 Accepts]: Start accepts. Automaton has 4335 states and 5445 transitions. Word has length 138 [2023-11-19 07:34:03,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:03,094 INFO L495 AbstractCegarLoop]: Abstraction has 4335 states and 5445 transitions. [2023-11-19 07:34:03,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 07:34:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 4335 states and 5445 transitions. [2023-11-19 07:34:03,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-19 07:34:03,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:03,100 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:03,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:03,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:03,322 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:03,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash 91902073, now seen corresponding path program 1 times [2023-11-19 07:34:03,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:03,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901726391] [2023-11-19 07:34:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:03,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:03,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:34:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:03,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:34:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:03,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:34:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:03,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:34:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:34:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:03,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 07:34:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:03,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 07:34:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:03,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 07:34:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:03,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-19 07:34:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:03,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 07:34:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:03,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-19 07:34:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:03,482 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-19 07:34:03,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:03,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901726391] [2023-11-19 07:34:03,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901726391] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:03,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398648332] [2023-11-19 07:34:03,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:03,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:03,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:03,485 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:03,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:34:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:03,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:34:03,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:03,655 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 07:34:03,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:03,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398648332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:03,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:34:03,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-19 07:34:03,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030131193] [2023-11-19 07:34:03,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:03,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:03,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:03,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:03,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:03,661 INFO L87 Difference]: Start difference. First operand 4335 states and 5445 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-19 07:34:04,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:04,201 INFO L93 Difference]: Finished difference Result 8625 states and 11009 transitions. [2023-11-19 07:34:04,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:04,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 139 [2023-11-19 07:34:04,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:04,222 INFO L225 Difference]: With dead ends: 8625 [2023-11-19 07:34:04,222 INFO L226 Difference]: Without dead ends: 6401 [2023-11-19 07:34:04,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:04,230 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 123 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:04,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 702 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:04,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6401 states. [2023-11-19 07:34:04,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6401 to 6397. [2023-11-19 07:34:04,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6397 states, 5147 states have (on average 1.2444142218768215) internal successors, (6405), 5227 states have internal predecessors, (6405), 680 states have call successors, (680), 472 states have call predecessors, (680), 568 states have return successors, (1035), 702 states have call predecessors, (1035), 676 states have call successors, (1035) [2023-11-19 07:34:04,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6397 states to 6397 states and 8120 transitions. [2023-11-19 07:34:04,969 INFO L78 Accepts]: Start accepts. Automaton has 6397 states and 8120 transitions. Word has length 139 [2023-11-19 07:34:04,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:04,970 INFO L495 AbstractCegarLoop]: Abstraction has 6397 states and 8120 transitions. [2023-11-19 07:34:04,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-19 07:34:04,971 INFO L276 IsEmpty]: Start isEmpty. Operand 6397 states and 8120 transitions. [2023-11-19 07:34:04,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-19 07:34:04,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:04,979 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:05,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:05,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:05,196 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:05,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:05,196 INFO L85 PathProgramCache]: Analyzing trace with hash 119832125, now seen corresponding path program 1 times [2023-11-19 07:34:05,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:05,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707902852] [2023-11-19 07:34:05,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:05,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:34:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:34:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:34:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:34:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:34:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:34:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-19 07:34:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 07:34:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-19 07:34:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 07:34:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-19 07:34:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-19 07:34:05,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:05,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707902852] [2023-11-19 07:34:05,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707902852] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:05,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598767762] [2023-11-19 07:34:05,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:05,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:05,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:05,383 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:05,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:34:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:34:05,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:34:05,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:05,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598767762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:05,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:34:05,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-19 07:34:05,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25807112] [2023-11-19 07:34:05,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:05,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:05,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:05,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:05,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:05,616 INFO L87 Difference]: Start difference. First operand 6397 states and 8120 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-19 07:34:06,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:06,290 INFO L93 Difference]: Finished difference Result 8187 states and 10586 transitions. [2023-11-19 07:34:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:06,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 140 [2023-11-19 07:34:06,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:06,310 INFO L225 Difference]: With dead ends: 8187 [2023-11-19 07:34:06,310 INFO L226 Difference]: Without dead ends: 6047 [2023-11-19 07:34:06,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:06,319 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 87 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:06,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 660 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:06,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6047 states. [2023-11-19 07:34:07,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6047 to 5989. [2023-11-19 07:34:07,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5989 states, 4820 states have (on average 1.2348547717842324) internal successors, (5952), 4896 states have internal predecessors, (5952), 636 states have call successors, (636), 442 states have call predecessors, (636), 531 states have return successors, (949), 655 states have call predecessors, (949), 632 states have call successors, (949) [2023-11-19 07:34:07,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5989 states to 5989 states and 7537 transitions. [2023-11-19 07:34:07,124 INFO L78 Accepts]: Start accepts. Automaton has 5989 states and 7537 transitions. Word has length 140 [2023-11-19 07:34:07,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:07,124 INFO L495 AbstractCegarLoop]: Abstraction has 5989 states and 7537 transitions. [2023-11-19 07:34:07,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-19 07:34:07,125 INFO L276 IsEmpty]: Start isEmpty. Operand 5989 states and 7537 transitions. [2023-11-19 07:34:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-19 07:34:07,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:07,136 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:07,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:07,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:07,351 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:07,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:07,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1295391109, now seen corresponding path program 1 times [2023-11-19 07:34:07,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:07,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823769423] [2023-11-19 07:34:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:07,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:34:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:34:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:34:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:34:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:34:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:34:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-19 07:34:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 07:34:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-19 07:34:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 07:34:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-19 07:34:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-19 07:34:07,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:07,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823769423] [2023-11-19 07:34:07,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823769423] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:07,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98917200] [2023-11-19 07:34:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:07,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:07,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:07,494 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:07,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:34:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:34:07,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-19 07:34:07,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:07,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98917200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:07,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:34:07,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-19 07:34:07,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088971243] [2023-11-19 07:34:07,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:07,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:07,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:07,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:07,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:34:07,751 INFO L87 Difference]: Start difference. First operand 5989 states and 7537 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:34:08,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:08,628 INFO L93 Difference]: Finished difference Result 8657 states and 11007 transitions. [2023-11-19 07:34:08,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:34:08,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 141 [2023-11-19 07:34:08,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:08,649 INFO L225 Difference]: With dead ends: 8657 [2023-11-19 07:34:08,650 INFO L226 Difference]: Without dead ends: 5975 [2023-11-19 07:34:08,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:34:08,661 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 332 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:08,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 450 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:34:08,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5975 states. [2023-11-19 07:34:09,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5975 to 4861. [2023-11-19 07:34:09,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4861 states, 3899 states have (on average 1.2146704283149525) internal successors, (4736), 3955 states have internal predecessors, (4736), 526 states have call successors, (526), 359 states have call predecessors, (526), 434 states have return successors, (751), 549 states have call predecessors, (751), 522 states have call successors, (751) [2023-11-19 07:34:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4861 states to 4861 states and 6013 transitions. [2023-11-19 07:34:09,348 INFO L78 Accepts]: Start accepts. Automaton has 4861 states and 6013 transitions. Word has length 141 [2023-11-19 07:34:09,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:09,349 INFO L495 AbstractCegarLoop]: Abstraction has 4861 states and 6013 transitions. [2023-11-19 07:34:09,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:34:09,349 INFO L276 IsEmpty]: Start isEmpty. Operand 4861 states and 6013 transitions. [2023-11-19 07:34:09,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-19 07:34:09,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:09,355 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:09,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:09,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:09,576 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:09,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:09,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1918672711, now seen corresponding path program 1 times [2023-11-19 07:34:09,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:09,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154254061] [2023-11-19 07:34:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:09,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:34:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:34:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-19 07:34:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:34:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:34:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:34:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-19 07:34:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 07:34:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-19 07:34:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 07:34:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-19 07:34:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-19 07:34:09,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:09,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154254061] [2023-11-19 07:34:09,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154254061] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:09,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076166495] [2023-11-19 07:34:09,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:09,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:09,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:09,719 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:09,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:34:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:34:09,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:09,945 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-19 07:34:09,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:09,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076166495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:09,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:34:09,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-19 07:34:09,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705124998] [2023-11-19 07:34:09,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:09,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:09,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:09,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:09,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:34:09,949 INFO L87 Difference]: Start difference. First operand 4861 states and 6013 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:34:10,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:10,752 INFO L93 Difference]: Finished difference Result 6925 states and 8596 transitions. [2023-11-19 07:34:10,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:34:10,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 141 [2023-11-19 07:34:10,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:10,765 INFO L225 Difference]: With dead ends: 6925 [2023-11-19 07:34:10,765 INFO L226 Difference]: Without dead ends: 4179 [2023-11-19 07:34:10,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:34:10,774 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 369 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:10,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 445 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:34:10,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4179 states. [2023-11-19 07:34:11,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4179 to 4157. [2023-11-19 07:34:11,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4157 states, 3321 states have (on average 1.1869918699186992) internal successors, (3942), 3367 states have internal predecessors, (3942), 450 states have call successors, (450), 309 states have call predecessors, (450), 384 states have return successors, (622), 483 states have call predecessors, (622), 446 states have call successors, (622) [2023-11-19 07:34:11,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4157 states to 4157 states and 5014 transitions. [2023-11-19 07:34:11,254 INFO L78 Accepts]: Start accepts. Automaton has 4157 states and 5014 transitions. Word has length 141 [2023-11-19 07:34:11,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:11,254 INFO L495 AbstractCegarLoop]: Abstraction has 4157 states and 5014 transitions. [2023-11-19 07:34:11,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:34:11,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4157 states and 5014 transitions. [2023-11-19 07:34:11,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-19 07:34:11,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:11,260 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:11,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:11,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd37a215-8837-4568-9b32-a2375e1ac93c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:11,475 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:11,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:11,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1800231237, now seen corresponding path program 1 times [2023-11-19 07:34:11,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:11,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175788190] [2023-11-19 07:34:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:11,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat