./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6e26dc8018dcf216dd711848cc7425da3593cca9604197466413681bb8c438e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:48:26,354 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:48:26,490 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:48:26,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:48:26,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:48:26,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:48:26,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:48:26,539 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:48:26,540 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:48:26,545 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:48:26,547 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:48:26,547 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:48:26,548 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:48:26,550 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:48:26,550 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:48:26,550 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:48:26,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:48:26,551 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:48:26,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:48:26,552 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:48:26,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:48:26,553 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:48:26,554 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:48:26,554 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:48:26,555 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:48:26,556 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:48:26,556 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:48:26,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:48:26,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:26,557 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:48:26,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:48:26,559 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:48:26,559 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:48:26,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:48:26,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:48:26,560 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:48:26,560 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:48:26,560 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:48:26,561 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:48:26,561 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_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6e26dc8018dcf216dd711848cc7425da3593cca9604197466413681bb8c438e [2023-11-06 22:48:26,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:48:26,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:48:26,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:48:26,938 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:48:26,938 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:48:26,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c [2023-11-06 22:48:29,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:48:30,241 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:48:30,242 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c [2023-11-06 22:48:30,261 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/data/0f960f114/40ff3807d2864165aca061cda0f65caa/FLAG895501177 [2023-11-06 22:48:30,287 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/data/0f960f114/40ff3807d2864165aca061cda0f65caa [2023-11-06 22:48:30,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:48:30,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:48:30,295 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:30,295 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:48:30,303 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:48:30,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:30" (1/1) ... [2023-11-06 22:48:30,305 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ef8637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:30, skipping insertion in model container [2023-11-06 22:48:30,305 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:30" (1/1) ... [2023-11-06 22:48:30,385 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:48:30,541 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_be086f09-0b76-47ec-8c95-4ecde4e20e21/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c[914,927] [2023-11-06 22:48:30,622 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_be086f09-0b76-47ec-8c95-4ecde4e20e21/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c[7115,7128] [2023-11-06 22:48:30,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:30,763 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:48:30,776 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_be086f09-0b76-47ec-8c95-4ecde4e20e21/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c[914,927] [2023-11-06 22:48:30,794 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_be086f09-0b76-47ec-8c95-4ecde4e20e21/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c[7115,7128] [2023-11-06 22:48:30,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:30,924 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:48:30,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:30 WrapperNode [2023-11-06 22:48:30,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:30,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:30,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:48:30,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:48:30,934 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:30" (1/1) ... [2023-11-06 22:48:30,950 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:30" (1/1) ... [2023-11-06 22:48:31,022 INFO L138 Inliner]: procedures = 77, calls = 94, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 1074 [2023-11-06 22:48:31,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:31,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:48:31,024 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:48:31,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:48:31,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:30" (1/1) ... [2023-11-06 22:48:31,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:30" (1/1) ... [2023-11-06 22:48:31,038 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:30" (1/1) ... [2023-11-06 22:48:31,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:30" (1/1) ... [2023-11-06 22:48:31,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:30" (1/1) ... [2023-11-06 22:48:31,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:30" (1/1) ... [2023-11-06 22:48:31,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:30" (1/1) ... [2023-11-06 22:48:31,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:30" (1/1) ... [2023-11-06 22:48:31,144 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:48:31,153 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:48:31,154 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:48:31,154 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:48:31,155 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:30" (1/1) ... [2023-11-06 22:48:31,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:31,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:31,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:48:31,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:48:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:48:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-06 22:48:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-06 22:48:31,281 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-06 22:48:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-06 22:48:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-06 22:48:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-06 22:48:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-06 22:48:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-06 22:48:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-06 22:48:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-06 22:48:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-06 22:48:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-06 22:48:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-06 22:48:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-06 22:48:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-06 22:48:31,284 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-06 22:48:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-06 22:48:31,284 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-06 22:48:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-06 22:48:31,284 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-06 22:48:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-06 22:48:31,285 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-06 22:48:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:48:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-06 22:48:31,285 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-06 22:48:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-06 22:48:31,285 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-06 22:48:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:48:31,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:48:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-06 22:48:31,286 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-06 22:48:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-11-06 22:48:31,286 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-11-06 22:48:31,454 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:48:31,457 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:48:32,462 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:48:32,482 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:48:32,483 INFO L302 CfgBuilder]: Removed 19 assume(true) statements. [2023-11-06 22:48:32,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:32 BoogieIcfgContainer [2023-11-06 22:48:32,487 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:48:32,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:48:32,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:48:32,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:48:32,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:48:30" (1/3) ... [2023-11-06 22:48:32,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5efb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:32, skipping insertion in model container [2023-11-06 22:48:32,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:30" (2/3) ... [2023-11-06 22:48:32,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5efb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:32, skipping insertion in model container [2023-11-06 22:48:32,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:32" (3/3) ... [2023-11-06 22:48:32,500 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.14.cil.c [2023-11-06 22:48:32,521 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:48:32,522 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:48:32,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:48:32,627 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5f2d9e55, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:48:32,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:48:32,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 502 states, 442 states have (on average 1.6244343891402715) internal successors, (718), 450 states have internal predecessors, (718), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-06 22:48:32,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:48:32,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:32,661 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] [2023-11-06 22:48:32,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:32,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:32,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2139663125, now seen corresponding path program 1 times [2023-11-06 22:48:32,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:32,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120759323] [2023-11-06 22:48:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:32,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:33,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:48:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:33,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:48:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:33,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:48:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:33,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:48:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:33,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:48:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:33,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:48:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:33,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:48:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:33,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:33,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120759323] [2023-11-06 22:48:33,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120759323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:33,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:33,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:48:33,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564692744] [2023-11-06 22:48:33,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:33,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:48:33,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:33,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:48:33,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:48:33,278 INFO L87 Difference]: Start difference. First operand has 502 states, 442 states have (on average 1.6244343891402715) internal successors, (718), 450 states have internal predecessors, (718), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) 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) [2023-11-06 22:48:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:35,087 INFO L93 Difference]: Finished difference Result 1110 states and 1762 transitions. [2023-11-06 22:48:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:48:35,090 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 [2023-11-06 22:48:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:35,117 INFO L225 Difference]: With dead ends: 1110 [2023-11-06 22:48:35,117 INFO L226 Difference]: Without dead ends: 626 [2023-11-06 22:48:35,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:48:35,134 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 874 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:35,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 2233 Invalid, 1501 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [130 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:48:35,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-11-06 22:48:35,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 587. [2023-11-06 22:48:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 510 states have (on average 1.5156862745098039) internal successors, (773), 517 states have internal predecessors, (773), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2023-11-06 22:48:35,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 880 transitions. [2023-11-06 22:48:35,266 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 880 transitions. Word has length 65 [2023-11-06 22:48:35,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:35,266 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 880 transitions. [2023-11-06 22:48:35,267 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) [2023-11-06 22:48:35,267 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 880 transitions. [2023-11-06 22:48:35,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:48:35,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:35,272 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] [2023-11-06 22:48:35,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:48:35,273 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:35,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:35,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1735877174, now seen corresponding path program 1 times [2023-11-06 22:48:35,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:35,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348450451] [2023-11-06 22:48:35,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:35,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:35,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:48:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:35,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:48:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:35,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:48:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:35,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:48:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:35,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:48:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:35,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:48:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:35,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:48:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:35,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:35,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:35,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348450451] [2023-11-06 22:48:35,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348450451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:35,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:35,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:48:35,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049067028] [2023-11-06 22:48:35,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:35,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:48:35,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:35,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:48:35,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:48:35,581 INFO L87 Difference]: Start difference. First operand 587 states and 880 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) [2023-11-06 22:48:37,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:37,238 INFO L93 Difference]: Finished difference Result 934 states and 1357 transitions. [2023-11-06 22:48:37,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:48:37,239 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 [2023-11-06 22:48:37,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:37,248 INFO L225 Difference]: With dead ends: 934 [2023-11-06 22:48:37,248 INFO L226 Difference]: Without dead ends: 757 [2023-11-06 22:48:37,251 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 [2023-11-06 22:48:37,258 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1507 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:37,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 2233 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:48:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2023-11-06 22:48:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 683. [2023-11-06 22:48:37,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 586 states have (on average 1.4965870307167235) internal successors, (877), 595 states have internal predecessors, (877), 64 states have call successors, (64), 29 states have call predecessors, (64), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2023-11-06 22:48:37,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1014 transitions. [2023-11-06 22:48:37,366 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1014 transitions. Word has length 65 [2023-11-06 22:48:37,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:37,367 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 1014 transitions. [2023-11-06 22:48:37,367 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) [2023-11-06 22:48:37,367 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1014 transitions. [2023-11-06 22:48:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:48:37,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:37,375 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] [2023-11-06 22:48:37,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:48:37,376 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:37,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash 530504012, now seen corresponding path program 1 times [2023-11-06 22:48:37,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:37,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327055416] [2023-11-06 22:48:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:37,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:37,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:48:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:37,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:48:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:37,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:48:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:37,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:48:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:37,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:48:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:37,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:48:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:37,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:48:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:37,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:37,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327055416] [2023-11-06 22:48:37,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327055416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:37,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:37,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:48:37,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471804633] [2023-11-06 22:48:37,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:37,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:48:37,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:37,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:48:37,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:48:37,611 INFO L87 Difference]: Start difference. First operand 683 states and 1014 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2023-11-06 22:48:39,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:39,237 INFO L93 Difference]: Finished difference Result 984 states and 1428 transitions. [2023-11-06 22:48:39,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:48:39,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 65 [2023-11-06 22:48:39,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:39,243 INFO L225 Difference]: With dead ends: 984 [2023-11-06 22:48:39,243 INFO L226 Difference]: Without dead ends: 717 [2023-11-06 22:48:39,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:48:39,246 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 979 mSDsluCounter, 2229 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:39,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 2654 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1925 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:48:39,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-11-06 22:48:39,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 688. [2023-11-06 22:48:39,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 590 states have (on average 1.4898305084745762) internal successors, (879), 599 states have internal predecessors, (879), 64 states have call successors, (64), 29 states have call predecessors, (64), 32 states have return successors, (74), 63 states have call predecessors, (74), 60 states have call successors, (74) [2023-11-06 22:48:39,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1017 transitions. [2023-11-06 22:48:39,319 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1017 transitions. Word has length 65 [2023-11-06 22:48:39,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:39,319 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 1017 transitions. [2023-11-06 22:48:39,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2023-11-06 22:48:39,320 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1017 transitions. [2023-11-06 22:48:39,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:48:39,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:39,323 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] [2023-11-06 22:48:39,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:48:39,324 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:39,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash -498855286, now seen corresponding path program 1 times [2023-11-06 22:48:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:39,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586307306] [2023-11-06 22:48:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:39,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:48:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:39,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:48:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:39,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:48:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:39,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:48:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:39,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:48:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:39,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:48:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:39,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:48:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:39,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:39,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586307306] [2023-11-06 22:48:39,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586307306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:39,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:39,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:48:39,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019178384] [2023-11-06 22:48:39,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:39,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:48:39,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:39,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:48:39,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:48:39,553 INFO L87 Difference]: Start difference. First operand 688 states and 1017 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 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) [2023-11-06 22:48:41,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:41,827 INFO L93 Difference]: Finished difference Result 2010 states and 2813 transitions. [2023-11-06 22:48:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-06 22:48:41,828 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), 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 65 [2023-11-06 22:48:41,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:41,842 INFO L225 Difference]: With dead ends: 2010 [2023-11-06 22:48:41,842 INFO L226 Difference]: Without dead ends: 1720 [2023-11-06 22:48:41,844 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 [2023-11-06 22:48:41,855 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 4169 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4187 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:41,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4187 Valid, 2296 Invalid, 2371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 1719 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:48:41,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2023-11-06 22:48:42,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1589. [2023-11-06 22:48:42,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1305 states have (on average 1.393103448275862) internal successors, (1818), 1329 states have internal predecessors, (1818), 152 states have call successors, (152), 112 states have call predecessors, (152), 130 states have return successors, (188), 150 states have call predecessors, (188), 148 states have call successors, (188) [2023-11-06 22:48:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2158 transitions. [2023-11-06 22:48:42,054 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2158 transitions. Word has length 65 [2023-11-06 22:48:42,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:42,054 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2158 transitions. [2023-11-06 22:48:42,055 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), 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) [2023-11-06 22:48:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2158 transitions. [2023-11-06 22:48:42,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:48:42,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:42,058 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] [2023-11-06 22:48:42,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:48:42,059 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:42,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:42,060 INFO L85 PathProgramCache]: Analyzing trace with hash -905645856, now seen corresponding path program 1 times [2023-11-06 22:48:42,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:42,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596202968] [2023-11-06 22:48:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:42,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:42,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:48:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:42,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:48:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:42,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:48:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:42,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:48:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:42,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:48:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:42,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:48:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:42,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:48:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:42,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:42,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596202968] [2023-11-06 22:48:42,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596202968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:42,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:42,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:48:42,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323810370] [2023-11-06 22:48:42,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:42,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:48:42,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:42,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:48:42,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:48:42,263 INFO L87 Difference]: Start difference. First operand 1589 states and 2158 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2023-11-06 22:48:43,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:43,971 INFO L93 Difference]: Finished difference Result 2880 states and 3831 transitions. [2023-11-06 22:48:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:48:43,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 65 [2023-11-06 22:48:43,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:43,982 INFO L225 Difference]: With dead ends: 2880 [2023-11-06 22:48:43,983 INFO L226 Difference]: Without dead ends: 1695 [2023-11-06 22:48:43,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:48:43,989 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 983 mSDsluCounter, 2229 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:43,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 2652 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:48:43,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2023-11-06 22:48:44,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1619. [2023-11-06 22:48:44,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1329 states have (on average 1.3799849510910458) internal successors, (1834), 1353 states have internal predecessors, (1834), 152 states have call successors, (152), 112 states have call predecessors, (152), 136 states have return successors, (194), 156 states have call predecessors, (194), 148 states have call successors, (194) [2023-11-06 22:48:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2180 transitions. [2023-11-06 22:48:44,175 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2180 transitions. Word has length 65 [2023-11-06 22:48:44,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:44,175 INFO L495 AbstractCegarLoop]: Abstraction has 1619 states and 2180 transitions. [2023-11-06 22:48:44,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2023-11-06 22:48:44,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2180 transitions. [2023-11-06 22:48:44,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:48:44,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:44,177 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] [2023-11-06 22:48:44,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:48:44,178 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:44,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:44,183 INFO L85 PathProgramCache]: Analyzing trace with hash 480557538, now seen corresponding path program 1 times [2023-11-06 22:48:44,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:44,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92538420] [2023-11-06 22:48:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:44,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:44,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:48:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:44,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:48:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:44,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:48:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:44,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:48:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:48:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:44,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:48:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:44,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:48:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:44,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:44,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92538420] [2023-11-06 22:48:44,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92538420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:44,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:44,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:48:44,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554607953] [2023-11-06 22:48:44,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:44,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:48:44,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:44,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:48:44,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:48:44,306 INFO L87 Difference]: Start difference. First operand 1619 states and 2180 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 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) [2023-11-06 22:48:45,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:45,582 INFO L93 Difference]: Finished difference Result 4055 states and 5284 transitions. [2023-11-06 22:48:45,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:48:45,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 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 [2023-11-06 22:48:45,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:45,604 INFO L225 Difference]: With dead ends: 4055 [2023-11-06 22:48:45,604 INFO L226 Difference]: Without dead ends: 2841 [2023-11-06 22:48:45,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:48:45,609 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1435 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:45,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 1815 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:48:45,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2023-11-06 22:48:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2733. [2023-11-06 22:48:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2184 states have (on average 1.3154761904761905) internal successors, (2873), 2230 states have internal predecessors, (2873), 277 states have call successors, (277), 216 states have call predecessors, (277), 270 states have return successors, (402), 291 states have call predecessors, (402), 273 states have call successors, (402) [2023-11-06 22:48:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 3552 transitions. [2023-11-06 22:48:45,903 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 3552 transitions. Word has length 65 [2023-11-06 22:48:45,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:45,904 INFO L495 AbstractCegarLoop]: Abstraction has 2733 states and 3552 transitions. [2023-11-06 22:48:45,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 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) [2023-11-06 22:48:45,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 3552 transitions. [2023-11-06 22:48:45,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 22:48:45,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:45,907 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] [2023-11-06 22:48:45,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:48:45,910 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:45,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:45,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1600082124, now seen corresponding path program 1 times [2023-11-06 22:48:45,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:45,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551316569] [2023-11-06 22:48:45,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:45,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:45,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:48:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:45,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:48:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:45,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:48:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:45,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:48:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:45,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:48:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:45,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:48:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:45,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:48:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:46,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:46,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551316569] [2023-11-06 22:48:46,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551316569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:46,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:46,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:48:46,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354973606] [2023-11-06 22:48:46,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:46,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:48:46,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:46,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:48:46,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:48:46,007 INFO L87 Difference]: Start difference. First operand 2733 states and 3552 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:48:47,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:47,349 INFO L93 Difference]: Finished difference Result 6125 states and 7816 transitions. [2023-11-06 22:48:47,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:48:47,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2023-11-06 22:48:47,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:47,377 INFO L225 Difference]: With dead ends: 6125 [2023-11-06 22:48:47,377 INFO L226 Difference]: Without dead ends: 3802 [2023-11-06 22:48:47,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:48:47,385 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 1200 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:47,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 1469 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:48:47,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2023-11-06 22:48:47,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 3546. [2023-11-06 22:48:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 2813 states have (on average 1.2968361180234624) internal successors, (3648), 2866 states have internal predecessors, (3648), 367 states have call successors, (367), 294 states have call predecessors, (367), 364 states have return successors, (516), 390 states have call predecessors, (516), 363 states have call successors, (516) [2023-11-06 22:48:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 4531 transitions. [2023-11-06 22:48:47,753 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 4531 transitions. Word has length 66 [2023-11-06 22:48:47,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:47,754 INFO L495 AbstractCegarLoop]: Abstraction has 3546 states and 4531 transitions. [2023-11-06 22:48:47,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:48:47,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 4531 transitions. [2023-11-06 22:48:47,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-06 22:48:47,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:47,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:47,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:48:47,757 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:47,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:47,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1384225741, now seen corresponding path program 1 times [2023-11-06 22:48:47,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:47,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726640300] [2023-11-06 22:48:47,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:47,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:47,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:48:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:47,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:48:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:47,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:48:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:47,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:48:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:47,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:48:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:47,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:48:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:47,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:48:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:47,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:47,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726640300] [2023-11-06 22:48:47,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726640300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:47,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:47,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:48:47,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645852584] [2023-11-06 22:48:47,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:47,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:48:47,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:47,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:48:47,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:48:47,876 INFO L87 Difference]: Start difference. First operand 3546 states and 4531 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:48:49,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:49,126 INFO L93 Difference]: Finished difference Result 7495 states and 9433 transitions. [2023-11-06 22:48:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:48:49,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2023-11-06 22:48:49,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:49,159 INFO L225 Difference]: With dead ends: 7495 [2023-11-06 22:48:49,159 INFO L226 Difference]: Without dead ends: 4357 [2023-11-06 22:48:49,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:48:49,168 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1759 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1793 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:49,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1793 Valid, 1189 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:48:49,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2023-11-06 22:48:49,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 4109. [2023-11-06 22:48:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 3260 states have (on average 1.2868098159509203) internal successors, (4195), 3319 states have internal predecessors, (4195), 423 states have call successors, (423), 344 states have call predecessors, (423), 424 states have return successors, (593), 450 states have call predecessors, (593), 419 states have call successors, (593) [2023-11-06 22:48:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5211 transitions. [2023-11-06 22:48:49,605 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5211 transitions. Word has length 72 [2023-11-06 22:48:49,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:49,605 INFO L495 AbstractCegarLoop]: Abstraction has 4109 states and 5211 transitions. [2023-11-06 22:48:49,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:48:49,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5211 transitions. [2023-11-06 22:48:49,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-06 22:48:49,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:49,610 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:49,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:48:49,611 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:49,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:49,611 INFO L85 PathProgramCache]: Analyzing trace with hash -478283520, now seen corresponding path program 1 times [2023-11-06 22:48:49,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:49,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063367853] [2023-11-06 22:48:49,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:49,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:49,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:48:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:49,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:48:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:49,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:48:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:49,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:48:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:49,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:48:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:48:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:49,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:48:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:49,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:49,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063367853] [2023-11-06 22:48:49,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063367853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:49,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:49,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:48:49,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101635671] [2023-11-06 22:48:49,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:49,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:48:49,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:49,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:48:49,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:48:49,728 INFO L87 Difference]: Start difference. First operand 4109 states and 5211 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:48:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:51,137 INFO L93 Difference]: Finished difference Result 5158 states and 6471 transitions. [2023-11-06 22:48:51,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:48:51,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2023-11-06 22:48:51,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:51,168 INFO L225 Difference]: With dead ends: 5158 [2023-11-06 22:48:51,169 INFO L226 Difference]: Without dead ends: 5155 [2023-11-06 22:48:51,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:48:51,172 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 2122 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2132 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:51,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2132 Valid, 1517 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:48:51,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5155 states. [2023-11-06 22:48:51,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5155 to 4846. [2023-11-06 22:48:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4846 states, 3822 states have (on average 1.2755102040816326) internal successors, (4875), 3888 states have internal predecessors, (4875), 504 states have call successors, (504), 414 states have call predecessors, (504), 518 states have return successors, (717), 548 states have call predecessors, (717), 501 states have call successors, (717) [2023-11-06 22:48:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4846 states to 4846 states and 6096 transitions. [2023-11-06 22:48:51,887 INFO L78 Accepts]: Start accepts. Automaton has 4846 states and 6096 transitions. Word has length 73 [2023-11-06 22:48:51,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:51,889 INFO L495 AbstractCegarLoop]: Abstraction has 4846 states and 6096 transitions. [2023-11-06 22:48:51,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:48:51,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4846 states and 6096 transitions. [2023-11-06 22:48:51,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 22:48:51,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:51,891 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:51,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:48:51,892 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:51,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:51,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1943349731, now seen corresponding path program 1 times [2023-11-06 22:48:51,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:51,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365842781] [2023-11-06 22:48:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:51,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:52,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:48:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:52,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:48:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:52,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:48:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:52,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:48:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:52,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:48:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:52,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:48:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:52,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:48:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:52,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:52,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365842781] [2023-11-06 22:48:52,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365842781] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:52,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544136898] [2023-11-06 22:48:52,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:52,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:52,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:52,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:52,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:48:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:52,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:48:52,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:52,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:52,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544136898] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:48:52,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:48:52,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-11-06 22:48:52,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338686527] [2023-11-06 22:48:52,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:52,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:48:52,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:52,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:48:52,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:48:52,763 INFO L87 Difference]: Start difference. First operand 4846 states and 6096 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-06 22:48:55,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:55,747 INFO L93 Difference]: Finished difference Result 9260 states and 11469 transitions. [2023-11-06 22:48:55,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-06 22:48:55,748 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2023-11-06 22:48:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:55,811 INFO L225 Difference]: With dead ends: 9260 [2023-11-06 22:48:55,811 INFO L226 Difference]: Without dead ends: 9257 [2023-11-06 22:48:55,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:48:55,816 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 1904 mSDsluCounter, 2469 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 2551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:55,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1970 Valid, 2980 Invalid, 2551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:48:55,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9257 states. [2023-11-06 22:48:56,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9257 to 8371. [2023-11-06 22:48:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8371 states, 6577 states have (on average 1.2603010491105366) internal successors, (8289), 6694 states have internal predecessors, (8289), 872 states have call successors, (872), 736 states have call predecessors, (872), 920 states have return successors, (1254), 945 states have call predecessors, (1254), 869 states have call successors, (1254) [2023-11-06 22:48:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8371 states to 8371 states and 10415 transitions. [2023-11-06 22:48:57,004 INFO L78 Accepts]: Start accepts. Automaton has 8371 states and 10415 transitions. Word has length 74 [2023-11-06 22:48:57,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:57,004 INFO L495 AbstractCegarLoop]: Abstraction has 8371 states and 10415 transitions. [2023-11-06 22:48:57,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-06 22:48:57,005 INFO L276 IsEmpty]: Start isEmpty. Operand 8371 states and 10415 transitions. [2023-11-06 22:48:57,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:48:57,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:57,010 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:57,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:57,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:48:57,217 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:57,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:57,217 INFO L85 PathProgramCache]: Analyzing trace with hash 176755392, now seen corresponding path program 2 times [2023-11-06 22:48:57,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:57,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426986056] [2023-11-06 22:48:57,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:57,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:57,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:48:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:48:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:57,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:48:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:57,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:48:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:57,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:48:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:57,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:48:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:57,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:48:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:57,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:57,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426986056] [2023-11-06 22:48:57,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426986056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:57,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:57,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:48:57,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259348160] [2023-11-06 22:48:57,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:57,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:48:57,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:57,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:48:57,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:48:57,316 INFO L87 Difference]: Start difference. First operand 8371 states and 10415 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:48:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:58,757 INFO L93 Difference]: Finished difference Result 11361 states and 14116 transitions. [2023-11-06 22:48:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:48:58,758 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), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2023-11-06 22:48:58,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:58,788 INFO L225 Difference]: With dead ends: 11361 [2023-11-06 22:48:58,789 INFO L226 Difference]: Without dead ends: 4743 [2023-11-06 22:48:58,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:48:58,802 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1340 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:58,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 1591 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:48:58,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2023-11-06 22:48:59,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 3694. [2023-11-06 22:48:59,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3694 states, 2936 states have (on average 1.2639645776566757) internal successors, (3711), 2975 states have internal predecessors, (3711), 387 states have call successors, (387), 316 states have call predecessors, (387), 369 states have return successors, (510), 407 states have call predecessors, (510), 384 states have call successors, (510) [2023-11-06 22:48:59,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3694 states to 3694 states and 4608 transitions. [2023-11-06 22:48:59,254 INFO L78 Accepts]: Start accepts. Automaton has 3694 states and 4608 transitions. Word has length 77 [2023-11-06 22:48:59,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:59,254 INFO L495 AbstractCegarLoop]: Abstraction has 3694 states and 4608 transitions. [2023-11-06 22:48:59,254 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), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:48:59,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3694 states and 4608 transitions. [2023-11-06 22:48:59,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-06 22:48:59,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:59,257 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:59,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:48:59,258 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:59,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:59,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1361935087, now seen corresponding path program 1 times [2023-11-06 22:48:59,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:59,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580337553] [2023-11-06 22:48:59,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:59,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:48:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:48:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:48:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:48:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:48:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:48:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:48:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 22:48:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:48:59,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:59,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580337553] [2023-11-06 22:48:59,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580337553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:59,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:59,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:48:59,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251327722] [2023-11-06 22:48:59,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:59,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:48:59,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:59,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:48:59,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:48:59,418 INFO L87 Difference]: Start difference. First operand 3694 states and 4608 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 22:49:01,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:01,645 INFO L93 Difference]: Finished difference Result 10258 states and 12575 transitions. [2023-11-06 22:49:01,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:49:01,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2023-11-06 22:49:01,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:01,670 INFO L225 Difference]: With dead ends: 10258 [2023-11-06 22:49:01,671 INFO L226 Difference]: Without dead ends: 5906 [2023-11-06 22:49:01,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:49:01,683 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 1897 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1910 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:01,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1910 Valid, 1936 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:49:01,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5906 states. [2023-11-06 22:49:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5906 to 5642. [2023-11-06 22:49:02,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 4415 states have (on average 1.2280860702151755) internal successors, (5422), 4497 states have internal predecessors, (5422), 601 states have call successors, (601), 500 states have call predecessors, (601), 624 states have return successors, (890), 649 states have call predecessors, (890), 598 states have call successors, (890) [2023-11-06 22:49:02,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 6913 transitions. [2023-11-06 22:49:02,523 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 6913 transitions. Word has length 84 [2023-11-06 22:49:02,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:02,524 INFO L495 AbstractCegarLoop]: Abstraction has 5642 states and 6913 transitions. [2023-11-06 22:49:02,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 22:49:02,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 6913 transitions. [2023-11-06 22:49:02,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-06 22:49:02,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:02,530 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2023-11-06 22:49:02,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:49:02,530 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:02,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:02,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2048487170, now seen corresponding path program 1 times [2023-11-06 22:49:02,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:02,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829632269] [2023-11-06 22:49:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:02,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:49:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:49:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:49:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:49:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:49:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:49:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:49:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 22:49:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:49:02,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:02,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829632269] [2023-11-06 22:49:02,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829632269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:02,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:02,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:49:02,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984964973] [2023-11-06 22:49:02,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:02,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:49:02,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:02,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:49:02,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:49:02,697 INFO L87 Difference]: Start difference. First operand 5642 states and 6913 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) [2023-11-06 22:49:04,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:04,822 INFO L93 Difference]: Finished difference Result 9269 states and 11247 transitions. [2023-11-06 22:49:04,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:49:04,823 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 93 [2023-11-06 22:49:04,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:04,840 INFO L225 Difference]: With dead ends: 9269 [2023-11-06 22:49:04,841 INFO L226 Difference]: Without dead ends: 4760 [2023-11-06 22:49:04,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:49:04,853 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 2009 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 2679 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:04,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 2679 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:49:04,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4760 states. [2023-11-06 22:49:05,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4760 to 4329. [2023-11-06 22:49:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4329 states, 3384 states have (on average 1.2163120567375887) internal successors, (4116), 3449 states have internal predecessors, (4116), 460 states have call successors, (460), 377 states have call predecessors, (460), 483 states have return successors, (636), 507 states have call predecessors, (636), 457 states have call successors, (636) [2023-11-06 22:49:05,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4329 states to 4329 states and 5212 transitions. [2023-11-06 22:49:05,352 INFO L78 Accepts]: Start accepts. Automaton has 4329 states and 5212 transitions. Word has length 93 [2023-11-06 22:49:05,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:05,352 INFO L495 AbstractCegarLoop]: Abstraction has 4329 states and 5212 transitions. [2023-11-06 22:49:05,353 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) [2023-11-06 22:49:05,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4329 states and 5212 transitions. [2023-11-06 22:49:05,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-06 22:49:05,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:05,360 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 22:49:05,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:49:05,360 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:05,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:05,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1315684053, now seen corresponding path program 1 times [2023-11-06 22:49:05,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:05,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007073487] [2023-11-06 22:49:05,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:05,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:49:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:49:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:49:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:49:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:49:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:49:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:49:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 22:49:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-06 22:49:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 22:49:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 22:49:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:49:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:49:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-06 22:49:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-06 22:49:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-06 22:49:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-06 22:49:05,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:05,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007073487] [2023-11-06 22:49:05,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007073487] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:05,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12967996] [2023-11-06 22:49:05,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:05,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:05,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:05,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:05,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:49:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:05,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:49:05,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 22:49:05,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:49:05,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12967996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:05,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:49:05,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-11-06 22:49:05,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287749130] [2023-11-06 22:49:05,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:05,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:49:05,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:05,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:49:05,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:49:05,850 INFO L87 Difference]: Start difference. First operand 4329 states and 5212 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 22:49:06,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:06,190 INFO L93 Difference]: Finished difference Result 6493 states and 7800 transitions. [2023-11-06 22:49:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:06,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2023-11-06 22:49:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:06,200 INFO L225 Difference]: With dead ends: 6493 [2023-11-06 22:49:06,200 INFO L226 Difference]: Without dead ends: 2574 [2023-11-06 22:49:06,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:49:06,210 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 34 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3685 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:06,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3685 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:06,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2023-11-06 22:49:06,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2418. [2023-11-06 22:49:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 1981 states have (on average 1.2417970721857647) internal successors, (2460), 2002 states have internal predecessors, (2460), 219 states have call successors, (219), 164 states have call predecessors, (219), 216 states have return successors, (302), 252 states have call predecessors, (302), 216 states have call successors, (302) [2023-11-06 22:49:06,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 2981 transitions. [2023-11-06 22:49:06,546 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 2981 transitions. Word has length 145 [2023-11-06 22:49:06,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:06,547 INFO L495 AbstractCegarLoop]: Abstraction has 2418 states and 2981 transitions. [2023-11-06 22:49:06,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 22:49:06,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 2981 transitions. [2023-11-06 22:49:06,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-06 22:49:06,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:06,553 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 22:49:06,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:06,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:49:06,759 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:06,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:06,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1533847623, now seen corresponding path program 1 times [2023-11-06 22:49:06,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:06,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650664492] [2023-11-06 22:49:06,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:06,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:49:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:49:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:49:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:49:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:49:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:49:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:49:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 22:49:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:49:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 22:49:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 22:49:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:49:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:49:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-06 22:49:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-06 22:49:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-06 22:49:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-06 22:49:06,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:06,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650664492] [2023-11-06 22:49:06,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650664492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:06,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:06,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:49:06,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151384766] [2023-11-06 22:49:06,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:06,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:49:06,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:06,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:49:06,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:49:06,915 INFO L87 Difference]: Start difference. First operand 2418 states and 2981 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:49:07,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:07,954 INFO L93 Difference]: Finished difference Result 2468 states and 3033 transitions. [2023-11-06 22:49:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:07,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2023-11-06 22:49:07,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:07,960 INFO L225 Difference]: With dead ends: 2468 [2023-11-06 22:49:07,960 INFO L226 Difference]: Without dead ends: 1975 [2023-11-06 22:49:07,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:49:07,963 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 761 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:07,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1754 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:49:07,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2023-11-06 22:49:08,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1928. [2023-11-06 22:49:08,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1928 states, 1602 states have (on average 1.2652933832709115) internal successors, (2027), 1618 states have internal predecessors, (2027), 166 states have call successors, (166), 119 states have call predecessors, (166), 158 states have return successors, (226), 191 states have call predecessors, (226), 163 states have call successors, (226) [2023-11-06 22:49:08,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 2419 transitions. [2023-11-06 22:49:08,202 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 2419 transitions. Word has length 147 [2023-11-06 22:49:08,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:08,202 INFO L495 AbstractCegarLoop]: Abstraction has 1928 states and 2419 transitions. [2023-11-06 22:49:08,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:49:08,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 2419 transitions. [2023-11-06 22:49:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-06 22:49:08,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:08,207 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 22:49:08,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:49:08,208 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:08,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:08,208 INFO L85 PathProgramCache]: Analyzing trace with hash -816949164, now seen corresponding path program 1 times [2023-11-06 22:49:08,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:08,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650334587] [2023-11-06 22:49:08,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:08,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:49:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:49:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:49:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:49:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:49:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:49:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:49:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:49:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:49:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-06 22:49:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:49:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:49:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:49:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-06 22:49:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-06 22:49:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-06 22:49:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-06 22:49:08,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:08,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650334587] [2023-11-06 22:49:08,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650334587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:08,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:08,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:49:08,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11676682] [2023-11-06 22:49:08,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:08,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:08,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:08,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:08,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:08,368 INFO L87 Difference]: Start difference. First operand 1928 states and 2419 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 22:49:09,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:09,753 INFO L93 Difference]: Finished difference Result 3209 states and 3937 transitions. [2023-11-06 22:49:09,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:49:09,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2023-11-06 22:49:09,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:09,761 INFO L225 Difference]: With dead ends: 3209 [2023-11-06 22:49:09,761 INFO L226 Difference]: Without dead ends: 1827 [2023-11-06 22:49:09,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:49:09,766 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 685 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:09,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 2268 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 22:49:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2023-11-06 22:49:10,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1681. [2023-11-06 22:49:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1406 states have (on average 1.2816500711237553) internal successors, (1802), 1420 states have internal predecessors, (1802), 142 states have call successors, (142), 99 states have call predecessors, (142), 131 states have return successors, (187), 162 states have call predecessors, (187), 139 states have call successors, (187) [2023-11-06 22:49:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2131 transitions. [2023-11-06 22:49:10,065 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2131 transitions. Word has length 159 [2023-11-06 22:49:10,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:10,066 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2131 transitions. [2023-11-06 22:49:10,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 22:49:10,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2131 transitions. [2023-11-06 22:49:10,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-06 22:49:10,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:10,071 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:10,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:49:10,072 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:10,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:10,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1398916210, now seen corresponding path program 1 times [2023-11-06 22:49:10,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:10,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605082684] [2023-11-06 22:49:10,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:10,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:49:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:49:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:49:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:49:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:49:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:49:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 22:49:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:49:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 22:49:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-06 22:49:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-06 22:49:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:49:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:49:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-06 22:49:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-06 22:49:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 22:49:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 22:49:10,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:10,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605082684] [2023-11-06 22:49:10,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605082684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:49:10,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706909869] [2023-11-06 22:49:10,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:10,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:49:10,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:10,498 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:49:10,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:49:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:49:10,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-06 22:49:10,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-06 22:49:11,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706909869] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:11,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:49:11,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-11-06 22:49:11,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045684416] [2023-11-06 22:49:11,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:11,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:49:11,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:11,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:49:11,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:49:11,138 INFO L87 Difference]: Start difference. First operand 1681 states and 2131 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2023-11-06 22:49:12,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:12,854 INFO L93 Difference]: Finished difference Result 3475 states and 4333 transitions. [2023-11-06 22:49:12,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 22:49:12,856 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2023-11-06 22:49:12,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:12,864 INFO L225 Difference]: With dead ends: 3475 [2023-11-06 22:49:12,864 INFO L226 Difference]: Without dead ends: 2072 [2023-11-06 22:49:12,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2023-11-06 22:49:12,870 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 2206 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2238 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:12,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2238 Valid, 2115 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:49:12,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-11-06 22:49:13,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1959. [2023-11-06 22:49:13,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1959 states, 1609 states have (on average 1.245494095711622) internal successors, (2004), 1624 states have internal predecessors, (2004), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2023-11-06 22:49:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2442 transitions. [2023-11-06 22:49:13,126 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2442 transitions. Word has length 162 [2023-11-06 22:49:13,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:13,127 INFO L495 AbstractCegarLoop]: Abstraction has 1959 states and 2442 transitions. [2023-11-06 22:49:13,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2023-11-06 22:49:13,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2442 transitions. [2023-11-06 22:49:13,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:49:13,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:13,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:13,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:13,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be086f09-0b76-47ec-8c95-4ecde4e20e21/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:49:13,338 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:13,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:13,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1864499729, now seen corresponding path program 1 times [2023-11-06 22:49:13,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:13,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900303817] [2023-11-06 22:49:13,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:13,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:13,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:49:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:13,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:49:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:13,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:49:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:13,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:49:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:13,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:49:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:13,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:13,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:13,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900303817] [2023-11-06 22:49:13,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900303817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:13,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:13,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:49:13,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820818087] [2023-11-06 22:49:13,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:13,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:49:13,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:13,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:49:13,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:13,630 INFO L87 Difference]: Start difference. First operand 1959 states and 2442 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:16,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:16,787 INFO L93 Difference]: Finished difference Result 2487 states and 3289 transitions. [2023-11-06 22:49:16,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:16,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2023-11-06 22:49:16,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:16,811 INFO L225 Difference]: With dead ends: 2487 [2023-11-06 22:49:16,821 INFO L226 Difference]: Without dead ends: 2101 [2023-11-06 22:49:16,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:49:16,825 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 1156 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:16,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 1028 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-06 22:49:16,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2023-11-06 22:49:17,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 1959. [2023-11-06 22:49:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1959 states, 1609 states have (on average 1.244872591671846) internal successors, (2003), 1624 states have internal predecessors, (2003), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2023-11-06 22:49:17,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2441 transitions. [2023-11-06 22:49:17,378 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2441 transitions. Word has length 179 [2023-11-06 22:49:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:17,378 INFO L495 AbstractCegarLoop]: Abstraction has 1959 states and 2441 transitions. [2023-11-06 22:49:17,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2441 transitions. [2023-11-06 22:49:17,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:49:17,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:17,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:17,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:49:17,383 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:17,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:17,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1740636077, now seen corresponding path program 1 times [2023-11-06 22:49:17,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:17,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336276964] [2023-11-06 22:49:17,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:17,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:17,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:49:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:17,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:49:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:17,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:49:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:17,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:49:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:17,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:49:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:17,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:17,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336276964] [2023-11-06 22:49:17,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336276964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:17,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:17,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:49:17,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815276004] [2023-11-06 22:49:17,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:17,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:49:17,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:17,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:49:17,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:17,625 INFO L87 Difference]: Start difference. First operand 1959 states and 2441 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:20,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:20,796 INFO L93 Difference]: Finished difference Result 2479 states and 3272 transitions. [2023-11-06 22:49:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:20,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2023-11-06 22:49:20,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:20,802 INFO L225 Difference]: With dead ends: 2479 [2023-11-06 22:49:20,803 INFO L226 Difference]: Without dead ends: 2101 [2023-11-06 22:49:20,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:49:20,805 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1147 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:20,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 1026 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-06 22:49:20,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2023-11-06 22:49:21,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 1959. [2023-11-06 22:49:21,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1959 states, 1609 states have (on average 1.2442510876320696) internal successors, (2002), 1624 states have internal predecessors, (2002), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2023-11-06 22:49:21,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2440 transitions. [2023-11-06 22:49:21,310 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2440 transitions. Word has length 179 [2023-11-06 22:49:21,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:21,310 INFO L495 AbstractCegarLoop]: Abstraction has 1959 states and 2440 transitions. [2023-11-06 22:49:21,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:21,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2440 transitions. [2023-11-06 22:49:21,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:49:21,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:21,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:21,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:49:21,316 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:21,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:21,317 INFO L85 PathProgramCache]: Analyzing trace with hash -954638187, now seen corresponding path program 1 times [2023-11-06 22:49:21,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:21,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933089038] [2023-11-06 22:49:21,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:21,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:49:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:21,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:49:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:21,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:49:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:21,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:49:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:21,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:49:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:21,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:21,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:21,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933089038] [2023-11-06 22:49:21,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933089038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:21,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:21,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:49:21,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416989873] [2023-11-06 22:49:21,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:21,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:49:21,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:21,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:49:21,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:49:21,632 INFO L87 Difference]: Start difference. First operand 1959 states and 2440 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:26,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:26,667 INFO L93 Difference]: Finished difference Result 3011 states and 4129 transitions. [2023-11-06 22:49:26,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:49:26,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 179 [2023-11-06 22:49:26,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:26,675 INFO L225 Difference]: With dead ends: 3011 [2023-11-06 22:49:26,675 INFO L226 Difference]: Without dead ends: 2636 [2023-11-06 22:49:26,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:49:26,678 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1806 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:26,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1835 Valid, 1567 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-06 22:49:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2023-11-06 22:49:27,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2351. [2023-11-06 22:49:27,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2351 states, 1973 states have (on average 1.3061327927014699) internal successors, (2577), 1989 states have internal predecessors, (2577), 203 states have call successors, (203), 143 states have call predecessors, (203), 173 states have return successors, (280), 219 states have call predecessors, (280), 200 states have call successors, (280) [2023-11-06 22:49:27,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 3060 transitions. [2023-11-06 22:49:27,199 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 3060 transitions. Word has length 179 [2023-11-06 22:49:27,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:27,199 INFO L495 AbstractCegarLoop]: Abstraction has 2351 states and 3060 transitions. [2023-11-06 22:49:27,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 3060 transitions. [2023-11-06 22:49:27,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:49:27,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:27,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:27,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:49:27,205 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:27,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:27,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1954589329, now seen corresponding path program 1 times [2023-11-06 22:49:27,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:27,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333689971] [2023-11-06 22:49:27,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:27,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:27,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:49:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:27,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:49:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:27,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:49:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:27,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:49:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:27,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:49:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:27,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:27,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333689971] [2023-11-06 22:49:27,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333689971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:27,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:27,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:49:27,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166217570] [2023-11-06 22:49:27,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:27,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:27,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:27,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:27,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:27,560 INFO L87 Difference]: Start difference. First operand 2351 states and 3060 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:33,903 INFO L93 Difference]: Finished difference Result 3958 states and 5647 transitions. [2023-11-06 22:49:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:49:33,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2023-11-06 22:49:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:33,916 INFO L225 Difference]: With dead ends: 3958 [2023-11-06 22:49:33,916 INFO L226 Difference]: Without dead ends: 3191 [2023-11-06 22:49:33,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:49:33,925 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1845 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 3833 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 3933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:33,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1874 Valid, 2894 Invalid, 3933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3833 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-06 22:49:33,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2023-11-06 22:49:34,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 2717. [2023-11-06 22:49:34,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2311 states have (on average 1.3414106447425358) internal successors, (3100), 2328 states have internal predecessors, (3100), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2023-11-06 22:49:34,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 3627 transitions. [2023-11-06 22:49:34,504 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 3627 transitions. Word has length 179 [2023-11-06 22:49:34,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:34,505 INFO L495 AbstractCegarLoop]: Abstraction has 2717 states and 3627 transitions. [2023-11-06 22:49:34,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:34,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 3627 transitions. [2023-11-06 22:49:34,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:49:34,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:34,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:34,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:49:34,510 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:34,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:34,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1343320271, now seen corresponding path program 1 times [2023-11-06 22:49:34,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:34,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297437480] [2023-11-06 22:49:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:34,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:34,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:49:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:34,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:49:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:34,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:49:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:34,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:49:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:34,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:49:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:34,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:34,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:34,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297437480] [2023-11-06 22:49:34,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297437480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:34,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:34,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:49:34,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187750089] [2023-11-06 22:49:34,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:34,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:34,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:34,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:34,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:34,841 INFO L87 Difference]: Start difference. First operand 2717 states and 3627 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:38,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:38,275 INFO L93 Difference]: Finished difference Result 4340 states and 6252 transitions. [2023-11-06 22:49:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:38,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2023-11-06 22:49:38,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:38,289 INFO L225 Difference]: With dead ends: 4340 [2023-11-06 22:49:38,289 INFO L226 Difference]: Without dead ends: 3207 [2023-11-06 22:49:38,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:49:38,294 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1590 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:38,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 1325 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-06 22:49:38,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3207 states. [2023-11-06 22:49:38,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3207 to 2717. [2023-11-06 22:49:38,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2311 states have (on average 1.3401125054089138) internal successors, (3097), 2328 states have internal predecessors, (3097), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2023-11-06 22:49:38,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 3624 transitions. [2023-11-06 22:49:38,955 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 3624 transitions. Word has length 179 [2023-11-06 22:49:38,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:38,955 INFO L495 AbstractCegarLoop]: Abstraction has 2717 states and 3624 transitions. [2023-11-06 22:49:38,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:38,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 3624 transitions. [2023-11-06 22:49:38,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:49:38,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:38,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:38,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:49:38,960 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:38,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:38,961 INFO L85 PathProgramCache]: Analyzing trace with hash -61871407, now seen corresponding path program 1 times [2023-11-06 22:49:38,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:38,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313705422] [2023-11-06 22:49:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:38,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:39,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:49:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:39,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:49:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:49:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:39,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:49:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:39,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:49:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:39,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:39,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313705422] [2023-11-06 22:49:39,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313705422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:39,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:39,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:49:39,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918199550] [2023-11-06 22:49:39,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:39,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:39,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:39,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:39,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:39,273 INFO L87 Difference]: Start difference. First operand 2717 states and 3624 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:42,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:42,456 INFO L93 Difference]: Finished difference Result 4336 states and 6235 transitions. [2023-11-06 22:49:42,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:42,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2023-11-06 22:49:42,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:42,467 INFO L225 Difference]: With dead ends: 4336 [2023-11-06 22:49:42,467 INFO L226 Difference]: Without dead ends: 3203 [2023-11-06 22:49:42,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:49:42,472 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1588 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 1827 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:42,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 1325 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1827 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-06 22:49:42,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2023-11-06 22:49:43,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 2717. [2023-11-06 22:49:43,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2311 states have (on average 1.338814366075292) internal successors, (3094), 2328 states have internal predecessors, (3094), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2023-11-06 22:49:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 3621 transitions. [2023-11-06 22:49:43,042 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 3621 transitions. Word has length 179 [2023-11-06 22:49:43,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:43,043 INFO L495 AbstractCegarLoop]: Abstraction has 2717 states and 3621 transitions. [2023-11-06 22:49:43,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 3621 transitions. [2023-11-06 22:49:43,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:49:43,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:43,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:43,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 22:49:43,048 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:43,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:43,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1832462479, now seen corresponding path program 1 times [2023-11-06 22:49:43,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:43,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82657478] [2023-11-06 22:49:43,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:43,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:43,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:49:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:49:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:49:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:43,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:49:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:43,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:49:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:43,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:43,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:43,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82657478] [2023-11-06 22:49:43,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82657478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:43,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:43,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:49:43,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244003148] [2023-11-06 22:49:43,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:43,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:43,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:43,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:43,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:43,405 INFO L87 Difference]: Start difference. First operand 2717 states and 3621 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:49,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:49,909 INFO L93 Difference]: Finished difference Result 5345 states and 7816 transitions. [2023-11-06 22:49:49,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:49:49,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2023-11-06 22:49:49,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:49,922 INFO L225 Difference]: With dead ends: 5345 [2023-11-06 22:49:49,922 INFO L226 Difference]: Without dead ends: 4212 [2023-11-06 22:49:49,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:49:49,928 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 1826 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 3758 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 3860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:49,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1855 Valid, 2892 Invalid, 3860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3758 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-06 22:49:49,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2023-11-06 22:49:50,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 3458. [2023-11-06 22:49:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 2996 states have (on average 1.3848464619492658) internal successors, (4149), 3015 states have internal predecessors, (4149), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2023-11-06 22:49:50,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4768 transitions. [2023-11-06 22:49:50,790 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4768 transitions. Word has length 179 [2023-11-06 22:49:50,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:50,790 INFO L495 AbstractCegarLoop]: Abstraction has 3458 states and 4768 transitions. [2023-11-06 22:49:50,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:50,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4768 transitions. [2023-11-06 22:49:50,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:49:50,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:50,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:50,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 22:49:50,796 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:50,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:50,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1015923951, now seen corresponding path program 1 times [2023-11-06 22:49:50,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:50,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469669539] [2023-11-06 22:49:50,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:50,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:50,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:49:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:51,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:49:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:51,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:49:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:51,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:49:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:51,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:49:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:51,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:51,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469669539] [2023-11-06 22:49:51,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469669539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:51,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:51,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:49:51,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209621987] [2023-11-06 22:49:51,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:51,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:51,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:51,111 INFO L87 Difference]: Start difference. First operand 3458 states and 4768 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:54,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:54,930 INFO L93 Difference]: Finished difference Result 6072 states and 8950 transitions. [2023-11-06 22:49:54,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:54,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2023-11-06 22:49:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:54,950 INFO L225 Difference]: With dead ends: 6072 [2023-11-06 22:49:54,950 INFO L226 Difference]: Without dead ends: 4198 [2023-11-06 22:49:54,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:49:54,957 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1369 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:54,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 1588 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1980 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-06 22:49:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2023-11-06 22:49:55,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 3458. [2023-11-06 22:49:55,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 2996 states have (on average 1.3831775700934579) internal successors, (4144), 3015 states have internal predecessors, (4144), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2023-11-06 22:49:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4763 transitions. [2023-11-06 22:49:55,645 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4763 transitions. Word has length 179 [2023-11-06 22:49:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:55,646 INFO L495 AbstractCegarLoop]: Abstraction has 3458 states and 4763 transitions. [2023-11-06 22:49:55,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:55,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4763 transitions. [2023-11-06 22:49:55,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:49:55,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:55,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:55,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 22:49:55,651 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:55,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:55,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1939091377, now seen corresponding path program 1 times [2023-11-06 22:49:55,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:55,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610232808] [2023-11-06 22:49:55,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:55,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:55,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:49:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:55,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:49:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:55,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:49:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:56,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:49:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:56,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:49:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:56,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:56,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610232808] [2023-11-06 22:49:56,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610232808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:56,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:56,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:49:56,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886699284] [2023-11-06 22:49:56,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:56,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:56,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:56,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:56,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:56,034 INFO L87 Difference]: Start difference. First operand 3458 states and 4763 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:02,508 INFO L93 Difference]: Finished difference Result 8034 states and 12007 transitions. [2023-11-06 22:50:02,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:50:02,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2023-11-06 22:50:02,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:02,524 INFO L225 Difference]: With dead ends: 8034 [2023-11-06 22:50:02,524 INFO L226 Difference]: Without dead ends: 6160 [2023-11-06 22:50:02,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:50:02,530 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1917 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 3195 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 3345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 3195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:02,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 1909 Invalid, 3345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 3195 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-06 22:50:02,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2023-11-06 22:50:03,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 4944. [2023-11-06 22:50:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4944 states, 4370 states have (on average 1.4306636155606407) internal successors, (6252), 4393 states have internal predecessors, (6252), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2023-11-06 22:50:03,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4944 states to 4944 states and 7061 transitions. [2023-11-06 22:50:03,595 INFO L78 Accepts]: Start accepts. Automaton has 4944 states and 7061 transitions. Word has length 179 [2023-11-06 22:50:03,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:03,596 INFO L495 AbstractCegarLoop]: Abstraction has 4944 states and 7061 transitions. [2023-11-06 22:50:03,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:03,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4944 states and 7061 transitions. [2023-11-06 22:50:03,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:50:03,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:03,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:03,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-06 22:50:03,602 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:03,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:03,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1553228975, now seen corresponding path program 1 times [2023-11-06 22:50:03,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:03,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090767479] [2023-11-06 22:50:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:03,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:03,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:50:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:03,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:50:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:03,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:50:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:03,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:50:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:03,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:50:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:03,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:03,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090767479] [2023-11-06 22:50:03,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090767479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:03,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:03,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:50:03,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517941195] [2023-11-06 22:50:03,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:03,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:50:03,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:03,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:50:03,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:50:03,895 INFO L87 Difference]: Start difference. First operand 4944 states and 7061 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:08,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:08,259 INFO L93 Difference]: Finished difference Result 9540 states and 14373 transitions. [2023-11-06 22:50:08,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:50:08,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2023-11-06 22:50:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:08,273 INFO L225 Difference]: With dead ends: 9540 [2023-11-06 22:50:08,273 INFO L226 Difference]: Without dead ends: 6180 [2023-11-06 22:50:08,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:50:08,282 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1373 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 1949 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:08,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 1588 Invalid, 2053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1949 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-06 22:50:08,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6180 states. [2023-11-06 22:50:09,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6180 to 4944. [2023-11-06 22:50:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4944 states, 4370 states have (on average 1.428604118993135) internal successors, (6243), 4393 states have internal predecessors, (6243), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2023-11-06 22:50:09,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4944 states to 4944 states and 7052 transitions. [2023-11-06 22:50:09,318 INFO L78 Accepts]: Start accepts. Automaton has 4944 states and 7052 transitions. Word has length 179 [2023-11-06 22:50:09,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:09,318 INFO L495 AbstractCegarLoop]: Abstraction has 4944 states and 7052 transitions. [2023-11-06 22:50:09,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:09,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4944 states and 7052 transitions. [2023-11-06 22:50:09,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:50:09,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:09,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:09,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-06 22:50:09,324 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:09,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:09,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1817876465, now seen corresponding path program 1 times [2023-11-06 22:50:09,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:09,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601142746] [2023-11-06 22:50:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:09,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:50:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:50:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:09,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:50:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:09,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:50:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:09,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:50:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:09,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:09,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601142746] [2023-11-06 22:50:09,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601142746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:09,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:09,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:50:09,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536527530] [2023-11-06 22:50:09,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:09,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:50:09,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:09,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:50:09,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:50:09,608 INFO L87 Difference]: Start difference. First operand 4944 states and 7052 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:13,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:13,928 INFO L93 Difference]: Finished difference Result 9520 states and 14306 transitions. [2023-11-06 22:50:13,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:50:13,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2023-11-06 22:50:13,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:13,948 INFO L225 Difference]: With dead ends: 9520 [2023-11-06 22:50:13,948 INFO L226 Difference]: Without dead ends: 6160 [2023-11-06 22:50:13,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:50:13,956 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1370 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:13,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 1588 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1925 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 22:50:13,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2023-11-06 22:50:15,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 4944. [2023-11-06 22:50:15,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4944 states, 4370 states have (on average 1.4265446224256293) internal successors, (6234), 4393 states have internal predecessors, (6234), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2023-11-06 22:50:15,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4944 states to 4944 states and 7043 transitions. [2023-11-06 22:50:15,133 INFO L78 Accepts]: Start accepts. Automaton has 4944 states and 7043 transitions. Word has length 179 [2023-11-06 22:50:15,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:15,134 INFO L495 AbstractCegarLoop]: Abstraction has 4944 states and 7043 transitions. [2023-11-06 22:50:15,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:15,134 INFO L276 IsEmpty]: Start isEmpty. Operand 4944 states and 7043 transitions. [2023-11-06 22:50:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:50:15,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:15,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:15,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-06 22:50:15,139 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:15,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:15,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1153911885, now seen corresponding path program 1 times [2023-11-06 22:50:15,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:15,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888622404] [2023-11-06 22:50:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:15,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:50:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:15,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:50:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:15,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:50:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:15,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:50:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:15,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:50:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:15,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:15,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888622404] [2023-11-06 22:50:15,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888622404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:15,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:15,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:50:15,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101418284] [2023-11-06 22:50:15,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:15,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:50:15,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:15,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:50:15,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:50:15,465 INFO L87 Difference]: Start difference. First operand 4944 states and 7043 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:19,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:19,494 INFO L93 Difference]: Finished difference Result 9510 states and 14259 transitions. [2023-11-06 22:50:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:50:19,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2023-11-06 22:50:19,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:19,510 INFO L225 Difference]: With dead ends: 9510 [2023-11-06 22:50:19,510 INFO L226 Difference]: Without dead ends: 6150 [2023-11-06 22:50:19,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:50:19,518 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1586 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:19,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 1325 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1744 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 22:50:19,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2023-11-06 22:50:20,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 4944. [2023-11-06 22:50:20,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4944 states, 4370 states have (on average 1.4244851258581235) internal successors, (6225), 4393 states have internal predecessors, (6225), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2023-11-06 22:50:20,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4944 states to 4944 states and 7034 transitions. [2023-11-06 22:50:20,825 INFO L78 Accepts]: Start accepts. Automaton has 4944 states and 7034 transitions. Word has length 179 [2023-11-06 22:50:20,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:20,825 INFO L495 AbstractCegarLoop]: Abstraction has 4944 states and 7034 transitions. [2023-11-06 22:50:20,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:20,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4944 states and 7034 transitions. [2023-11-06 22:50:20,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:50:20,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:20,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:20,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-06 22:50:20,831 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:20,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:20,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1244075953, now seen corresponding path program 1 times [2023-11-06 22:50:20,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:20,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922905516] [2023-11-06 22:50:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:20,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:21,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:50:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:21,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:50:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:21,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:50:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:21,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:50:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:21,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:50:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:21,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:21,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:21,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922905516] [2023-11-06 22:50:21,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922905516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:21,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:21,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:50:21,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636439372] [2023-11-06 22:50:21,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:21,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:50:21,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:21,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:50:21,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:50:21,245 INFO L87 Difference]: Start difference. First operand 4944 states and 7034 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:29,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:29,424 INFO L93 Difference]: Finished difference Result 13382 states and 20239 transitions. [2023-11-06 22:50:29,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:50:29,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2023-11-06 22:50:29,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:29,452 INFO L225 Difference]: With dead ends: 13382 [2023-11-06 22:50:29,452 INFO L226 Difference]: Without dead ends: 10022 [2023-11-06 22:50:29,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:50:29,461 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 1798 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 3715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:29,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1827 Valid, 2892 Invalid, 3715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-06 22:50:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10022 states. [2023-11-06 22:50:31,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10022 to 7957. [2023-11-06 22:50:31,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7957 states, 7159 states have (on average 1.4626344461516971) internal successors, (10471), 7190 states have internal predecessors, (10471), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2023-11-06 22:50:31,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7957 states to 7957 states and 11678 transitions. [2023-11-06 22:50:31,666 INFO L78 Accepts]: Start accepts. Automaton has 7957 states and 11678 transitions. Word has length 179 [2023-11-06 22:50:31,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:31,667 INFO L495 AbstractCegarLoop]: Abstraction has 7957 states and 11678 transitions. [2023-11-06 22:50:31,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:31,667 INFO L276 IsEmpty]: Start isEmpty. Operand 7957 states and 11678 transitions. [2023-11-06 22:50:31,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:50:31,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:31,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:31,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-06 22:50:31,671 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:31,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:31,671 INFO L85 PathProgramCache]: Analyzing trace with hash -905788403, now seen corresponding path program 1 times [2023-11-06 22:50:31,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:31,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344207944] [2023-11-06 22:50:31,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:31,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:31,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:50:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:31,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:50:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:31,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:50:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:31,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:50:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:31,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:50:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:31,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:31,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344207944] [2023-11-06 22:50:31,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344207944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:31,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:31,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:50:31,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904206487] [2023-11-06 22:50:31,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:31,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:50:31,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:31,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:50:31,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:50:31,964 INFO L87 Difference]: Start difference. First operand 7957 states and 11678 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:37,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:37,488 INFO L93 Difference]: Finished difference Result 16452 states and 25070 transitions. [2023-11-06 22:50:37,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:50:37,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2023-11-06 22:50:37,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:37,509 INFO L225 Difference]: With dead ends: 16452 [2023-11-06 22:50:37,509 INFO L226 Difference]: Without dead ends: 10079 [2023-11-06 22:50:37,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:50:37,519 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1365 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:37,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 1586 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 22:50:37,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10079 states. [2023-11-06 22:50:39,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10079 to 7957. [2023-11-06 22:50:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7957 states, 7159 states have (on average 1.46025981282302) internal successors, (10454), 7190 states have internal predecessors, (10454), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2023-11-06 22:50:39,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7957 states to 7957 states and 11661 transitions. [2023-11-06 22:50:39,552 INFO L78 Accepts]: Start accepts. Automaton has 7957 states and 11661 transitions. Word has length 179 [2023-11-06 22:50:39,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:39,553 INFO L495 AbstractCegarLoop]: Abstraction has 7957 states and 11661 transitions. [2023-11-06 22:50:39,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:39,553 INFO L276 IsEmpty]: Start isEmpty. Operand 7957 states and 11661 transitions. [2023-11-06 22:50:39,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:50:39,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:39,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:39,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-06 22:50:39,559 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:39,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:39,559 INFO L85 PathProgramCache]: Analyzing trace with hash -479233905, now seen corresponding path program 1 times [2023-11-06 22:50:39,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:39,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846045205] [2023-11-06 22:50:39,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:39,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:39,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:50:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:39,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:50:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:39,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:50:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:39,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:50:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:50:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:39,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:39,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:39,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846045205] [2023-11-06 22:50:39,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846045205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:39,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:39,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:50:39,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070579713] [2023-11-06 22:50:39,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:39,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:50:39,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:39,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:50:39,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:50:39,879 INFO L87 Difference]: Start difference. First operand 7957 states and 11661 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:52,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:52,724 INFO L93 Difference]: Finished difference Result 26783 states and 41011 transitions. [2023-11-06 22:50:52,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:50:52,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2023-11-06 22:50:52,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:52,770 INFO L225 Difference]: With dead ends: 26783 [2023-11-06 22:50:52,771 INFO L226 Difference]: Without dead ends: 20410 [2023-11-06 22:50:52,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:50:52,790 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 2236 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 3567 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 3672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:52,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 2878 Invalid, 3672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3567 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 22:50:52,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20410 states. [2023-11-06 22:50:56,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20410 to 13831. [2023-11-06 22:50:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13831 states, 12601 states have (on average 1.4838504880565035) internal successors, (18698), 12648 states have internal predecessors, (18698), 838 states have call successors, (838), 329 states have call predecessors, (838), 390 states have return successors, (1187), 885 states have call predecessors, (1187), 835 states have call successors, (1187) [2023-11-06 22:50:56,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13831 states to 13831 states and 20723 transitions. [2023-11-06 22:50:56,269 INFO L78 Accepts]: Start accepts. Automaton has 13831 states and 20723 transitions. Word has length 179 [2023-11-06 22:50:56,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:56,269 INFO L495 AbstractCegarLoop]: Abstraction has 13831 states and 20723 transitions. [2023-11-06 22:50:56,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:56,269 INFO L276 IsEmpty]: Start isEmpty. Operand 13831 states and 20723 transitions. [2023-11-06 22:50:56,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:50:56,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:56,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:56,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-06 22:50:56,276 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:56,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:56,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1019663411, now seen corresponding path program 1 times [2023-11-06 22:50:56,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:56,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479962563] [2023-11-06 22:50:56,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:56,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:56,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:50:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:56,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:50:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:56,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:50:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:56,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:50:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:56,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:50:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:56,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:56,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479962563] [2023-11-06 22:50:56,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479962563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:56,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:56,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:50:56,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206345363] [2023-11-06 22:50:56,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:56,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:50:56,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:56,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:50:56,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:50:56,597 INFO L87 Difference]: Start difference. First operand 13831 states and 20723 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:51:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:51:16,551 INFO L93 Difference]: Finished difference Result 50031 states and 77259 transitions. [2023-11-06 22:51:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:51:16,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2023-11-06 22:51:16,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:51:16,639 INFO L225 Difference]: With dead ends: 50031 [2023-11-06 22:51:16,639 INFO L226 Difference]: Without dead ends: 37784 [2023-11-06 22:51:16,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:51:16,667 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1975 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 3780 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 3930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 3780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:51:16,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2003 Valid, 1907 Invalid, 3930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 3780 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 22:51:16,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37784 states. [2023-11-06 22:51:23,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37784 to 25688. [2023-11-06 22:51:23,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25688 states, 23610 states have (on average 1.5002117746717492) internal successors, (35420), 23689 states have internal predecessors, (35420), 1462 states have call successors, (1462), 521 states have call predecessors, (1462), 614 states have return successors, (2329), 1541 states have call predecessors, (2329), 1459 states have call successors, (2329) [2023-11-06 22:51:23,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25688 states to 25688 states and 39211 transitions. [2023-11-06 22:51:23,583 INFO L78 Accepts]: Start accepts. Automaton has 25688 states and 39211 transitions. Word has length 179 [2023-11-06 22:51:23,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:51:23,583 INFO L495 AbstractCegarLoop]: Abstraction has 25688 states and 39211 transitions. [2023-11-06 22:51:23,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:51:23,583 INFO L276 IsEmpty]: Start isEmpty. Operand 25688 states and 39211 transitions. [2023-11-06 22:51:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:51:23,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:51:23,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:23,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-06 22:51:23,597 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:51:23,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:23,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1175643953, now seen corresponding path program 1 times [2023-11-06 22:51:23,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:23,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483259192] [2023-11-06 22:51:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:23,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:23,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:51:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:23,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:51:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:23,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:51:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:23,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:51:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:23,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:51:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:23,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:23,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483259192] [2023-11-06 22:51:23,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483259192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:23,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:23,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:51:23,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510458914] [2023-11-06 22:51:23,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:23,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:51:23,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:23,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:51:23,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:51:23,974 INFO L87 Difference]: Start difference. First operand 25688 states and 39211 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:51:57,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:51:57,817 INFO L93 Difference]: Finished difference Result 96286 states and 150097 transitions. [2023-11-06 22:51:57,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:51:57,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2023-11-06 22:51:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:51:58,020 INFO L225 Difference]: With dead ends: 96286 [2023-11-06 22:51:58,020 INFO L226 Difference]: Without dead ends: 72182 [2023-11-06 22:51:58,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:51:58,072 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 2163 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 3537 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2205 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 3642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:51:58,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2205 Valid, 2882 Invalid, 3642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3537 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-06 22:51:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72182 states.