./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.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_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/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_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/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_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/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 c388302d41c726edd49d8ab9cbc4112c9573480c6a1055a6e43438be9deac626 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:10:21,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:10:21,697 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:10:21,701 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:10:21,702 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:10:21,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:10:21,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:10:21,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:10:21,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:10:21,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:10:21,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:10:21,755 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:10:21,756 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:10:21,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:10:21,758 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:10:21,759 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:10:21,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:10:21,760 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:10:21,760 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:10:21,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:10:21,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:10:21,762 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:10:21,762 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:10:21,763 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:10:21,763 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:10:21,764 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:10:21,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:10:21,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:10:21,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:10:21,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:10:21,768 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:10:21,768 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:10:21,768 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:10:21,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:10:21,769 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:10:21,769 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:10:21,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:10:21,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:10:21,770 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:10:21,770 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_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c388302d41c726edd49d8ab9cbc4112c9573480c6a1055a6e43438be9deac626 [2023-11-06 23:10:22,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:10:22,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:10:22,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:10:22,141 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:10:22,142 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:10:22,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c [2023-11-06 23:10:25,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:10:25,604 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:10:25,604 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c [2023-11-06 23:10:25,632 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/data/1cba11e85/2ba21b5a778f43b2bd656546c1dd2794/FLAGa6d40e383 [2023-11-06 23:10:25,650 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/data/1cba11e85/2ba21b5a778f43b2bd656546c1dd2794 [2023-11-06 23:10:25,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:10:25,654 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:10:25,656 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:10:25,656 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:10:25,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:10:25,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:10:25" (1/1) ... [2023-11-06 23:10:25,665 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd2b8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:25, skipping insertion in model container [2023-11-06 23:10:25,665 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:10:25" (1/1) ... [2023-11-06 23:10:25,714 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:10:25,848 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_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c[913,926] [2023-11-06 23:10:25,892 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_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c[5977,5990] [2023-11-06 23:10:25,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:10:25,968 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:10:25,984 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_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c[913,926] [2023-11-06 23:10:26,002 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_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.02.cil-1.c[5977,5990] [2023-11-06 23:10:26,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:10:26,060 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:10:26,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:26 WrapperNode [2023-11-06 23:10:26,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:10:26,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:10:26,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:10:26,063 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:10:26,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:26" (1/1) ... [2023-11-06 23:10:26,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:26" (1/1) ... [2023-11-06 23:10:26,128 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 485 [2023-11-06 23:10:26,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:10:26,129 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:10:26,129 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:10:26,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:10:26,140 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:26" (1/1) ... [2023-11-06 23:10:26,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:26" (1/1) ... [2023-11-06 23:10:26,148 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:26" (1/1) ... [2023-11-06 23:10:26,158 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:26" (1/1) ... [2023-11-06 23:10:26,169 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:26" (1/1) ... [2023-11-06 23:10:26,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:26" (1/1) ... [2023-11-06 23:10:26,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:26" (1/1) ... [2023-11-06 23:10:26,183 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:26" (1/1) ... [2023-11-06 23:10:26,188 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:10:26,189 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:10:26,189 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:10:26,189 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:10:26,190 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:26" (1/1) ... [2023-11-06 23:10:26,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:10:26,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:26,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:10:26,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:10:26,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:10:26,273 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-06 23:10:26,273 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-06 23:10:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-11-06 23:10:26,274 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-11-06 23:10:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-06 23:10:26,274 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-06 23:10:26,274 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-06 23:10:26,275 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-06 23:10:26,275 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-06 23:10:26,275 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-06 23:10:26,275 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-06 23:10:26,275 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-06 23:10:26,275 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-06 23:10:26,275 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-06 23:10:26,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:10:26,276 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-06 23:10:26,276 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-06 23:10:26,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:10:26,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:10:26,276 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-06 23:10:26,277 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-06 23:10:26,379 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:10:26,381 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:10:26,917 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:10:26,927 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:10:26,927 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-06 23:10:26,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:10:26 BoogieIcfgContainer [2023-11-06 23:10:26,930 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:10:26,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:10:26,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:10:26,936 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:10:26,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:10:25" (1/3) ... [2023-11-06 23:10:26,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624adc8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:10:26, skipping insertion in model container [2023-11-06 23:10:26,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:10:26" (2/3) ... [2023-11-06 23:10:26,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624adc8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:10:26, skipping insertion in model container [2023-11-06 23:10:26,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:10:26" (3/3) ... [2023-11-06 23:10:26,940 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.02.cil-1.c [2023-11-06 23:10:26,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:10:26,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 23:10:27,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:10:27,039 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;@669014b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:10:27,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 23:10:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 173 states have (on average 1.5549132947976878) internal successors, (269), 178 states have internal predecessors, (269), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 23:10:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-06 23:10:27,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:27,082 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] [2023-11-06 23:10:27,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:27,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:27,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1788777688, now seen corresponding path program 1 times [2023-11-06 23:10:27,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:27,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908704203] [2023-11-06 23:10:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:27,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:27,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:10:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:27,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 23:10:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:27,517 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 23:10:27,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:27,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908704203] [2023-11-06 23:10:27,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908704203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:27,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:27,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:10:27,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57525993] [2023-11-06 23:10:27,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:27,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:27,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:27,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:27,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:10:27,562 INFO L87 Difference]: Start difference. First operand has 207 states, 173 states have (on average 1.5549132947976878) internal successors, (269), 178 states have internal predecessors, (269), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:27,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:27,990 INFO L93 Difference]: Finished difference Result 469 states and 714 transitions. [2023-11-06 23:10:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:10:27,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2023-11-06 23:10:27,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:28,008 INFO L225 Difference]: With dead ends: 469 [2023-11-06 23:10:28,008 INFO L226 Difference]: Without dead ends: 267 [2023-11-06 23:10:28,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:10:28,026 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 346 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:28,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 460 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 23:10:28,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-11-06 23:10:28,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 261. [2023-11-06 23:10:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 222 states have (on average 1.4234234234234233) internal successors, (316), 226 states have internal predecessors, (316), 26 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) [2023-11-06 23:10:28,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 372 transitions. [2023-11-06 23:10:28,121 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 372 transitions. Word has length 44 [2023-11-06 23:10:28,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:28,122 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 372 transitions. [2023-11-06 23:10:28,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:28,122 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 372 transitions. [2023-11-06 23:10:28,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-06 23:10:28,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:28,131 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] [2023-11-06 23:10:28,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:10:28,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:28,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:28,133 INFO L85 PathProgramCache]: Analyzing trace with hash -964636669, now seen corresponding path program 1 times [2023-11-06 23:10:28,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:28,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076244298] [2023-11-06 23:10:28,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:28,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:28,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:10:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:28,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:10:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:28,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:28,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076244298] [2023-11-06 23:10:28,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076244298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:28,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:28,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:10:28,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141647181] [2023-11-06 23:10:28,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:28,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:28,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:28,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:28,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:10:28,264 INFO L87 Difference]: Start difference. First operand 261 states and 372 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:28,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:28,616 INFO L93 Difference]: Finished difference Result 509 states and 712 transitions. [2023-11-06 23:10:28,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:10:28,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2023-11-06 23:10:28,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:28,626 INFO L225 Difference]: With dead ends: 509 [2023-11-06 23:10:28,627 INFO L226 Difference]: Without dead ends: 385 [2023-11-06 23:10:28,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:10:28,631 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 169 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:28,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 583 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 23:10:28,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-11-06 23:10:28,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 328. [2023-11-06 23:10:28,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 283 states have (on average 1.4134275618374559) internal successors, (400), 287 states have internal predecessors, (400), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (33), 27 states have call predecessors, (33), 27 states have call successors, (33) [2023-11-06 23:10:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 462 transitions. [2023-11-06 23:10:28,676 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 462 transitions. Word has length 45 [2023-11-06 23:10:28,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:28,677 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 462 transitions. [2023-11-06 23:10:28,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:28,677 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 462 transitions. [2023-11-06 23:10:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-06 23:10:28,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:28,680 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] [2023-11-06 23:10:28,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:10:28,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:28,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:28,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2045973166, now seen corresponding path program 1 times [2023-11-06 23:10:28,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:28,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799150717] [2023-11-06 23:10:28,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:28,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:28,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:10:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:28,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:10:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:28,768 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 23:10:28,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:28,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799150717] [2023-11-06 23:10:28,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799150717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:28,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:28,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:10:28,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351876539] [2023-11-06 23:10:28,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:28,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:28,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:28,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:28,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:10:28,771 INFO L87 Difference]: Start difference. First operand 328 states and 462 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:29,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:29,076 INFO L93 Difference]: Finished difference Result 736 states and 1021 transitions. [2023-11-06 23:10:29,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:10:29,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2023-11-06 23:10:29,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:29,083 INFO L225 Difference]: With dead ends: 736 [2023-11-06 23:10:29,083 INFO L226 Difference]: Without dead ends: 545 [2023-11-06 23:10:29,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:10:29,091 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 356 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:29,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 449 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:10:29,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2023-11-06 23:10:29,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 493. [2023-11-06 23:10:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 429 states have (on average 1.3752913752913754) internal successors, (590), 436 states have internal predecessors, (590), 40 states have call successors, (40), 21 states have call predecessors, (40), 22 states have return successors, (50), 36 states have call predecessors, (50), 38 states have call successors, (50) [2023-11-06 23:10:29,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 680 transitions. [2023-11-06 23:10:29,201 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 680 transitions. Word has length 45 [2023-11-06 23:10:29,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:29,202 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 680 transitions. [2023-11-06 23:10:29,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:10:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 680 transitions. [2023-11-06 23:10:29,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-06 23:10:29,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:29,209 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] [2023-11-06 23:10:29,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:10:29,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:29,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:29,210 INFO L85 PathProgramCache]: Analyzing trace with hash -544385256, now seen corresponding path program 1 times [2023-11-06 23:10:29,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:29,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110982312] [2023-11-06 23:10:29,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:29,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:10:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:29,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 23:10:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:29,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 23:10:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:29,329 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 23:10:29,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:29,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110982312] [2023-11-06 23:10:29,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110982312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:29,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:29,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:10:29,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801158089] [2023-11-06 23:10:29,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:29,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:29,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:29,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:29,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:10:29,333 INFO L87 Difference]: Start difference. First operand 493 states and 680 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:10:29,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:29,710 INFO L93 Difference]: Finished difference Result 1077 states and 1465 transitions. [2023-11-06 23:10:29,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:10:29,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2023-11-06 23:10:29,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:29,718 INFO L225 Difference]: With dead ends: 1077 [2023-11-06 23:10:29,720 INFO L226 Difference]: Without dead ends: 721 [2023-11-06 23:10:29,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:10:29,732 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 153 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:29,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 636 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:10:29,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2023-11-06 23:10:29,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 683. [2023-11-06 23:10:29,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 595 states have (on average 1.3277310924369747) internal successors, (790), 604 states have internal predecessors, (790), 54 states have call successors, (54), 29 states have call predecessors, (54), 32 states have return successors, (74), 50 states have call predecessors, (74), 52 states have call successors, (74) [2023-11-06 23:10:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 918 transitions. [2023-11-06 23:10:29,815 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 918 transitions. Word has length 62 [2023-11-06 23:10:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:29,817 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 918 transitions. [2023-11-06 23:10:29,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:10:29,817 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 918 transitions. [2023-11-06 23:10:29,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 23:10:29,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:29,821 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] [2023-11-06 23:10:29,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:10:29,821 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:29,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:29,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1324290499, now seen corresponding path program 1 times [2023-11-06 23:10:29,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:29,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596990777] [2023-11-06 23:10:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:29,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:29,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:10:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:29,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 23:10:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:29,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 23:10:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-06 23:10:29,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:29,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596990777] [2023-11-06 23:10:29,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596990777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:29,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:29,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:10:29,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77198272] [2023-11-06 23:10:29,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:29,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:29,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:29,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:29,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:10:29,947 INFO L87 Difference]: Start difference. First operand 683 states and 918 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 23:10:30,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:30,248 INFO L93 Difference]: Finished difference Result 1336 states and 1771 transitions. [2023-11-06 23:10:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:10:30,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2023-11-06 23:10:30,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:30,255 INFO L225 Difference]: With dead ends: 1336 [2023-11-06 23:10:30,256 INFO L226 Difference]: Without dead ends: 882 [2023-11-06 23:10:30,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:10:30,258 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 343 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:30,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 448 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:10:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2023-11-06 23:10:30,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 827. [2023-11-06 23:10:30,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 723 states have (on average 1.301521438450899) internal successors, (941), 734 states have internal predecessors, (941), 62 states have call successors, (62), 35 states have call predecessors, (62), 40 states have return successors, (88), 58 states have call predecessors, (88), 60 states have call successors, (88) [2023-11-06 23:10:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1091 transitions. [2023-11-06 23:10:30,363 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1091 transitions. Word has length 67 [2023-11-06 23:10:30,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:30,364 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1091 transitions. [2023-11-06 23:10:30,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 23:10:30,365 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1091 transitions. [2023-11-06 23:10:30,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 23:10:30,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:30,368 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] [2023-11-06 23:10:30,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:10:30,369 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:30,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:30,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1855697567, now seen corresponding path program 1 times [2023-11-06 23:10:30,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:30,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197732590] [2023-11-06 23:10:30,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:30,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:30,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:10:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:30,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:10:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:30,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:10:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:30,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:10:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:30,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:10:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:30,531 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 23:10:30,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:30,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197732590] [2023-11-06 23:10:30,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197732590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:30,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:30,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:10:30,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988758431] [2023-11-06 23:10:30,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:30,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:10:30,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:30,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:10:30,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:10:30,534 INFO L87 Difference]: Start difference. First operand 827 states and 1091 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:31,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:31,533 INFO L93 Difference]: Finished difference Result 1129 states and 1544 transitions. [2023-11-06 23:10:31,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 23:10:31,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2023-11-06 23:10:31,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:31,541 INFO L225 Difference]: With dead ends: 1129 [2023-11-06 23:10:31,541 INFO L226 Difference]: Without dead ends: 1009 [2023-11-06 23:10:31,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:10:31,543 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 561 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:31,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 667 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 23:10:31,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2023-11-06 23:10:31,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 946. [2023-11-06 23:10:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 824 states have (on average 1.3228155339805825) internal successors, (1090), 836 states have internal predecessors, (1090), 73 states have call successors, (73), 41 states have call predecessors, (73), 47 states have return successors, (102), 69 states have call predecessors, (102), 71 states have call successors, (102) [2023-11-06 23:10:31,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1265 transitions. [2023-11-06 23:10:31,700 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1265 transitions. Word has length 68 [2023-11-06 23:10:31,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:31,701 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1265 transitions. [2023-11-06 23:10:31,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:31,701 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1265 transitions. [2023-11-06 23:10:31,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 23:10:31,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:31,704 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] [2023-11-06 23:10:31,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:10:31,705 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:31,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:31,705 INFO L85 PathProgramCache]: Analyzing trace with hash -911935709, now seen corresponding path program 1 times [2023-11-06 23:10:31,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:31,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268757693] [2023-11-06 23:10:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:31,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:31,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:10:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:31,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:10:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:31,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:10:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:31,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:10:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:10:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:31,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:31,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268757693] [2023-11-06 23:10:31,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268757693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:31,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:31,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:10:31,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898993665] [2023-11-06 23:10:31,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:31,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:10:31,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:31,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:10:31,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:31,880 INFO L87 Difference]: Start difference. First operand 946 states and 1265 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:33,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:33,148 INFO L93 Difference]: Finished difference Result 1398 states and 1934 transitions. [2023-11-06 23:10:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 23:10:33,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2023-11-06 23:10:33,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:33,161 INFO L225 Difference]: With dead ends: 1398 [2023-11-06 23:10:33,161 INFO L226 Difference]: Without dead ends: 1159 [2023-11-06 23:10:33,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:10:33,165 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 564 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:33,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1096 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 23:10:33,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2023-11-06 23:10:33,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1058. [2023-11-06 23:10:33,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 918 states have (on average 1.3344226579520697) internal successors, (1225), 931 states have internal predecessors, (1225), 84 states have call successors, (84), 47 states have call predecessors, (84), 54 states have return successors, (115), 81 states have call predecessors, (115), 82 states have call successors, (115) [2023-11-06 23:10:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1424 transitions. [2023-11-06 23:10:33,347 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1424 transitions. Word has length 68 [2023-11-06 23:10:33,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:33,348 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1424 transitions. [2023-11-06 23:10:33,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:33,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1424 transitions. [2023-11-06 23:10:33,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 23:10:33,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:33,352 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] [2023-11-06 23:10:33,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:10:33,353 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:33,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:33,354 INFO L85 PathProgramCache]: Analyzing trace with hash -35916703, now seen corresponding path program 1 times [2023-11-06 23:10:33,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:33,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124209546] [2023-11-06 23:10:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:33,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:10:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:10:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:10:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:10:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:10:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,551 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 23:10:33,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:33,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124209546] [2023-11-06 23:10:33,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124209546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:33,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:33,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:10:33,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191192847] [2023-11-06 23:10:33,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:33,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:10:33,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:33,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:10:33,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:33,554 INFO L87 Difference]: Start difference. First operand 1058 states and 1424 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:34,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:34,910 INFO L93 Difference]: Finished difference Result 1866 states and 2613 transitions. [2023-11-06 23:10:34,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 23:10:34,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2023-11-06 23:10:34,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:34,921 INFO L225 Difference]: With dead ends: 1866 [2023-11-06 23:10:34,921 INFO L226 Difference]: Without dead ends: 1515 [2023-11-06 23:10:34,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:10:34,924 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 581 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:34,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1084 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 23:10:34,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2023-11-06 23:10:35,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1280. [2023-11-06 23:10:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1106 states have (on average 1.3544303797468353) internal successors, (1498), 1121 states have internal predecessors, (1498), 104 states have call successors, (104), 59 states have call predecessors, (104), 68 states have return successors, (143), 103 states have call predecessors, (143), 102 states have call successors, (143) [2023-11-06 23:10:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1745 transitions. [2023-11-06 23:10:35,100 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1745 transitions. Word has length 68 [2023-11-06 23:10:35,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:35,100 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1745 transitions. [2023-11-06 23:10:35,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:35,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1745 transitions. [2023-11-06 23:10:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 23:10:35,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:35,104 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] [2023-11-06 23:10:35,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:10:35,105 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:35,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:35,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1502423327, now seen corresponding path program 1 times [2023-11-06 23:10:35,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:35,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843405865] [2023-11-06 23:10:35,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:35,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:35,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:10:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:35,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:10:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:35,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:10:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:10:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:35,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:10:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:35,278 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 23:10:35,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:35,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843405865] [2023-11-06 23:10:35,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843405865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:35,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:35,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:10:35,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341247342] [2023-11-06 23:10:35,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:35,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:10:35,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:10:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:35,282 INFO L87 Difference]: Start difference. First operand 1280 states and 1745 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:36,583 INFO L93 Difference]: Finished difference Result 2644 states and 3738 transitions. [2023-11-06 23:10:36,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 23:10:36,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2023-11-06 23:10:36,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:36,597 INFO L225 Difference]: With dead ends: 2644 [2023-11-06 23:10:36,597 INFO L226 Difference]: Without dead ends: 2071 [2023-11-06 23:10:36,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:10:36,602 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 613 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:36,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 1080 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 23:10:36,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2023-11-06 23:10:36,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1699. [2023-11-06 23:10:36,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1459 states have (on average 1.3762851267991776) internal successors, (2008), 1478 states have internal predecessors, (2008), 142 states have call successors, (142), 83 states have call predecessors, (142), 96 states have return successors, (203), 145 states have call predecessors, (203), 140 states have call successors, (203) [2023-11-06 23:10:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2353 transitions. [2023-11-06 23:10:36,823 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2353 transitions. Word has length 68 [2023-11-06 23:10:36,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:36,824 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2353 transitions. [2023-11-06 23:10:36,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:36,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2353 transitions. [2023-11-06 23:10:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 23:10:36,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:36,831 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] [2023-11-06 23:10:36,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:10:36,831 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:36,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:36,832 INFO L85 PathProgramCache]: Analyzing trace with hash -526162783, now seen corresponding path program 1 times [2023-11-06 23:10:36,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:36,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84262225] [2023-11-06 23:10:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:36,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:36,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:10:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:36,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:10:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:36,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:10:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:37,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:10:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:37,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:10:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:37,018 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 23:10:37,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:37,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84262225] [2023-11-06 23:10:37,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84262225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:37,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:37,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:10:37,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467543614] [2023-11-06 23:10:37,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:37,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:10:37,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:37,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:10:37,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:37,025 INFO L87 Difference]: Start difference. First operand 1699 states and 2353 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:38,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:38,426 INFO L93 Difference]: Finished difference Result 4047 states and 5774 transitions. [2023-11-06 23:10:38,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 23:10:38,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2023-11-06 23:10:38,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:38,447 INFO L225 Difference]: With dead ends: 4047 [2023-11-06 23:10:38,447 INFO L226 Difference]: Without dead ends: 3055 [2023-11-06 23:10:38,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:10:38,452 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 571 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:38,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1058 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 23:10:38,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2023-11-06 23:10:38,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 2546. [2023-11-06 23:10:38,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 2182 states have (on average 1.4023831347387719) internal successors, (3060), 2209 states have internal predecessors, (3060), 212 states have call successors, (212), 129 states have call predecessors, (212), 150 states have return successors, (335), 223 states have call predecessors, (335), 210 states have call successors, (335) [2023-11-06 23:10:38,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 3607 transitions. [2023-11-06 23:10:38,796 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 3607 transitions. Word has length 68 [2023-11-06 23:10:38,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:38,797 INFO L495 AbstractCegarLoop]: Abstraction has 2546 states and 3607 transitions. [2023-11-06 23:10:38,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:38,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 3607 transitions. [2023-11-06 23:10:38,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 23:10:38,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:38,802 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] [2023-11-06 23:10:38,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:10:38,802 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:38,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:38,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1007243041, now seen corresponding path program 1 times [2023-11-06 23:10:38,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:38,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60450382] [2023-11-06 23:10:38,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:38,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:38,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:10:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:38,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:10:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:38,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:10:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:38,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:10:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:38,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:10:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:38,920 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 23:10:38,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:38,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60450382] [2023-11-06 23:10:38,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60450382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:38,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:38,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:10:38,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686874406] [2023-11-06 23:10:38,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:38,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:10:38,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:38,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:10:38,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:38,923 INFO L87 Difference]: Start difference. First operand 2546 states and 3607 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:40,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:40,263 INFO L93 Difference]: Finished difference Result 5380 states and 7783 transitions. [2023-11-06 23:10:40,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:10:40,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2023-11-06 23:10:40,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:40,287 INFO L225 Difference]: With dead ends: 5380 [2023-11-06 23:10:40,287 INFO L226 Difference]: Without dead ends: 3542 [2023-11-06 23:10:40,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:10:40,295 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 302 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:40,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 924 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 23:10:40,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3542 states. [2023-11-06 23:10:40,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3542 to 2597. [2023-11-06 23:10:40,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2597 states, 2233 states have (on average 1.3931930138826691) internal successors, (3111), 2260 states have internal predecessors, (3111), 212 states have call successors, (212), 129 states have call predecessors, (212), 150 states have return successors, (335), 223 states have call predecessors, (335), 210 states have call successors, (335) [2023-11-06 23:10:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 3658 transitions. [2023-11-06 23:10:40,666 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 3658 transitions. Word has length 68 [2023-11-06 23:10:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:40,666 INFO L495 AbstractCegarLoop]: Abstraction has 2597 states and 3658 transitions. [2023-11-06 23:10:40,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:40,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 3658 transitions. [2023-11-06 23:10:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 23:10:40,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:40,671 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] [2023-11-06 23:10:40,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:10:40,672 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:40,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:40,673 INFO L85 PathProgramCache]: Analyzing trace with hash -583596319, now seen corresponding path program 1 times [2023-11-06 23:10:40,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:40,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000206585] [2023-11-06 23:10:40,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:40,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:40,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:10:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:40,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:10:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:40,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:10:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:40,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:10:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:40,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:10:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:40,804 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 23:10:40,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:40,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000206585] [2023-11-06 23:10:40,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000206585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:40,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:40,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:10:40,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243080541] [2023-11-06 23:10:40,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:40,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:10:40,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:40,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:10:40,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:40,807 INFO L87 Difference]: Start difference. First operand 2597 states and 3658 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:43,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:43,112 INFO L93 Difference]: Finished difference Result 8974 states and 13198 transitions. [2023-11-06 23:10:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 23:10:43,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2023-11-06 23:10:43,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:43,170 INFO L225 Difference]: With dead ends: 8974 [2023-11-06 23:10:43,170 INFO L226 Difference]: Without dead ends: 7085 [2023-11-06 23:10:43,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-11-06 23:10:43,183 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1207 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:43,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 879 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 23:10:43,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7085 states. [2023-11-06 23:10:44,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7085 to 6140. [2023-11-06 23:10:44,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6140 states, 5208 states have (on average 1.4053379416282643) internal successors, (7319), 5294 states have internal predecessors, (7319), 542 states have call successors, (542), 335 states have call predecessors, (542), 388 states have return successors, (912), 526 states have call predecessors, (912), 540 states have call successors, (912) [2023-11-06 23:10:44,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6140 states to 6140 states and 8773 transitions. [2023-11-06 23:10:44,119 INFO L78 Accepts]: Start accepts. Automaton has 6140 states and 8773 transitions. Word has length 68 [2023-11-06 23:10:44,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:44,119 INFO L495 AbstractCegarLoop]: Abstraction has 6140 states and 8773 transitions. [2023-11-06 23:10:44,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:10:44,120 INFO L276 IsEmpty]: Start isEmpty. Operand 6140 states and 8773 transitions. [2023-11-06 23:10:44,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 23:10:44,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:44,124 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:44,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 23:10:44,125 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:44,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:44,126 INFO L85 PathProgramCache]: Analyzing trace with hash 491350726, now seen corresponding path program 1 times [2023-11-06 23:10:44,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:44,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599737760] [2023-11-06 23:10:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:44,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:44,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:10:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:44,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 23:10:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:44,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 23:10:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:10:44,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:44,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599737760] [2023-11-06 23:10:44,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599737760] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:44,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579629117] [2023-11-06 23:10:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:44,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:44,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:44,224 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:44,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:10:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:44,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:10:44,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:44,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:10:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 23:10:44,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579629117] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:44,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:10:44,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2023-11-06 23:10:44,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42382000] [2023-11-06 23:10:44,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:44,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:44,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:44,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:44,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:10:44,577 INFO L87 Difference]: Start difference. First operand 6140 states and 8773 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:10:45,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:45,613 INFO L93 Difference]: Finished difference Result 6196 states and 8841 transitions. [2023-11-06 23:10:45,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:10:45,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2023-11-06 23:10:45,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:45,656 INFO L225 Difference]: With dead ends: 6196 [2023-11-06 23:10:45,656 INFO L226 Difference]: Without dead ends: 6193 [2023-11-06 23:10:45,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:10:45,661 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 485 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:45,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 372 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:10:45,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6193 states. [2023-11-06 23:10:46,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6193 to 6139. [2023-11-06 23:10:46,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6139 states, 5208 states have (on average 1.4049539170506913) internal successors, (7317), 5293 states have internal predecessors, (7317), 541 states have call successors, (541), 335 states have call predecessors, (541), 388 states have return successors, (912), 526 states have call predecessors, (912), 540 states have call successors, (912) [2023-11-06 23:10:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6139 states to 6139 states and 8770 transitions. [2023-11-06 23:10:46,648 INFO L78 Accepts]: Start accepts. Automaton has 6139 states and 8770 transitions. Word has length 68 [2023-11-06 23:10:46,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:46,648 INFO L495 AbstractCegarLoop]: Abstraction has 6139 states and 8770 transitions. [2023-11-06 23:10:46,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:10:46,649 INFO L276 IsEmpty]: Start isEmpty. Operand 6139 states and 8770 transitions. [2023-11-06 23:10:46,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 23:10:46,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:46,654 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:46,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 23:10:46,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:46,859 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:46,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:46,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1948658970, now seen corresponding path program 1 times [2023-11-06 23:10:46,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:46,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286261130] [2023-11-06 23:10:46,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:46,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:46,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:10:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:46,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 23:10:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 23:10:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:10:46,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:46,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286261130] [2023-11-06 23:10:46,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286261130] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:46,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594390251] [2023-11-06 23:10:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:46,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:46,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:46,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:47,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:10:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:47,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 23:10:47,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:47,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:10:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 23:10:47,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594390251] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:10:47,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:10:47,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2023-11-06 23:10:47,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425248859] [2023-11-06 23:10:47,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:10:47,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 23:10:47,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:47,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 23:10:47,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:10:47,399 INFO L87 Difference]: Start difference. First operand 6139 states and 8770 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-06 23:10:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:49,474 INFO L93 Difference]: Finished difference Result 7839 states and 10990 transitions. [2023-11-06 23:10:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-06 23:10:49,484 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2023-11-06 23:10:49,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:49,537 INFO L225 Difference]: With dead ends: 7839 [2023-11-06 23:10:49,538 INFO L226 Difference]: Without dead ends: 7295 [2023-11-06 23:10:49,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=292, Invalid=1514, Unknown=0, NotChecked=0, Total=1806 [2023-11-06 23:10:49,545 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 655 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:49,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 2099 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 23:10:49,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7295 states. [2023-11-06 23:10:50,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7295 to 6528. [2023-11-06 23:10:50,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6528 states, 5558 states have (on average 1.3945663907880532) internal successors, (7751), 5651 states have internal predecessors, (7751), 561 states have call successors, (561), 349 states have call predecessors, (561), 407 states have return successors, (946), 543 states have call predecessors, (946), 560 states have call successors, (946) [2023-11-06 23:10:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6528 states to 6528 states and 9258 transitions. [2023-11-06 23:10:50,853 INFO L78 Accepts]: Start accepts. Automaton has 6528 states and 9258 transitions. Word has length 69 [2023-11-06 23:10:50,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:50,854 INFO L495 AbstractCegarLoop]: Abstraction has 6528 states and 9258 transitions. [2023-11-06 23:10:50,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-06 23:10:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 6528 states and 9258 transitions. [2023-11-06 23:10:50,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-06 23:10:50,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:50,867 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 23:10:50,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:51,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 23:10:51,073 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:51,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:51,073 INFO L85 PathProgramCache]: Analyzing trace with hash -104048128, now seen corresponding path program 1 times [2023-11-06 23:10:51,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:51,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829010749] [2023-11-06 23:10:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:51,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:51,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:10:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:51,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 23:10:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 23:10:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:51,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 23:10:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 23:10:51,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:51,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829010749] [2023-11-06 23:10:51,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829010749] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:51,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765991623] [2023-11-06 23:10:51,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:51,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:51,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:51,202 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:51,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:10:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:51,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:10:51,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 23:10:51,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:51,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765991623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:51,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:10:51,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-06 23:10:51,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263471374] [2023-11-06 23:10:51,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:51,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:51,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:51,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:51,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:51,355 INFO L87 Difference]: Start difference. First operand 6528 states and 9258 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-06 23:10:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:52,050 INFO L93 Difference]: Finished difference Result 7251 states and 10196 transitions. [2023-11-06 23:10:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:52,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2023-11-06 23:10:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:52,075 INFO L225 Difference]: With dead ends: 7251 [2023-11-06 23:10:52,075 INFO L226 Difference]: Without dead ends: 6406 [2023-11-06 23:10:52,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:52,082 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 241 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:52,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 386 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6406 states. [2023-11-06 23:10:53,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6406 to 6391. [2023-11-06 23:10:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6391 states, 5437 states have (on average 1.3965422107780026) internal successors, (7593), 5529 states have internal predecessors, (7593), 553 states have call successors, (553), 343 states have call predecessors, (553), 399 states have return successors, (932), 534 states have call predecessors, (932), 552 states have call successors, (932) [2023-11-06 23:10:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6391 states to 6391 states and 9078 transitions. [2023-11-06 23:10:53,039 INFO L78 Accepts]: Start accepts. Automaton has 6391 states and 9078 transitions. Word has length 88 [2023-11-06 23:10:53,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:53,039 INFO L495 AbstractCegarLoop]: Abstraction has 6391 states and 9078 transitions. [2023-11-06 23:10:53,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-06 23:10:53,040 INFO L276 IsEmpty]: Start isEmpty. Operand 6391 states and 9078 transitions. [2023-11-06 23:10:53,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-06 23:10:53,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:53,053 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 23:10:53,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:53,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 23:10:53,258 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:53,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:53,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1699839397, now seen corresponding path program 1 times [2023-11-06 23:10:53,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:53,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606217731] [2023-11-06 23:10:53,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:53,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:53,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:10:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:53,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 23:10:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:53,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 23:10:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:53,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-06 23:10:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:53,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 23:10:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 23:10:53,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:53,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606217731] [2023-11-06 23:10:53,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606217731] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:53,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847638189] [2023-11-06 23:10:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:53,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:53,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:53,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:53,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:10:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:53,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:10:53,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 23:10:53,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:53,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847638189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:53,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:10:53,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-06 23:10:53,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709387667] [2023-11-06 23:10:53,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:53,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:53,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:53,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:53,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:53,533 INFO L87 Difference]: Start difference. First operand 6391 states and 9078 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 23:10:54,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:54,552 INFO L93 Difference]: Finished difference Result 6770 states and 9546 transitions. [2023-11-06 23:10:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:54,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2023-11-06 23:10:54,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:54,572 INFO L225 Difference]: With dead ends: 6770 [2023-11-06 23:10:54,572 INFO L226 Difference]: Without dead ends: 5444 [2023-11-06 23:10:54,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:54,579 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 62 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:54,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 582 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5444 states. [2023-11-06 23:10:55,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5444 to 5444. [2023-11-06 23:10:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5444 states, 4593 states have (on average 1.422817330720662) internal successors, (6535), 4669 states have internal predecessors, (6535), 496 states have call successors, (496), 306 states have call predecessors, (496), 354 states have return successors, (840), 484 states have call predecessors, (840), 496 states have call successors, (840) [2023-11-06 23:10:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 7871 transitions. [2023-11-06 23:10:55,305 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 7871 transitions. Word has length 103 [2023-11-06 23:10:55,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:55,305 INFO L495 AbstractCegarLoop]: Abstraction has 5444 states and 7871 transitions. [2023-11-06 23:10:55,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 23:10:55,306 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 7871 transitions. [2023-11-06 23:10:55,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 23:10:55,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:55,321 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:55,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:55,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:55,528 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:55,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:55,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1284841405, now seen corresponding path program 1 times [2023-11-06 23:10:55,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:55,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149929372] [2023-11-06 23:10:55,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:55,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:55,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:10:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:55,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:10:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:55,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:10:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:55,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:10:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:55,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:10:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:55,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 23:10:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:10:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:55,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-06 23:10:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 23:10:55,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:55,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149929372] [2023-11-06 23:10:55,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149929372] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:55,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237002667] [2023-11-06 23:10:55,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:55,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:55,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:55,697 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:55,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:10:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:55,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:10:55,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 23:10:55,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:55,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237002667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:55,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:10:55,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-06 23:10:55,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566093988] [2023-11-06 23:10:55,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:55,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:55,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:55,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:55,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:10:55,889 INFO L87 Difference]: Start difference. First operand 5444 states and 7871 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 23:10:57,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:57,221 INFO L93 Difference]: Finished difference Result 16101 states and 23500 transitions. [2023-11-06 23:10:57,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:57,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 111 [2023-11-06 23:10:57,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:57,259 INFO L225 Difference]: With dead ends: 16101 [2023-11-06 23:10:57,260 INFO L226 Difference]: Without dead ends: 10669 [2023-11-06 23:10:57,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:10:57,279 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 144 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:57,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 347 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:10:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10669 states. [2023-11-06 23:10:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10669 to 10563. [2023-11-06 23:10:58,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10563 states, 8906 states have (on average 1.4182573545924095) internal successors, (12631), 9057 states have internal predecessors, (12631), 954 states have call successors, (954), 606 states have call predecessors, (954), 702 states have return successors, (1612), 915 states have call predecessors, (1612), 954 states have call successors, (1612) [2023-11-06 23:10:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10563 states to 10563 states and 15197 transitions. [2023-11-06 23:10:58,574 INFO L78 Accepts]: Start accepts. Automaton has 10563 states and 15197 transitions. Word has length 111 [2023-11-06 23:10:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:58,574 INFO L495 AbstractCegarLoop]: Abstraction has 10563 states and 15197 transitions. [2023-11-06 23:10:58,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 23:10:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 10563 states and 15197 transitions. [2023-11-06 23:10:58,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 23:10:58,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:58,593 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:58,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:58,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 23:10:58,800 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:10:58,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:58,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2117569059, now seen corresponding path program 1 times [2023-11-06 23:10:58,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:58,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105631082] [2023-11-06 23:10:58,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:58,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:58,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:10:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:58,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:10:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:58,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:10:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:58,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:10:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:58,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:10:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:58,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 23:10:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:58,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:10:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:58,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-06 23:10:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 23:10:58,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:58,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105631082] [2023-11-06 23:10:58,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105631082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:58,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455638836] [2023-11-06 23:10:58,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:58,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:58,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:58,928 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:58,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:10:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:59,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:10:59,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 23:10:59,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:59,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455638836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:59,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:10:59,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-06 23:10:59,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614901643] [2023-11-06 23:10:59,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:59,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:59,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:59,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:59,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:10:59,083 INFO L87 Difference]: Start difference. First operand 10563 states and 15197 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:11:01,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:11:01,170 INFO L93 Difference]: Finished difference Result 30963 states and 44831 transitions. [2023-11-06 23:11:01,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:11:01,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 111 [2023-11-06 23:11:01,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:11:01,220 INFO L225 Difference]: With dead ends: 30963 [2023-11-06 23:11:01,220 INFO L226 Difference]: Without dead ends: 12412 [2023-11-06 23:11:01,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:01,272 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 156 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:11:01,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 529 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:11:01,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12412 states. [2023-11-06 23:11:03,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12412 to 12412. [2023-11-06 23:11:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12412 states, 10482 states have (on average 1.4158557527189468) internal successors, (14841), 10649 states have internal predecessors, (14841), 1109 states have call successors, (1109), 708 states have call predecessors, (1109), 820 states have return successors, (1870), 1070 states have call predecessors, (1870), 1109 states have call successors, (1870) [2023-11-06 23:11:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12412 states to 12412 states and 17820 transitions. [2023-11-06 23:11:03,087 INFO L78 Accepts]: Start accepts. Automaton has 12412 states and 17820 transitions. Word has length 111 [2023-11-06 23:11:03,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:11:03,087 INFO L495 AbstractCegarLoop]: Abstraction has 12412 states and 17820 transitions. [2023-11-06 23:11:03,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:11:03,088 INFO L276 IsEmpty]: Start isEmpty. Operand 12412 states and 17820 transitions. [2023-11-06 23:11:03,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-06 23:11:03,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:11:03,117 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:03,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-06 23:11:03,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 23:11:03,322 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:11:03,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1303231993, now seen corresponding path program 1 times [2023-11-06 23:11:03,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:03,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616563217] [2023-11-06 23:11:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:03,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:03,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:11:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:11:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:03,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:11:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:03,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:11:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:03,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:11:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:03,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 23:11:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:03,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:03,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-06 23:11:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:03,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:03,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-06 23:11:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-06 23:11:03,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:03,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616563217] [2023-11-06 23:11:03,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616563217] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:11:03,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275813990] [2023-11-06 23:11:03,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:03,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:03,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:03,494 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:11:03,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:11:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:03,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:11:03,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 23:11:03,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:11:03,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275813990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:03,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:11:03,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-06 23:11:03,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820037753] [2023-11-06 23:11:03,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:03,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:11:03,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:03,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:11:03,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:03,786 INFO L87 Difference]: Start difference. First operand 12412 states and 17820 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-06 23:11:05,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:11:05,632 INFO L93 Difference]: Finished difference Result 25566 states and 36960 transitions. [2023-11-06 23:11:05,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:11:05,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 144 [2023-11-06 23:11:05,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:11:05,697 INFO L225 Difference]: With dead ends: 25566 [2023-11-06 23:11:05,697 INFO L226 Difference]: Without dead ends: 18008 [2023-11-06 23:11:05,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:05,718 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 100 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:11:05,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 351 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:11:05,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18008 states. [2023-11-06 23:11:07,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18008 to 17830. [2023-11-06 23:11:07,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17830 states, 15065 states have (on average 1.4146033853302356) internal successors, (21311), 15298 states have internal predecessors, (21311), 1585 states have call successors, (1585), 1019 states have call predecessors, (1585), 1179 states have return successors, (2605), 1528 states have call predecessors, (2605), 1585 states have call successors, (2605) [2023-11-06 23:11:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17830 states to 17830 states and 25501 transitions. [2023-11-06 23:11:07,777 INFO L78 Accepts]: Start accepts. Automaton has 17830 states and 25501 transitions. Word has length 144 [2023-11-06 23:11:07,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:11:07,777 INFO L495 AbstractCegarLoop]: Abstraction has 17830 states and 25501 transitions. [2023-11-06 23:11:07,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-06 23:11:07,778 INFO L276 IsEmpty]: Start isEmpty. Operand 17830 states and 25501 transitions. [2023-11-06 23:11:07,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-06 23:11:07,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:11:07,808 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:07,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:11:08,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:08,014 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:11:08,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:08,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1403525863, now seen corresponding path program 1 times [2023-11-06 23:11:08,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:08,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371935706] [2023-11-06 23:11:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:08,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:08,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:11:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:08,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:11:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:08,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:11:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:08,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:11:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:08,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:11:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:08,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 23:11:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:08,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 23:11:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:08,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:08,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-06 23:11:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:08,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:08,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-06 23:11:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-06 23:11:08,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:08,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371935706] [2023-11-06 23:11:08,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371935706] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:11:08,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046221592] [2023-11-06 23:11:08,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:08,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:08,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:08,177 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:11:08,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:11:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:08,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:11:08,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-06 23:11:08,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:11:08,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046221592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:08,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:11:08,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-06 23:11:08,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269971616] [2023-11-06 23:11:08,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:08,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:11:08,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:08,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:11:08,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:08,418 INFO L87 Difference]: Start difference. First operand 17830 states and 25501 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 23:11:10,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:11:10,960 INFO L93 Difference]: Finished difference Result 29925 states and 43240 transitions. [2023-11-06 23:11:10,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:11:10,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 162 [2023-11-06 23:11:10,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:11:11,032 INFO L225 Difference]: With dead ends: 29925 [2023-11-06 23:11:11,032 INFO L226 Difference]: Without dead ends: 15948 [2023-11-06 23:11:11,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:11,071 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 136 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:11:11,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 219 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:11:11,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15948 states. [2023-11-06 23:11:12,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15948 to 11662. [2023-11-06 23:11:12,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11662 states, 9889 states have (on average 1.3571645262412781) internal successors, (13421), 10024 states have internal predecessors, (13421), 999 states have call successors, (999), 673 states have call predecessors, (999), 773 states have return successors, (1469), 972 states have call predecessors, (1469), 999 states have call successors, (1469) [2023-11-06 23:11:12,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11662 states to 11662 states and 15889 transitions. [2023-11-06 23:11:12,999 INFO L78 Accepts]: Start accepts. Automaton has 11662 states and 15889 transitions. Word has length 162 [2023-11-06 23:11:13,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:11:13,000 INFO L495 AbstractCegarLoop]: Abstraction has 11662 states and 15889 transitions. [2023-11-06 23:11:13,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 23:11:13,000 INFO L276 IsEmpty]: Start isEmpty. Operand 11662 states and 15889 transitions. [2023-11-06 23:11:13,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-06 23:11:13,013 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:11:13,014 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:13,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:11:13,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:13,224 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:11:13,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1446411639, now seen corresponding path program 1 times [2023-11-06 23:11:13,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:13,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644607282] [2023-11-06 23:11:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:13,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:13,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:11:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:13,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:11:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:13,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:11:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:13,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:11:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:13,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:11:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:13,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 23:11:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:13,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 23:11:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:13,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:13,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-06 23:11:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:13,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:13,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-06 23:11:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-06 23:11:13,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:13,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644607282] [2023-11-06 23:11:13,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644607282] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:11:13,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194519260] [2023-11-06 23:11:13,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:13,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:13,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:13,393 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:11:13,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:11:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:13,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:11:13,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-06 23:11:13,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:11:13,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194519260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:13,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:11:13,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-06 23:11:13,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841153042] [2023-11-06 23:11:13,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:13,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:11:13,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:11:13,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:13,562 INFO L87 Difference]: Start difference. First operand 11662 states and 15889 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:11:15,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:11:15,434 INFO L93 Difference]: Finished difference Result 24723 states and 33503 transitions. [2023-11-06 23:11:15,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:11:15,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 162 [2023-11-06 23:11:15,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:11:15,474 INFO L225 Difference]: With dead ends: 24723 [2023-11-06 23:11:15,474 INFO L226 Difference]: Without dead ends: 13074 [2023-11-06 23:11:15,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:15,499 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 162 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:11:15,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 356 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:11:15,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13074 states. [2023-11-06 23:11:17,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13074 to 12737. [2023-11-06 23:11:17,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12737 states, 10896 states have (on average 1.315712187958884) internal successors, (14336), 11021 states have internal predecessors, (14336), 1000 states have call successors, (1000), 740 states have call predecessors, (1000), 840 states have return successors, (1472), 983 states have call predecessors, (1472), 1000 states have call successors, (1472) [2023-11-06 23:11:17,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12737 states to 12737 states and 16808 transitions. [2023-11-06 23:11:17,419 INFO L78 Accepts]: Start accepts. Automaton has 12737 states and 16808 transitions. Word has length 162 [2023-11-06 23:11:17,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:11:17,420 INFO L495 AbstractCegarLoop]: Abstraction has 12737 states and 16808 transitions. [2023-11-06 23:11:17,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:11:17,420 INFO L276 IsEmpty]: Start isEmpty. Operand 12737 states and 16808 transitions. [2023-11-06 23:11:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-06 23:11:17,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:11:17,433 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:17,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:11:17,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:17,639 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:11:17,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:17,639 INFO L85 PathProgramCache]: Analyzing trace with hash -651398561, now seen corresponding path program 1 times [2023-11-06 23:11:17,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:17,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089243906] [2023-11-06 23:11:17,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:17,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:17,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:11:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:17,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:11:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:17,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:11:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:17,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:11:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:17,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:11:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:17,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 23:11:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:17,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:17,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-06 23:11:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:17,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-06 23:11:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:17,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:17,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-06 23:11:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-06 23:11:17,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:17,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089243906] [2023-11-06 23:11:17,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089243906] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:11:17,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573834126] [2023-11-06 23:11:17,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:17,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:17,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:17,822 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:11:17,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 23:11:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:17,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:11:17,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 23:11:18,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:11:18,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573834126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:18,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:11:18,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-06 23:11:18,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583114133] [2023-11-06 23:11:18,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:18,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:11:18,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:18,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:11:18,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:18,014 INFO L87 Difference]: Start difference. First operand 12737 states and 16808 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 23:11:21,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:11:21,961 INFO L93 Difference]: Finished difference Result 37491 states and 49933 transitions. [2023-11-06 23:11:21,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:11:21,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 163 [2023-11-06 23:11:21,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:11:22,046 INFO L225 Difference]: With dead ends: 37491 [2023-11-06 23:11:22,047 INFO L226 Difference]: Without dead ends: 24767 [2023-11-06 23:11:22,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:22,072 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 144 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:11:22,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 517 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:11:22,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24767 states. [2023-11-06 23:11:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24767 to 24751. [2023-11-06 23:11:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24751 states, 21167 states have (on average 1.3067038314357253) internal successors, (27659), 21417 states have internal predecessors, (27659), 1935 states have call successors, (1935), 1448 states have call predecessors, (1935), 1648 states have return successors, (3350), 1901 states have call predecessors, (3350), 1935 states have call successors, (3350) [2023-11-06 23:11:25,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24751 states to 24751 states and 32944 transitions. [2023-11-06 23:11:25,447 INFO L78 Accepts]: Start accepts. Automaton has 24751 states and 32944 transitions. Word has length 163 [2023-11-06 23:11:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:11:25,448 INFO L495 AbstractCegarLoop]: Abstraction has 24751 states and 32944 transitions. [2023-11-06 23:11:25,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 23:11:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 24751 states and 32944 transitions. [2023-11-06 23:11:25,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-06 23:11:25,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:11:25,470 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:25,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:11:25,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-06 23:11:25,675 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:11:25,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:25,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1553591225, now seen corresponding path program 1 times [2023-11-06 23:11:25,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:25,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849440580] [2023-11-06 23:11:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:25,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:25,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:11:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:25,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:11:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:25,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:11:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:25,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:11:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:25,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:11:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:25,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 23:11:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:25,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:25,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-06 23:11:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:25,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-06 23:11:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:25,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:25,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-06 23:11:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-06 23:11:25,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:25,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849440580] [2023-11-06 23:11:25,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849440580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:11:25,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389512378] [2023-11-06 23:11:25,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:25,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:25,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:25,839 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:11:25,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 23:11:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:25,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:11:25,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:26,105 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 23:11:26,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:11:26,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389512378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:26,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:11:26,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-06 23:11:26,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397870877] [2023-11-06 23:11:26,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:26,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:11:26,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:26,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:11:26,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:26,108 INFO L87 Difference]: Start difference. First operand 24751 states and 32944 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 23:11:28,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:11:28,288 INFO L93 Difference]: Finished difference Result 38056 states and 50986 transitions. [2023-11-06 23:11:28,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:11:28,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 163 [2023-11-06 23:11:28,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:11:28,332 INFO L225 Difference]: With dead ends: 38056 [2023-11-06 23:11:28,332 INFO L226 Difference]: Without dead ends: 15790 [2023-11-06 23:11:28,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:28,372 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 112 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:11:28,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 211 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:11:28,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15790 states. [2023-11-06 23:11:30,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15790 to 14700. [2023-11-06 23:11:30,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14700 states, 12588 states have (on average 1.2675564029234192) internal successors, (15956), 12698 states have internal predecessors, (15956), 1147 states have call successors, (1147), 876 states have call predecessors, (1147), 964 states have return successors, (1653), 1133 states have call predecessors, (1653), 1147 states have call successors, (1653) [2023-11-06 23:11:30,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14700 states to 14700 states and 18756 transitions. [2023-11-06 23:11:30,641 INFO L78 Accepts]: Start accepts. Automaton has 14700 states and 18756 transitions. Word has length 163 [2023-11-06 23:11:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:11:30,641 INFO L495 AbstractCegarLoop]: Abstraction has 14700 states and 18756 transitions. [2023-11-06 23:11:30,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 23:11:30,641 INFO L276 IsEmpty]: Start isEmpty. Operand 14700 states and 18756 transitions. [2023-11-06 23:11:30,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-06 23:11:30,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:11:30,648 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:30,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 23:11:30,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-06 23:11:30,849 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:11:30,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:30,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1286031364, now seen corresponding path program 1 times [2023-11-06 23:11:30,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:30,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848907995] [2023-11-06 23:11:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:30,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:30,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:11:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:30,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:11:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:30,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:11:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:30,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:11:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:30,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:11:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:30,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 23:11:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:30,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 23:11:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:30,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:30,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 23:11:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:30,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:30,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-06 23:11:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-06 23:11:31,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:31,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848907995] [2023-11-06 23:11:31,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848907995] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:11:31,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281377609] [2023-11-06 23:11:31,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:31,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:31,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:31,002 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:11:31,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 23:11:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:31,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:11:31,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-06 23:11:31,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:11:31,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281377609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:31,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:11:31,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-06 23:11:31,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853705834] [2023-11-06 23:11:31,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:31,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:11:31,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:31,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:11:31,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:31,207 INFO L87 Difference]: Start difference. First operand 14700 states and 18756 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-06 23:11:35,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:11:35,168 INFO L93 Difference]: Finished difference Result 42725 states and 55186 transitions. [2023-11-06 23:11:35,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:11:35,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 164 [2023-11-06 23:11:35,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:11:35,250 INFO L225 Difference]: With dead ends: 42725 [2023-11-06 23:11:35,250 INFO L226 Difference]: Without dead ends: 28042 [2023-11-06 23:11:35,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:35,276 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 138 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:11:35,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 372 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:11:35,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28042 states. [2023-11-06 23:11:39,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28042 to 27294. [2023-11-06 23:11:39,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27294 states, 23284 states have (on average 1.2578594743171276) internal successors, (29288), 23498 states have internal predecessors, (29288), 2193 states have call successors, (2193), 1652 states have call predecessors, (2193), 1816 states have return successors, (3793), 2159 states have call predecessors, (3793), 2193 states have call successors, (3793) [2023-11-06 23:11:39,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27294 states to 27294 states and 35274 transitions. [2023-11-06 23:11:39,131 INFO L78 Accepts]: Start accepts. Automaton has 27294 states and 35274 transitions. Word has length 164 [2023-11-06 23:11:39,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:11:39,132 INFO L495 AbstractCegarLoop]: Abstraction has 27294 states and 35274 transitions. [2023-11-06 23:11:39,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-06 23:11:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand 27294 states and 35274 transitions. [2023-11-06 23:11:39,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-06 23:11:39,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:11:39,156 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:39,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 23:11:39,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 23:11:39,361 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:11:39,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:39,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1082705722, now seen corresponding path program 1 times [2023-11-06 23:11:39,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:39,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352117525] [2023-11-06 23:11:39,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:39,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:39,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:11:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:39,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:11:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:39,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:11:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:39,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:11:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:39,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:11:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:39,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 23:11:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:39,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 23:11:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:39,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 23:11:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:39,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:39,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-06 23:11:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:39,465 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-06 23:11:39,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:39,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352117525] [2023-11-06 23:11:39,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352117525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:39,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:11:39,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:11:39,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67906493] [2023-11-06 23:11:39,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:39,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:11:39,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:39,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:11:39,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:11:39,468 INFO L87 Difference]: Start difference. First operand 27294 states and 35274 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:11:43,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:11:43,275 INFO L93 Difference]: Finished difference Result 52165 states and 67160 transitions. [2023-11-06 23:11:43,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:11:43,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 164 [2023-11-06 23:11:43,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:11:43,336 INFO L225 Difference]: With dead ends: 52165 [2023-11-06 23:11:43,336 INFO L226 Difference]: Without dead ends: 24886 [2023-11-06 23:11:43,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:43,375 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 315 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:11:43,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 257 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 23:11:43,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24886 states. [2023-11-06 23:11:46,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24886 to 22452. [2023-11-06 23:11:46,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22452 states, 19148 states have (on average 1.2579903906413203) internal successors, (24088), 19523 states have internal predecessors, (24088), 1627 states have call successors, (1627), 1232 states have call predecessors, (1627), 1676 states have return successors, (3101), 1704 states have call predecessors, (3101), 1627 states have call successors, (3101) [2023-11-06 23:11:46,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22452 states to 22452 states and 28816 transitions. [2023-11-06 23:11:46,931 INFO L78 Accepts]: Start accepts. Automaton has 22452 states and 28816 transitions. Word has length 164 [2023-11-06 23:11:46,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:11:46,932 INFO L495 AbstractCegarLoop]: Abstraction has 22452 states and 28816 transitions. [2023-11-06 23:11:46,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:11:46,932 INFO L276 IsEmpty]: Start isEmpty. Operand 22452 states and 28816 transitions. [2023-11-06 23:11:46,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-06 23:11:46,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:11:46,949 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:46,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 23:11:46,949 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:11:46,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:46,950 INFO L85 PathProgramCache]: Analyzing trace with hash 848963300, now seen corresponding path program 1 times [2023-11-06 23:11:46,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:46,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032425622] [2023-11-06 23:11:46,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:46,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:47,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:11:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:47,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:11:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:47,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:11:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:47,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:11:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:47,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:11:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:47,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 23:11:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:47,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 23:11:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:47,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-06 23:11:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:47,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:47,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-06 23:11:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-06 23:11:47,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:47,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032425622] [2023-11-06 23:11:47,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032425622] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:11:47,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313979777] [2023-11-06 23:11:47,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:47,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:47,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:47,105 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:11:47,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 23:11:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:47,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:11:47,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 23:11:47,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:11:47,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313979777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:47,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:11:47,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-06 23:11:47,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403044033] [2023-11-06 23:11:47,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:47,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:11:47,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:47,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:11:47,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:47,302 INFO L87 Difference]: Start difference. First operand 22452 states and 28816 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 23:11:50,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:11:50,497 INFO L93 Difference]: Finished difference Result 38067 states and 50393 transitions. [2023-11-06 23:11:50,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:11:50,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 168 [2023-11-06 23:11:50,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:11:50,545 INFO L225 Difference]: With dead ends: 38067 [2023-11-06 23:11:50,546 INFO L226 Difference]: Without dead ends: 22484 [2023-11-06 23:11:50,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:11:50,573 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 128 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:11:50,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 453 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:11:50,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22484 states. [2023-11-06 23:11:54,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22484 to 22428. [2023-11-06 23:11:54,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22428 states, 19124 states have (on average 1.2324304538799415) internal successors, (23569), 19499 states have internal predecessors, (23569), 1627 states have call successors, (1627), 1232 states have call predecessors, (1627), 1676 states have return successors, (3101), 1704 states have call predecessors, (3101), 1627 states have call successors, (3101) [2023-11-06 23:11:54,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22428 states to 22428 states and 28297 transitions. [2023-11-06 23:11:54,390 INFO L78 Accepts]: Start accepts. Automaton has 22428 states and 28297 transitions. Word has length 168 [2023-11-06 23:11:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:11:54,390 INFO L495 AbstractCegarLoop]: Abstraction has 22428 states and 28297 transitions. [2023-11-06 23:11:54,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-06 23:11:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 22428 states and 28297 transitions. [2023-11-06 23:11:54,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-06 23:11:54,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:11:54,403 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:54,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 23:11:54,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 23:11:54,608 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:11:54,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:54,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2083009746, now seen corresponding path program 1 times [2023-11-06 23:11:54,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:11:54,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821021846] [2023-11-06 23:11:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:54,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:11:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:54,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:11:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:54,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:11:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:54,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:11:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:54,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:11:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:54,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:11:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:54,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 23:11:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:54,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 23:11:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:54,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:54,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-06 23:11:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:54,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:11:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:54,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-06 23:11:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-06 23:11:54,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:11:54,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821021846] [2023-11-06 23:11:54,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821021846] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:11:54,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528521286] [2023-11-06 23:11:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:54,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:11:54,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:11:54,762 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:11:54,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 23:11:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:54,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:11:54,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-06 23:11:55,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:11:55,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528521286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:55,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:11:55,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-06 23:11:55,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799776731] [2023-11-06 23:11:55,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:55,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:11:55,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:11:55,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:11:55,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:11:55,035 INFO L87 Difference]: Start difference. First operand 22428 states and 28297 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:11:58,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:11:58,673 INFO L93 Difference]: Finished difference Result 44771 states and 56981 transitions. [2023-11-06 23:11:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:11:58,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 170 [2023-11-06 23:11:58,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:11:58,729 INFO L225 Difference]: With dead ends: 44771 [2023-11-06 23:11:58,729 INFO L226 Difference]: Without dead ends: 22356 [2023-11-06 23:11:58,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:11:58,759 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 183 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:11:58,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 299 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:11:58,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22356 states. [2023-11-06 23:12:02,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22356 to 22356. [2023-11-06 23:12:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22356 states, 19052 states have (on average 1.2031807684232627) internal successors, (22923), 19427 states have internal predecessors, (22923), 1627 states have call successors, (1627), 1232 states have call predecessors, (1627), 1676 states have return successors, (3101), 1704 states have call predecessors, (3101), 1627 states have call successors, (3101) [2023-11-06 23:12:02,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22356 states to 22356 states and 27651 transitions. [2023-11-06 23:12:02,601 INFO L78 Accepts]: Start accepts. Automaton has 22356 states and 27651 transitions. Word has length 170 [2023-11-06 23:12:02,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:12:02,601 INFO L495 AbstractCegarLoop]: Abstraction has 22356 states and 27651 transitions. [2023-11-06 23:12:02,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:12:02,602 INFO L276 IsEmpty]: Start isEmpty. Operand 22356 states and 27651 transitions. [2023-11-06 23:12:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-06 23:12:02,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:12:02,620 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:12:02,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 23:12:02,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-06 23:12:02,826 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:12:02,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:02,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1376413140, now seen corresponding path program 1 times [2023-11-06 23:12:02,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:02,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30751923] [2023-11-06 23:12:02,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:02,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:02,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:12:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:12:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:02,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:12:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:02,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:12:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:02,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:12:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:02,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 23:12:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 23:12:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:02,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:12:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:02,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-06 23:12:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:02,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:12:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:02,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-06 23:12:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-06 23:12:02,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:02,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30751923] [2023-11-06 23:12:02,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30751923] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:12:02,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130894227] [2023-11-06 23:12:02,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:02,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:02,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:12:02,977 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:12:03,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 23:12:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:03,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:12:03,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-06 23:12:03,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:12:03,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130894227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:03,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:12:03,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-06 23:12:03,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451430322] [2023-11-06 23:12:03,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:03,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:12:03,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:03,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:12:03,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:12:03,227 INFO L87 Difference]: Start difference. First operand 22356 states and 27651 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:12:06,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:12:06,901 INFO L93 Difference]: Finished difference Result 41809 states and 52965 transitions. [2023-11-06 23:12:06,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:12:06,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 170 [2023-11-06 23:12:06,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:12:06,942 INFO L225 Difference]: With dead ends: 41809 [2023-11-06 23:12:06,942 INFO L226 Difference]: Without dead ends: 20562 [2023-11-06 23:12:06,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:12:06,965 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 211 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:12:06,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 293 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 23:12:06,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20562 states. [2023-11-06 23:12:10,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20562 to 18265. [2023-11-06 23:12:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18265 states, 15590 states have (on average 1.1698524695317511) internal successors, (18238), 15891 states have internal predecessors, (18238), 1311 states have call successors, (1311), 1000 states have call predecessors, (1311), 1363 states have return successors, (2421), 1377 states have call predecessors, (2421), 1311 states have call successors, (2421) [2023-11-06 23:12:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18265 states to 18265 states and 21970 transitions. [2023-11-06 23:12:10,418 INFO L78 Accepts]: Start accepts. Automaton has 18265 states and 21970 transitions. Word has length 170 [2023-11-06 23:12:10,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:12:10,418 INFO L495 AbstractCegarLoop]: Abstraction has 18265 states and 21970 transitions. [2023-11-06 23:12:10,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:12:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 18265 states and 21970 transitions. [2023-11-06 23:12:10,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-06 23:12:10,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:12:10,428 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:12:10,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 23:12:10,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-06 23:12:10,628 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:12:10,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:10,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2056720554, now seen corresponding path program 1 times [2023-11-06 23:12:10,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:12:10,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474581545] [2023-11-06 23:12:10,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:10,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:12:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:10,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 23:12:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:10,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:12:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:10,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 23:12:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:10,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 23:12:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:10,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:12:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:10,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 23:12:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:10,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 23:12:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:10,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:12:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:10,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-06 23:12:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 23:12:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:10,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-06 23:12:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-06 23:12:10,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:12:10,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474581545] [2023-11-06 23:12:10,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474581545] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:12:10,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215346332] [2023-11-06 23:12:10,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:10,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:12:10,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:12:10,768 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:12:10,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff68cc0-324a-4a49-b73a-916ed9c9dd01/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 23:12:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:11,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:12:11,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-06 23:12:11,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:12:11,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215346332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:11,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:12:11,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-06 23:12:11,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349735432] [2023-11-06 23:12:11,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:11,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:12:11,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:12:11,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:12:11,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:12:11,123 INFO L87 Difference]: Start difference. First operand 18265 states and 21970 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:12:13,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:12:13,766 INFO L93 Difference]: Finished difference Result 27367 states and 33219 transitions. [2023-11-06 23:12:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:12:13,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 170 [2023-11-06 23:12:13,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:12:13,797 INFO L225 Difference]: With dead ends: 27367 [2023-11-06 23:12:13,797 INFO L226 Difference]: Without dead ends: 14493 [2023-11-06 23:12:13,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:12:13,811 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 174 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:12:13,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 285 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:12:13,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14493 states.