./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cfaa727818e9d1eb335a3637dac175808db4c2bbb7c5a7c3c9835dd5611700d7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:03:49,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:03:49,118 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 22:03:49,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:03:49,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:03:49,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:03:49,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:03:49,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:03:49,154 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:03:49,155 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:03:49,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:03:49,156 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:03:49,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:03:49,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:03:49,158 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:03:49,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:03:49,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:03:49,160 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:03:49,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:03:49,161 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:03:49,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:03:49,162 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:03:49,163 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:03:49,163 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:03:49,163 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:03:49,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:03:49,164 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:03:49,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:03:49,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:03:49,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:03:49,166 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:03:49,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:03:49,166 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:03:49,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:03:49,167 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:03:49,167 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:03:49,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:03:49,167 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:03:49,167 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:03:49,168 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:03:49,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:03:49,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:03:49,168 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_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfaa727818e9d1eb335a3637dac175808db4c2bbb7c5a7c3c9835dd5611700d7 [2023-11-24 22:03:49,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:03:49,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:03:49,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:03:49,547 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:03:49,547 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:03:49,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c [2023-11-24 22:03:52,774 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:03:53,626 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:03:53,627 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c [2023-11-24 22:03:53,676 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/data/5bb5fd164/f899e015dd724042a69d9e397fff10b4/FLAGcc8d064da [2023-11-24 22:03:53,697 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/data/5bb5fd164/f899e015dd724042a69d9e397fff10b4 [2023-11-24 22:03:53,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:03:53,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:03:53,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:03:53,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:03:53,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:03:53,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:03:53" (1/1) ... [2023-11-24 22:03:53,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77fa965e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:53, skipping insertion in model container [2023-11-24 22:03:53,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:03:53" (1/1) ... [2023-11-24 22:03:53,953 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:03:56,361 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_931f26b9-c93b-4599-a360-ae244d2c9e78/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[378560,378573] [2023-11-24 22:03:56,408 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_931f26b9-c93b-4599-a360-ae244d2c9e78/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[383339,383352] [2023-11-24 22:03:56,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:03:56,669 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:03:57,903 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_931f26b9-c93b-4599-a360-ae244d2c9e78/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[378560,378573] [2023-11-24 22:03:57,967 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_931f26b9-c93b-4599-a360-ae244d2c9e78/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[383339,383352] [2023-11-24 22:03:57,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:03:58,059 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:03:58,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58 WrapperNode [2023-11-24 22:03:58,059 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:03:58,061 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:03:58,061 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:03:58,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:03:58,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,575 INFO L138 Inliner]: procedures = 46, calls = 45, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 12574 [2023-11-24 22:03:58,576 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:03:58,576 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:03:58,577 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:03:58,577 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:03:58,590 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,666 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,850 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-24 22:03:58,851 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:58,851 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:59,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:59,175 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:59,228 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:59,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:59,311 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:03:59,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:03:59,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:03:59,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:03:59,314 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (1/1) ... [2023-11-24 22:03:59,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:03:59,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:03:59,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:03:59,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:03:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:03:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-24 22:03:59,452 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-24 22:03:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-24 22:03:59,453 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-24 22:03:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-24 22:03:59,453 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-24 22:03:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-24 22:03:59,454 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-24 22:03:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-24 22:03:59,454 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-24 22:03:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-24 22:03:59,455 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-24 22:03:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:03:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-24 22:03:59,455 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-24 22:03:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:03:59,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:03:59,569 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:03:59,572 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:04:09,590 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:04:09,714 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:04:09,714 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-24 22:04:09,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:04:09 BoogieIcfgContainer [2023-11-24 22:04:09,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:04:09,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:04:09,720 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:04:09,723 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:04:09,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:03:53" (1/3) ... [2023-11-24 22:04:09,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1a790c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:04:09, skipping insertion in model container [2023-11-24 22:04:09,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:58" (2/3) ... [2023-11-24 22:04:09,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1a790c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:04:09, skipping insertion in model container [2023-11-24 22:04:09,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:04:09" (3/3) ... [2023-11-24 22:04:09,727 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.01.cil-2.c [2023-11-24 22:04:09,747 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:04:09,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 22:04:09,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:04:09,879 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10bb9f34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:04:09,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 22:04:09,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 2226 states, 2199 states have (on average 1.8872214643019554) internal successors, (4150), 2204 states have internal predecessors, (4150), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-24 22:04:09,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-24 22:04:09,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:09,909 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] [2023-11-24 22:04:09,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:09,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:09,918 INFO L85 PathProgramCache]: Analyzing trace with hash 767256328, now seen corresponding path program 1 times [2023-11-24 22:04:09,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:09,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783750341] [2023-11-24 22:04:09,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:09,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:10,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:10,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783750341] [2023-11-24 22:04:10,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783750341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:10,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:10,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 22:04:10,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493121789] [2023-11-24 22:04:10,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:10,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:04:10,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:10,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:04:10,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:04:10,604 INFO L87 Difference]: Start difference. First operand has 2226 states, 2199 states have (on average 1.8872214643019554) internal successors, (4150), 2204 states have internal predecessors, (4150), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 22:04:11,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:11,686 INFO L93 Difference]: Finished difference Result 4576 states and 8569 transitions. [2023-11-24 22:04:11,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:04:11,689 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2023-11-24 22:04:11,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:11,729 INFO L225 Difference]: With dead ends: 4576 [2023-11-24 22:04:11,730 INFO L226 Difference]: Without dead ends: 2351 [2023-11-24 22:04:11,743 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 [2023-11-24 22:04:11,749 INFO L413 NwaCegarLoop]: 4051 mSDtfsCounter, 4257 mSDsluCounter, 12127 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4265 SdHoareTripleChecker+Valid, 16178 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:11,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4265 Valid, 16178 Invalid, 531 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 22:04:11,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2023-11-24 22:04:11,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 2310. [2023-11-24 22:04:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2310 states, 2268 states have (on average 1.843915343915344) internal successors, (4182), 2272 states have internal predecessors, (4182), 27 states have call successors, (27), 13 states have call predecessors, (27), 13 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2023-11-24 22:04:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 4237 transitions. [2023-11-24 22:04:11,915 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 4237 transitions. Word has length 52 [2023-11-24 22:04:11,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:11,916 INFO L495 AbstractCegarLoop]: Abstraction has 2310 states and 4237 transitions. [2023-11-24 22:04:11,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 22:04:11,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 4237 transitions. [2023-11-24 22:04:11,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-24 22:04:11,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:11,928 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] [2023-11-24 22:04:11,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:04:11,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:11,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:11,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1234257540, now seen corresponding path program 1 times [2023-11-24 22:04:11,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:11,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366113916] [2023-11-24 22:04:11,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:11,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:12,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:12,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:12,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:12,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:12,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:12,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:12,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366113916] [2023-11-24 22:04:12,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366113916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:12,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:12,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:04:12,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368059541] [2023-11-24 22:04:12,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:12,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 22:04:12,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:12,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 22:04:12,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:12,187 INFO L87 Difference]: Start difference. First operand 2310 states and 4237 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 22:04:13,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:13,475 INFO L93 Difference]: Finished difference Result 2639 states and 4723 transitions. [2023-11-24 22:04:13,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 22:04:13,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2023-11-24 22:04:13,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:13,495 INFO L225 Difference]: With dead ends: 2639 [2023-11-24 22:04:13,496 INFO L226 Difference]: Without dead ends: 2457 [2023-11-24 22:04:13,498 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 [2023-11-24 22:04:13,500 INFO L413 NwaCegarLoop]: 4113 mSDtfsCounter, 4241 mSDsluCounter, 16292 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4249 SdHoareTripleChecker+Valid, 20405 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:13,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4249 Valid, 20405 Invalid, 800 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 22:04:13,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2023-11-24 22:04:13,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2394. [2023-11-24 22:04:13,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2394 states, 2335 states have (on average 1.833404710920771) internal successors, (4281), 2340 states have internal predecessors, (4281), 37 states have call successors, (37), 19 states have call predecessors, (37), 20 states have return successors, (40), 36 states have call predecessors, (40), 35 states have call successors, (40) [2023-11-24 22:04:13,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2394 states to 2394 states and 4358 transitions. [2023-11-24 22:04:13,595 INFO L78 Accepts]: Start accepts. Automaton has 2394 states and 4358 transitions. Word has length 52 [2023-11-24 22:04:13,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:13,595 INFO L495 AbstractCegarLoop]: Abstraction has 2394 states and 4358 transitions. [2023-11-24 22:04:13,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 22:04:13,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2394 states and 4358 transitions. [2023-11-24 22:04:13,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-24 22:04:13,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:13,598 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] [2023-11-24 22:04:13,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:04:13,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:13,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:13,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1657904262, now seen corresponding path program 1 times [2023-11-24 22:04:13,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:13,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770086094] [2023-11-24 22:04:13,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:13,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:13,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:13,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:13,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:13,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:13,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770086094] [2023-11-24 22:04:13,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770086094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:13,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:13,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:04:13,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639111325] [2023-11-24 22:04:13,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:13,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 22:04:13,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:13,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 22:04:13,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:13,751 INFO L87 Difference]: Start difference. First operand 2394 states and 4358 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 22:04:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:14,897 INFO L93 Difference]: Finished difference Result 2964 states and 5194 transitions. [2023-11-24 22:04:14,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:04:14,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2023-11-24 22:04:14,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:14,917 INFO L225 Difference]: With dead ends: 2964 [2023-11-24 22:04:14,917 INFO L226 Difference]: Without dead ends: 2698 [2023-11-24 22:04:14,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-24 22:04:14,921 INFO L413 NwaCegarLoop]: 4109 mSDtfsCounter, 4288 mSDsluCounter, 16287 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4298 SdHoareTripleChecker+Valid, 20396 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:14,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4298 Valid, 20396 Invalid, 791 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 22:04:14,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2023-11-24 22:04:15,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2559. [2023-11-24 22:04:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2559 states, 2468 states have (on average 1.8144246353322528) internal successors, (4478), 2475 states have internal predecessors, (4478), 55 states have call successors, (55), 31 states have call predecessors, (55), 34 states have return successors, (66), 56 states have call predecessors, (66), 53 states have call successors, (66) [2023-11-24 22:04:15,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 4599 transitions. [2023-11-24 22:04:15,029 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 4599 transitions. Word has length 52 [2023-11-24 22:04:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:15,030 INFO L495 AbstractCegarLoop]: Abstraction has 2559 states and 4599 transitions. [2023-11-24 22:04:15,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 22:04:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 4599 transitions. [2023-11-24 22:04:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-24 22:04:15,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:15,033 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] [2023-11-24 22:04:15,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:04:15,034 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:15,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:15,034 INFO L85 PathProgramCache]: Analyzing trace with hash 286096964, now seen corresponding path program 1 times [2023-11-24 22:04:15,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:15,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221639904] [2023-11-24 22:04:15,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:15,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:15,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:15,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:15,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:15,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:15,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221639904] [2023-11-24 22:04:15,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221639904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:15,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:15,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:04:15,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648036167] [2023-11-24 22:04:15,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:15,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 22:04:15,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:15,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 22:04:15,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:15,177 INFO L87 Difference]: Start difference. First operand 2559 states and 4599 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 22:04:16,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:16,396 INFO L93 Difference]: Finished difference Result 3480 states and 5949 transitions. [2023-11-24 22:04:16,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:04:16,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2023-11-24 22:04:16,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:16,418 INFO L225 Difference]: With dead ends: 3480 [2023-11-24 22:04:16,418 INFO L226 Difference]: Without dead ends: 3049 [2023-11-24 22:04:16,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-24 22:04:16,431 INFO L413 NwaCegarLoop]: 4098 mSDtfsCounter, 4235 mSDsluCounter, 16272 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4242 SdHoareTripleChecker+Valid, 20370 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:16,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4242 Valid, 20370 Invalid, 817 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [53 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 22:04:16,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2023-11-24 22:04:16,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 2840. [2023-11-24 22:04:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2840 states, 2691 states have (on average 1.7822370865849126) internal successors, (4796), 2702 states have internal predecessors, (4796), 87 states have call successors, (87), 53 states have call predecessors, (87), 60 states have return successors, (120), 92 states have call predecessors, (120), 85 states have call successors, (120) [2023-11-24 22:04:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 5003 transitions. [2023-11-24 22:04:16,570 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 5003 transitions. Word has length 52 [2023-11-24 22:04:16,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:16,572 INFO L495 AbstractCegarLoop]: Abstraction has 2840 states and 5003 transitions. [2023-11-24 22:04:16,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 22:04:16,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 5003 transitions. [2023-11-24 22:04:16,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-24 22:04:16,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:16,577 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] [2023-11-24 22:04:16,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:04:16,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:16,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:16,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1559270202, now seen corresponding path program 1 times [2023-11-24 22:04:16,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:16,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912422617] [2023-11-24 22:04:16,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:16,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:16,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:16,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:16,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:16,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:16,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:16,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:16,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:16,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912422617] [2023-11-24 22:04:16,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912422617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:16,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:16,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 22:04:16,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924124582] [2023-11-24 22:04:16,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:16,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:04:16,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:16,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:04:16,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:04:16,730 INFO L87 Difference]: Start difference. First operand 2840 states and 5003 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 22:04:17,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:17,544 INFO L93 Difference]: Finished difference Result 4114 states and 6859 transitions. [2023-11-24 22:04:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:04:17,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2023-11-24 22:04:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:17,566 INFO L225 Difference]: With dead ends: 4114 [2023-11-24 22:04:17,567 INFO L226 Difference]: Without dead ends: 3403 [2023-11-24 22:04:17,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-24 22:04:17,572 INFO L413 NwaCegarLoop]: 4117 mSDtfsCounter, 4346 mSDsluCounter, 12122 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4369 SdHoareTripleChecker+Valid, 16239 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:17,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4369 Valid, 16239 Invalid, 650 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 22:04:17,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2023-11-24 22:04:17,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 3212. [2023-11-24 22:04:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3212 states, 2980 states have (on average 1.7426174496644296) internal successors, (5193), 3000 states have internal predecessors, (5193), 136 states have call successors, (136), 83 states have call predecessors, (136), 94 states have return successors, (179), 136 states have call predecessors, (179), 134 states have call successors, (179) [2023-11-24 22:04:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3212 states to 3212 states and 5508 transitions. [2023-11-24 22:04:17,717 INFO L78 Accepts]: Start accepts. Automaton has 3212 states and 5508 transitions. Word has length 52 [2023-11-24 22:04:17,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:17,718 INFO L495 AbstractCegarLoop]: Abstraction has 3212 states and 5508 transitions. [2023-11-24 22:04:17,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 22:04:17,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3212 states and 5508 transitions. [2023-11-24 22:04:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-24 22:04:17,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:17,723 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:17,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:04:17,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:17,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:17,724 INFO L85 PathProgramCache]: Analyzing trace with hash 285699760, now seen corresponding path program 1 times [2023-11-24 22:04:17,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:17,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749937011] [2023-11-24 22:04:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:17,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:17,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:17,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:17,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:17,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:17,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:17,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-24 22:04:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:17,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:17,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-24 22:04:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 22:04:17,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:17,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749937011] [2023-11-24 22:04:17,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749937011] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:04:17,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316821848] [2023-11-24 22:04:17,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:17,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:04:17,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:04:17,909 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:04:17,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 22:04:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:18,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 22:04:18,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 22:04:18,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:18,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316821848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:18,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 22:04:18,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-24 22:04:18,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621144112] [2023-11-24 22:04:18,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:18,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:18,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:18,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:18,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:18,073 INFO L87 Difference]: Start difference. First operand 3212 states and 5508 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 22:04:18,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:18,260 INFO L93 Difference]: Finished difference Result 5267 states and 8483 transitions. [2023-11-24 22:04:18,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:04:18,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2023-11-24 22:04:18,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:18,289 INFO L225 Difference]: With dead ends: 5267 [2023-11-24 22:04:18,289 INFO L226 Difference]: Without dead ends: 4185 [2023-11-24 22:04:18,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:18,295 INFO L413 NwaCegarLoop]: 4194 mSDtfsCounter, 107 mSDsluCounter, 4088 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 8282 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:18,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 8282 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 22:04:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2023-11-24 22:04:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 4185. [2023-11-24 22:04:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4185 states, 3744 states have (on average 1.670405982905983) internal successors, (6254), 3777 states have internal predecessors, (6254), 255 states have call successors, (255), 161 states have call predecessors, (255), 184 states have return successors, (376), 262 states have call predecessors, (376), 253 states have call successors, (376) [2023-11-24 22:04:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 6885 transitions. [2023-11-24 22:04:18,671 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 6885 transitions. Word has length 84 [2023-11-24 22:04:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:18,674 INFO L495 AbstractCegarLoop]: Abstraction has 4185 states and 6885 transitions. [2023-11-24 22:04:18,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 22:04:18,675 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 6885 transitions. [2023-11-24 22:04:18,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-24 22:04:18,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:18,687 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 22:04:18,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:18,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-24 22:04:18,902 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:18,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:18,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1204831734, now seen corresponding path program 1 times [2023-11-24 22:04:18,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:18,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795245149] [2023-11-24 22:04:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:18,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:18,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:19,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:19,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:19,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:19,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-24 22:04:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:19,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:19,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-24 22:04:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:19,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-24 22:04:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 22:04:19,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:19,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795245149] [2023-11-24 22:04:19,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795245149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:04:19,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141128344] [2023-11-24 22:04:19,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:19,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:04:19,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:04:19,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:04:19,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 22:04:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:19,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 22:04:19,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:19,345 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 22:04:19,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:19,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141128344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:19,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 22:04:19,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-24 22:04:19,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481255308] [2023-11-24 22:04:19,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:19,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:19,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:19,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:19,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:19,349 INFO L87 Difference]: Start difference. First operand 4185 states and 6885 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-24 22:04:19,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:19,690 INFO L93 Difference]: Finished difference Result 8169 states and 12572 transitions. [2023-11-24 22:04:19,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:04:19,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2023-11-24 22:04:19,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:19,734 INFO L225 Difference]: With dead ends: 8169 [2023-11-24 22:04:19,735 INFO L226 Difference]: Without dead ends: 6117 [2023-11-24 22:04:19,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:19,745 INFO L413 NwaCegarLoop]: 4111 mSDtfsCounter, 4036 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4036 SdHoareTripleChecker+Valid, 4229 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:19,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4036 Valid, 4229 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 22:04:19,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6117 states. [2023-11-24 22:04:20,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6117 to 6085. [2023-11-24 22:04:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6085 states, 5250 states have (on average 1.5895238095238096) internal successors, (8345), 5312 states have internal predecessors, (8345), 475 states have call successors, (475), 311 states have call predecessors, (475), 358 states have return successors, (688), 477 states have call predecessors, (688), 473 states have call successors, (688) [2023-11-24 22:04:20,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6085 states to 6085 states and 9508 transitions. [2023-11-24 22:04:20,164 INFO L78 Accepts]: Start accepts. Automaton has 6085 states and 9508 transitions. Word has length 107 [2023-11-24 22:04:20,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:20,166 INFO L495 AbstractCegarLoop]: Abstraction has 6085 states and 9508 transitions. [2023-11-24 22:04:20,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-24 22:04:20,166 INFO L276 IsEmpty]: Start isEmpty. Operand 6085 states and 9508 transitions. [2023-11-24 22:04:20,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-24 22:04:20,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:20,186 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:20,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:20,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:04:20,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:20,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash -110947751, now seen corresponding path program 1 times [2023-11-24 22:04:20,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:20,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558890816] [2023-11-24 22:04:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:20,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:20,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:20,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:20,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:20,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:20,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-24 22:04:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:20,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-24 22:04:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:20,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:20,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-24 22:04:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:20,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 22:04:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-24 22:04:20,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:20,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558890816] [2023-11-24 22:04:20,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558890816] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:04:20,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033659542] [2023-11-24 22:04:20,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:20,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:04:20,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:04:20,563 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:04:20,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 22:04:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:20,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 22:04:20,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-24 22:04:20,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:20,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033659542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:20,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 22:04:20,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-24 22:04:20,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318232080] [2023-11-24 22:04:20,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:20,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:20,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:20,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:20,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:20,760 INFO L87 Difference]: Start difference. First operand 6085 states and 9508 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-24 22:04:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:21,107 INFO L93 Difference]: Finished difference Result 9149 states and 13829 transitions. [2023-11-24 22:04:21,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:04:21,107 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), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 122 [2023-11-24 22:04:21,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:21,139 INFO L225 Difference]: With dead ends: 9149 [2023-11-24 22:04:21,139 INFO L226 Difference]: Without dead ends: 6373 [2023-11-24 22:04:21,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:21,152 INFO L413 NwaCegarLoop]: 4111 mSDtfsCounter, 4052 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4052 SdHoareTripleChecker+Valid, 4235 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:21,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4052 Valid, 4235 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 22:04:21,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6373 states. [2023-11-24 22:04:21,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6373 to 6335. [2023-11-24 22:04:21,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6335 states, 5468 states have (on average 1.5652889539136796) internal successors, (8559), 5530 states have internal predecessors, (8559), 481 states have call successors, (481), 337 states have call predecessors, (481), 384 states have return successors, (720), 483 states have call predecessors, (720), 479 states have call successors, (720) [2023-11-24 22:04:21,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6335 states to 6335 states and 9760 transitions. [2023-11-24 22:04:21,572 INFO L78 Accepts]: Start accepts. Automaton has 6335 states and 9760 transitions. Word has length 122 [2023-11-24 22:04:21,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:21,573 INFO L495 AbstractCegarLoop]: Abstraction has 6335 states and 9760 transitions. [2023-11-24 22:04:21,574 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), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-24 22:04:21,574 INFO L276 IsEmpty]: Start isEmpty. Operand 6335 states and 9760 transitions. [2023-11-24 22:04:21,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-24 22:04:21,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:21,588 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:21,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-24 22:04:21,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:04:21,794 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:21,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:21,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1027407506, now seen corresponding path program 1 times [2023-11-24 22:04:21,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:21,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948236993] [2023-11-24 22:04:21,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:21,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:21,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:21,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:21,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:21,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:21,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-24 22:04:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:21,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:21,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-24 22:04:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:21,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-24 22:04:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:21,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:21,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-24 22:04:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-24 22:04:21,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:21,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948236993] [2023-11-24 22:04:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948236993] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:04:21,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789022856] [2023-11-24 22:04:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:21,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:04:21,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:04:21,926 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:04:21,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 22:04:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:22,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 22:04:22,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-24 22:04:22,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:22,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789022856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:22,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 22:04:22,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-24 22:04:22,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874294140] [2023-11-24 22:04:22,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:22,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:22,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:22,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:22,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:22,092 INFO L87 Difference]: Start difference. First operand 6335 states and 9760 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-24 22:04:22,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:22,572 INFO L93 Difference]: Finished difference Result 14423 states and 21066 transitions. [2023-11-24 22:04:22,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:04:22,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2023-11-24 22:04:22,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:22,611 INFO L225 Difference]: With dead ends: 14423 [2023-11-24 22:04:22,612 INFO L226 Difference]: Without dead ends: 10223 [2023-11-24 22:04:22,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:22,625 INFO L413 NwaCegarLoop]: 4193 mSDtfsCounter, 120 mSDsluCounter, 4089 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 8282 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:22,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 8282 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 22:04:22,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10223 states. [2023-11-24 22:04:23,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10223 to 10207. [2023-11-24 22:04:23,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10207 states, 8526 states have (on average 1.4828759089842833) internal successors, (12643), 8648 states have internal predecessors, (12643), 927 states have call successors, (927), 657 states have call predecessors, (927), 752 states have return successors, (1550), 933 states have call predecessors, (1550), 925 states have call successors, (1550) [2023-11-24 22:04:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10207 states to 10207 states and 15120 transitions. [2023-11-24 22:04:23,167 INFO L78 Accepts]: Start accepts. Automaton has 10207 states and 15120 transitions. Word has length 123 [2023-11-24 22:04:23,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:23,168 INFO L495 AbstractCegarLoop]: Abstraction has 10207 states and 15120 transitions. [2023-11-24 22:04:23,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-24 22:04:23,168 INFO L276 IsEmpty]: Start isEmpty. Operand 10207 states and 15120 transitions. [2023-11-24 22:04:23,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-24 22:04:23,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:23,191 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:23,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:23,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:04:23,398 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:23,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:23,398 INFO L85 PathProgramCache]: Analyzing trace with hash -297517008, now seen corresponding path program 1 times [2023-11-24 22:04:23,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:23,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709235910] [2023-11-24 22:04:23,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:23,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:23,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:23,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:23,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:23,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:23,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:23,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-24 22:04:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:23,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-24 22:04:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:23,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:23,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-24 22:04:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:23,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:23,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-24 22:04:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-24 22:04:23,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:23,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709235910] [2023-11-24 22:04:23,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709235910] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:04:23,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935233156] [2023-11-24 22:04:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:23,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:04:23,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:04:23,561 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:04:23,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 22:04:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:23,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 22:04:23,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-24 22:04:23,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:23,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935233156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:23,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 22:04:23,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-24 22:04:23,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849136039] [2023-11-24 22:04:23,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:23,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:23,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:23,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:23,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:23,724 INFO L87 Difference]: Start difference. First operand 10207 states and 15120 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-24 22:04:24,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:24,111 INFO L93 Difference]: Finished difference Result 14381 states and 21212 transitions. [2023-11-24 22:04:24,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:04:24,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 124 [2023-11-24 22:04:24,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:24,155 INFO L225 Difference]: With dead ends: 14381 [2023-11-24 22:04:24,155 INFO L226 Difference]: Without dead ends: 10227 [2023-11-24 22:04:24,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:24,172 INFO L413 NwaCegarLoop]: 4160 mSDtfsCounter, 106 mSDsluCounter, 4083 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 8243 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:24,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 8243 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 22:04:24,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10227 states. [2023-11-24 22:04:24,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10227 to 10183. [2023-11-24 22:04:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10183 states, 8502 states have (on average 1.4687132439426018) internal successors, (12487), 8624 states have internal predecessors, (12487), 927 states have call successors, (927), 657 states have call predecessors, (927), 752 states have return successors, (1550), 933 states have call predecessors, (1550), 925 states have call successors, (1550) [2023-11-24 22:04:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10183 states to 10183 states and 14964 transitions. [2023-11-24 22:04:24,814 INFO L78 Accepts]: Start accepts. Automaton has 10183 states and 14964 transitions. Word has length 124 [2023-11-24 22:04:24,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:24,814 INFO L495 AbstractCegarLoop]: Abstraction has 10183 states and 14964 transitions. [2023-11-24 22:04:24,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-24 22:04:24,815 INFO L276 IsEmpty]: Start isEmpty. Operand 10183 states and 14964 transitions. [2023-11-24 22:04:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-24 22:04:24,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:24,834 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:24,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:25,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 22:04:25,039 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:25,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:25,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1189629616, now seen corresponding path program 1 times [2023-11-24 22:04:25,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:25,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036541717] [2023-11-24 22:04:25,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:25,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:25,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:25,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:25,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:25,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:25,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-24 22:04:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:25,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-24 22:04:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:25,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:25,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-24 22:04:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:25,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:25,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-24 22:04:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-24 22:04:25,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:25,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036541717] [2023-11-24 22:04:25,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036541717] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:04:25,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018401942] [2023-11-24 22:04:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:25,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:04:25,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:04:25,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:04:25,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 22:04:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:25,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 22:04:25,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-24 22:04:25,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:25,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018401942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:25,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 22:04:25,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-24 22:04:25,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899530427] [2023-11-24 22:04:25,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:25,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:25,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:25,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:25,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:25,376 INFO L87 Difference]: Start difference. First operand 10183 states and 14964 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-24 22:04:25,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:25,748 INFO L93 Difference]: Finished difference Result 16127 states and 23370 transitions. [2023-11-24 22:04:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:04:25,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 124 [2023-11-24 22:04:25,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:25,780 INFO L225 Difference]: With dead ends: 16127 [2023-11-24 22:04:25,780 INFO L226 Difference]: Without dead ends: 9051 [2023-11-24 22:04:25,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:25,802 INFO L413 NwaCegarLoop]: 4092 mSDtfsCounter, 4081 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4081 SdHoareTripleChecker+Valid, 4112 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:25,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4081 Valid, 4112 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 22:04:25,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9051 states. [2023-11-24 22:04:26,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9051 to 8643. [2023-11-24 22:04:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8643 states, 7288 states have (on average 1.4523874862788144) internal successors, (10585), 7378 states have internal predecessors, (10585), 755 states have call successors, (755), 535 states have call predecessors, (755), 598 states have return successors, (1098), 745 states have call predecessors, (1098), 753 states have call successors, (1098) [2023-11-24 22:04:26,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8643 states to 8643 states and 12438 transitions. [2023-11-24 22:04:26,257 INFO L78 Accepts]: Start accepts. Automaton has 8643 states and 12438 transitions. Word has length 124 [2023-11-24 22:04:26,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:26,258 INFO L495 AbstractCegarLoop]: Abstraction has 8643 states and 12438 transitions. [2023-11-24 22:04:26,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-24 22:04:26,258 INFO L276 IsEmpty]: Start isEmpty. Operand 8643 states and 12438 transitions. [2023-11-24 22:04:26,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-24 22:04:26,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:26,273 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:26,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:26,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-24 22:04:26,480 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:26,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:26,480 INFO L85 PathProgramCache]: Analyzing trace with hash 34894625, now seen corresponding path program 1 times [2023-11-24 22:04:26,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:26,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814227344] [2023-11-24 22:04:26,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:26,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:26,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:26,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:26,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:26,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:26,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-24 22:04:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:26,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-24 22:04:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:26,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:26,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-24 22:04:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:26,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:26,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-24 22:04:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-24 22:04:26,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:26,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814227344] [2023-11-24 22:04:26,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814227344] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:04:26,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687613193] [2023-11-24 22:04:26,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:26,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:04:26,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:04:26,617 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:04:26,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 22:04:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:26,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 22:04:26,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:26,841 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-24 22:04:26,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:26,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687613193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:26,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 22:04:26,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-11-24 22:04:26,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689676351] [2023-11-24 22:04:26,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:26,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:04:26,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:26,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:04:26,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-24 22:04:26,845 INFO L87 Difference]: Start difference. First operand 8643 states and 12438 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 22:04:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:27,506 INFO L93 Difference]: Finished difference Result 11183 states and 15869 transitions. [2023-11-24 22:04:27,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:04:27,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 125 [2023-11-24 22:04:27,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:27,527 INFO L225 Difference]: With dead ends: 11183 [2023-11-24 22:04:27,527 INFO L226 Difference]: Without dead ends: 6959 [2023-11-24 22:04:27,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-24 22:04:27,538 INFO L413 NwaCegarLoop]: 4044 mSDtfsCounter, 4099 mSDsluCounter, 8044 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4107 SdHoareTripleChecker+Valid, 12088 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:27,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4107 Valid, 12088 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 22:04:27,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6959 states. [2023-11-24 22:04:27,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6959 to 6935. [2023-11-24 22:04:27,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6935 states, 5938 states have (on average 1.469013135735938) internal successors, (8723), 5992 states have internal predecessors, (8723), 567 states have call successors, (567), 397 states have call predecessors, (567), 428 states have return successors, (766), 553 states have call predecessors, (766), 565 states have call successors, (766) [2023-11-24 22:04:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6935 states to 6935 states and 10056 transitions. [2023-11-24 22:04:27,896 INFO L78 Accepts]: Start accepts. Automaton has 6935 states and 10056 transitions. Word has length 125 [2023-11-24 22:04:27,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:27,896 INFO L495 AbstractCegarLoop]: Abstraction has 6935 states and 10056 transitions. [2023-11-24 22:04:27,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 22:04:27,897 INFO L276 IsEmpty]: Start isEmpty. Operand 6935 states and 10056 transitions. [2023-11-24 22:04:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-24 22:04:27,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:27,905 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:27,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:28,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 22:04:28,128 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:28,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:28,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1584080289, now seen corresponding path program 1 times [2023-11-24 22:04:28,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:28,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733786296] [2023-11-24 22:04:28,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:28,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:28,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:28,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:28,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:28,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:28,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-24 22:04:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:28,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-24 22:04:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:28,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:28,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-24 22:04:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:28,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:28,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-24 22:04:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-24 22:04:28,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:28,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733786296] [2023-11-24 22:04:28,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733786296] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:04:28,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638242681] [2023-11-24 22:04:28,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:28,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:04:28,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:04:28,288 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:04:28,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 22:04:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:28,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 22:04:28,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:28,501 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-24 22:04:28,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:28,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638242681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:28,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 22:04:28,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-11-24 22:04:28,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176485806] [2023-11-24 22:04:28,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:28,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:04:28,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:28,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:04:28,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-24 22:04:28,505 INFO L87 Difference]: Start difference. First operand 6935 states and 10056 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 22:04:29,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:29,011 INFO L93 Difference]: Finished difference Result 10847 states and 15238 transitions. [2023-11-24 22:04:29,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:04:29,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 125 [2023-11-24 22:04:29,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:29,033 INFO L225 Difference]: With dead ends: 10847 [2023-11-24 22:04:29,034 INFO L226 Difference]: Without dead ends: 6579 [2023-11-24 22:04:29,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-24 22:04:29,046 INFO L413 NwaCegarLoop]: 4042 mSDtfsCounter, 4129 mSDsluCounter, 8040 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4138 SdHoareTripleChecker+Valid, 12082 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:29,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4138 Valid, 12082 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 22:04:29,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6579 states. [2023-11-24 22:04:29,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6579 to 4985. [2023-11-24 22:04:29,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4985 states, 4408 states have (on average 1.5181488203266789) internal successors, (6692), 4438 states have internal predecessors, (6692), 331 states have call successors, (331), 229 states have call predecessors, (331), 244 states have return successors, (439), 321 states have call predecessors, (439), 329 states have call successors, (439) [2023-11-24 22:04:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4985 states to 4985 states and 7462 transitions. [2023-11-24 22:04:29,307 INFO L78 Accepts]: Start accepts. Automaton has 4985 states and 7462 transitions. Word has length 125 [2023-11-24 22:04:29,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:29,308 INFO L495 AbstractCegarLoop]: Abstraction has 4985 states and 7462 transitions. [2023-11-24 22:04:29,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 22:04:29,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4985 states and 7462 transitions. [2023-11-24 22:04:29,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-24 22:04:29,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:29,313 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:29,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:29,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-24 22:04:29,520 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:29,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:29,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1827378017, now seen corresponding path program 1 times [2023-11-24 22:04:29,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:29,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996549013] [2023-11-24 22:04:29,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:29,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:29,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:29,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:29,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:29,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:29,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:29,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-24 22:04:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:29,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-24 22:04:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:29,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:29,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-24 22:04:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:29,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:29,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-24 22:04:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:29,661 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-24 22:04:29,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:29,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996549013] [2023-11-24 22:04:29,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996549013] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:04:29,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704625012] [2023-11-24 22:04:29,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:29,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:04:29,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:04:29,664 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:04:29,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 22:04:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:29,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 22:04:29,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-11-24 22:04:29,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:29,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704625012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:29,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 22:04:29,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-24 22:04:29,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926282839] [2023-11-24 22:04:29,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:29,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:04:29,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:29,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:04:29,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:04:29,802 INFO L87 Difference]: Start difference. First operand 4985 states and 7462 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 22:04:30,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:30,032 INFO L93 Difference]: Finished difference Result 6831 states and 9780 transitions. [2023-11-24 22:04:30,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:04:30,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 125 [2023-11-24 22:04:30,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:30,043 INFO L225 Difference]: With dead ends: 6831 [2023-11-24 22:04:30,043 INFO L226 Difference]: Without dead ends: 3978 [2023-11-24 22:04:30,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:04:30,051 INFO L413 NwaCegarLoop]: 4084 mSDtfsCounter, 11 mSDsluCounter, 8161 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12245 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:30,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12245 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 22:04:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3978 states. [2023-11-24 22:04:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3978 to 3978. [2023-11-24 22:04:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 3609 states have (on average 1.5777223607647548) internal successors, (5694), 3629 states have internal predecessors, (5694), 209 states have call successors, (209), 147 states have call predecessors, (209), 158 states have return successors, (252), 203 states have call predecessors, (252), 207 states have call successors, (252) [2023-11-24 22:04:30,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 6155 transitions. [2023-11-24 22:04:30,216 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 6155 transitions. Word has length 125 [2023-11-24 22:04:30,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:30,216 INFO L495 AbstractCegarLoop]: Abstraction has 3978 states and 6155 transitions. [2023-11-24 22:04:30,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 22:04:30,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 6155 transitions. [2023-11-24 22:04:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-24 22:04:30,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:30,221 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 22:04:30,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:30,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-24 22:04:30,427 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:30,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:30,428 INFO L85 PathProgramCache]: Analyzing trace with hash -634394591, now seen corresponding path program 1 times [2023-11-24 22:04:30,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:30,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702784446] [2023-11-24 22:04:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:30,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:30,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:30,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:30,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:30,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:30,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:30,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-24 22:04:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:30,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-24 22:04:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:30,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-24 22:04:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:30,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-24 22:04:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-24 22:04:30,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:30,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702784446] [2023-11-24 22:04:30,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702784446] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:04:30,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646542421] [2023-11-24 22:04:30,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:30,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:04:30,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:04:30,552 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:04:30,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 22:04:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:30,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 22:04:30,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-24 22:04:30,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:30,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646542421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:30,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 22:04:30,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-24 22:04:30,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629996311] [2023-11-24 22:04:30,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:30,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:04:30,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:30,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:04:30,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:04:30,770 INFO L87 Difference]: Start difference. First operand 3978 states and 6155 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 22:04:30,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:30,985 INFO L93 Difference]: Finished difference Result 5069 states and 7465 transitions. [2023-11-24 22:04:30,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:04:30,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 125 [2023-11-24 22:04:30,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:30,995 INFO L225 Difference]: With dead ends: 5069 [2023-11-24 22:04:30,995 INFO L226 Difference]: Without dead ends: 2852 [2023-11-24 22:04:31,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:04:31,001 INFO L413 NwaCegarLoop]: 4083 mSDtfsCounter, 2 mSDsluCounter, 8161 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12244 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:31,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12244 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 22:04:31,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2023-11-24 22:04:31,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2852. [2023-11-24 22:04:31,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2704 states have (on average 1.7082100591715976) internal successors, (4619), 2713 states have internal predecessors, (4619), 85 states have call successors, (85), 58 states have call predecessors, (85), 61 states have return successors, (87), 81 states have call predecessors, (87), 83 states have call successors, (87) [2023-11-24 22:04:31,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 4791 transitions. [2023-11-24 22:04:31,115 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 4791 transitions. Word has length 125 [2023-11-24 22:04:31,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:31,116 INFO L495 AbstractCegarLoop]: Abstraction has 2852 states and 4791 transitions. [2023-11-24 22:04:31,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 22:04:31,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 4791 transitions. [2023-11-24 22:04:31,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-24 22:04:31,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:31,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:31,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:31,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-24 22:04:31,325 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:31,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:31,326 INFO L85 PathProgramCache]: Analyzing trace with hash 262632801, now seen corresponding path program 1 times [2023-11-24 22:04:31,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:31,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116234997] [2023-11-24 22:04:31,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:31,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:31,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:31,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:31,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:31,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-24 22:04:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-24 22:04:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:31,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-24 22:04:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:31,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-24 22:04:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-24 22:04:31,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:31,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116234997] [2023-11-24 22:04:31,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116234997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:31,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:31,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 22:04:31,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062018638] [2023-11-24 22:04:31,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:31,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:04:31,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:31,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:04:31,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:04:31,524 INFO L87 Difference]: Start difference. First operand 2852 states and 4791 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 5 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-24 22:04:32,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:32,142 INFO L93 Difference]: Finished difference Result 2874 states and 4812 transitions. [2023-11-24 22:04:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:04:32,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 5 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 125 [2023-11-24 22:04:32,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:32,152 INFO L225 Difference]: With dead ends: 2874 [2023-11-24 22:04:32,152 INFO L226 Difference]: Without dead ends: 2871 [2023-11-24 22:04:32,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-24 22:04:32,155 INFO L413 NwaCegarLoop]: 4084 mSDtfsCounter, 4294 mSDsluCounter, 12093 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4317 SdHoareTripleChecker+Valid, 16177 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:32,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4317 Valid, 16177 Invalid, 417 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 22:04:32,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2023-11-24 22:04:32,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2851. [2023-11-24 22:04:32,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2851 states, 2704 states have (on average 1.7074704142011834) internal successors, (4617), 2712 states have internal predecessors, (4617), 84 states have call successors, (84), 58 states have call predecessors, (84), 61 states have return successors, (87), 81 states have call predecessors, (87), 83 states have call successors, (87) [2023-11-24 22:04:32,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 4788 transitions. [2023-11-24 22:04:32,310 INFO L78 Accepts]: Start accepts. Automaton has 2851 states and 4788 transitions. Word has length 125 [2023-11-24 22:04:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:32,310 INFO L495 AbstractCegarLoop]: Abstraction has 2851 states and 4788 transitions. [2023-11-24 22:04:32,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 5 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-24 22:04:32,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2851 states and 4788 transitions. [2023-11-24 22:04:32,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-24 22:04:32,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:32,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:32,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 22:04:32,314 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:32,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:32,315 INFO L85 PathProgramCache]: Analyzing trace with hash -450479607, now seen corresponding path program 1 times [2023-11-24 22:04:32,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:32,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202595928] [2023-11-24 22:04:32,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:32,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:32,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:32,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-24 22:04:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:32,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 22:04:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:32,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-24 22:04:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:32,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-24 22:04:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-24 22:04:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:32,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-24 22:04:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:32,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-24 22:04:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:32,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 22:04:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-24 22:04:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-24 22:04:32,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:32,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202595928] [2023-11-24 22:04:32,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202595928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:32,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:32,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:04:32,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606464121] [2023-11-24 22:04:32,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:32,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:04:32,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:32,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:04:32,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:04:32,445 INFO L87 Difference]: Start difference. First operand 2851 states and 4788 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 22:04:32,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:32,859 INFO L93 Difference]: Finished difference Result 3246 states and 5240 transitions. [2023-11-24 22:04:32,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:04:32,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 129 [2023-11-24 22:04:32,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:32,869 INFO L225 Difference]: With dead ends: 3246 [2023-11-24 22:04:32,869 INFO L226 Difference]: Without dead ends: 2881 [2023-11-24 22:04:32,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:04:32,872 INFO L413 NwaCegarLoop]: 4045 mSDtfsCounter, 93 mSDsluCounter, 12027 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 16072 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:32,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 16072 Invalid, 244 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 22:04:32,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2023-11-24 22:04:32,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2853. [2023-11-24 22:04:32,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2706 states have (on average 1.7069475240206948) internal successors, (4619), 2714 states have internal predecessors, (4619), 84 states have call successors, (84), 58 states have call predecessors, (84), 61 states have return successors, (87), 81 states have call predecessors, (87), 83 states have call successors, (87) [2023-11-24 22:04:33,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4790 transitions. [2023-11-24 22:04:33,005 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4790 transitions. Word has length 129 [2023-11-24 22:04:33,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:33,006 INFO L495 AbstractCegarLoop]: Abstraction has 2853 states and 4790 transitions. [2023-11-24 22:04:33,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 22:04:33,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4790 transitions. [2023-11-24 22:04:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-24 22:04:33,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:33,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:33,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 22:04:33,010 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:33,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:33,010 INFO L85 PathProgramCache]: Analyzing trace with hash 149274242, now seen corresponding path program 1 times [2023-11-24 22:04:33,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:33,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162581493] [2023-11-24 22:04:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:33,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:04:33,033 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:04:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:04:33,116 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:04:33,116 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:04:33,118 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-24 22:04:33,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-24 22:04:33,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-24 22:04:33,127 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:33,132 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 22:04:33,230 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-24 22:04:33,242 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-24 22:04:33,249 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-24 22:04:33,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 10:04:33 BoogieIcfgContainer [2023-11-24 22:04:33,289 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 22:04:33,290 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:04:33,290 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:04:33,290 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:04:33,291 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:04:09" (3/4) ... [2023-11-24 22:04:33,291 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 22:04:33,333 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-24 22:04:33,335 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-24 22:04:33,342 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-11-24 22:04:33,457 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 22:04:33,457 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:04:33,459 INFO L158 Benchmark]: Toolchain (without parser) took 39748.41ms. Allocated memory was 167.8MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 129.8MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 652.6MB. Max. memory is 16.1GB. [2023-11-24 22:04:33,459 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 109.1MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:04:33,460 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4345.99ms. Allocated memory was 167.8MB in the beginning and 237.0MB in the end (delta: 69.2MB). Free memory was 128.9MB in the beginning and 136.6MB in the end (delta: -7.6MB). Peak memory consumption was 137.9MB. Max. memory is 16.1GB. [2023-11-24 22:04:33,460 INFO L158 Benchmark]: Boogie Procedure Inliner took 515.12ms. Allocated memory is still 237.0MB. Free memory was 136.6MB in the beginning and 102.2MB in the end (delta: 34.4MB). Peak memory consumption was 105.9MB. Max. memory is 16.1GB. [2023-11-24 22:04:33,461 INFO L158 Benchmark]: Boogie Preprocessor took 735.29ms. Allocated memory was 237.0MB in the beginning and 379.6MB in the end (delta: 142.6MB). Free memory was 102.2MB in the beginning and 196.4MB in the end (delta: -94.2MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2023-11-24 22:04:33,461 INFO L158 Benchmark]: RCFGBuilder took 10404.16ms. Allocated memory was 379.6MB in the beginning and 851.4MB in the end (delta: 471.9MB). Free memory was 196.4MB in the beginning and 591.4MB in the end (delta: -395.0MB). Peak memory consumption was 264.2MB. Max. memory is 16.1GB. [2023-11-24 22:04:33,462 INFO L158 Benchmark]: TraceAbstraction took 23569.69ms. Allocated memory was 851.4MB in the beginning and 2.2GB in the end (delta: 1.3GB). Free memory was 590.3MB in the beginning and 1.5GB in the end (delta: -903.4MB). Peak memory consumption was 415.7MB. Max. memory is 16.1GB. [2023-11-24 22:04:33,466 INFO L158 Benchmark]: Witness Printer took 167.98ms. Allocated memory is still 2.2GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 22:04:33,474 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 109.1MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4345.99ms. Allocated memory was 167.8MB in the beginning and 237.0MB in the end (delta: 69.2MB). Free memory was 128.9MB in the beginning and 136.6MB in the end (delta: -7.6MB). Peak memory consumption was 137.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 515.12ms. Allocated memory is still 237.0MB. Free memory was 136.6MB in the beginning and 102.2MB in the end (delta: 34.4MB). Peak memory consumption was 105.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 735.29ms. Allocated memory was 237.0MB in the beginning and 379.6MB in the end (delta: 142.6MB). Free memory was 102.2MB in the beginning and 196.4MB in the end (delta: -94.2MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * RCFGBuilder took 10404.16ms. Allocated memory was 379.6MB in the beginning and 851.4MB in the end (delta: 471.9MB). Free memory was 196.4MB in the beginning and 591.4MB in the end (delta: -395.0MB). Peak memory consumption was 264.2MB. Max. memory is 16.1GB. * TraceAbstraction took 23569.69ms. Allocated memory was 851.4MB in the beginning and 2.2GB in the end (delta: 1.3GB). Free memory was 590.3MB in the beginning and 1.5GB in the end (delta: -903.4MB). Peak memory consumption was 415.7MB. Max. memory is 16.1GB. * Witness Printer took 167.98ms. Allocated memory is still 2.2GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11173]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L33] int d= 4; [L34] int c= 3; [L35] int e= 5; [L36] int a= 1; [L37] int f= 6; [L38] int b= 2; [L40] int a9 = 18; [L41] int a27 = 1; [L42] int a2 = 10; [L43] int a16 = 1; [L44] int a15 = 1; [L45] int a12 = 4; [L46] int a25 = 1; [L47] int a20 = 5; [L11177] int m_pc = 0; [L11178] int t1_pc = 0; [L11179] int m_st ; [L11180] int t1_st ; [L11181] int m_i ; [L11182] int t1_i ; [L11183] int M_E = 2; [L11184] int T1_E = 2; [L11185] int E_M = 2; [L11186] int E_1 = 2; [L11190] int token ; [L11192] int local ; [L11651] COND FALSE !(__VERIFIER_nondet_int()) [L11654] CALL main2() [L11638] int __retres1 ; [L11642] CALL init_model() [L11553] m_i = 1 [L11554] t1_i = 1 [L11642] RET init_model() [L11643] CALL start_simulation() [L11579] int kernel_st ; [L11580] int tmp ; [L11581] int tmp___0 ; [L11585] kernel_st = 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11586] FCALL update_channels() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11587] CALL init_threads() [L11335] COND TRUE m_i == 1 [L11336] m_st = 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11340] COND TRUE t1_i == 1 [L11341] t1_st = 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11587] RET init_threads() [L11588] CALL fire_delta_events() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11424] COND FALSE !(M_E == 0) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11429] COND FALSE !(T1_E == 0) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11434] COND FALSE !(E_M == 0) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11439] COND FALSE !(E_1 == 0) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11588] RET fire_delta_events() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11589] CALL activate_threads() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11289] COND FALSE !(m_pc == 1) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11299] __retres1 = 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND FALSE !(\read(tmp)) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, tmp=0, token=0] [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11308] COND FALSE !(t1_pc == 1) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11318] __retres1 = 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND FALSE !(\read(tmp___0)) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(m_st)=0, \old(t1_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, tmp=0, tmp___0=0, token=0] [L11589] RET activate_threads() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11590] CALL reset_delta_events() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11452] COND FALSE !(M_E == 1) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11457] COND FALSE !(T1_E == 1) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11462] COND FALSE !(E_M == 1) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11467] COND FALSE !(E_1 == 1) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, \old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11590] RET reset_delta_events() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11593] COND TRUE 1 [L11596] kernel_st = 1 [L11597] CALL eval() [L11371] int tmp ; VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11375] COND TRUE 1 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11378] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11350] int __retres1 ; VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11366] return (__retres1); [L11378] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, token=0] [L11378] tmp = exists_runnable_thread() [L11380] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, tmp=1, token=0] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND FALSE, EXPR !(\read(tmp_ndt_1)) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, tmp=1, tmp_ndt_1=0, token=0] [L11385-L11396] { int tmp_ndt_1; tmp_ndt_1 = __VERIFIER_nondet_int(); if (tmp_ndt_1) { { m_st = 1; master(); } } else { } } VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, tmp=1, token=0] [L11399] COND TRUE t1_st == 0 [L11400] int tmp_ndt_2; [L11401] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L11402] COND TRUE, EXPR \read(tmp_ndt_2) [L11404] EXPR t1_st = 1 [L11405] CALL, EXPR transmit1() [L11253] COND TRUE t1_pc == 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=1, token=0] [L11264] COND TRUE 1 [L11266] t1_pc = 1 [L11267] t1_st = 2 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11405] RET, EXPR transmit1() [L11399-L11410] { int tmp_ndt_2; tmp_ndt_2 = __VERIFIER_nondet_int(); if (tmp_ndt_2) { { t1_st = 1; transmit1(); } } else { } } VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=0] [L11375] COND TRUE 1 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=0] [L11378] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11350] int __retres1 ; VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11366] return (__retres1); [L11378] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=0] [L11378] tmp = exists_runnable_thread() [L11380] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=0] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND TRUE, EXPR \read(tmp_ndt_1) [L11390] EXPR m_st = 1 [L11391] CALL, EXPR master() [L11195] int tmp_var = __VERIFIER_nondet_int(); [L11197] COND TRUE m_pc == 0 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=0] [L11208] COND TRUE 1 [L11211] token = __VERIFIER_nondet_int() [L11212] local = token [L11213] E_1 = 1 VAL [E_1=1, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=0, token=0] [L11214] CALL immediate_notify() VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11506] CALL activate_threads() VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11289] COND FALSE !(m_pc == 1) VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11299] __retres1 = 0 VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND FALSE !(\read(tmp)) VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp=0, token=0] [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11308] COND TRUE t1_pc == 1 VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11309] COND TRUE E_1 == 1 [L11310] __retres1 = 1 VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=0] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND TRUE \read(tmp___0) [L11493] t1_st = 0 VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, tmp=0, tmp___0=1, token=0] [L11506] RET activate_threads() VAL [E_1=1, E_M=2, M_E=2, T1_E=2, \old(m_st)=1, \old(t1_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, token=0] [L11214] RET immediate_notify() VAL [E_1=1, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, tmp_var=0, token=0] [L11215] E_1 = 2 [L11216] m_pc = 1 [L11217] m_st = 2 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0, tmp_var=0, token=0] [L11391] RET, EXPR master() [L11385-L11396] { int tmp_ndt_1; tmp_ndt_1 = __VERIFIER_nondet_int(); if (tmp_ndt_1) { { m_st = 1; master(); } } else { } } VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0, tmp=1, token=0] [L11399] COND TRUE t1_st == 0 [L11400] int tmp_ndt_2; [L11401] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L11402] COND TRUE, EXPR \read(tmp_ndt_2) [L11404] EXPR t1_st = 1 [L11405] CALL, EXPR transmit1() [L11253] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L11256] COND TRUE t1_pc == 1 [L11272] token += 1 [L11273] E_M = 1 VAL [E_1=2, E_M=1, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11274] CALL immediate_notify() VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11506] CALL activate_threads() VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11289] COND TRUE m_pc == 1 VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11290] COND TRUE E_M == 1 [L11291] __retres1 = 1 VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND TRUE \read(tmp) [L11485] m_st = 0 VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, tmp=1, token=1] [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11308] COND TRUE t1_pc == 1 VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11309] COND FALSE !(E_1 == 1) VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11318] __retres1 = 0 VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND FALSE !(\read(tmp___0)) VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, tmp=1, tmp___0=0, token=1] [L11506] RET activate_threads() VAL [E_1=2, E_M=1, M_E=2, T1_E=2, \old(m_st)=2, \old(t1_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11274] RET immediate_notify() VAL [E_1=2, E_M=1, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11275] E_M = 2 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=1, token=1] [L11264] COND TRUE 1 [L11266] t1_pc = 1 [L11267] t1_st = 2 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, token=1] [L11405] RET, EXPR transmit1() [L11399-L11410] { int tmp_ndt_2; tmp_ndt_2 = __VERIFIER_nondet_int(); if (tmp_ndt_2) { { t1_st = 1; transmit1(); } } else { } } VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=1] [L11375] COND TRUE 1 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=1] [L11378] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, token=1] [L11350] int __retres1 ; VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, token=1] [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, token=1] [L11366] return (__retres1); [L11378] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=1] [L11378] tmp = exists_runnable_thread() [L11380] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, tmp=1, token=1] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND TRUE \read(tmp_ndt_1) [L11390] m_st = 1 [L11391] CALL master() [L11195] int tmp_var = __VERIFIER_nondet_int(); [L11197] COND FALSE !(m_pc == 0) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11200] COND TRUE m_pc == 1 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11222] COND FALSE !(token != local + 1) VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11227] COND TRUE tmp_var <= 5 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11228] COND TRUE tmp_var >= 5 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11233] COND TRUE tmp_var <= 5 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11234] COND TRUE tmp_var >= 5 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11235] COND TRUE tmp_var == 5 VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, tmp_var=5, token=1] [L11236] CALL error() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=1] [L11173] reach_error() VAL [E_1=2, E_M=2, M_E=2, T1_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, token=1] - UnprovableResult [Line: 11049]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 2226 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 23.3s, OverallIterations: 18, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46594 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46497 mSDsluCounter, 211879 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 142148 mSDsCounter, 430 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4490 IncrementalHoareTripleChecker+Invalid, 4920 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 430 mSolverCounterUnsat, 69731 mSDtfsCounter, 4490 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1633 GetRequests, 1501 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10207occurred in iteration=9, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 17 MinimizatonAttempts, 2847 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 3012 NumberOfCodeBlocks, 3012 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 2855 ConstructedInterpolants, 0 QuantifiedInterpolants, 4370 SizeOfPredicates, 2 NumberOfNonLiveVariables, 4144 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 27 InterpolantComputations, 17 PerfectInterpolantSequences, 1310/1466 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-24 22:04:33,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931f26b9-c93b-4599-a360-ae244d2c9e78/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE