./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ecd45-6760-4fec-a591-acb9514e0990/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ecd45-6760-4fec-a591-acb9514e0990/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ecd45-6760-4fec-a591-acb9514e0990/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ecd45-6760-4fec-a591-acb9514e0990/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ecd45-6760-4fec-a591-acb9514e0990/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ecd45-6760-4fec-a591-acb9514e0990/bin/uautomizer-verify-uTZkv6EMXl --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 656e7d531f093f57119c43761759c34009a10647aaa5132e17630f3bef948c7c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:13:32,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:13:33,076 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ecd45-6760-4fec-a591-acb9514e0990/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:13:33,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:13:33,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:13:33,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:13:33,122 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:13:33,123 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:13:33,124 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:13:33,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:13:33,130 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:13:33,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:13:33,131 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:13:33,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:13:33,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:13:33,133 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:13:33,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:13:33,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:13:33,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:13:33,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:13:33,136 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:13:33,136 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:13:33,137 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:13:33,137 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:13:33,137 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:13:33,138 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:13:33,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:13:33,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:13:33,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:13:33,140 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:13:33,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:13:33,141 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:13:33,142 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:13:33,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:13:33,142 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:13:33,142 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:13:33,143 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:13:33,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:13:33,143 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:13:33,143 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_fb2ecd45-6760-4fec-a591-acb9514e0990/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ecd45-6760-4fec-a591-acb9514e0990/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 656e7d531f093f57119c43761759c34009a10647aaa5132e17630f3bef948c7c [2023-11-12 02:13:33,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:13:33,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:13:33,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:13:33,440 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:13:33,440 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:13:33,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ecd45-6760-4fec-a591-acb9514e0990/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c [2023-11-12 02:13:36,631 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:13:37,386 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:13:37,387 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ecd45-6760-4fec-a591-acb9514e0990/sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c [2023-11-12 02:13:37,444 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ecd45-6760-4fec-a591-acb9514e0990/bin/uautomizer-verify-uTZkv6EMXl/data/dd70a7c95/35080d2adc1d4c44947717277572058c/FLAGf458d568d [2023-11-12 02:13:37,462 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ecd45-6760-4fec-a591-acb9514e0990/bin/uautomizer-verify-uTZkv6EMXl/data/dd70a7c95/35080d2adc1d4c44947717277572058c [2023-11-12 02:13:37,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:13:37,468 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:13:37,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:13:37,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:13:37,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:13:37,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:13:37" (1/1) ... [2023-11-12 02:13:37,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da5a3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:37, skipping insertion in model container [2023-11-12 02:13:37,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:13:37" (1/1) ... [2023-11-12 02:13:37,750 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:13:39,970 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_fb2ecd45-6760-4fec-a591-acb9514e0990/sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c[376251,376264] [2023-11-12 02:13:40,009 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_fb2ecd45-6760-4fec-a591-acb9514e0990/sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c[383339,383352] [2023-11-12 02:13:40,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:13:40,318 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:13:41,565 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_fb2ecd45-6760-4fec-a591-acb9514e0990/sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c[376251,376264] [2023-11-12 02:13:41,578 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_fb2ecd45-6760-4fec-a591-acb9514e0990/sv-benchmarks/c/combinations/Problem05_label41+token_ring.05.cil-1.c[383339,383352] [2023-11-12 02:13:41,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:13:41,684 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:13:41,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:41 WrapperNode [2023-11-12 02:13:41,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:13:41,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:13:41,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:13:41,686 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:13:41,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:41" (1/1) ... [2023-11-12 02:13:41,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:41" (1/1) ... [2023-11-12 02:13:42,234 INFO L138 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12808 [2023-11-12 02:13:42,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:13:42,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:13:42,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:13:42,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:13:42,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:41" (1/1) ... [2023-11-12 02:13:42,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:41" (1/1) ... [2023-11-12 02:13:42,302 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:41" (1/1) ... [2023-11-12 02:13:42,302 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:41" (1/1) ... [2023-11-12 02:13:42,545 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:41" (1/1) ... [2023-11-12 02:13:42,585 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:41" (1/1) ... [2023-11-12 02:13:42,606 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:41" (1/1) ... [2023-11-12 02:13:42,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:41" (1/1) ... [2023-11-12 02:13:42,826 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:13:42,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:13:42,834 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:13:42,835 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:13:42,836 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:41" (1/1) ... [2023-11-12 02:13:42,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:13:42,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ecd45-6760-4fec-a591-acb9514e0990/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:42,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ecd45-6760-4fec-a591-acb9514e0990/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:13:42,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ecd45-6760-4fec-a591-acb9514e0990/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:13:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:13:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-12 02:13:43,015 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-12 02:13:43,016 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-12 02:13:43,016 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-12 02:13:43,016 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-12 02:13:43,016 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-12 02:13:43,016 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-12 02:13:43,017 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-12 02:13:43,017 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-12 02:13:43,017 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-12 02:13:43,017 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-12 02:13:43,018 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-12 02:13:43,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:13:43,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:13:43,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:13:43,241 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:13:43,244 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:13:53,402 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:13:53,430 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:13:53,430 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-12 02:13:53,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:13:53 BoogieIcfgContainer [2023-11-12 02:13:53,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:13:53,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:13:53,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:13:53,443 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:13:53,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:13:37" (1/3) ... [2023-11-12 02:13:53,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f39ed9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:13:53, skipping insertion in model container [2023-11-12 02:13:53,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:41" (2/3) ... [2023-11-12 02:13:53,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f39ed9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:13:53, skipping insertion in model container [2023-11-12 02:13:53,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:13:53" (3/3) ... [2023-11-12 02:13:53,447 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.05.cil-1.c [2023-11-12 02:13:53,468 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:13:53,469 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:13:53,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:13:53,592 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;@54745352, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:13:53,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 02:13:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 2396 states, 2368 states have (on average 1.8505067567567568) internal successors, (4382), 2371 states have internal predecessors, (4382), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-12 02:13:53,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 02:13:53,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:53,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:53,628 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:53,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:53,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1103952823, now seen corresponding path program 1 times [2023-11-12 02:13:53,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:53,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056372944] [2023-11-12 02:13:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:53,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:54,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:13:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:54,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:13:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:54,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:13:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:54,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:13:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:54,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:13:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:54,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:54,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056372944] [2023-11-12 02:13:54,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056372944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:54,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:54,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:13:54,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984832196] [2023-11-12 02:13:54,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:54,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:13:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:13:54,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:13:54,359 INFO L87 Difference]: Start difference. First operand has 2396 states, 2368 states have (on average 1.8505067567567568) internal successors, (4382), 2371 states have internal predecessors, (4382), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:13:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:55,786 INFO L93 Difference]: Finished difference Result 4849 states and 8937 transitions. [2023-11-12 02:13:55,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:13:55,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-11-12 02:13:55,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:55,821 INFO L225 Difference]: With dead ends: 4849 [2023-11-12 02:13:55,821 INFO L226 Difference]: Without dead ends: 2394 [2023-11-12 02:13:55,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:13:55,836 INFO L413 NwaCegarLoop]: 4222 mSDtfsCounter, 517 mSDsluCounter, 12295 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 16517 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:55,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 16517 Invalid, 539 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 02:13:55,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2023-11-12 02:13:55,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 2329. [2023-11-12 02:13:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 2302 states have (on average 1.8388357949609035) internal successors, (4233), 2304 states have internal predecessors, (4233), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-12 02:13:56,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 4271 transitions. [2023-11-12 02:13:56,006 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 4271 transitions. Word has length 101 [2023-11-12 02:13:56,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:56,007 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 4271 transitions. [2023-11-12 02:13:56,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:13:56,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 4271 transitions. [2023-11-12 02:13:56,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 02:13:56,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:56,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:56,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:13:56,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:56,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:56,016 INFO L85 PathProgramCache]: Analyzing trace with hash -773110407, now seen corresponding path program 1 times [2023-11-12 02:13:56,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:56,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291638371] [2023-11-12 02:13:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:56,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:56,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:13:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:56,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:13:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:56,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:13:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:13:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:56,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:13:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:56,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:56,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291638371] [2023-11-12 02:13:56,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291638371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:56,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:56,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:13:56,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359829699] [2023-11-12 02:13:56,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:56,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:13:56,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:56,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:13:56,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:13:56,415 INFO L87 Difference]: Start difference. First operand 2329 states and 4271 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:13:58,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:13:58,516 INFO L93 Difference]: Finished difference Result 2853 states and 5090 transitions. [2023-11-12 02:13:58,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:13:58,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-11-12 02:13:58,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:13:58,536 INFO L225 Difference]: With dead ends: 2853 [2023-11-12 02:13:58,536 INFO L226 Difference]: Without dead ends: 2658 [2023-11-12 02:13:58,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:13:58,539 INFO L413 NwaCegarLoop]: 4137 mSDtfsCounter, 4719 mSDsluCounter, 12401 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4731 SdHoareTripleChecker+Valid, 16538 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:13:58,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4731 Valid, 16538 Invalid, 1169 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-12 02:13:58,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2023-11-12 02:13:58,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2529. [2023-11-12 02:13:58,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 2481 states have (on average 1.8170092704554615) internal successors, (4508), 2484 states have internal predecessors, (4508), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2023-11-12 02:13:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 4577 transitions. [2023-11-12 02:13:58,631 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 4577 transitions. Word has length 101 [2023-11-12 02:13:58,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:13:58,632 INFO L495 AbstractCegarLoop]: Abstraction has 2529 states and 4577 transitions. [2023-11-12 02:13:58,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:13:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 4577 transitions. [2023-11-12 02:13:58,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 02:13:58,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:13:58,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:58,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:13:58,635 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:13:58,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:58,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972285, now seen corresponding path program 1 times [2023-11-12 02:13:58,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:58,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942077216] [2023-11-12 02:13:58,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:58,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:58,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:13:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:58,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:13:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:58,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:13:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:58,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:13:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:58,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:13:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:58,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:58,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:58,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942077216] [2023-11-12 02:13:58,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942077216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:58,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:58,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:13:58,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563012108] [2023-11-12 02:13:58,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:58,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:13:58,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:58,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:13:58,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:13:58,860 INFO L87 Difference]: Start difference. First operand 2529 states and 4577 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:14:01,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:14:01,278 INFO L93 Difference]: Finished difference Result 3323 states and 5813 transitions. [2023-11-12 02:14:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:14:01,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-11-12 02:14:01,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:14:01,300 INFO L225 Difference]: With dead ends: 3323 [2023-11-12 02:14:01,300 INFO L226 Difference]: Without dead ends: 2928 [2023-11-12 02:14:01,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:14:01,311 INFO L413 NwaCegarLoop]: 4269 mSDtfsCounter, 4734 mSDsluCounter, 16862 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4746 SdHoareTripleChecker+Valid, 21131 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:14:01,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4746 Valid, 21131 Invalid, 1789 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-12 02:14:01,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2023-11-12 02:14:01,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2716. [2023-11-12 02:14:01,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2647 states have (on average 1.797128825085002) internal successors, (4757), 2651 states have internal predecessors, (4757), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-12 02:14:01,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 4856 transitions. [2023-11-12 02:14:01,427 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 4856 transitions. Word has length 101 [2023-11-12 02:14:01,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:14:01,429 INFO L495 AbstractCegarLoop]: Abstraction has 2716 states and 4856 transitions. [2023-11-12 02:14:01,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:14:01,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 4856 transitions. [2023-11-12 02:14:01,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 02:14:01,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:14:01,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:14:01,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:14:01,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:14:01,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:01,440 INFO L85 PathProgramCache]: Analyzing trace with hash -74158661, now seen corresponding path program 1 times [2023-11-12 02:14:01,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:01,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452517171] [2023-11-12 02:14:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:01,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:01,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:14:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:01,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:14:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:01,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:14:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:14:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:01,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:14:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:01,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:01,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452517171] [2023-11-12 02:14:01,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452517171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:01,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:01,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:14:01,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35096562] [2023-11-12 02:14:01,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:01,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:14:01,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:01,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:14:01,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:14:01,682 INFO L87 Difference]: Start difference. First operand 2716 states and 4856 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:14:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:14:04,031 INFO L93 Difference]: Finished difference Result 4014 states and 6872 transitions. [2023-11-12 02:14:04,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:14:04,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-11-12 02:14:04,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:14:04,055 INFO L225 Difference]: With dead ends: 4014 [2023-11-12 02:14:04,055 INFO L226 Difference]: Without dead ends: 3432 [2023-11-12 02:14:04,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:14:04,066 INFO L413 NwaCegarLoop]: 4267 mSDtfsCounter, 4728 mSDsluCounter, 16862 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4740 SdHoareTripleChecker+Valid, 21129 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:14:04,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4740 Valid, 21129 Invalid, 1770 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-12 02:14:04,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2023-11-12 02:14:04,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 3094. [2023-11-12 02:14:04,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 2983 states have (on average 1.763995977204157) internal successors, (5262), 2989 states have internal predecessors, (5262), 75 states have call successors, (75), 30 states have call predecessors, (75), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2023-11-12 02:14:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 5425 transitions. [2023-11-12 02:14:04,331 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 5425 transitions. Word has length 101 [2023-11-12 02:14:04,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:14:04,331 INFO L495 AbstractCegarLoop]: Abstraction has 3094 states and 5425 transitions. [2023-11-12 02:14:04,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:14:04,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 5425 transitions. [2023-11-12 02:14:04,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 02:14:04,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:14:04,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:14:04,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:14:04,334 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:14:04,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:04,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1492599289, now seen corresponding path program 1 times [2023-11-12 02:14:04,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:04,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018992967] [2023-11-12 02:14:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:04,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:04,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:14:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:04,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:14:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:04,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:14:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:04,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:14:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:04,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:14:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:04,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:04,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018992967] [2023-11-12 02:14:04,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018992967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:04,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:04,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:14:04,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753189645] [2023-11-12 02:14:04,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:04,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:14:04,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:04,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:14:04,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:14:04,577 INFO L87 Difference]: Start difference. First operand 3094 states and 5425 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:14:06,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:14:06,880 INFO L93 Difference]: Finished difference Result 5354 states and 8917 transitions. [2023-11-12 02:14:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:14:06,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-11-12 02:14:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:14:06,910 INFO L225 Difference]: With dead ends: 5354 [2023-11-12 02:14:06,911 INFO L226 Difference]: Without dead ends: 4394 [2023-11-12 02:14:06,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:14:06,917 INFO L413 NwaCegarLoop]: 4267 mSDtfsCounter, 4727 mSDsluCounter, 16862 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 21129 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:14:06,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4739 Valid, 21129 Invalid, 1757 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-12 02:14:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2023-11-12 02:14:07,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 3851. [2023-11-12 02:14:07,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3656 states have (on average 1.7155361050328228) internal successors, (6272), 3666 states have internal predecessors, (6272), 131 states have call successors, (131), 54 states have call predecessors, (131), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2023-11-12 02:14:07,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 6569 transitions. [2023-11-12 02:14:07,115 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 6569 transitions. Word has length 101 [2023-11-12 02:14:07,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:14:07,115 INFO L495 AbstractCegarLoop]: Abstraction has 3851 states and 6569 transitions. [2023-11-12 02:14:07,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:14:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 6569 transitions. [2023-11-12 02:14:07,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 02:14:07,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:14:07,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:14:07,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:14:07,119 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:14:07,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:07,120 INFO L85 PathProgramCache]: Analyzing trace with hash 434761211, now seen corresponding path program 1 times [2023-11-12 02:14:07,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:07,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357608046] [2023-11-12 02:14:07,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:07,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:07,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:14:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:14:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:07,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:14:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:07,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:14:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:07,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:14:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:07,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:07,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357608046] [2023-11-12 02:14:07,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357608046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:07,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:07,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:14:07,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095789967] [2023-11-12 02:14:07,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:07,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:14:07,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:07,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:14:07,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:14:07,322 INFO L87 Difference]: Start difference. First operand 3851 states and 6569 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:14:09,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:14:09,776 INFO L93 Difference]: Finished difference Result 8033 states and 13023 transitions. [2023-11-12 02:14:09,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:14:09,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-11-12 02:14:09,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:14:09,816 INFO L225 Difference]: With dead ends: 8033 [2023-11-12 02:14:09,816 INFO L226 Difference]: Without dead ends: 6316 [2023-11-12 02:14:09,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:14:09,824 INFO L413 NwaCegarLoop]: 4267 mSDtfsCounter, 4726 mSDsluCounter, 16862 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4738 SdHoareTripleChecker+Valid, 21129 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:14:09,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4738 Valid, 21129 Invalid, 1744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1695 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-12 02:14:09,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6316 states. [2023-11-12 02:14:10,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6316 to 5372. [2023-11-12 02:14:10,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5372 states, 5009 states have (on average 1.657416650029946) internal successors, (8302), 5027 states have internal predecessors, (8302), 243 states have call successors, (243), 102 states have call predecessors, (243), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2023-11-12 02:14:10,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 8885 transitions. [2023-11-12 02:14:10,092 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 8885 transitions. Word has length 101 [2023-11-12 02:14:10,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:14:10,092 INFO L495 AbstractCegarLoop]: Abstraction has 5372 states and 8885 transitions. [2023-11-12 02:14:10,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:14:10,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 8885 transitions. [2023-11-12 02:14:10,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 02:14:10,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:14:10,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:14:10,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:14:10,098 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:14:10,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:10,099 INFO L85 PathProgramCache]: Analyzing trace with hash -707741255, now seen corresponding path program 1 times [2023-11-12 02:14:10,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:10,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044934425] [2023-11-12 02:14:10,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:10,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:10,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:14:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:10,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:14:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:10,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:14:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:10,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:14:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:10,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:14:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:10,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:10,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044934425] [2023-11-12 02:14:10,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044934425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:10,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:10,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:14:10,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797977831] [2023-11-12 02:14:10,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:10,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:14:10,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:10,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:14:10,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:14:10,345 INFO L87 Difference]: Start difference. First operand 5372 states and 8885 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:14:12,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:14:12,639 INFO L93 Difference]: Finished difference Result 14656 states and 23187 transitions. [2023-11-12 02:14:12,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:14:12,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-11-12 02:14:12,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:14:12,690 INFO L225 Difference]: With dead ends: 14656 [2023-11-12 02:14:12,691 INFO L226 Difference]: Without dead ends: 11418 [2023-11-12 02:14:12,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:14:12,707 INFO L413 NwaCegarLoop]: 4149 mSDtfsCounter, 4988 mSDsluCounter, 16518 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5006 SdHoareTripleChecker+Valid, 20667 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:14:12,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5006 Valid, 20667 Invalid, 1517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-12 02:14:12,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11418 states. [2023-11-12 02:14:13,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11418 to 8381. [2023-11-12 02:14:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8381 states, 7698 states have (on average 1.6045726162639646) internal successors, (12352), 7732 states have internal predecessors, (12352), 451 states have call successors, (451), 198 states have call predecessors, (451), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2023-11-12 02:14:13,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8381 states to 8381 states and 13529 transitions. [2023-11-12 02:14:13,488 INFO L78 Accepts]: Start accepts. Automaton has 8381 states and 13529 transitions. Word has length 101 [2023-11-12 02:14:13,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:14:13,489 INFO L495 AbstractCegarLoop]: Abstraction has 8381 states and 13529 transitions. [2023-11-12 02:14:13,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:14:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 8381 states and 13529 transitions. [2023-11-12 02:14:13,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 02:14:13,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:14:13,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:14:13,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:14:13,508 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:14:13,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:13,509 INFO L85 PathProgramCache]: Analyzing trace with hash -467501509, now seen corresponding path program 1 times [2023-11-12 02:14:13,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:13,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038401930] [2023-11-12 02:14:13,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:13,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:14:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:13,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:14:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:13,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:14:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:13,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:14:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:13,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:14:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:13,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:13,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038401930] [2023-11-12 02:14:13,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038401930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:13,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:13,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:14:13,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133442286] [2023-11-12 02:14:13,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:13,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:14:13,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:13,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:14:13,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:14:13,732 INFO L87 Difference]: Start difference. First operand 8381 states and 13529 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:14:16,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:14:16,673 INFO L93 Difference]: Finished difference Result 26111 states and 41017 transitions. [2023-11-12 02:14:16,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:14:16,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-11-12 02:14:16,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:14:16,900 INFO L225 Difference]: With dead ends: 26111 [2023-11-12 02:14:16,900 INFO L226 Difference]: Without dead ends: 19864 [2023-11-12 02:14:16,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:14:16,927 INFO L413 NwaCegarLoop]: 4264 mSDtfsCounter, 4766 mSDsluCounter, 16851 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4777 SdHoareTripleChecker+Valid, 21115 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:14:16,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4777 Valid, 21115 Invalid, 2022 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-12 02:14:16,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19864 states. [2023-11-12 02:14:17,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19864 to 14222. [2023-11-12 02:14:17,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14222 states, 12915 states have (on average 1.564847077042199) internal successors, (20210), 12981 states have internal predecessors, (20210), 851 states have call successors, (851), 390 states have call predecessors, (851), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2023-11-12 02:14:17,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14222 states to 14222 states and 22705 transitions. [2023-11-12 02:14:17,737 INFO L78 Accepts]: Start accepts. Automaton has 14222 states and 22705 transitions. Word has length 101 [2023-11-12 02:14:17,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:14:17,737 INFO L495 AbstractCegarLoop]: Abstraction has 14222 states and 22705 transitions. [2023-11-12 02:14:17,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:14:17,738 INFO L276 IsEmpty]: Start isEmpty. Operand 14222 states and 22705 transitions. [2023-11-12 02:14:17,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 02:14:17,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:14:17,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:14:17,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:14:17,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:14:17,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:17,754 INFO L85 PathProgramCache]: Analyzing trace with hash 371532153, now seen corresponding path program 1 times [2023-11-12 02:14:17,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:17,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515697007] [2023-11-12 02:14:17,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:17,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:17,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:14:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:17,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-12 02:14:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:17,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:14:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:17,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-12 02:14:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:17,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-12 02:14:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:17,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:17,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515697007] [2023-11-12 02:14:17,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515697007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:17,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:17,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:14:17,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500157734] [2023-11-12 02:14:17,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:14:17,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:14:17,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:14:17,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:14:17,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:14:17,957 INFO L87 Difference]: Start difference. First operand 14222 states and 22705 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)