./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb3132a-57cb-4331-8b02-476fce425ea4/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb3132a-57cb-4331-8b02-476fce425ea4/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb3132a-57cb-4331-8b02-476fce425ea4/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb3132a-57cb-4331-8b02-476fce425ea4/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb3132a-57cb-4331-8b02-476fce425ea4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb3132a-57cb-4331-8b02-476fce425ea4/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d827a13f264a8106bf76fcdb72d7bd8ed8c070aef2487e4bd9a858009359b9d5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:49:20,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:49:20,955 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb3132a-57cb-4331-8b02-476fce425ea4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:49:20,965 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:49:20,969 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:49:21,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:49:21,012 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:49:21,013 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:49:21,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:49:21,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:49:21,025 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:49:21,026 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:49:21,027 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:49:21,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:49:21,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:49:21,030 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:49:21,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:49:21,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:49:21,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:49:21,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:49:21,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:49:21,033 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:49:21,034 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:49:21,034 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:49:21,035 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:49:21,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:49:21,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:49:21,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:49:21,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:49:21,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:49:21,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:49:21,041 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:49:21,041 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:49:21,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:49:21,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:49:21,042 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:49:21,042 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:49:21,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:49:21,043 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:49:21,044 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_ecb3132a-57cb-4331-8b02-476fce425ea4/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb3132a-57cb-4331-8b02-476fce425ea4/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d827a13f264a8106bf76fcdb72d7bd8ed8c070aef2487e4bd9a858009359b9d5 [2023-11-06 22:49:21,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:49:21,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:49:21,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:49:21,413 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:49:21,414 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:49:21,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb3132a-57cb-4331-8b02-476fce425ea4/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/systemc/token_ring.15.cil.c [2023-11-06 22:49:24,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:49:25,219 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:49:25,224 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb3132a-57cb-4331-8b02-476fce425ea4/sv-benchmarks/c/systemc/token_ring.15.cil.c [2023-11-06 22:49:25,246 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb3132a-57cb-4331-8b02-476fce425ea4/bin/uautomizer-verify-WvqO1wxjHP/data/acb4f9d3a/2e9b59b511d0402db9bab5368ad91917/FLAG3ef2daef4 [2023-11-06 22:49:25,265 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb3132a-57cb-4331-8b02-476fce425ea4/bin/uautomizer-verify-WvqO1wxjHP/data/acb4f9d3a/2e9b59b511d0402db9bab5368ad91917 [2023-11-06 22:49:25,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:49:25,270 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:49:25,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:49:25,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:49:25,279 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:49:25,280 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b6786e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25, skipping insertion in model container [2023-11-06 22:49:25,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,383 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:49:25,612 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_ecb3132a-57cb-4331-8b02-476fce425ea4/sv-benchmarks/c/systemc/token_ring.15.cil.c[669,682] [2023-11-06 22:49:25,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:49:25,801 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:49:25,813 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_ecb3132a-57cb-4331-8b02-476fce425ea4/sv-benchmarks/c/systemc/token_ring.15.cil.c[669,682] [2023-11-06 22:49:25,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:49:25,956 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:49:25,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25 WrapperNode [2023-11-06 22:49:25,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:49:25,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:49:25,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:49:25,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:49:25,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:25,996 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:26,076 INFO L138 Inliner]: procedures = 54, calls = 71, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 943 [2023-11-06 22:49:26,076 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:49:26,077 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:49:26,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:49:26,078 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:49:26,090 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:26,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:26,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:26,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:26,119 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:26,136 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:26,140 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:26,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:26,153 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:49:26,154 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:49:26,155 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:49:26,155 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:49:26,156 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (1/1) ... [2023-11-06 22:49:26,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:49:26,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb3132a-57cb-4331-8b02-476fce425ea4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:26,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb3132a-57cb-4331-8b02-476fce425ea4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:26,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb3132a-57cb-4331-8b02-476fce425ea4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:49:26,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:49:26,247 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-06 22:49:26,247 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-06 22:49:26,247 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-06 22:49:26,248 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-06 22:49:26,248 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-06 22:49:26,248 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-06 22:49:26,248 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-06 22:49:26,248 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-06 22:49:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-06 22:49:26,249 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-06 22:49:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-06 22:49:26,249 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-06 22:49:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-06 22:49:26,250 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-06 22:49:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:49:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:49:26,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:49:26,390 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:49:26,392 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:49:27,380 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:49:27,398 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:49:27,398 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-06 22:49:27,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:27 BoogieIcfgContainer [2023-11-06 22:49:27,403 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:49:27,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:49:27,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:49:27,413 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:49:27,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:49:25" (1/3) ... [2023-11-06 22:49:27,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb822bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:27, skipping insertion in model container [2023-11-06 22:49:27,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:25" (2/3) ... [2023-11-06 22:49:27,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb822bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:27, skipping insertion in model container [2023-11-06 22:49:27,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:27" (3/3) ... [2023-11-06 22:49:27,419 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.15.cil.c [2023-11-06 22:49:27,446 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:49:27,446 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:49:27,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:49:27,569 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e3edc02, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:49:27,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:49:27,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 427 states, 389 states have (on average 1.6452442159383034) internal successors, (640), 393 states have internal predecessors, (640), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-06 22:49:27,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:49:27,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:27,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:27,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:27,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:27,640 INFO L85 PathProgramCache]: Analyzing trace with hash -821044490, now seen corresponding path program 1 times [2023-11-06 22:49:27,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:27,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619821788] [2023-11-06 22:49:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:27,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:28,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:49:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:28,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:49:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:49:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:28,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-06 22:49:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:28,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-06 22:49:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:28,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:28,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619821788] [2023-11-06 22:49:28,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619821788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:28,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:28,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:49:28,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879671074] [2023-11-06 22:49:28,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:28,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:49:28,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:28,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:49:28,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:28,711 INFO L87 Difference]: Start difference. First operand has 427 states, 389 states have (on average 1.6452442159383034) internal successors, (640), 393 states have internal predecessors, (640), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:32,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:32,721 INFO L93 Difference]: Finished difference Result 993 states and 1639 transitions. [2023-11-06 22:49:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:49:32,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2023-11-06 22:49:32,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:32,753 INFO L225 Difference]: With dead ends: 993 [2023-11-06 22:49:32,753 INFO L226 Difference]: Without dead ends: 574 [2023-11-06 22:49:32,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:49:32,766 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 1131 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:32,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 851 Invalid, 1176 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-06 22:49:32,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-11-06 22:49:32,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 421. [2023-11-06 22:49:33,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 385 states have (on average 1.561038961038961) internal successors, (601), 387 states have internal predecessors, (601), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-06 22:49:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 657 transitions. [2023-11-06 22:49:33,009 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 657 transitions. Word has length 189 [2023-11-06 22:49:33,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:33,012 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 657 transitions. [2023-11-06 22:49:33,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:33,014 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 657 transitions. [2023-11-06 22:49:33,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:49:33,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:33,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:33,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:49:33,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:33,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1426819272, now seen corresponding path program 1 times [2023-11-06 22:49:33,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:33,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43135852] [2023-11-06 22:49:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:33,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:33,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:49:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:33,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:49:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:33,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:49:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:33,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-06 22:49:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:33,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-06 22:49:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:33,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:33,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43135852] [2023-11-06 22:49:33,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43135852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:33,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:33,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:49:33,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700923022] [2023-11-06 22:49:33,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:33,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:49:33,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:33,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:49:33,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:49:33,617 INFO L87 Difference]: Start difference. First operand 421 states and 657 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:39,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:39,776 INFO L93 Difference]: Finished difference Result 1547 states and 2468 transitions. [2023-11-06 22:49:39,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:49:39,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2023-11-06 22:49:39,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:39,789 INFO L225 Difference]: With dead ends: 1547 [2023-11-06 22:49:39,789 INFO L226 Difference]: Without dead ends: 1147 [2023-11-06 22:49:39,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:49:39,794 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1702 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 2438 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:39,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1722 Valid, 1439 Invalid, 2558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2438 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-06 22:49:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2023-11-06 22:49:40,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 840. [2023-11-06 22:49:40,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 775 states have (on average 1.5716129032258064) internal successors, (1218), 778 states have internal predecessors, (1218), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2023-11-06 22:49:40,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1321 transitions. [2023-11-06 22:49:40,016 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1321 transitions. Word has length 189 [2023-11-06 22:49:40,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:40,017 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1321 transitions. [2023-11-06 22:49:40,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:40,018 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1321 transitions. [2023-11-06 22:49:40,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:49:40,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:40,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:40,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:49:40,023 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:40,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:40,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1021121588, now seen corresponding path program 1 times [2023-11-06 22:49:40,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:40,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866833053] [2023-11-06 22:49:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:40,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:40,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:49:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:40,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:49:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:40,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:49:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:40,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-06 22:49:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:40,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-06 22:49:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:40,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:40,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866833053] [2023-11-06 22:49:40,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866833053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:40,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:40,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:49:40,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599310507] [2023-11-06 22:49:40,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:40,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:40,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:40,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:40,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:40,623 INFO L87 Difference]: Start difference. First operand 840 states and 1321 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:48,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:48,363 INFO L93 Difference]: Finished difference Result 2559 states and 4091 transitions. [2023-11-06 22:49:48,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:49:48,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2023-11-06 22:49:48,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:48,381 INFO L225 Difference]: With dead ends: 2559 [2023-11-06 22:49:48,381 INFO L226 Difference]: Without dead ends: 1740 [2023-11-06 22:49:48,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:49:48,387 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 1747 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 3861 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 3928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:48,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1767 Valid, 2802 Invalid, 3928 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3861 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-06 22:49:48,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2023-11-06 22:49:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1230. [2023-11-06 22:49:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1136 states have (on average 1.5642605633802817) internal successors, (1777), 1140 states have internal predecessors, (1777), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-11-06 22:49:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1926 transitions. [2023-11-06 22:49:48,686 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1926 transitions. Word has length 189 [2023-11-06 22:49:48,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:48,687 INFO L495 AbstractCegarLoop]: Abstraction has 1230 states and 1926 transitions. [2023-11-06 22:49:48,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1926 transitions. [2023-11-06 22:49:48,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:49:48,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:48,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:48,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:49:48,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:48,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:48,694 INFO L85 PathProgramCache]: Analyzing trace with hash -902128842, now seen corresponding path program 1 times [2023-11-06 22:49:48,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:48,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056701776] [2023-11-06 22:49:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:48,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:48,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:49:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:49,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:49:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:49,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:49:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-06 22:49:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:49,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-06 22:49:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:49,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:49,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056701776] [2023-11-06 22:49:49,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056701776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:49,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:49,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:49:49,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205770616] [2023-11-06 22:49:49,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:49,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:49,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:49,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:49,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:49,295 INFO L87 Difference]: Start difference. First operand 1230 states and 1926 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:56,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:56,768 INFO L93 Difference]: Finished difference Result 4051 states and 6464 transitions. [2023-11-06 22:49:56,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:49:56,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2023-11-06 22:49:56,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:56,789 INFO L225 Difference]: With dead ends: 4051 [2023-11-06 22:49:56,790 INFO L226 Difference]: Without dead ends: 2842 [2023-11-06 22:49:56,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:49:56,796 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 1741 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 3840 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 3909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:56,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 2800 Invalid, 3909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3840 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-06 22:49:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2023-11-06 22:49:57,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2014. [2023-11-06 22:49:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2014 states, 1862 states have (on average 1.5585392051557465) internal successors, (2902), 1868 states have internal predecessors, (2902), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-11-06 22:49:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 3147 transitions. [2023-11-06 22:49:57,132 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 3147 transitions. Word has length 189 [2023-11-06 22:49:57,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:57,134 INFO L495 AbstractCegarLoop]: Abstraction has 2014 states and 3147 transitions. [2023-11-06 22:49:57,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:49:57,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 3147 transitions. [2023-11-06 22:49:57,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:49:57,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:57,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:57,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:49:57,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:57,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:57,141 INFO L85 PathProgramCache]: Analyzing trace with hash -403572040, now seen corresponding path program 1 times [2023-11-06 22:49:57,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:57,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711691232] [2023-11-06 22:49:57,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:57,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:57,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:49:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:57,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:49:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:57,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:49:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:57,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-06 22:49:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-06 22:49:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:57,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:57,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711691232] [2023-11-06 22:49:57,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711691232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:57,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:57,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:49:57,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472073077] [2023-11-06 22:49:57,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:57,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:57,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:57,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:57,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:57,675 INFO L87 Difference]: Start difference. First operand 2014 states and 3147 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:04,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:04,753 INFO L93 Difference]: Finished difference Result 6929 states and 11009 transitions. [2023-11-06 22:50:04,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:50:04,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2023-11-06 22:50:04,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:04,788 INFO L225 Difference]: With dead ends: 6929 [2023-11-06 22:50:04,788 INFO L226 Difference]: Without dead ends: 4936 [2023-11-06 22:50:04,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:50:04,797 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 1740 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 3827 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 3896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:04,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 2800 Invalid, 3896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3827 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-06 22:50:04,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4936 states. [2023-11-06 22:50:05,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4936 to 3583. [2023-11-06 22:50:05,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3315 states have (on average 1.5541478129713424) internal successors, (5152), 3325 states have internal predecessors, (5152), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2023-11-06 22:50:05,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 5595 transitions. [2023-11-06 22:50:05,484 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 5595 transitions. Word has length 189 [2023-11-06 22:50:05,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:05,485 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 5595 transitions. [2023-11-06 22:50:05,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 5595 transitions. [2023-11-06 22:50:05,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:50:05,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:05,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:05,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:50:05,491 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:05,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:05,491 INFO L85 PathProgramCache]: Analyzing trace with hash 166699766, now seen corresponding path program 1 times [2023-11-06 22:50:05,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:05,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487288757] [2023-11-06 22:50:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:05,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:05,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:50:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:05,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:50:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:05,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:50:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-06 22:50:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:05,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-06 22:50:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:05,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487288757] [2023-11-06 22:50:05,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487288757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:05,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:05,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:50:05,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476277055] [2023-11-06 22:50:05,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:05,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:50:05,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:05,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:50:05,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:50:05,942 INFO L87 Difference]: Start difference. First operand 3583 states and 5595 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:13,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:13,469 INFO L93 Difference]: Finished difference Result 12684 states and 20115 transitions. [2023-11-06 22:50:13,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:50:13,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2023-11-06 22:50:13,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:13,535 INFO L225 Difference]: With dead ends: 12684 [2023-11-06 22:50:13,536 INFO L226 Difference]: Without dead ends: 9122 [2023-11-06 22:50:13,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:50:13,553 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 1739 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 3814 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 3883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:13,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 2800 Invalid, 3883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3814 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-06 22:50:13,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9122 states. [2023-11-06 22:50:14,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9122 to 6728. [2023-11-06 22:50:14,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6728 states, 6228 states have (on average 1.5513808606294155) internal successors, (9662), 6246 states have internal predecessors, (9662), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-11-06 22:50:14,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6728 states to 6728 states and 10519 transitions. [2023-11-06 22:50:14,839 INFO L78 Accepts]: Start accepts. Automaton has 6728 states and 10519 transitions. Word has length 189 [2023-11-06 22:50:14,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:14,839 INFO L495 AbstractCegarLoop]: Abstraction has 6728 states and 10519 transitions. [2023-11-06 22:50:14,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:14,840 INFO L276 IsEmpty]: Start isEmpty. Operand 6728 states and 10519 transitions. [2023-11-06 22:50:14,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:50:14,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:14,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:14,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:50:14,849 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:14,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:14,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1570568952, now seen corresponding path program 1 times [2023-11-06 22:50:14,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:14,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635724883] [2023-11-06 22:50:14,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:14,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:14,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:50:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:15,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:50:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:15,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:50:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:15,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-06 22:50:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:15,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-06 22:50:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:15,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:15,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635724883] [2023-11-06 22:50:15,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635724883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:15,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:15,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:50:15,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925790491] [2023-11-06 22:50:15,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:15,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:50:15,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:15,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:50:15,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:50:15,292 INFO L87 Difference]: Start difference. First operand 6728 states and 10519 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:24,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:24,221 INFO L93 Difference]: Finished difference Result 24195 states and 38389 transitions. [2023-11-06 22:50:24,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:50:24,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2023-11-06 22:50:24,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:24,360 INFO L225 Difference]: With dead ends: 24195 [2023-11-06 22:50:24,361 INFO L226 Difference]: Without dead ends: 17488 [2023-11-06 22:50:24,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:50:24,400 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1852 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 3249 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:24,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 1777 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3249 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-06 22:50:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17488 states. [2023-11-06 22:50:26,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17488 to 13033. [2023-11-06 22:50:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13033 states, 12069 states have (on average 1.5497555721269367) internal successors, (18704), 12103 states have internal predecessors, (18704), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2023-11-06 22:50:26,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13033 states to 13033 states and 20443 transitions. [2023-11-06 22:50:26,877 INFO L78 Accepts]: Start accepts. Automaton has 13033 states and 20443 transitions. Word has length 189 [2023-11-06 22:50:26,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:26,878 INFO L495 AbstractCegarLoop]: Abstraction has 13033 states and 20443 transitions. [2023-11-06 22:50:26,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:26,879 INFO L276 IsEmpty]: Start isEmpty. Operand 13033 states and 20443 transitions. [2023-11-06 22:50:26,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:50:26,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:26,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:26,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:50:26,892 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:26,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:26,893 INFO L85 PathProgramCache]: Analyzing trace with hash 784571062, now seen corresponding path program 1 times [2023-11-06 22:50:26,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:26,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689889909] [2023-11-06 22:50:26,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:26,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:50:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:27,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:50:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:27,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:50:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:27,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-06 22:50:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:27,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-06 22:50:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:27,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:27,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:27,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689889909] [2023-11-06 22:50:27,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689889909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:27,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:27,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:50:27,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144863012] [2023-11-06 22:50:27,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:27,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:50:27,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:27,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:50:27,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:50:27,315 INFO L87 Difference]: Start difference. First operand 13033 states and 20443 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:39,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:39,756 INFO L93 Difference]: Finished difference Result 47218 states and 75131 transitions. [2023-11-06 22:50:39,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:50:39,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2023-11-06 22:50:39,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:39,942 INFO L225 Difference]: With dead ends: 47218 [2023-11-06 22:50:39,943 INFO L226 Difference]: Without dead ends: 34206 [2023-11-06 22:50:40,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:50:40,017 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 1737 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 3788 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1757 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 3857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:40,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1757 Valid, 2800 Invalid, 3857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3788 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-06 22:50:40,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34206 states. [2023-11-06 22:50:43,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34206 to 25674. [2023-11-06 22:50:43,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25674 states, 23782 states have (on average 1.548818434109831) internal successors, (36834), 23848 states have internal predecessors, (36834), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2023-11-06 22:50:43,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25674 states to 25674 states and 40499 transitions. [2023-11-06 22:50:43,999 INFO L78 Accepts]: Start accepts. Automaton has 25674 states and 40499 transitions. Word has length 189 [2023-11-06 22:50:44,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:44,000 INFO L495 AbstractCegarLoop]: Abstraction has 25674 states and 40499 transitions. [2023-11-06 22:50:44,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:50:44,000 INFO L276 IsEmpty]: Start isEmpty. Operand 25674 states and 40499 transitions. [2023-11-06 22:50:44,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:50:44,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:44,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:44,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:50:44,025 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:44,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:44,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1451952952, now seen corresponding path program 1 times [2023-11-06 22:50:44,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:44,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051826129] [2023-11-06 22:50:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:44,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:44,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:50:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:50:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:44,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:50:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:44,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-06 22:50:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:44,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-06 22:50:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:44,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:44,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:44,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051826129] [2023-11-06 22:50:44,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051826129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:44,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:44,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:50:44,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549570388] [2023-11-06 22:50:44,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:44,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:50:44,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:44,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:50:44,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:50:44,415 INFO L87 Difference]: Start difference. First operand 25674 states and 40499 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:51:03,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:51:03,674 INFO L93 Difference]: Finished difference Result 93265 states and 149217 transitions. [2023-11-06 22:51:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:51:03,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2023-11-06 22:51:03,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:51:03,968 INFO L225 Difference]: With dead ends: 93265 [2023-11-06 22:51:03,968 INFO L226 Difference]: Without dead ends: 67612 [2023-11-06 22:51:04,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:51:04,056 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 1736 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 3775 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 3844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:51:04,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 2800 Invalid, 3844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3775 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-06 22:51:04,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67612 states. [2023-11-06 22:51:12,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67612 to 51019. [2023-11-06 22:51:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51019 states, 47271 states have (on average 1.5482642635019357) internal successors, (73188), 47401 states have internal predecessors, (73188), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2023-11-06 22:51:12,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51019 states to 51019 states and 81191 transitions. [2023-11-06 22:51:12,455 INFO L78 Accepts]: Start accepts. Automaton has 51019 states and 81191 transitions. Word has length 189 [2023-11-06 22:51:12,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:51:12,455 INFO L495 AbstractCegarLoop]: Abstraction has 51019 states and 81191 transitions. [2023-11-06 22:51:12,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:51:12,456 INFO L276 IsEmpty]: Start isEmpty. Operand 51019 states and 81191 transitions. [2023-11-06 22:51:12,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:51:12,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:51:12,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:12,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:51:12,496 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:51:12,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:12,497 INFO L85 PathProgramCache]: Analyzing trace with hash -743275914, now seen corresponding path program 1 times [2023-11-06 22:51:12,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:12,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99621622] [2023-11-06 22:51:12,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:12,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:12,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:51:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:12,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:51:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:12,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:51:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:12,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-06 22:51:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:12,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-06 22:51:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:12,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:12,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99621622] [2023-11-06 22:51:12,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99621622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:12,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:12,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:51:12,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641687253] [2023-11-06 22:51:12,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:12,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:51:12,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:12,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:51:12,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:51:12,886 INFO L87 Difference]: Start difference. First operand 51019 states and 81191 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)