./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.02.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.02.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2cbfaf31aa56f767af01fea9a12ccb47d60ab19076d72b85e8ca46d6ff778e4c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:03:05,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:03:05,867 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:03:05,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:03:05,874 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:03:05,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:03:05,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:03:05,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:03:05,935 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:03:05,940 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:03:05,941 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:03:05,941 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:03:05,942 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:03:05,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:03:05,944 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:03:05,944 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:03:05,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:03:05,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:03:05,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:03:05,946 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:03:05,947 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:03:05,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:03:05,948 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:03:05,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:03:05,950 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:03:05,951 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:03:05,951 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:03:05,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:03:05,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:05,965 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:03:05,966 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:03:05,966 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:03:05,967 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:03:05,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:03:05,967 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:03:05,967 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:03:05,968 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:03:05,968 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:03:05,968 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:03:05,968 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_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cbfaf31aa56f767af01fea9a12ccb47d60ab19076d72b85e8ca46d6ff778e4c [2023-11-19 08:03:06,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:03:06,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:03:06,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:03:06,283 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:03:06,283 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:03:06,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/systemc/transmitter.02.cil.c [2023-11-19 08:03:09,355 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:03:09,594 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:03:09,594 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/sv-benchmarks/c/systemc/transmitter.02.cil.c [2023-11-19 08:03:09,605 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/data/fd23a8bdc/2944311f97574feeb44cedc545a7e59e/FLAG44634088c [2023-11-19 08:03:09,619 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/data/fd23a8bdc/2944311f97574feeb44cedc545a7e59e [2023-11-19 08:03:09,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:03:09,623 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:03:09,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:09,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:03:09,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:03:09,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:09" (1/1) ... [2023-11-19 08:03:09,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@161513e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:09, skipping insertion in model container [2023-11-19 08:03:09,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:09" (1/1) ... [2023-11-19 08:03:09,686 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:03:09,842 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_90d46e3d-f163-4c7b-8924-5e725c70177d/sv-benchmarks/c/systemc/transmitter.02.cil.c[706,719] [2023-11-19 08:03:09,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:09,931 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:03:09,949 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_90d46e3d-f163-4c7b-8924-5e725c70177d/sv-benchmarks/c/systemc/transmitter.02.cil.c[706,719] [2023-11-19 08:03:10,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:10,023 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:03:10,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:10 WrapperNode [2023-11-19 08:03:10,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:10,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:10,029 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:03:10,029 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:03:10,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:10" (1/1) ... [2023-11-19 08:03:10,058 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:10" (1/1) ... [2023-11-19 08:03:10,104 INFO L138 Inliner]: procedures = 32, calls = 36, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 269 [2023-11-19 08:03:10,105 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:10,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:03:10,106 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:03:10,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:03:10,116 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:10" (1/1) ... [2023-11-19 08:03:10,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:10" (1/1) ... [2023-11-19 08:03:10,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:10" (1/1) ... [2023-11-19 08:03:10,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:10" (1/1) ... [2023-11-19 08:03:10,140 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:10" (1/1) ... [2023-11-19 08:03:10,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:10" (1/1) ... [2023-11-19 08:03:10,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:10" (1/1) ... [2023-11-19 08:03:10,166 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:10" (1/1) ... [2023-11-19 08:03:10,169 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:03:10,173 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:03:10,174 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:03:10,174 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:03:10,175 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:10" (1/1) ... [2023-11-19 08:03:10,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:10,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:10,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:03:10,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:03:10,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:03:10,258 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-19 08:03:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-19 08:03:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-19 08:03:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-19 08:03:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-19 08:03:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-19 08:03:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-19 08:03:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-19 08:03:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-19 08:03:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-19 08:03:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:03:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-19 08:03:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-19 08:03:10,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:03:10,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:03:10,424 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:03:10,426 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:03:10,801 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:03:10,820 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:03:10,821 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 08:03:10,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:10 BoogieIcfgContainer [2023-11-19 08:03:10,829 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:03:10,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:03:10,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:03:10,838 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:03:10,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:03:09" (1/3) ... [2023-11-19 08:03:10,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2509dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:10, skipping insertion in model container [2023-11-19 08:03:10,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:10" (2/3) ... [2023-11-19 08:03:10,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2509dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:10, skipping insertion in model container [2023-11-19 08:03:10,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:10" (3/3) ... [2023-11-19 08:03:10,844 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2023-11-19 08:03:10,868 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:03:10,868 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:03:10,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:03:10,932 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ca74ada, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:03:10,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:03:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 108 states have (on average 1.5462962962962963) internal successors, (167), 110 states have internal predecessors, (167), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 08:03:10,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 08:03:10,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:10,949 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] [2023-11-19 08:03:10,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:10,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:10,954 INFO L85 PathProgramCache]: Analyzing trace with hash -806611058, now seen corresponding path program 1 times [2023-11-19 08:03:10,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:10,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380213109] [2023-11-19 08:03:10,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:10,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:11,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:11,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:11,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:11,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:11,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:11,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:11,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380213109] [2023-11-19 08:03:11,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380213109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:11,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:11,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:03:11,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210770793] [2023-11-19 08:03:11,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:11,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:03:11,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:03:11,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:11,558 INFO L87 Difference]: Start difference. First operand has 131 states, 108 states have (on average 1.5462962962962963) internal successors, (167), 110 states have internal predecessors, (167), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:12,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:12,255 INFO L93 Difference]: Finished difference Result 283 states and 431 transitions. [2023-11-19 08:03:12,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:03:12,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-19 08:03:12,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:12,271 INFO L225 Difference]: With dead ends: 283 [2023-11-19 08:03:12,271 INFO L226 Difference]: Without dead ends: 156 [2023-11-19 08:03:12,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:03:12,280 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 275 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:12,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 265 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 08:03:12,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-19 08:03:12,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 126. [2023-11-19 08:03:12,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 104 states have (on average 1.4230769230769231) internal successors, (148), 105 states have internal predecessors, (148), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 08:03:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 178 transitions. [2023-11-19 08:03:12,382 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 178 transitions. Word has length 67 [2023-11-19 08:03:12,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:12,384 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 178 transitions. [2023-11-19 08:03:12,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:12,384 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 178 transitions. [2023-11-19 08:03:12,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 08:03:12,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:12,392 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] [2023-11-19 08:03:12,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:03:12,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:12,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:12,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1240340144, now seen corresponding path program 1 times [2023-11-19 08:03:12,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:12,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300090209] [2023-11-19 08:03:12,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:12,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:12,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:12,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:12,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:12,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:12,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300090209] [2023-11-19 08:03:12,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300090209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:12,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:12,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:03:12,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591953035] [2023-11-19 08:03:12,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:12,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:03:12,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:12,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:03:12,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:12,653 INFO L87 Difference]: Start difference. First operand 126 states and 178 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:13,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:13,470 INFO L93 Difference]: Finished difference Result 415 states and 606 transitions. [2023-11-19 08:03:13,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:03:13,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-19 08:03:13,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:13,481 INFO L225 Difference]: With dead ends: 415 [2023-11-19 08:03:13,481 INFO L226 Difference]: Without dead ends: 299 [2023-11-19 08:03:13,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:03:13,493 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 388 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:13,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 429 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 08:03:13,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-19 08:03:13,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 239. [2023-11-19 08:03:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 200 states have (on average 1.43) internal successors, (286), 202 states have internal predecessors, (286), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2023-11-19 08:03:13,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 339 transitions. [2023-11-19 08:03:13,564 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 339 transitions. Word has length 67 [2023-11-19 08:03:13,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:13,565 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 339 transitions. [2023-11-19 08:03:13,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:13,566 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 339 transitions. [2023-11-19 08:03:13,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 08:03:13,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:13,573 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] [2023-11-19 08:03:13,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:03:13,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:13,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1099519889, now seen corresponding path program 1 times [2023-11-19 08:03:13,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:13,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301490547] [2023-11-19 08:03:13,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:13,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:13,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:13,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:13,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301490547] [2023-11-19 08:03:13,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301490547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:13,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:13,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:03:13,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607316300] [2023-11-19 08:03:13,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:13,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:03:13,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:13,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:03:13,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:13,867 INFO L87 Difference]: Start difference. First operand 239 states and 339 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:14,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:14,365 INFO L93 Difference]: Finished difference Result 528 states and 762 transitions. [2023-11-19 08:03:14,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:03:14,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-19 08:03:14,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:14,369 INFO L225 Difference]: With dead ends: 528 [2023-11-19 08:03:14,370 INFO L226 Difference]: Without dead ends: 299 [2023-11-19 08:03:14,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:03:14,372 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 341 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:14,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 325 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:03:14,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-19 08:03:14,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 239. [2023-11-19 08:03:14,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 200 states have (on average 1.42) internal successors, (284), 202 states have internal predecessors, (284), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2023-11-19 08:03:14,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 337 transitions. [2023-11-19 08:03:14,404 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 337 transitions. Word has length 67 [2023-11-19 08:03:14,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:14,405 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 337 transitions. [2023-11-19 08:03:14,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:14,405 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 337 transitions. [2023-11-19 08:03:14,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 08:03:14,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:14,407 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] [2023-11-19 08:03:14,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:03:14,407 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:14,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:14,408 INFO L85 PathProgramCache]: Analyzing trace with hash -223500883, now seen corresponding path program 1 times [2023-11-19 08:03:14,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:14,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082943917] [2023-11-19 08:03:14,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:14,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:14,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:14,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:14,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:14,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:14,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:14,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082943917] [2023-11-19 08:03:14,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082943917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:14,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:14,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:03:14,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615034056] [2023-11-19 08:03:14,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:14,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:03:14,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:14,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:03:14,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:14,574 INFO L87 Difference]: Start difference. First operand 239 states and 337 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:15,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:15,786 INFO L93 Difference]: Finished difference Result 704 states and 1001 transitions. [2023-11-19 08:03:15,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 08:03:15,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-19 08:03:15,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:15,791 INFO L225 Difference]: With dead ends: 704 [2023-11-19 08:03:15,791 INFO L226 Difference]: Without dead ends: 475 [2023-11-19 08:03:15,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:03:15,793 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 404 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:15,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 800 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 08:03:15,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-11-19 08:03:15,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 346. [2023-11-19 08:03:15,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 290 states have (on average 1.410344827586207) internal successors, (409), 293 states have internal predecessors, (409), 35 states have call successors, (35), 18 states have call predecessors, (35), 20 states have return successors, (40), 36 states have call predecessors, (40), 35 states have call successors, (40) [2023-11-19 08:03:15,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 484 transitions. [2023-11-19 08:03:15,849 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 484 transitions. Word has length 67 [2023-11-19 08:03:15,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:15,851 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 484 transitions. [2023-11-19 08:03:15,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:15,851 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 484 transitions. [2023-11-19 08:03:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 08:03:15,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:15,854 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] [2023-11-19 08:03:15,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:03:15,854 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:15,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:15,855 INFO L85 PathProgramCache]: Analyzing trace with hash 220399791, now seen corresponding path program 1 times [2023-11-19 08:03:15,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:15,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912555805] [2023-11-19 08:03:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:15,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:15,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:15,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:16,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:16,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:16,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:16,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:16,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912555805] [2023-11-19 08:03:16,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912555805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:16,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:16,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:03:16,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318597400] [2023-11-19 08:03:16,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:16,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:03:16,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:16,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:03:16,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:16,041 INFO L87 Difference]: Start difference. First operand 346 states and 484 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:17,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:17,181 INFO L93 Difference]: Finished difference Result 1098 states and 1548 transitions. [2023-11-19 08:03:17,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 08:03:17,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-19 08:03:17,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:17,187 INFO L225 Difference]: With dead ends: 1098 [2023-11-19 08:03:17,187 INFO L226 Difference]: Without dead ends: 762 [2023-11-19 08:03:17,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-11-19 08:03:17,190 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 413 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:17,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 784 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 08:03:17,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-11-19 08:03:17,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 559. [2023-11-19 08:03:17,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 471 states have (on average 1.4097664543524415) internal successors, (664), 476 states have internal predecessors, (664), 53 states have call successors, (53), 30 states have call predecessors, (53), 34 states have return successors, (66), 56 states have call predecessors, (66), 53 states have call successors, (66) [2023-11-19 08:03:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 783 transitions. [2023-11-19 08:03:17,243 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 783 transitions. Word has length 67 [2023-11-19 08:03:17,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:17,243 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 783 transitions. [2023-11-19 08:03:17,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:17,244 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 783 transitions. [2023-11-19 08:03:17,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 08:03:17,245 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:17,246 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] [2023-11-19 08:03:17,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:03:17,246 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:17,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:17,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1808186319, now seen corresponding path program 1 times [2023-11-19 08:03:17,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:17,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846955978] [2023-11-19 08:03:17,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:17,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:17,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:17,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:17,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:17,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:17,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:17,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:17,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846955978] [2023-11-19 08:03:17,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846955978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:17,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:17,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:03:17,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518332780] [2023-11-19 08:03:17,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:17,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:03:17,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:17,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:03:17,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:17,388 INFO L87 Difference]: Start difference. First operand 559 states and 783 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:18,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:18,080 INFO L93 Difference]: Finished difference Result 1233 states and 1757 transitions. [2023-11-19 08:03:18,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:03:18,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-19 08:03:18,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:18,087 INFO L225 Difference]: With dead ends: 1233 [2023-11-19 08:03:18,087 INFO L226 Difference]: Without dead ends: 685 [2023-11-19 08:03:18,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:03:18,093 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 236 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:18,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 550 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:03:18,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-11-19 08:03:18,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 562. [2023-11-19 08:03:18,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 474 states have (on average 1.3987341772151898) internal successors, (663), 479 states have internal predecessors, (663), 53 states have call successors, (53), 30 states have call predecessors, (53), 34 states have return successors, (66), 56 states have call predecessors, (66), 53 states have call successors, (66) [2023-11-19 08:03:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 782 transitions. [2023-11-19 08:03:18,154 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 782 transitions. Word has length 67 [2023-11-19 08:03:18,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:18,155 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 782 transitions. [2023-11-19 08:03:18,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:18,155 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 782 transitions. [2023-11-19 08:03:18,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 08:03:18,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:18,157 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] [2023-11-19 08:03:18,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:03:18,157 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:18,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:18,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1560039825, now seen corresponding path program 1 times [2023-11-19 08:03:18,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:18,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785750997] [2023-11-19 08:03:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:18,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:18,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:18,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:18,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785750997] [2023-11-19 08:03:18,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785750997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:18,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:18,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:03:18,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277925662] [2023-11-19 08:03:18,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:18,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:03:18,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:18,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:03:18,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:18,308 INFO L87 Difference]: Start difference. First operand 562 states and 782 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:18,978 INFO L93 Difference]: Finished difference Result 1299 states and 1844 transitions. [2023-11-19 08:03:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:03:18,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-19 08:03:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:18,984 INFO L225 Difference]: With dead ends: 1299 [2023-11-19 08:03:18,985 INFO L226 Difference]: Without dead ends: 748 [2023-11-19 08:03:18,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:03:18,988 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 234 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:18,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 547 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:03:18,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-11-19 08:03:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 577. [2023-11-19 08:03:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 489 states have (on average 1.3865030674846626) internal successors, (678), 494 states have internal predecessors, (678), 53 states have call successors, (53), 30 states have call predecessors, (53), 34 states have return successors, (66), 56 states have call predecessors, (66), 53 states have call successors, (66) [2023-11-19 08:03:19,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 797 transitions. [2023-11-19 08:03:19,040 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 797 transitions. Word has length 67 [2023-11-19 08:03:19,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:19,040 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 797 transitions. [2023-11-19 08:03:19,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:19,040 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 797 transitions. [2023-11-19 08:03:19,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 08:03:19,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:19,042 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] [2023-11-19 08:03:19,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:03:19,042 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:19,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:19,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1954406611, now seen corresponding path program 1 times [2023-11-19 08:03:19,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:19,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485220607] [2023-11-19 08:03:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:19,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:19,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:19,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:19,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:19,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:19,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:19,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:19,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:19,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485220607] [2023-11-19 08:03:19,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485220607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:19,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:19,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:03:19,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557004838] [2023-11-19 08:03:19,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:19,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:03:19,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:19,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:03:19,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:19,236 INFO L87 Difference]: Start difference. First operand 577 states and 797 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:20,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:20,727 INFO L93 Difference]: Finished difference Result 3071 states and 4399 transitions. [2023-11-19 08:03:20,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 08:03:20,727 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-19 08:03:20,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:20,746 INFO L225 Difference]: With dead ends: 3071 [2023-11-19 08:03:20,747 INFO L226 Difference]: Without dead ends: 2505 [2023-11-19 08:03:20,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-11-19 08:03:20,751 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 918 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:20,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 803 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 08:03:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2023-11-19 08:03:20,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 1604. [2023-11-19 08:03:20,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1359 states have (on average 1.3855776306107432) internal successors, (1883), 1377 states have internal predecessors, (1883), 144 states have call successors, (144), 88 states have call predecessors, (144), 100 states have return successors, (189), 142 states have call predecessors, (189), 144 states have call successors, (189) [2023-11-19 08:03:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2216 transitions. [2023-11-19 08:03:20,904 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2216 transitions. Word has length 67 [2023-11-19 08:03:20,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:20,905 INFO L495 AbstractCegarLoop]: Abstraction has 1604 states and 2216 transitions. [2023-11-19 08:03:20,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2216 transitions. [2023-11-19 08:03:20,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 08:03:20,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:20,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:20,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:03:20,909 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:20,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:20,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1592488097, now seen corresponding path program 1 times [2023-11-19 08:03:20,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:20,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621803237] [2023-11-19 08:03:20,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:20,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:20,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:20,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:20,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:21,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:21,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:21,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-19 08:03:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 08:03:21,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:21,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621803237] [2023-11-19 08:03:21,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621803237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:21,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:21,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:03:21,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940759579] [2023-11-19 08:03:21,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:21,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:03:21,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:21,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:03:21,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:21,027 INFO L87 Difference]: Start difference. First operand 1604 states and 2216 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:21,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:21,781 INFO L93 Difference]: Finished difference Result 3564 states and 5034 transitions. [2023-11-19 08:03:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:03:21,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 85 [2023-11-19 08:03:21,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:21,795 INFO L225 Difference]: With dead ends: 3564 [2023-11-19 08:03:21,795 INFO L226 Difference]: Without dead ends: 1971 [2023-11-19 08:03:21,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:03:21,804 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 170 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:21,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 549 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:03:21,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2023-11-19 08:03:21,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1634. [2023-11-19 08:03:21,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1389 states have (on average 1.3736501079913608) internal successors, (1908), 1407 states have internal predecessors, (1908), 144 states have call successors, (144), 88 states have call predecessors, (144), 100 states have return successors, (189), 142 states have call predecessors, (189), 144 states have call successors, (189) [2023-11-19 08:03:21,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2241 transitions. [2023-11-19 08:03:21,943 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2241 transitions. Word has length 85 [2023-11-19 08:03:21,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:21,944 INFO L495 AbstractCegarLoop]: Abstraction has 1634 states and 2241 transitions. [2023-11-19 08:03:21,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:21,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2241 transitions. [2023-11-19 08:03:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 08:03:21,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:21,946 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:21,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:03:21,947 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:21,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:21,947 INFO L85 PathProgramCache]: Analyzing trace with hash 346673949, now seen corresponding path program 1 times [2023-11-19 08:03:21,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:21,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166326349] [2023-11-19 08:03:21,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:21,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:22,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:22,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:22,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:22,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:22,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-19 08:03:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 08:03:22,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:22,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166326349] [2023-11-19 08:03:22,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166326349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:22,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:22,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:03:22,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178167983] [2023-11-19 08:03:22,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:22,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:03:22,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:22,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:03:22,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:22,129 INFO L87 Difference]: Start difference. First operand 1634 states and 2241 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:22,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:22,649 INFO L93 Difference]: Finished difference Result 3512 states and 4842 transitions. [2023-11-19 08:03:22,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:03:22,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 85 [2023-11-19 08:03:22,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:22,666 INFO L225 Difference]: With dead ends: 3512 [2023-11-19 08:03:22,666 INFO L226 Difference]: Without dead ends: 1890 [2023-11-19 08:03:22,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:03:22,672 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 344 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:22,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 391 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:03:22,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2023-11-19 08:03:22,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1622. [2023-11-19 08:03:22,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1377 states have (on average 1.3507625272331154) internal successors, (1860), 1395 states have internal predecessors, (1860), 144 states have call successors, (144), 88 states have call predecessors, (144), 100 states have return successors, (189), 142 states have call predecessors, (189), 144 states have call successors, (189) [2023-11-19 08:03:22,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2193 transitions. [2023-11-19 08:03:22,831 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2193 transitions. Word has length 85 [2023-11-19 08:03:22,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:22,831 INFO L495 AbstractCegarLoop]: Abstraction has 1622 states and 2193 transitions. [2023-11-19 08:03:22,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:22,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2193 transitions. [2023-11-19 08:03:22,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 08:03:22,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:22,835 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:22,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:03:22,835 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:22,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:22,836 INFO L85 PathProgramCache]: Analyzing trace with hash -550719329, now seen corresponding path program 1 times [2023-11-19 08:03:22,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:22,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208657147] [2023-11-19 08:03:22,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:22,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:22,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:22,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:22,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:22,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:23,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-19 08:03:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 08:03:23,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:23,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208657147] [2023-11-19 08:03:23,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208657147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:23,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:23,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 08:03:23,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450891910] [2023-11-19 08:03:23,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:23,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:03:23,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:23,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:03:23,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:03:23,038 INFO L87 Difference]: Start difference. First operand 1622 states and 2193 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:24,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:24,023 INFO L93 Difference]: Finished difference Result 2635 states and 3575 transitions. [2023-11-19 08:03:24,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 08:03:24,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 85 [2023-11-19 08:03:24,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:24,038 INFO L225 Difference]: With dead ends: 2635 [2023-11-19 08:03:24,038 INFO L226 Difference]: Without dead ends: 1633 [2023-11-19 08:03:24,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-11-19 08:03:24,043 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 616 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:24,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 517 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 08:03:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2023-11-19 08:03:24,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1294. [2023-11-19 08:03:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1097 states have (on average 1.3381950774840474) internal successors, (1468), 1108 states have internal predecessors, (1468), 119 states have call successors, (119), 71 states have call predecessors, (119), 77 states have return successors, (140), 116 states have call predecessors, (140), 119 states have call successors, (140) [2023-11-19 08:03:24,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 1727 transitions. [2023-11-19 08:03:24,161 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 1727 transitions. Word has length 85 [2023-11-19 08:03:24,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:24,161 INFO L495 AbstractCegarLoop]: Abstraction has 1294 states and 1727 transitions. [2023-11-19 08:03:24,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:24,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 1727 transitions. [2023-11-19 08:03:24,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 08:03:24,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:24,163 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:24,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:03:24,164 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:24,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:24,164 INFO L85 PathProgramCache]: Analyzing trace with hash -302572835, now seen corresponding path program 1 times [2023-11-19 08:03:24,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:24,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716091864] [2023-11-19 08:03:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:24,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-19 08:03:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 08:03:24,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:24,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716091864] [2023-11-19 08:03:24,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716091864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:24,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:24,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 08:03:24,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557848692] [2023-11-19 08:03:24,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:24,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:03:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:03:24,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:03:24,345 INFO L87 Difference]: Start difference. First operand 1294 states and 1727 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:25,428 INFO L93 Difference]: Finished difference Result 2846 states and 3801 transitions. [2023-11-19 08:03:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 08:03:25,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 85 [2023-11-19 08:03:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:25,440 INFO L225 Difference]: With dead ends: 2846 [2023-11-19 08:03:25,440 INFO L226 Difference]: Without dead ends: 1658 [2023-11-19 08:03:25,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2023-11-19 08:03:25,445 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 514 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:25,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 590 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 08:03:25,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2023-11-19 08:03:25,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1282. [2023-11-19 08:03:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1088 states have (on average 1.333639705882353) internal successors, (1451), 1096 states have internal predecessors, (1451), 119 states have call successors, (119), 71 states have call predecessors, (119), 74 states have return successors, (133), 115 states have call predecessors, (133), 119 states have call successors, (133) [2023-11-19 08:03:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1703 transitions. [2023-11-19 08:03:25,559 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1703 transitions. Word has length 85 [2023-11-19 08:03:25,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:25,559 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 1703 transitions. [2023-11-19 08:03:25,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:03:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1703 transitions. [2023-11-19 08:03:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 08:03:25,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:25,561 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:25,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:03:25,562 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:25,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:25,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1674380133, now seen corresponding path program 1 times [2023-11-19 08:03:25,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:25,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429481756] [2023-11-19 08:03:25,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:25,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:25,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:25,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:25,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:25,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:25,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:25,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-19 08:03:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:03:25,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:25,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429481756] [2023-11-19 08:03:25,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429481756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:25,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496288194] [2023-11-19 08:03:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:25,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:25,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:25,718 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:25,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:03:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:25,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:03:25,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:25,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:25,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496288194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:25,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:25,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-19 08:03:25,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312945477] [2023-11-19 08:03:25,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:25,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:25,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:25,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:25,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:25,892 INFO L87 Difference]: Start difference. First operand 1282 states and 1703 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 08:03:26,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:26,039 INFO L93 Difference]: Finished difference Result 2967 states and 4010 transitions. [2023-11-19 08:03:26,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:26,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 85 [2023-11-19 08:03:26,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:26,054 INFO L225 Difference]: With dead ends: 2967 [2023-11-19 08:03:26,054 INFO L226 Difference]: Without dead ends: 2099 [2023-11-19 08:03:26,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:26,058 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 131 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:26,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 479 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:26,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2023-11-19 08:03:26,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2099. [2023-11-19 08:03:26,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 1781 states have (on average 1.3239752947782144) internal successors, (2358), 1791 states have internal predecessors, (2358), 194 states have call successors, (194), 118 states have call predecessors, (194), 123 states have return successors, (258), 190 states have call predecessors, (258), 194 states have call successors, (258) [2023-11-19 08:03:26,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2810 transitions. [2023-11-19 08:03:26,226 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2810 transitions. Word has length 85 [2023-11-19 08:03:26,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:26,227 INFO L495 AbstractCegarLoop]: Abstraction has 2099 states and 2810 transitions. [2023-11-19 08:03:26,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 08:03:26,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2810 transitions. [2023-11-19 08:03:26,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 08:03:26,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:26,229 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:26,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:26,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 08:03:26,445 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:26,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:26,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1173937345, now seen corresponding path program 1 times [2023-11-19 08:03:26,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:26,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866474264] [2023-11-19 08:03:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:26,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-19 08:03:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 08:03:26,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:26,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866474264] [2023-11-19 08:03:26,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866474264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:26,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:26,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:03:26,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358879569] [2023-11-19 08:03:26,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:26,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:03:26,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:26,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:03:26,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:26,739 INFO L87 Difference]: Start difference. First operand 2099 states and 2810 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-19 08:03:27,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:27,638 INFO L93 Difference]: Finished difference Result 6800 states and 9241 transitions. [2023-11-19 08:03:27,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:03:27,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 100 [2023-11-19 08:03:27,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:27,676 INFO L225 Difference]: With dead ends: 6800 [2023-11-19 08:03:27,677 INFO L226 Difference]: Without dead ends: 4713 [2023-11-19 08:03:27,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:03:27,686 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 577 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:27,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 466 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 08:03:27,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2023-11-19 08:03:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 4317. [2023-11-19 08:03:28,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4317 states, 3653 states have (on average 1.300027374760471) internal successors, (4749), 3707 states have internal predecessors, (4749), 366 states have call successors, (366), 230 states have call predecessors, (366), 297 states have return successors, (707), 381 states have call predecessors, (707), 366 states have call successors, (707) [2023-11-19 08:03:28,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4317 states to 4317 states and 5822 transitions. [2023-11-19 08:03:28,101 INFO L78 Accepts]: Start accepts. Automaton has 4317 states and 5822 transitions. Word has length 100 [2023-11-19 08:03:28,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:28,102 INFO L495 AbstractCegarLoop]: Abstraction has 4317 states and 5822 transitions. [2023-11-19 08:03:28,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-19 08:03:28,103 INFO L276 IsEmpty]: Start isEmpty. Operand 4317 states and 5822 transitions. [2023-11-19 08:03:28,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 08:03:28,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:28,106 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:28,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 08:03:28,106 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:28,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:28,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1145437055, now seen corresponding path program 1 times [2023-11-19 08:03:28,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:28,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502231126] [2023-11-19 08:03:28,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:28,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:28,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:28,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:28,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:28,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:28,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-19 08:03:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:28,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 08:03:28,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:28,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502231126] [2023-11-19 08:03:28,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502231126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:28,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:28,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:03:28,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061516315] [2023-11-19 08:03:28,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:28,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:03:28,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:28,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:03:28,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:28,196 INFO L87 Difference]: Start difference. First operand 4317 states and 5822 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-19 08:03:28,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:28,801 INFO L93 Difference]: Finished difference Result 9188 states and 12384 transitions. [2023-11-19 08:03:28,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:03:28,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 100 [2023-11-19 08:03:28,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:28,835 INFO L225 Difference]: With dead ends: 9188 [2023-11-19 08:03:28,835 INFO L226 Difference]: Without dead ends: 4882 [2023-11-19 08:03:28,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:03:28,852 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 340 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:28,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 241 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:03:28,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4882 states. [2023-11-19 08:03:29,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4882 to 4312. [2023-11-19 08:03:29,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 3651 states have (on average 1.2999178307313064) internal successors, (4746), 3704 states have internal predecessors, (4746), 363 states have call successors, (363), 230 states have call predecessors, (363), 297 states have return successors, (703), 378 states have call predecessors, (703), 363 states have call successors, (703) [2023-11-19 08:03:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 5812 transitions. [2023-11-19 08:03:29,306 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 5812 transitions. Word has length 100 [2023-11-19 08:03:29,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:29,307 INFO L495 AbstractCegarLoop]: Abstraction has 4312 states and 5812 transitions. [2023-11-19 08:03:29,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-19 08:03:29,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 5812 transitions. [2023-11-19 08:03:29,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-19 08:03:29,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:29,311 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:29,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 08:03:29,312 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:29,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:29,312 INFO L85 PathProgramCache]: Analyzing trace with hash -343505380, now seen corresponding path program 1 times [2023-11-19 08:03:29,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:29,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125165727] [2023-11-19 08:03:29,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:29,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:29,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:29,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:29,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:29,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:29,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:29,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-19 08:03:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:29,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 08:03:29,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:29,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125165727] [2023-11-19 08:03:29,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125165727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:29,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:29,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:03:29,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912768655] [2023-11-19 08:03:29,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:29,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:03:29,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:29,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:03:29,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:29,423 INFO L87 Difference]: Start difference. First operand 4312 states and 5812 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 08:03:30,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:30,248 INFO L93 Difference]: Finished difference Result 10234 states and 13951 transitions. [2023-11-19 08:03:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:03:30,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 102 [2023-11-19 08:03:30,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:30,305 INFO L225 Difference]: With dead ends: 10234 [2023-11-19 08:03:30,305 INFO L226 Difference]: Without dead ends: 6733 [2023-11-19 08:03:30,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:03:30,318 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 439 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:30,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 318 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:03:30,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6733 states. [2023-11-19 08:03:30,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6733 to 5893. [2023-11-19 08:03:30,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5893 states, 4984 states have (on average 1.2951444622792938) internal successors, (6455), 5049 states have internal predecessors, (6455), 504 states have call successors, (504), 321 states have call predecessors, (504), 404 states have return successors, (923), 523 states have call predecessors, (923), 504 states have call successors, (923) [2023-11-19 08:03:30,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5893 states to 5893 states and 7882 transitions. [2023-11-19 08:03:30,978 INFO L78 Accepts]: Start accepts. Automaton has 5893 states and 7882 transitions. Word has length 102 [2023-11-19 08:03:30,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:30,979 INFO L495 AbstractCegarLoop]: Abstraction has 5893 states and 7882 transitions. [2023-11-19 08:03:30,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 08:03:30,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5893 states and 7882 transitions. [2023-11-19 08:03:30,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-19 08:03:30,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:30,984 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:30,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 08:03:30,985 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:30,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:30,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2035116046, now seen corresponding path program 1 times [2023-11-19 08:03:30,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:30,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306554867] [2023-11-19 08:03:30,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:30,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:31,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:31,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:31,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:31,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:31,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:31,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-19 08:03:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:31,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-19 08:03:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:31,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 08:03:31,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:31,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306554867] [2023-11-19 08:03:31,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306554867] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501731494] [2023-11-19 08:03:31,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:31,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:31,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:31,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:31,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:03:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:31,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:03:31,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:03:31,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:31,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501731494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:31,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:31,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-19 08:03:31,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901070427] [2023-11-19 08:03:31,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:31,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:31,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:31,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:31,355 INFO L87 Difference]: Start difference. First operand 5893 states and 7882 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 08:03:31,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:31,867 INFO L93 Difference]: Finished difference Result 13842 states and 18528 transitions. [2023-11-19 08:03:31,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:31,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 120 [2023-11-19 08:03:31,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:31,900 INFO L225 Difference]: With dead ends: 13842 [2023-11-19 08:03:31,900 INFO L226 Difference]: Without dead ends: 7946 [2023-11-19 08:03:31,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:31,919 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 87 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:31,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 373 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:31,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7946 states. [2023-11-19 08:03:32,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7946 to 7880. [2023-11-19 08:03:32,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7880 states, 6661 states have (on average 1.291697943251764) internal successors, (8604), 6741 states have internal predecessors, (8604), 682 states have call successors, (682), 438 states have call predecessors, (682), 536 states have return successors, (1154), 701 states have call predecessors, (1154), 682 states have call successors, (1154) [2023-11-19 08:03:32,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7880 states to 7880 states and 10440 transitions. [2023-11-19 08:03:32,585 INFO L78 Accepts]: Start accepts. Automaton has 7880 states and 10440 transitions. Word has length 120 [2023-11-19 08:03:32,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:32,585 INFO L495 AbstractCegarLoop]: Abstraction has 7880 states and 10440 transitions. [2023-11-19 08:03:32,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 08:03:32,586 INFO L276 IsEmpty]: Start isEmpty. Operand 7880 states and 10440 transitions. [2023-11-19 08:03:32,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-19 08:03:32,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:32,591 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:32,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:32,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 08:03:32,805 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:32,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:32,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1086589995, now seen corresponding path program 1 times [2023-11-19 08:03:32,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:32,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553603453] [2023-11-19 08:03:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:32,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-19 08:03:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-19 08:03:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 08:03:32,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:32,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553603453] [2023-11-19 08:03:32,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553603453] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:32,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711149068] [2023-11-19 08:03:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:32,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:32,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:33,009 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:33,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:03:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:33,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:03:33,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:33,297 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:03:33,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:33,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711149068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:33,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:33,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-19 08:03:33,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841537615] [2023-11-19 08:03:33,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:33,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:33,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:33,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:33,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:33,300 INFO L87 Difference]: Start difference. First operand 7880 states and 10440 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 08:03:33,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:33,947 INFO L93 Difference]: Finished difference Result 16618 states and 22420 transitions. [2023-11-19 08:03:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:33,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 122 [2023-11-19 08:03:33,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:33,987 INFO L225 Difference]: With dead ends: 16618 [2023-11-19 08:03:33,987 INFO L226 Difference]: Without dead ends: 9561 [2023-11-19 08:03:34,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:34,010 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 122 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:34,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 219 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:34,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9561 states. [2023-11-19 08:03:34,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9561 to 9454. [2023-11-19 08:03:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9454 states, 8061 states have (on average 1.2647314229003845) internal successors, (10195), 8157 states have internal predecessors, (10195), 758 states have call successors, (758), 529 states have call predecessors, (758), 634 states have return successors, (1380), 768 states have call predecessors, (1380), 758 states have call successors, (1380) [2023-11-19 08:03:34,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9454 states to 9454 states and 12333 transitions. [2023-11-19 08:03:34,980 INFO L78 Accepts]: Start accepts. Automaton has 9454 states and 12333 transitions. Word has length 122 [2023-11-19 08:03:34,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:34,981 INFO L495 AbstractCegarLoop]: Abstraction has 9454 states and 12333 transitions. [2023-11-19 08:03:34,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 08:03:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 9454 states and 12333 transitions. [2023-11-19 08:03:34,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 08:03:34,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:34,985 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:35,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:35,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 08:03:35,200 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:35,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:35,201 INFO L85 PathProgramCache]: Analyzing trace with hash -949299769, now seen corresponding path program 1 times [2023-11-19 08:03:35,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:35,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866204165] [2023-11-19 08:03:35,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:35,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:35,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:35,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:35,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:35,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:35,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:35,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-19 08:03:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:35,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-19 08:03:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:35,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 08:03:35,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:35,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866204165] [2023-11-19 08:03:35,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866204165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:35,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569363276] [2023-11-19 08:03:35,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:35,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:35,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:35,324 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:35,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:03:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:35,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:03:35,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:35,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:35,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569363276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:35,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:35,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-19 08:03:35,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138268489] [2023-11-19 08:03:35,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:35,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:35,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:35,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:35,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:35,485 INFO L87 Difference]: Start difference. First operand 9454 states and 12333 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 08:03:35,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:35,914 INFO L93 Difference]: Finished difference Result 17326 states and 22550 transitions. [2023-11-19 08:03:35,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:35,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 124 [2023-11-19 08:03:35,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:35,952 INFO L225 Difference]: With dead ends: 17326 [2023-11-19 08:03:35,952 INFO L226 Difference]: Without dead ends: 10143 [2023-11-19 08:03:35,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:35,971 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 122 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:35,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 440 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:35,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10143 states. [2023-11-19 08:03:36,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10143 to 10056. [2023-11-19 08:03:36,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10056 states, 8636 states have (on average 1.2549791570171376) internal successors, (10838), 8738 states have internal predecessors, (10838), 758 states have call successors, (758), 550 states have call predecessors, (758), 661 states have return successors, (1272), 768 states have call predecessors, (1272), 758 states have call successors, (1272) [2023-11-19 08:03:36,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10056 states to 10056 states and 12868 transitions. [2023-11-19 08:03:36,717 INFO L78 Accepts]: Start accepts. Automaton has 10056 states and 12868 transitions. Word has length 124 [2023-11-19 08:03:36,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:36,717 INFO L495 AbstractCegarLoop]: Abstraction has 10056 states and 12868 transitions. [2023-11-19 08:03:36,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 08:03:36,718 INFO L276 IsEmpty]: Start isEmpty. Operand 10056 states and 12868 transitions. [2023-11-19 08:03:36,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-19 08:03:36,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:36,725 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:36,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:36,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:36,941 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:36,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:36,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1922252635, now seen corresponding path program 1 times [2023-11-19 08:03:36,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:36,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775489567] [2023-11-19 08:03:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:36,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:37,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:37,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:37,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:37,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:37,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:37,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-19 08:03:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:37,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-19 08:03:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:37,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:37,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-19 08:03:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:37,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 5 proven. 39 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-19 08:03:37,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:37,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775489567] [2023-11-19 08:03:37,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775489567] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:37,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960575131] [2023-11-19 08:03:37,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:37,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:37,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:37,092 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:37,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:03:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:37,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:03:37,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-19 08:03:37,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:37,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960575131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:37,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:37,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-11-19 08:03:37,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181874009] [2023-11-19 08:03:37,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:37,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:37,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:37,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:37,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:37,225 INFO L87 Difference]: Start difference. First operand 10056 states and 12868 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:38,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:38,465 INFO L93 Difference]: Finished difference Result 29339 states and 37985 transitions. [2023-11-19 08:03:38,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:38,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 157 [2023-11-19 08:03:38,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:38,536 INFO L225 Difference]: With dead ends: 29339 [2023-11-19 08:03:38,536 INFO L226 Difference]: Without dead ends: 19295 [2023-11-19 08:03:38,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:38,558 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 150 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:38,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 374 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:38,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19295 states. [2023-11-19 08:03:39,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19295 to 19280. [2023-11-19 08:03:40,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19280 states, 16580 states have (on average 1.244270205066345) internal successors, (20630), 16773 states have internal predecessors, (20630), 1433 states have call successors, (1433), 1059 states have call predecessors, (1433), 1266 states have return successors, (2696), 1449 states have call predecessors, (2696), 1433 states have call successors, (2696) [2023-11-19 08:03:40,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19280 states to 19280 states and 24759 transitions. [2023-11-19 08:03:40,073 INFO L78 Accepts]: Start accepts. Automaton has 19280 states and 24759 transitions. Word has length 157 [2023-11-19 08:03:40,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:40,073 INFO L495 AbstractCegarLoop]: Abstraction has 19280 states and 24759 transitions. [2023-11-19 08:03:40,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-19 08:03:40,073 INFO L276 IsEmpty]: Start isEmpty. Operand 19280 states and 24759 transitions. [2023-11-19 08:03:40,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-19 08:03:40,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:40,085 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:40,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:40,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:40,306 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:40,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:40,306 INFO L85 PathProgramCache]: Analyzing trace with hash 806131337, now seen corresponding path program 1 times [2023-11-19 08:03:40,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:40,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381221350] [2023-11-19 08:03:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:40,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:40,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:40,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:40,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:40,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:40,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:40,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-19 08:03:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:40,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-19 08:03:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:40,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:40,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-19 08:03:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:40,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-19 08:03:40,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:40,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381221350] [2023-11-19 08:03:40,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381221350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:40,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:40,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:03:40,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563804588] [2023-11-19 08:03:40,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:40,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:03:40,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:40,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:03:40,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:40,410 INFO L87 Difference]: Start difference. First operand 19280 states and 24759 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 08:03:41,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:41,772 INFO L93 Difference]: Finished difference Result 39917 states and 51415 transitions. [2023-11-19 08:03:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:03:41,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 158 [2023-11-19 08:03:41,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:41,842 INFO L225 Difference]: With dead ends: 39917 [2023-11-19 08:03:41,842 INFO L226 Difference]: Without dead ends: 20649 [2023-11-19 08:03:41,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:03:41,872 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 339 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:41,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 236 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:03:41,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20649 states. [2023-11-19 08:03:43,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20649 to 18566. [2023-11-19 08:03:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18566 states, 16022 states have (on average 1.241792535264012) internal successors, (19896), 16226 states have internal predecessors, (19896), 1328 states have call successors, (1328), 993 states have call predecessors, (1328), 1215 states have return successors, (2569), 1347 states have call predecessors, (2569), 1328 states have call successors, (2569) [2023-11-19 08:03:43,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18566 states to 18566 states and 23793 transitions. [2023-11-19 08:03:43,097 INFO L78 Accepts]: Start accepts. Automaton has 18566 states and 23793 transitions. Word has length 158 [2023-11-19 08:03:43,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:43,097 INFO L495 AbstractCegarLoop]: Abstraction has 18566 states and 23793 transitions. [2023-11-19 08:03:43,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 08:03:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 18566 states and 23793 transitions. [2023-11-19 08:03:43,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-19 08:03:43,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:43,109 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:43,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 08:03:43,109 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:43,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:43,110 INFO L85 PathProgramCache]: Analyzing trace with hash -836659987, now seen corresponding path program 1 times [2023-11-19 08:03:43,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:43,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649590327] [2023-11-19 08:03:43,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:43,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:43,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:43,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:43,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:43,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:43,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:43,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-19 08:03:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:43,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-19 08:03:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:43,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:43,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-19 08:03:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:43,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-19 08:03:43,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:43,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649590327] [2023-11-19 08:03:43,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649590327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:43,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091376651] [2023-11-19 08:03:43,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:43,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:43,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:43,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:43,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:03:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:43,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:03:43,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 08:03:43,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:43,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091376651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:43,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:43,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-11-19 08:03:43,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649938551] [2023-11-19 08:03:43,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:43,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:43,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:43,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:43,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:43,380 INFO L87 Difference]: Start difference. First operand 18566 states and 23793 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 08:03:44,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:44,892 INFO L93 Difference]: Finished difference Result 29293 states and 38546 transitions. [2023-11-19 08:03:44,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:44,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 159 [2023-11-19 08:03:44,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:44,951 INFO L225 Difference]: With dead ends: 29293 [2023-11-19 08:03:44,951 INFO L226 Difference]: Without dead ends: 18186 [2023-11-19 08:03:44,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:44,968 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 120 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:44,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 468 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:44,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18186 states. [2023-11-19 08:03:46,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18186 to 18124. [2023-11-19 08:03:46,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18124 states, 15580 states have (on average 1.2297175866495507) internal successors, (19159), 15784 states have internal predecessors, (19159), 1328 states have call successors, (1328), 993 states have call predecessors, (1328), 1215 states have return successors, (2569), 1347 states have call predecessors, (2569), 1328 states have call successors, (2569) [2023-11-19 08:03:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18124 states to 18124 states and 23056 transitions. [2023-11-19 08:03:46,441 INFO L78 Accepts]: Start accepts. Automaton has 18124 states and 23056 transitions. Word has length 159 [2023-11-19 08:03:46,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:46,442 INFO L495 AbstractCegarLoop]: Abstraction has 18124 states and 23056 transitions. [2023-11-19 08:03:46,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 08:03:46,443 INFO L276 IsEmpty]: Start isEmpty. Operand 18124 states and 23056 transitions. [2023-11-19 08:03:46,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-19 08:03:46,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:46,455 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:46,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:46,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-19 08:03:46,676 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:46,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:46,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1562564278, now seen corresponding path program 1 times [2023-11-19 08:03:46,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:46,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369243456] [2023-11-19 08:03:46,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:46,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-19 08:03:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-19 08:03:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-19 08:03:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-19 08:03:46,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:46,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369243456] [2023-11-19 08:03:46,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369243456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:46,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:46,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:03:46,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539015642] [2023-11-19 08:03:46,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:46,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:03:46,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:03:46,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:46,826 INFO L87 Difference]: Start difference. First operand 18124 states and 23056 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 08:03:48,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:48,485 INFO L93 Difference]: Finished difference Result 31318 states and 40022 transitions. [2023-11-19 08:03:48,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:03:48,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2023-11-19 08:03:48,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:48,529 INFO L225 Difference]: With dead ends: 31318 [2023-11-19 08:03:48,530 INFO L226 Difference]: Without dead ends: 14908 [2023-11-19 08:03:48,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:03:48,554 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 575 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:48,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 540 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 08:03:48,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14908 states. [2023-11-19 08:03:49,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14908 to 13406. [2023-11-19 08:03:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13406 states, 11606 states have (on average 1.2093744614854385) internal successors, (14036), 11756 states have internal predecessors, (14036), 919 states have call successors, (919), 708 states have call predecessors, (919), 880 states have return successors, (1539), 942 states have call predecessors, (1539), 919 states have call successors, (1539) [2023-11-19 08:03:49,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13406 states to 13406 states and 16494 transitions. [2023-11-19 08:03:49,503 INFO L78 Accepts]: Start accepts. Automaton has 13406 states and 16494 transitions. Word has length 160 [2023-11-19 08:03:49,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:49,503 INFO L495 AbstractCegarLoop]: Abstraction has 13406 states and 16494 transitions. [2023-11-19 08:03:49,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 08:03:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand 13406 states and 16494 transitions. [2023-11-19 08:03:49,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-19 08:03:49,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:49,585 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:49,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-19 08:03:49,586 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:49,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:49,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1560316271, now seen corresponding path program 1 times [2023-11-19 08:03:49,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:49,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079787147] [2023-11-19 08:03:49,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:49,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:49,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:03:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:49,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 08:03:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:49,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:03:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:49,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-19 08:03:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:49,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:49,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-19 08:03:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:49,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-19 08:03:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:49,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:49,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-19 08:03:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:49,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-19 08:03:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:49,736 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 39 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 08:03:49,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:49,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079787147] [2023-11-19 08:03:49,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079787147] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:49,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596753179] [2023-11-19 08:03:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:49,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:49,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:49,739 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:49,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90d46e3d-f163-4c7b-8924-5e725c70177d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:03:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:49,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:03:49,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:49,953 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 08:03:49,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:49,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596753179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:49,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:49,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-11-19 08:03:49,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672700663] [2023-11-19 08:03:49,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:49,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:49,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:49,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:49,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:49,956 INFO L87 Difference]: Start difference. First operand 13406 states and 16494 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-19 08:03:50,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:50,871 INFO L93 Difference]: Finished difference Result 23848 states and 29765 transitions. [2023-11-19 08:03:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:50,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 161 [2023-11-19 08:03:50,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:50,911 INFO L225 Difference]: With dead ends: 23848 [2023-11-19 08:03:50,911 INFO L226 Difference]: Without dead ends: 13447 [2023-11-19 08:03:50,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:50,927 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 90 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:50,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 406 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:50,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13447 states.