./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.10.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_057c8360-080d-4912-9478-071e0d5951f9/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c8360-080d-4912-9478-071e0d5951f9/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c8360-080d-4912-9478-071e0d5951f9/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c8360-080d-4912-9478-071e0d5951f9/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.10.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c8360-080d-4912-9478-071e0d5951f9/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c8360-080d-4912-9478-071e0d5951f9/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:32:03,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:32:03,998 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c8360-080d-4912-9478-071e0d5951f9/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:32:04,006 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:32:04,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:32:04,037 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:32:04,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:32:04,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:32:04,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:32:04,041 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:32:04,041 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:32:04,042 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:32:04,043 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:32:04,043 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:32:04,044 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:32:04,044 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:32:04,045 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:32:04,046 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:32:04,047 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:32:04,047 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:32:04,048 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:32:04,049 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:32:04,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:32:04,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:32:04,051 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:32:04,052 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:32:04,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:32:04,053 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:32:04,053 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:32:04,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:32:04,055 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:32:04,055 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:32:04,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:32:04,056 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:32:04,057 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:32:04,057 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:32:04,058 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:32:04,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:04,058 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:32:04,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:32:04,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:32:04,060 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:32:04,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:32:04,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:32:04,061 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:32:04,061 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:32:04,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:32:04,061 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_057c8360-080d-4912-9478-071e0d5951f9/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c8360-080d-4912-9478-071e0d5951f9/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 [2023-11-23 20:32:04,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:32:04,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:32:04,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:32:04,399 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:32:04,400 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:32:04,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c8360-080d-4912-9478-071e0d5951f9/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/systemc/transmitter.10.cil.c [2023-11-23 20:32:07,774 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:32:08,064 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:32:08,064 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c8360-080d-4912-9478-071e0d5951f9/sv-benchmarks/c/systemc/transmitter.10.cil.c [2023-11-23 20:32:08,083 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c8360-080d-4912-9478-071e0d5951f9/bin/utaipan-verify-mE87zJ7Ire/data/19600e225/1562305d40984dea98bf175583ea66cf/FLAG9090f6d71 [2023-11-23 20:32:08,107 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c8360-080d-4912-9478-071e0d5951f9/bin/utaipan-verify-mE87zJ7Ire/data/19600e225/1562305d40984dea98bf175583ea66cf [2023-11-23 20:32:08,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:32:08,118 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:32:08,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:08,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:32:08,128 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:32:08,129 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef2e052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08, skipping insertion in model container [2023-11-23 20:32:08,130 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,203 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:32:08,354 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_057c8360-080d-4912-9478-071e0d5951f9/sv-benchmarks/c/systemc/transmitter.10.cil.c[706,719] [2023-11-23 20:32:08,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:08,513 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:32:08,528 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_057c8360-080d-4912-9478-071e0d5951f9/sv-benchmarks/c/systemc/transmitter.10.cil.c[706,719] [2023-11-23 20:32:08,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:08,629 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:32:08,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08 WrapperNode [2023-11-23 20:32:08,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:08,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:08,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:32:08,631 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:32:08,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,713 INFO L138 Inliner]: procedures = 48, calls = 60, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 741 [2023-11-23 20:32:08,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:08,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:32:08,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:32:08,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:32:08,730 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,798 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,815 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,826 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:32:08,840 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:32:08,840 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:32:08,840 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:32:08,842 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (1/1) ... [2023-11-23 20:32:08,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:08,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c8360-080d-4912-9478-071e0d5951f9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:08,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c8360-080d-4912-9478-071e0d5951f9/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:32:08,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_057c8360-080d-4912-9478-071e0d5951f9/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:32:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:32:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-23 20:32:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-23 20:32:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-23 20:32:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-23 20:32:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-23 20:32:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-23 20:32:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-23 20:32:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-23 20:32:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-23 20:32:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-23 20:32:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:32:08,943 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-23 20:32:08,943 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-23 20:32:08,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:32:08,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:32:09,122 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:32:09,125 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:32:10,146 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:32:10,736 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:32:10,737 INFO L309 CfgBuilder]: Removed 14 assume(true) statements. [2023-11-23 20:32:10,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:10 BoogieIcfgContainer [2023-11-23 20:32:10,740 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:32:10,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:32:10,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:32:10,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:32:10,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:32:08" (1/3) ... [2023-11-23 20:32:10,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e0dbef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:10, skipping insertion in model container [2023-11-23 20:32:10,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:08" (2/3) ... [2023-11-23 20:32:10,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e0dbef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:10, skipping insertion in model container [2023-11-23 20:32:10,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:10" (3/3) ... [2023-11-23 20:32:10,754 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.10.cil.c [2023-11-23 20:32:10,778 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:32:10,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:32:10,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:32:10,878 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=FINITE_AUTOMATA, 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;@6b0bd383, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:32:10,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:32:10,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 144 states have (on average 1.5138888888888888) internal successors, (218), 146 states have internal predecessors, (218), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-23 20:32:10,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 20:32:10,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:10,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:10,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:10,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:10,912 INFO L85 PathProgramCache]: Analyzing trace with hash 18312327, now seen corresponding path program 1 times [2023-11-23 20:32:10,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:10,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592109490] [2023-11-23 20:32:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:10,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:11,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592109490] [2023-11-23 20:32:11,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592109490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:11,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:11,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:32:11,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839957316] [2023-11-23 20:32:11,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:11,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:32:11,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:11,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:32:11,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:11,741 INFO L87 Difference]: Start difference. First operand has 175 states, 144 states have (on average 1.5138888888888888) internal successors, (218), 146 states have internal predecessors, (218), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:12,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:12,411 INFO L93 Difference]: Finished difference Result 512 states and 785 transitions. [2023-11-23 20:32:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:32:12,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (5), 1 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 69 [2023-11-23 20:32:12,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:12,429 INFO L225 Difference]: With dead ends: 512 [2023-11-23 20:32:12,429 INFO L226 Difference]: Without dead ends: 338 [2023-11-23 20:32:12,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:12,444 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 463 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:12,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 734 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 20:32:12,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-23 20:32:12,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 334. [2023-11-23 20:32:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 279 states have (on average 1.4731182795698925) internal successors, (411), 281 states have internal predecessors, (411), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-23 20:32:12,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 495 transitions. [2023-11-23 20:32:12,531 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 495 transitions. Word has length 69 [2023-11-23 20:32:12,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:12,532 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 495 transitions. [2023-11-23 20:32:12,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:12,533 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 495 transitions. [2023-11-23 20:32:12,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 20:32:12,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:12,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:12,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:32:12,538 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:12,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:12,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1013018488, now seen corresponding path program 1 times [2023-11-23 20:32:12,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:12,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048069272] [2023-11-23 20:32:12,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:12,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:12,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:12,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048069272] [2023-11-23 20:32:12,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048069272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:12,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:12,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:32:12,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883740667] [2023-11-23 20:32:12,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:12,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:32:12,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:12,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:32:12,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:12,875 INFO L87 Difference]: Start difference. First operand 334 states and 495 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:14,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:14,037 INFO L93 Difference]: Finished difference Result 1945 states and 3035 transitions. [2023-11-23 20:32:14,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:32:14,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 1 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 69 [2023-11-23 20:32:14,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:14,070 INFO L225 Difference]: With dead ends: 1945 [2023-11-23 20:32:14,070 INFO L226 Difference]: Without dead ends: 1616 [2023-11-23 20:32:14,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:32:14,082 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 1184 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:14,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 925 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 20:32:14,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2023-11-23 20:32:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1580. [2023-11-23 20:32:14,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1337 states have (on average 1.468212415856395) internal successors, (1963), 1345 states have internal predecessors, (1963), 182 states have call successors, (182), 60 states have call predecessors, (182), 60 states have return successors, (280), 175 states have call predecessors, (280), 182 states have call successors, (280) [2023-11-23 20:32:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2425 transitions. [2023-11-23 20:32:14,266 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2425 transitions. Word has length 69 [2023-11-23 20:32:14,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:14,267 INFO L495 AbstractCegarLoop]: Abstraction has 1580 states and 2425 transitions. [2023-11-23 20:32:14,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:14,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2425 transitions. [2023-11-23 20:32:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 20:32:14,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:14,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:14,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:32:14,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:14,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:14,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1286796983, now seen corresponding path program 1 times [2023-11-23 20:32:14,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:14,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770357354] [2023-11-23 20:32:14,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:14,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:14,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:14,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770357354] [2023-11-23 20:32:14,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770357354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:14,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:14,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:32:14,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641168943] [2023-11-23 20:32:14,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:14,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:32:14,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:14,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:32:14,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:14,600 INFO L87 Difference]: Start difference. First operand 1580 states and 2425 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:15,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:15,651 INFO L93 Difference]: Finished difference Result 6243 states and 9861 transitions. [2023-11-23 20:32:15,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:32:15,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 1 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 69 [2023-11-23 20:32:15,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:15,712 INFO L225 Difference]: With dead ends: 6243 [2023-11-23 20:32:15,712 INFO L226 Difference]: Without dead ends: 4668 [2023-11-23 20:32:15,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:32:15,734 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 1186 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:15,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 919 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 20:32:15,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4668 states. [2023-11-23 20:32:16,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4668 to 4390. [2023-11-23 20:32:16,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4390 states, 3805 states have (on average 1.4767411300919842) internal successors, (5619), 3763 states have internal predecessors, (5619), 420 states have call successors, (420), 148 states have call predecessors, (420), 164 states have return successors, (842), 479 states have call predecessors, (842), 420 states have call successors, (842) [2023-11-23 20:32:16,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 6881 transitions. [2023-11-23 20:32:16,150 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 6881 transitions. Word has length 69 [2023-11-23 20:32:16,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:16,150 INFO L495 AbstractCegarLoop]: Abstraction has 4390 states and 6881 transitions. [2023-11-23 20:32:16,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:16,151 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 6881 transitions. [2023-11-23 20:32:16,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 20:32:16,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:16,157 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, 1, 1] [2023-11-23 20:32:16,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:32:16,157 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:16,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:16,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1277833256, now seen corresponding path program 1 times [2023-11-23 20:32:16,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:16,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267378558] [2023-11-23 20:32:16,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:16,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:16,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:16,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267378558] [2023-11-23 20:32:16,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267378558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:16,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:16,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:32:16,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079079036] [2023-11-23 20:32:16,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:16,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:32:16,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:16,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:32:16,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:16,437 INFO L87 Difference]: Start difference. First operand 4390 states and 6881 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:17,840 INFO L93 Difference]: Finished difference Result 16231 states and 26323 transitions. [2023-11-23 20:32:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:32:17,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 1 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 69 [2023-11-23 20:32:17,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:17,962 INFO L225 Difference]: With dead ends: 16231 [2023-11-23 20:32:17,962 INFO L226 Difference]: Without dead ends: 11846 [2023-11-23 20:32:17,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:32:18,000 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1151 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:18,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 982 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 20:32:18,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11846 states. [2023-11-23 20:32:18,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11846 to 11218. [2023-11-23 20:32:18,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11218 states, 9859 states have (on average 1.4840247489603409) internal successors, (14631), 9651 states have internal predecessors, (14631), 938 states have call successors, (938), 348 states have call predecessors, (938), 420 states have return successors, (2390), 1219 states have call predecessors, (2390), 938 states have call successors, (2390) [2023-11-23 20:32:19,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11218 states to 11218 states and 17959 transitions. [2023-11-23 20:32:19,081 INFO L78 Accepts]: Start accepts. Automaton has 11218 states and 17959 transitions. Word has length 69 [2023-11-23 20:32:19,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:19,082 INFO L495 AbstractCegarLoop]: Abstraction has 11218 states and 17959 transitions. [2023-11-23 20:32:19,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 11218 states and 17959 transitions. [2023-11-23 20:32:19,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 20:32:19,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:19,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:19,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:32:19,088 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:19,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:19,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2730567, now seen corresponding path program 1 times [2023-11-23 20:32:19,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:19,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104929814] [2023-11-23 20:32:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:19,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:19,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:19,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:19,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104929814] [2023-11-23 20:32:19,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104929814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:19,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:19,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:32:19,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054410567] [2023-11-23 20:32:19,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:19,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:32:19,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:19,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:32:19,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:19,308 INFO L87 Difference]: Start difference. First operand 11218 states and 17959 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:21,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:21,606 INFO L93 Difference]: Finished difference Result 40743 states and 68001 transitions. [2023-11-23 20:32:21,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:32:21,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 1 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 69 [2023-11-23 20:32:21,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:21,971 INFO L225 Difference]: With dead ends: 40743 [2023-11-23 20:32:21,972 INFO L226 Difference]: Without dead ends: 29530 [2023-11-23 20:32:22,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:32:22,046 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 1126 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:22,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 1013 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 20:32:22,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29530 states. [2023-11-23 20:32:24,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29530 to 28198. [2023-11-23 20:32:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28198 states, 25017 states have (on average 1.4919055042571052) internal successors, (37323), 24295 states have internal predecessors, (37323), 2104 states have call successors, (2104), 820 states have call predecessors, (2104), 1076 states have return successors, (6738), 3083 states have call predecessors, (6738), 2104 states have call successors, (6738) [2023-11-23 20:32:24,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28198 states to 28198 states and 46165 transitions. [2023-11-23 20:32:24,935 INFO L78 Accepts]: Start accepts. Automaton has 28198 states and 46165 transitions. Word has length 69 [2023-11-23 20:32:24,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:24,935 INFO L495 AbstractCegarLoop]: Abstraction has 28198 states and 46165 transitions. [2023-11-23 20:32:24,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:24,937 INFO L276 IsEmpty]: Start isEmpty. Operand 28198 states and 46165 transitions. [2023-11-23 20:32:24,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 20:32:24,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:24,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:24,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 20:32:24,941 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:24,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:24,942 INFO L85 PathProgramCache]: Analyzing trace with hash 526051238, now seen corresponding path program 1 times [2023-11-23 20:32:24,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:24,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481620306] [2023-11-23 20:32:24,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:24,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:25,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:25,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481620306] [2023-11-23 20:32:25,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481620306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:25,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:25,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:32:25,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950957459] [2023-11-23 20:32:25,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:25,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:32:25,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:25,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:32:25,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:25,239 INFO L87 Difference]: Start difference. First operand 28198 states and 46165 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:29,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:29,276 INFO L93 Difference]: Finished difference Result 102223 states and 175783 transitions. [2023-11-23 20:32:29,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:32:29,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 1 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 69 [2023-11-23 20:32:29,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:29,765 INFO L225 Difference]: With dead ends: 102223 [2023-11-23 20:32:29,766 INFO L226 Difference]: Without dead ends: 74030 [2023-11-23 20:32:29,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:32:29,859 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1102 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:29,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 1044 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 20:32:29,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74030 states. [2023-11-23 20:32:35,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74030 to 71270. [2023-11-23 20:32:35,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71270 states, 63611 states have (on average 1.5008567700554936) internal successors, (95471), 61379 states have internal predecessors, (95471), 4838 states have call successors, (4838), 1980 states have call predecessors, (4838), 2820 states have return successors, (19110), 7911 states have call predecessors, (19110), 4838 states have call successors, (19110) [2023-11-23 20:32:35,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71270 states to 71270 states and 119419 transitions. [2023-11-23 20:32:35,656 INFO L78 Accepts]: Start accepts. Automaton has 71270 states and 119419 transitions. Word has length 69 [2023-11-23 20:32:35,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:35,657 INFO L495 AbstractCegarLoop]: Abstraction has 71270 states and 119419 transitions. [2023-11-23 20:32:35,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 71270 states and 119419 transitions. [2023-11-23 20:32:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 20:32:35,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:35,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:35,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 20:32:35,667 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:35,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:35,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1445025861, now seen corresponding path program 1 times [2023-11-23 20:32:35,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:35,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239917462] [2023-11-23 20:32:35,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:35,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:36,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:36,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239917462] [2023-11-23 20:32:36,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239917462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:36,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:36,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 20:32:36,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012838150] [2023-11-23 20:32:36,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:36,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:32:36,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:36,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:32:36,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:32:36,430 INFO L87 Difference]: Start difference. First operand 71270 states and 119419 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 20:32:42,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:42,298 INFO L93 Difference]: Finished difference Result 193093 states and 325910 transitions. [2023-11-23 20:32:42,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:32:42,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (5), 2 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 69 [2023-11-23 20:32:42,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:43,413 INFO L225 Difference]: With dead ends: 193093 [2023-11-23 20:32:43,414 INFO L226 Difference]: Without dead ends: 121829 [2023-11-23 20:32:43,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-23 20:32:43,655 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 763 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:43,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 713 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 20:32:43,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121829 states.