./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 a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.10.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/bin/utaipan-verify-YMUCfTKeje --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 0.2.5-dev-a016563 [2024-11-09 01:13:38,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:13:38,668 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 01:13:38,674 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:13:38,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:13:38,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:13:38,702 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:13:38,702 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:13:38,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:13:38,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:13:38,704 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:13:38,704 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:13:38,705 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:13:38,705 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:13:38,706 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:13:38,706 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:13:38,707 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:13:38,707 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:13:38,708 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:13:38,708 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:13:38,709 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:13:38,709 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:13:38,726 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:13:38,727 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 01:13:38,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:13:38,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:13:38,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:13:38,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:13:38,733 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 01:13:38,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:13:38,733 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 01:13:38,734 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:13:38,734 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:13:38,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 01:13:38,736 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:13:38,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:13:38,737 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:13:38,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:13:38,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:13:38,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:13:38,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:13:38,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 01:13:38,740 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:13:38,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:13:38,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:13:38,742 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:13:38,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:13:38,742 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_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 [2024-11-09 01:13:39,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:13:39,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:13:39,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:13:39,109 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:13:39,110 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:13:39,111 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/systemc/transmitter.10.cil.c Unable to find full path for "g++" [2024-11-09 01:13:41,494 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:13:41,784 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:13:41,785 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/sv-benchmarks/c/systemc/transmitter.10.cil.c [2024-11-09 01:13:41,807 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/bin/utaipan-verify-YMUCfTKeje/data/dd3f2dfa7/948389bcb9ca4fd2a28c77f1a9c4f5ba/FLAGc8798072a [2024-11-09 01:13:41,825 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/bin/utaipan-verify-YMUCfTKeje/data/dd3f2dfa7/948389bcb9ca4fd2a28c77f1a9c4f5ba [2024-11-09 01:13:41,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:13:41,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:13:41,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:13:41,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:13:41,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:13:41,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:13:41" (1/1) ... [2024-11-09 01:13:41,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26133753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:13:41, skipping insertion in model container [2024-11-09 01:13:41,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:13:41" (1/1) ... [2024-11-09 01:13:41,911 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:13:42,134 WARN L250 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_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/sv-benchmarks/c/systemc/transmitter.10.cil.c[706,719] [2024-11-09 01:13:42,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:13:42,305 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:13:42,320 WARN L250 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_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/sv-benchmarks/c/systemc/transmitter.10.cil.c[706,719] [2024-11-09 01:13:42,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:13:42,436 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:13:42,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:13:42 WrapperNode [2024-11-09 01:13:42,437 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:13:42,438 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:13:42,439 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:13:42,439 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:13:42,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:13:42" (1/1) ... [2024-11-09 01:13:42,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:13:42" (1/1) ... [2024-11-09 01:13:42,537 INFO L138 Inliner]: procedures = 48, calls = 60, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 727 [2024-11-09 01:13:42,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:13:42,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:13:42,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:13:42,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:13:42,552 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:13:42" (1/1) ... [2024-11-09 01:13:42,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:13:42" (1/1) ... [2024-11-09 01:13:42,558 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:13:42" (1/1) ... [2024-11-09 01:13:42,559 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:13:42" (1/1) ... [2024-11-09 01:13:42,578 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:13:42" (1/1) ... [2024-11-09 01:13:42,605 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:13:42" (1/1) ... [2024-11-09 01:13:42,612 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:13:42" (1/1) ... [2024-11-09 01:13:42,620 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:13:42" (1/1) ... [2024-11-09 01:13:42,635 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:13:42,636 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:13:42,636 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:13:42,636 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:13:42,639 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:13:42" (1/1) ... [2024-11-09 01:13:42,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:13:42,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:13:42,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:13:42,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bd3ecc8-5572-408c-87ae-3f74867fc6e0/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:13:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:13:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-09 01:13:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-09 01:13:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-09 01:13:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-09 01:13:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-09 01:13:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-09 01:13:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-09 01:13:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-09 01:13:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-09 01:13:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-09 01:13:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:13:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-09 01:13:42,749 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-09 01:13:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:13:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:13:42,888 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:13:42,890 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:13:44,147 INFO L? ?]: Removed 85 outVars from TransFormulas that were not future-live. [2024-11-09 01:13:44,148 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:13:44,776 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:13:44,777 INFO L316 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-09 01:13:44,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:13:44 BoogieIcfgContainer [2024-11-09 01:13:44,779 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:13:44,783 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:13:44,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:13:44,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:13:44,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:13:41" (1/3) ... [2024-11-09 01:13:44,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f53901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:13:44, skipping insertion in model container [2024-11-09 01:13:44,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:13:42" (2/3) ... [2024-11-09 01:13:44,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f53901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:13:44, skipping insertion in model container [2024-11-09 01:13:44,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:13:44" (3/3) ... [2024-11-09 01:13:44,794 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.10.cil.c [2024-11-09 01:13:44,821 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:13:44,821 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 01:13:44,920 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:13:44,929 INFO L333 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, 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;@7bfca25c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:13:44,930 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 01:13:44,936 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) [2024-11-09 01:13:44,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 01:13:44,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:44,956 INFO L215 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] [2024-11-09 01:13:44,957 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:44,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:44,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1311659829, now seen corresponding path program 1 times [2024-11-09 01:13:44,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:44,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301703666] [2024-11-09 01:13:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:44,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:45,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:45,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301703666] [2024-11-09 01:13:45,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301703666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:45,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:13:45,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 01:13:45,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032667548] [2024-11-09 01:13:45,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:45,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:13:45,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:45,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:13:45,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:13:45,705 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) [2024-11-09 01:13:46,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:46,433 INFO L93 Difference]: Finished difference Result 512 states and 785 transitions. [2024-11-09 01:13:46,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:13:46,437 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 [2024-11-09 01:13:46,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:46,456 INFO L225 Difference]: With dead ends: 512 [2024-11-09 01:13:46,457 INFO L226 Difference]: Without dead ends: 338 [2024-11-09 01:13:46,464 INFO L431 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 [2024-11-09 01:13:46,470 INFO L432 NwaCegarLoop]: 409 mSDtfsCounter, 463 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:46,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 734 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 01:13:46,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-09 01:13:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 334. [2024-11-09 01:13:46,599 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) [2024-11-09 01:13:46,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 495 transitions. [2024-11-09 01:13:46,610 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 495 transitions. Word has length 69 [2024-11-09 01:13:46,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:46,611 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 495 transitions. [2024-11-09 01:13:46,612 INFO L472 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) [2024-11-09 01:13:46,612 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 495 transitions. [2024-11-09 01:13:46,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 01:13:46,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:46,619 INFO L215 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] [2024-11-09 01:13:46,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 01:13:46,621 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:46,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:46,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1951976652, now seen corresponding path program 1 times [2024-11-09 01:13:46,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:46,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651559296] [2024-11-09 01:13:46,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:46,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:46,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:46,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651559296] [2024-11-09 01:13:46,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651559296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:46,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:13:46,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 01:13:46,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116290867] [2024-11-09 01:13:46,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:46,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 01:13:46,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:46,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 01:13:46,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:13:46,969 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) [2024-11-09 01:13:48,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:48,182 INFO L93 Difference]: Finished difference Result 1945 states and 3035 transitions. [2024-11-09 01:13:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:13:48,183 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 [2024-11-09 01:13:48,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:48,211 INFO L225 Difference]: With dead ends: 1945 [2024-11-09 01:13:48,211 INFO L226 Difference]: Without dead ends: 1616 [2024-11-09 01:13:48,219 INFO L431 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 [2024-11-09 01:13:48,224 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 1184 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:48,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 923 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 01:13:48,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2024-11-09 01:13:48,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1580. [2024-11-09 01:13:48,440 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) [2024-11-09 01:13:48,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2425 transitions. [2024-11-09 01:13:48,460 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2425 transitions. Word has length 69 [2024-11-09 01:13:48,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:48,461 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 2425 transitions. [2024-11-09 01:13:48,462 INFO L472 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) [2024-11-09 01:13:48,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2425 transitions. [2024-11-09 01:13:48,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 01:13:48,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:48,470 INFO L215 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] [2024-11-09 01:13:48,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 01:13:48,470 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:48,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:48,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1678198157, now seen corresponding path program 1 times [2024-11-09 01:13:48,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:48,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990988008] [2024-11-09 01:13:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:48,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:48,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:48,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:48,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990988008] [2024-11-09 01:13:48,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990988008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:48,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:13:48,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 01:13:48,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629718298] [2024-11-09 01:13:48,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:48,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 01:13:48,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:48,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 01:13:48,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:13:48,783 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) [2024-11-09 01:13:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:49,988 INFO L93 Difference]: Finished difference Result 6243 states and 9861 transitions. [2024-11-09 01:13:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:13:49,990 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 [2024-11-09 01:13:49,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:50,025 INFO L225 Difference]: With dead ends: 6243 [2024-11-09 01:13:50,025 INFO L226 Difference]: Without dead ends: 4668 [2024-11-09 01:13:50,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 01:13:50,036 INFO L432 NwaCegarLoop]: 417 mSDtfsCounter, 1186 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:50,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 919 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 01:13:50,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4668 states. [2024-11-09 01:13:50,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4668 to 4390. [2024-11-09 01:13:50,455 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) [2024-11-09 01:13:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 6881 transitions. [2024-11-09 01:13:50,490 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 6881 transitions. Word has length 69 [2024-11-09 01:13:50,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:50,491 INFO L471 AbstractCegarLoop]: Abstraction has 4390 states and 6881 transitions. [2024-11-09 01:13:50,491 INFO L472 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) [2024-11-09 01:13:50,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 6881 transitions. [2024-11-09 01:13:50,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 01:13:50,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:50,498 INFO L215 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] [2024-11-09 01:13:50,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 01:13:50,499 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:50,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:50,499 INFO L85 PathProgramCache]: Analyzing trace with hash -52138900, now seen corresponding path program 1 times [2024-11-09 01:13:50,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:50,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168173080] [2024-11-09 01:13:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:50,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:50,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:50,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168173080] [2024-11-09 01:13:50,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168173080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:50,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:13:50,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 01:13:50,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173432491] [2024-11-09 01:13:50,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:50,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 01:13:50,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:50,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 01:13:50,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:13:50,714 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) [2024-11-09 01:13:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:52,197 INFO L93 Difference]: Finished difference Result 16231 states and 26323 transitions. [2024-11-09 01:13:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:13:52,198 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 [2024-11-09 01:13:52,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:52,297 INFO L225 Difference]: With dead ends: 16231 [2024-11-09 01:13:52,297 INFO L226 Difference]: Without dead ends: 11846 [2024-11-09 01:13:52,324 INFO L431 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 [2024-11-09 01:13:52,325 INFO L432 NwaCegarLoop]: 456 mSDtfsCounter, 1153 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:52,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 982 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 01:13:52,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11846 states. [2024-11-09 01:13:53,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11846 to 11218. [2024-11-09 01:13:53,245 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) [2024-11-09 01:13:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11218 states to 11218 states and 17959 transitions. [2024-11-09 01:13:53,311 INFO L78 Accepts]: Start accepts. Automaton has 11218 states and 17959 transitions. Word has length 69 [2024-11-09 01:13:53,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:53,312 INFO L471 AbstractCegarLoop]: Abstraction has 11218 states and 17959 transitions. [2024-11-09 01:13:53,312 INFO L472 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) [2024-11-09 01:13:53,312 INFO L276 IsEmpty]: Start isEmpty. Operand 11218 states and 17959 transitions. [2024-11-09 01:13:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 01:13:53,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:53,317 INFO L215 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] [2024-11-09 01:13:53,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 01:13:53,318 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:53,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:53,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1327241589, now seen corresponding path program 1 times [2024-11-09 01:13:53,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:53,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444634524] [2024-11-09 01:13:53,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:53,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:53,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:53,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444634524] [2024-11-09 01:13:53,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444634524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:53,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:13:53,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 01:13:53,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237737308] [2024-11-09 01:13:53,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:53,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 01:13:53,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:53,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 01:13:53,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:13:53,488 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) [2024-11-09 01:13:56,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:13:56,154 INFO L93 Difference]: Finished difference Result 40743 states and 68001 transitions. [2024-11-09 01:13:56,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:13:56,156 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 [2024-11-09 01:13:56,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:13:56,433 INFO L225 Difference]: With dead ends: 40743 [2024-11-09 01:13:56,434 INFO L226 Difference]: Without dead ends: 29530 [2024-11-09 01:13:56,493 INFO L431 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 [2024-11-09 01:13:56,494 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 1126 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 01:13:56,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 1013 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 01:13:56,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29530 states. [2024-11-09 01:13:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29530 to 28198. [2024-11-09 01:13:58,624 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) [2024-11-09 01:13:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28198 states to 28198 states and 46165 transitions. [2024-11-09 01:13:59,024 INFO L78 Accepts]: Start accepts. Automaton has 28198 states and 46165 transitions. Word has length 69 [2024-11-09 01:13:59,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:13:59,028 INFO L471 AbstractCegarLoop]: Abstraction has 28198 states and 46165 transitions. [2024-11-09 01:13:59,029 INFO L472 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) [2024-11-09 01:13:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 28198 states and 46165 transitions. [2024-11-09 01:13:59,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 01:13:59,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:13:59,033 INFO L215 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] [2024-11-09 01:13:59,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 01:13:59,034 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:13:59,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:13:59,035 INFO L85 PathProgramCache]: Analyzing trace with hash -803920918, now seen corresponding path program 1 times [2024-11-09 01:13:59,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:13:59,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140392933] [2024-11-09 01:13:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:13:59,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:13:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:13:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:13:59,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:13:59,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140392933] [2024-11-09 01:13:59,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140392933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:13:59,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:13:59,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 01:13:59,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315809837] [2024-11-09 01:13:59,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:13:59,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 01:13:59,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:13:59,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 01:13:59,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:13:59,276 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) [2024-11-09 01:14:03,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:14:03,499 INFO L93 Difference]: Finished difference Result 102223 states and 175783 transitions. [2024-11-09 01:14:03,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:14:03,501 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 [2024-11-09 01:14:03,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:14:04,428 INFO L225 Difference]: With dead ends: 102223 [2024-11-09 01:14:04,428 INFO L226 Difference]: Without dead ends: 74030 [2024-11-09 01:14:04,548 INFO L431 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 [2024-11-09 01:14:04,550 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 1102 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 01:14:04,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1044 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 01:14:04,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74030 states. [2024-11-09 01:14:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74030 to 71270. [2024-11-09 01:14:09,831 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) [2024-11-09 01:14:10,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71270 states to 71270 states and 119419 transitions. [2024-11-09 01:14:10,454 INFO L78 Accepts]: Start accepts. Automaton has 71270 states and 119419 transitions. Word has length 69 [2024-11-09 01:14:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:14:10,455 INFO L471 AbstractCegarLoop]: Abstraction has 71270 states and 119419 transitions. [2024-11-09 01:14:10,455 INFO L472 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) [2024-11-09 01:14:10,455 INFO L276 IsEmpty]: Start isEmpty. Operand 71270 states and 119419 transitions. [2024-11-09 01:14:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 01:14:10,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:14:10,462 INFO L215 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] [2024-11-09 01:14:10,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 01:14:10,463 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:14:10,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:14:10,464 INFO L85 PathProgramCache]: Analyzing trace with hash 115053705, now seen corresponding path program 1 times [2024-11-09 01:14:10,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:14:10,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95195265] [2024-11-09 01:14:10,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:14:10,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:14:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:14:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:14:10,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:14:10,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95195265] [2024-11-09 01:14:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95195265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:14:10,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:14:10,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 01:14:10,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538087232] [2024-11-09 01:14:10,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:14:10,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 01:14:10,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:14:10,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 01:14:10,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:14:10,843 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) [2024-11-09 01:14:17,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:14:17,022 INFO L93 Difference]: Finished difference Result 193093 states and 325910 transitions. [2024-11-09 01:14:17,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 01:14:17,022 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 [2024-11-09 01:14:17,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:14:17,891 INFO L225 Difference]: With dead ends: 193093 [2024-11-09 01:14:17,891 INFO L226 Difference]: Without dead ends: 121829 [2024-11-09 01:14:18,097 INFO L431 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 [2024-11-09 01:14:18,101 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 763 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 01:14:18,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 713 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 01:14:18,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121829 states. [2024-11-09 01:14:26,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121829 to 113854. [2024-11-09 01:14:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113854 states, 101758 states have (on average 1.4887969496255822) internal successors, (151497), 98677 states have internal predecessors, (151497), 7255 states have call successors, (7255), 3160 states have call predecessors, (7255), 4840 states have return successors, (28663), 12017 states have call predecessors, (28663), 7255 states have call successors, (28663) [2024-11-09 01:14:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113854 states to 113854 states and 187415 transitions. [2024-11-09 01:14:28,417 INFO L78 Accepts]: Start accepts. Automaton has 113854 states and 187415 transitions. Word has length 69 [2024-11-09 01:14:28,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:14:28,422 INFO L471 AbstractCegarLoop]: Abstraction has 113854 states and 187415 transitions. [2024-11-09 01:14:28,422 INFO L472 AbstractCegarLoop]: INTERPOLANT 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) [2024-11-09 01:14:28,422 INFO L276 IsEmpty]: Start isEmpty. Operand 113854 states and 187415 transitions. [2024-11-09 01:14:28,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 01:14:28,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:14:28,425 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:14:28,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 01:14:28,425 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:14:28,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:14:28,427 INFO L85 PathProgramCache]: Analyzing trace with hash 291600057, now seen corresponding path program 1 times [2024-11-09 01:14:28,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:14:28,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176715374] [2024-11-09 01:14:28,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:14:28,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:14:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:14:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:14:28,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:14:28,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176715374] [2024-11-09 01:14:28,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176715374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:14:28,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:14:28,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 01:14:28,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324647627] [2024-11-09 01:14:28,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:14:28,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 01:14:28,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:14:28,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 01:14:28,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:14:28,714 INFO L87 Difference]: Start difference. First operand 113854 states and 187415 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2024-11-09 01:14:38,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:14:38,784 INFO L93 Difference]: Finished difference Result 345563 states and 570667 transitions. [2024-11-09 01:14:38,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 01:14:38,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 71 [2024-11-09 01:14:38,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted.