./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2 --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 93c2f95927688290d9634a76e5cb5c078ca9f28d9ebb5a85520405b4d17220b1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:24:33,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:24:33,955 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:24:33,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:24:33,964 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:24:33,994 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:24:33,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:24:33,995 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:24:33,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:24:33,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:24:33,996 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:24:33,996 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:24:33,997 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:24:33,997 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:24:33,997 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:24:33,998 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:24:33,998 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:24:33,998 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:24:33,999 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:24:33,999 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:24:34,000 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:24:34,003 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:24:34,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:24:34,004 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:24:34,005 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:24:34,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:24:34,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:24:34,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:24:34,006 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:24:34,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:24:34,006 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:24:34,007 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:24:34,010 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:24:34,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:24:34,011 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:24:34,011 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:24:34,011 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:24:34,012 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:24:34,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:24:34,012 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:24:34,012 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:24:34,016 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:24:34,016 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:24:34,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:24:34,017 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:24:34,017 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:24:34,017 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:24:34,017 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_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93c2f95927688290d9634a76e5cb5c078ca9f28d9ebb5a85520405b4d17220b1 [2024-11-02 12:24:34,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:24:34,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:24:34,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:24:34,366 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:24:34,366 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:24:34,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c Unable to find full path for "g++" [2024-11-02 12:24:36,483 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:24:36,751 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:24:36,756 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c [2024-11-02 12:24:36,783 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/data/37db858dd/f96b5d25fe7e4eae9755e0246f989f49/FLAGc9de030a0 [2024-11-02 12:24:36,803 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/data/37db858dd/f96b5d25fe7e4eae9755e0246f989f49 [2024-11-02 12:24:36,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:24:36,810 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:24:36,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:24:36,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:24:36,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:24:36,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:24:36" (1/1) ... [2024-11-02 12:24:36,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4291fe7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:36, skipping insertion in model container [2024-11-02 12:24:36,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:24:36" (1/1) ... [2024-11-02 12:24:36,892 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:24:37,132 WARN L251 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_17edd994-7c37-4bcb-818d-4a864a2335d5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c[911,924] [2024-11-02 12:24:37,215 WARN L251 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_17edd994-7c37-4bcb-818d-4a864a2335d5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c[8416,8429] [2024-11-02 12:24:37,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:24:37,341 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:24:37,355 WARN L251 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_17edd994-7c37-4bcb-818d-4a864a2335d5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c[911,924] [2024-11-02 12:24:37,405 WARN L251 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_17edd994-7c37-4bcb-818d-4a864a2335d5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c[8416,8429] [2024-11-02 12:24:37,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:24:37,501 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:24:37,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:37 WrapperNode [2024-11-02 12:24:37,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:24:37,503 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:24:37,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:24:37,504 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:24:37,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:37" (1/1) ... [2024-11-02 12:24:37,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:37" (1/1) ... [2024-11-02 12:24:37,594 INFO L138 Inliner]: procedures = 73, calls = 88, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 926 [2024-11-02 12:24:37,595 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:24:37,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:24:37,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:24:37,598 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:24:37,615 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:37" (1/1) ... [2024-11-02 12:24:37,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:37" (1/1) ... [2024-11-02 12:24:37,624 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:37" (1/1) ... [2024-11-02 12:24:37,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:37" (1/1) ... [2024-11-02 12:24:37,641 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:37" (1/1) ... [2024-11-02 12:24:37,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:37" (1/1) ... [2024-11-02 12:24:37,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:37" (1/1) ... [2024-11-02 12:24:37,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:37" (1/1) ... [2024-11-02 12:24:37,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:24:37,696 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:24:37,696 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:24:37,696 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:24:37,697 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:37" (1/1) ... [2024-11-02 12:24:37,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:24:37,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:37,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:24:37,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:24:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:24:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-02 12:24:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-02 12:24:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-02 12:24:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-02 12:24:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-02 12:24:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-02 12:24:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-02 12:24:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-02 12:24:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-02 12:24:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-02 12:24:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-02 12:24:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-02 12:24:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-02 12:24:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-02 12:24:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-02 12:24:37,815 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-02 12:24:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-02 12:24:37,816 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-02 12:24:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-02 12:24:37,816 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-02 12:24:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-02 12:24:37,817 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-02 12:24:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:24:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-02 12:24:37,818 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-02 12:24:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-02 12:24:37,818 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-02 12:24:37,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:24:37,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:24:37,821 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-02 12:24:37,821 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-02 12:24:38,022 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:24:38,025 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:24:39,162 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2024-11-02 12:24:39,163 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2024-11-02 12:24:39,370 INFO L? ?]: Removed 112 outVars from TransFormulas that were not future-live. [2024-11-02 12:24:39,373 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:24:39,939 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:24:39,939 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-02 12:24:39,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:39 BoogieIcfgContainer [2024-11-02 12:24:39,940 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:24:39,942 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:24:39,942 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:24:39,946 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:24:39,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:24:36" (1/3) ... [2024-11-02 12:24:39,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e3f617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:24:39, skipping insertion in model container [2024-11-02 12:24:39,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:24:37" (2/3) ... [2024-11-02 12:24:39,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e3f617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:24:39, skipping insertion in model container [2024-11-02 12:24:39,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:24:39" (3/3) ... [2024-11-02 12:24:39,951 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.09.cil-1.c [2024-11-02 12:24:39,971 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:24:39,972 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-02 12:24:40,067 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:24:40,074 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;@7bbeafd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:24:40,074 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-02 12:24:40,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 244 states, 188 states have (on average 1.5053191489361701) internal successors, (283), 194 states have internal predecessors, (283), 39 states have call successors, (39), 14 states have call predecessors, (39), 14 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-02 12:24:40,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-02 12:24:40,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:40,096 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] [2024-11-02 12:24:40,097 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:40,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:40,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1815360929, now seen corresponding path program 1 times [2024-11-02 12:24:40,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:40,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163411431] [2024-11-02 12:24:40,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:40,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:40,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:40,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:40,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163411431] [2024-11-02 12:24:40,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163411431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:40,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:40,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:24:40,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526993493] [2024-11-02 12:24:40,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:40,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:24:40,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:40,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:24:40,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:24:40,687 INFO L87 Difference]: Start difference. First operand has 244 states, 188 states have (on average 1.5053191489361701) internal successors, (283), 194 states have internal predecessors, (283), 39 states have call successors, (39), 14 states have call predecessors, (39), 14 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-02 12:24:41,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:41,333 INFO L93 Difference]: Finished difference Result 611 states and 900 transitions. [2024-11-02 12:24:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:24:41,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 44 [2024-11-02 12:24:41,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:41,348 INFO L225 Difference]: With dead ends: 611 [2024-11-02 12:24:41,349 INFO L226 Difference]: Without dead ends: 368 [2024-11-02 12:24:41,353 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 [2024-11-02 12:24:41,357 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 412 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:41,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 619 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:24:41,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-02 12:24:41,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 357. [2024-11-02 12:24:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 269 states have (on average 1.4237918215613383) internal successors, (383), 273 states have internal predecessors, (383), 59 states have call successors, (59), 28 states have call predecessors, (59), 27 states have return successors, (60), 57 states have call predecessors, (60), 57 states have call successors, (60) [2024-11-02 12:24:41,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 502 transitions. [2024-11-02 12:24:41,444 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 502 transitions. Word has length 44 [2024-11-02 12:24:41,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:41,445 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 502 transitions. [2024-11-02 12:24:41,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-02 12:24:41,445 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 502 transitions. [2024-11-02 12:24:41,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-02 12:24:41,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:41,448 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] [2024-11-02 12:24:41,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:24:41,448 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:41,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash 2067080412, now seen corresponding path program 1 times [2024-11-02 12:24:41,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:41,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6826286] [2024-11-02 12:24:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:41,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:41,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:41,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6826286] [2024-11-02 12:24:41,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6826286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:41,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:41,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:24:41,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685807380] [2024-11-02 12:24:41,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:41,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:24:41,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:41,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:24:41,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:24:41,631 INFO L87 Difference]: Start difference. First operand 357 states and 502 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-02 12:24:42,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:42,787 INFO L93 Difference]: Finished difference Result 894 states and 1225 transitions. [2024-11-02 12:24:42,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:24:42,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 45 [2024-11-02 12:24:42,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:42,792 INFO L225 Difference]: With dead ends: 894 [2024-11-02 12:24:42,792 INFO L226 Difference]: Without dead ends: 428 [2024-11-02 12:24:42,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:24:42,800 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 898 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:42,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 1035 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-02 12:24:42,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-02 12:24:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 343. [2024-11-02 12:24:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 255 states have (on average 1.3725490196078431) internal successors, (350), 259 states have internal predecessors, (350), 59 states have call successors, (59), 28 states have call predecessors, (59), 27 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-02 12:24:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 466 transitions. [2024-11-02 12:24:42,857 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 466 transitions. Word has length 45 [2024-11-02 12:24:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:42,858 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 466 transitions. [2024-11-02 12:24:42,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-02 12:24:42,858 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 466 transitions. [2024-11-02 12:24:42,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-02 12:24:42,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:42,860 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] [2024-11-02 12:24:42,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:24:42,861 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:42,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:42,862 INFO L85 PathProgramCache]: Analyzing trace with hash -445889240, now seen corresponding path program 1 times [2024-11-02 12:24:42,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:42,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479657462] [2024-11-02 12:24:42,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:42,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:42,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:42,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479657462] [2024-11-02 12:24:42,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479657462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:42,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:42,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:24:42,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250777911] [2024-11-02 12:24:42,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:42,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:24:42,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:42,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:24:42,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:24:42,977 INFO L87 Difference]: Start difference. First operand 343 states and 466 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-02 12:24:43,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:43,894 INFO L93 Difference]: Finished difference Result 809 states and 1074 transitions. [2024-11-02 12:24:43,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:24:43,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 46 [2024-11-02 12:24:43,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:43,900 INFO L225 Difference]: With dead ends: 809 [2024-11-02 12:24:43,900 INFO L226 Difference]: Without dead ends: 632 [2024-11-02 12:24:43,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:24:43,903 INFO L432 NwaCegarLoop]: 393 mSDtfsCounter, 806 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:43,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 995 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 12:24:43,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2024-11-02 12:24:43,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 607. [2024-11-02 12:24:43,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 436 states have (on average 1.305045871559633) internal successors, (569), 440 states have internal predecessors, (569), 108 states have call successors, (108), 62 states have call predecessors, (108), 61 states have return successors, (123), 106 states have call predecessors, (123), 106 states have call successors, (123) [2024-11-02 12:24:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 800 transitions. [2024-11-02 12:24:43,970 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 800 transitions. Word has length 46 [2024-11-02 12:24:43,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:43,971 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 800 transitions. [2024-11-02 12:24:43,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-02 12:24:43,972 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 800 transitions. [2024-11-02 12:24:43,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-02 12:24:43,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:43,974 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] [2024-11-02 12:24:43,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:24:43,974 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:43,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:43,975 INFO L85 PathProgramCache]: Analyzing trace with hash 787235040, now seen corresponding path program 1 times [2024-11-02 12:24:43,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:43,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726769005] [2024-11-02 12:24:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:43,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:44,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:44,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726769005] [2024-11-02 12:24:44,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726769005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:44,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:44,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:24:44,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351758024] [2024-11-02 12:24:44,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:44,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:44,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:44,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:44,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:44,040 INFO L87 Difference]: Start difference. First operand 607 states and 800 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:24:44,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:44,195 INFO L93 Difference]: Finished difference Result 608 states and 801 transitions. [2024-11-02 12:24:44,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:44,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2024-11-02 12:24:44,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:44,198 INFO L225 Difference]: With dead ends: 608 [2024-11-02 12:24:44,198 INFO L226 Difference]: Without dead ends: 164 [2024-11-02 12:24:44,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:44,201 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 310 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:44,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 273 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:24:44,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-02 12:24:44,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-02 12:24:44,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 134 states have (on average 1.4701492537313432) internal successors, (197), 135 states have internal predecessors, (197), 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) [2024-11-02 12:24:44,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 243 transitions. [2024-11-02 12:24:44,215 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 243 transitions. Word has length 50 [2024-11-02 12:24:44,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:44,215 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 243 transitions. [2024-11-02 12:24:44,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:24:44,216 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 243 transitions. [2024-11-02 12:24:44,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-02 12:24:44,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:44,218 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] [2024-11-02 12:24:44,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:24:44,218 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:44,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:44,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1852349890, now seen corresponding path program 1 times [2024-11-02 12:24:44,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:44,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941439224] [2024-11-02 12:24:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:44,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:24:44,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:44,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941439224] [2024-11-02 12:24:44,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941439224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:44,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:44,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:24:44,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301647258] [2024-11-02 12:24:44,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:44,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:24:44,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:44,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:24:44,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:24:44,372 INFO L87 Difference]: Start difference. First operand 164 states and 243 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-02 12:24:45,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:45,234 INFO L93 Difference]: Finished difference Result 927 states and 1461 transitions. [2024-11-02 12:24:45,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:24:45,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 58 [2024-11-02 12:24:45,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:45,240 INFO L225 Difference]: With dead ends: 927 [2024-11-02 12:24:45,240 INFO L226 Difference]: Without dead ends: 769 [2024-11-02 12:24:45,241 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 [2024-11-02 12:24:45,242 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 1096 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:45,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 1025 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:24:45,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2024-11-02 12:24:45,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 758. [2024-11-02 12:24:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 631 states have (on average 1.4690966719492868) internal successors, (927), 635 states have internal predecessors, (927), 96 states have call successors, (96), 30 states have call predecessors, (96), 30 states have return successors, (146), 93 states have call predecessors, (146), 96 states have call successors, (146) [2024-11-02 12:24:45,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1169 transitions. [2024-11-02 12:24:45,309 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1169 transitions. Word has length 58 [2024-11-02 12:24:45,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:45,309 INFO L471 AbstractCegarLoop]: Abstraction has 758 states and 1169 transitions. [2024-11-02 12:24:45,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-02 12:24:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1169 transitions. [2024-11-02 12:24:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-02 12:24:45,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:45,314 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:45,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:24:45,315 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:45,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:45,315 INFO L85 PathProgramCache]: Analyzing trace with hash -408271019, now seen corresponding path program 1 times [2024-11-02 12:24:45,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:45,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713409535] [2024-11-02 12:24:45,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:45,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:45,532 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 12:24:45,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:45,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713409535] [2024-11-02 12:24:45,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713409535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:24:45,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166811116] [2024-11-02 12:24:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:45,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:45,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:45,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:24:45,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:24:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:45,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:24:45,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:24:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-02 12:24:45,906 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:24:45,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166811116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:45,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:24:45,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-02 12:24:45,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347657526] [2024-11-02 12:24:45,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:45,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:45,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:45,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:45,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:24:45,912 INFO L87 Difference]: Start difference. First operand 758 states and 1169 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:24:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:46,222 INFO L93 Difference]: Finished difference Result 2246 states and 3562 transitions. [2024-11-02 12:24:46,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:46,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2024-11-02 12:24:46,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:46,235 INFO L225 Difference]: With dead ends: 2246 [2024-11-02 12:24:46,235 INFO L226 Difference]: Without dead ends: 1494 [2024-11-02 12:24:46,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:24:46,240 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 215 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:46,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 391 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:24:46,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2024-11-02 12:24:46,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1487. [2024-11-02 12:24:46,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1243 states have (on average 1.4641995172968625) internal successors, (1820), 1250 states have internal predecessors, (1820), 183 states have call successors, (183), 60 states have call predecessors, (183), 60 states have return successors, (279), 177 states have call predecessors, (279), 183 states have call successors, (279) [2024-11-02 12:24:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2282 transitions. [2024-11-02 12:24:46,356 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2282 transitions. Word has length 116 [2024-11-02 12:24:46,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:46,356 INFO L471 AbstractCegarLoop]: Abstraction has 1487 states and 2282 transitions. [2024-11-02 12:24:46,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:24:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2282 transitions. [2024-11-02 12:24:46,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-02 12:24:46,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:46,361 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:46,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:24:46,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:46,562 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:46,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:46,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1380160147, now seen corresponding path program 1 times [2024-11-02 12:24:46,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:46,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731591068] [2024-11-02 12:24:46,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:46,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 12:24:46,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:46,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731591068] [2024-11-02 12:24:46,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731591068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:24:46,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145578759] [2024-11-02 12:24:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:46,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:46,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:46,819 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:24:46,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:24:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:47,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:24:47,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:24:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-02 12:24:47,121 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:24:47,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145578759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:47,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:24:47,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-02 12:24:47,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413102178] [2024-11-02 12:24:47,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:47,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:47,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:47,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:47,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:24:47,126 INFO L87 Difference]: Start difference. First operand 1487 states and 2282 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:24:47,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:47,501 INFO L93 Difference]: Finished difference Result 4418 states and 6966 transitions. [2024-11-02 12:24:47,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:47,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2024-11-02 12:24:47,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:47,519 INFO L225 Difference]: With dead ends: 4418 [2024-11-02 12:24:47,520 INFO L226 Difference]: Without dead ends: 2937 [2024-11-02 12:24:47,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:24:47,528 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 206 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:47,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 391 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:24:47,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2024-11-02 12:24:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2925. [2024-11-02 12:24:47,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2452 states have (on average 1.4584013050570963) internal successors, (3576), 2465 states have internal predecessors, (3576), 352 states have call successors, (352), 120 states have call predecessors, (352), 120 states have return successors, (536), 340 states have call predecessors, (536), 352 states have call successors, (536) [2024-11-02 12:24:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4464 transitions. [2024-11-02 12:24:47,779 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4464 transitions. Word has length 116 [2024-11-02 12:24:47,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:47,780 INFO L471 AbstractCegarLoop]: Abstraction has 2925 states and 4464 transitions. [2024-11-02 12:24:47,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:24:47,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4464 transitions. [2024-11-02 12:24:47,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-02 12:24:47,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:47,791 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:47,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 12:24:47,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:47,992 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:47,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:47,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1062008427, now seen corresponding path program 1 times [2024-11-02 12:24:47,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:47,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855708621] [2024-11-02 12:24:47,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:47,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 12:24:48,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:48,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855708621] [2024-11-02 12:24:48,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855708621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:24:48,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040012954] [2024-11-02 12:24:48,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:48,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:48,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:48,151 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:24:48,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:24:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:48,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:24:48,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:24:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-02 12:24:48,422 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:24:48,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040012954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:48,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:24:48,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-02 12:24:48,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429515473] [2024-11-02 12:24:48,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:48,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:48,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:48,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:48,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:24:48,428 INFO L87 Difference]: Start difference. First operand 2925 states and 4464 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:24:49,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:49,080 INFO L93 Difference]: Finished difference Result 8702 states and 13633 transitions. [2024-11-02 12:24:49,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:49,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2024-11-02 12:24:49,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:49,128 INFO L225 Difference]: With dead ends: 8702 [2024-11-02 12:24:49,128 INFO L226 Difference]: Without dead ends: 5783 [2024-11-02 12:24:49,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:24:49,146 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 212 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:49,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 391 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:24:49,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5783 states. [2024-11-02 12:24:49,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5783 to 5761. [2024-11-02 12:24:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5761 states, 4840 states have (on average 1.4520661157024792) internal successors, (7028), 4865 states have internal predecessors, (7028), 680 states have call successors, (680), 240 states have call predecessors, (680), 240 states have return successors, (1032), 656 states have call predecessors, (1032), 680 states have call successors, (1032) [2024-11-02 12:24:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 8740 transitions. [2024-11-02 12:24:49,628 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 8740 transitions. Word has length 116 [2024-11-02 12:24:49,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:49,629 INFO L471 AbstractCegarLoop]: Abstraction has 5761 states and 8740 transitions. [2024-11-02 12:24:49,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:24:49,629 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 8740 transitions. [2024-11-02 12:24:49,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-02 12:24:49,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:49,638 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:49,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 12:24:49,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:49,840 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:49,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:49,841 INFO L85 PathProgramCache]: Analyzing trace with hash -818301161, now seen corresponding path program 1 times [2024-11-02 12:24:49,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:49,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023219620] [2024-11-02 12:24:49,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:49,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 12:24:50,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:50,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023219620] [2024-11-02 12:24:50,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023219620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:24:50,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657801073] [2024-11-02 12:24:50,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:50,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:50,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:24:50,042 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:24:50,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:24:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:50,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:24:50,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:24:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-02 12:24:50,371 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:24:50,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657801073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:50,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:24:50,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-02 12:24:50,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860593104] [2024-11-02 12:24:50,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:50,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:50,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:50,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:50,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:24:50,373 INFO L87 Difference]: Start difference. First operand 5761 states and 8740 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:24:51,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:51,338 INFO L93 Difference]: Finished difference Result 17150 states and 26685 transitions. [2024-11-02 12:24:51,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:51,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2024-11-02 12:24:51,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:51,414 INFO L225 Difference]: With dead ends: 17150 [2024-11-02 12:24:51,415 INFO L226 Difference]: Without dead ends: 11395 [2024-11-02 12:24:51,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:24:51,441 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 200 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:51,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 391 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:24:51,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11395 states. [2024-11-02 12:24:52,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11395 to 11353. [2024-11-02 12:24:52,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11353 states, 9556 states have (on average 1.4453746337379656) internal successors, (13812), 9605 states have internal predecessors, (13812), 1316 states have call successors, (1316), 480 states have call predecessors, (1316), 480 states have return successors, (1988), 1268 states have call predecessors, (1988), 1316 states have call successors, (1988) [2024-11-02 12:24:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11353 states to 11353 states and 17116 transitions. [2024-11-02 12:24:52,334 INFO L78 Accepts]: Start accepts. Automaton has 11353 states and 17116 transitions. Word has length 116 [2024-11-02 12:24:52,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:52,335 INFO L471 AbstractCegarLoop]: Abstraction has 11353 states and 17116 transitions. [2024-11-02 12:24:52,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:24:52,335 INFO L276 IsEmpty]: Start isEmpty. Operand 11353 states and 17116 transitions. [2024-11-02 12:24:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-02 12:24:52,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:52,352 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:52,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-02 12:24:52,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17edd994-7c37-4bcb-818d-4a864a2335d5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:24:52,554 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:52,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:52,555 INFO L85 PathProgramCache]: Analyzing trace with hash -934864999, now seen corresponding path program 1 times [2024-11-02 12:24:52,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:52,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891030563] [2024-11-02 12:24:52,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:52,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-02 12:24:52,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:52,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891030563] [2024-11-02 12:24:52,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891030563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:52,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:52,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:24:52,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369626730] [2024-11-02 12:24:52,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:52,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:52,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:52,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:52,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:52,739 INFO L87 Difference]: Start difference. First operand 11353 states and 17116 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 12:24:53,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:53,963 INFO L93 Difference]: Finished difference Result 23163 states and 35661 transitions. [2024-11-02 12:24:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:53,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2024-11-02 12:24:53,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:54,104 INFO L225 Difference]: With dead ends: 23163 [2024-11-02 12:24:54,104 INFO L226 Difference]: Without dead ends: 14073 [2024-11-02 12:24:54,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:54,151 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 110 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:54,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 525 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:24:54,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14073 states. [2024-11-02 12:24:55,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14073 to 13257. [2024-11-02 12:24:55,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13257 states, 11396 states have (on average 1.4717444717444716) internal successors, (16772), 11445 states have internal predecessors, (16772), 1348 states have call successors, (1348), 512 states have call predecessors, (1348), 512 states have return successors, (2020), 1300 states have call predecessors, (2020), 1348 states have call successors, (2020) [2024-11-02 12:24:55,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13257 states to 13257 states and 20140 transitions. [2024-11-02 12:24:55,339 INFO L78 Accepts]: Start accepts. Automaton has 13257 states and 20140 transitions. Word has length 116 [2024-11-02 12:24:55,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:55,340 INFO L471 AbstractCegarLoop]: Abstraction has 13257 states and 20140 transitions. [2024-11-02 12:24:55,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 12:24:55,340 INFO L276 IsEmpty]: Start isEmpty. Operand 13257 states and 20140 transitions. [2024-11-02 12:24:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-02 12:24:55,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:55,375 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:55,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:24:55,376 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:55,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:55,377 INFO L85 PathProgramCache]: Analyzing trace with hash 619911086, now seen corresponding path program 1 times [2024-11-02 12:24:55,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:55,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991059101] [2024-11-02 12:24:55,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:55,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:55,485 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-02 12:24:55,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:55,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991059101] [2024-11-02 12:24:55,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991059101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:55,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:55,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:24:55,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709800693] [2024-11-02 12:24:55,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:55,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:55,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:55,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:55,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:55,487 INFO L87 Difference]: Start difference. First operand 13257 states and 20140 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-02 12:24:56,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:24:56,925 INFO L93 Difference]: Finished difference Result 39406 states and 61073 transitions. [2024-11-02 12:24:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:24:56,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 158 [2024-11-02 12:24:56,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:24:57,056 INFO L225 Difference]: With dead ends: 39406 [2024-11-02 12:24:57,056 INFO L226 Difference]: Without dead ends: 26155 [2024-11-02 12:24:57,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:57,097 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 203 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:24:57,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 393 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:24:57,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26155 states. [2024-11-02 12:24:59,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26155 to 26041. [2024-11-02 12:24:59,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26041 states, 22404 states have (on average 1.4627745045527585) internal successors, (32772), 22501 states have internal predecessors, (32772), 2612 states have call successors, (2612), 1024 states have call predecessors, (2612), 1024 states have return successors, (3892), 2516 states have call predecessors, (3892), 2612 states have call successors, (3892) [2024-11-02 12:24:59,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26041 states to 26041 states and 39276 transitions. [2024-11-02 12:24:59,245 INFO L78 Accepts]: Start accepts. Automaton has 26041 states and 39276 transitions. Word has length 158 [2024-11-02 12:24:59,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:24:59,247 INFO L471 AbstractCegarLoop]: Abstraction has 26041 states and 39276 transitions. [2024-11-02 12:24:59,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-02 12:24:59,247 INFO L276 IsEmpty]: Start isEmpty. Operand 26041 states and 39276 transitions. [2024-11-02 12:24:59,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-02 12:24:59,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:24:59,320 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:24:59,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-02 12:24:59,320 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:24:59,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:24:59,321 INFO L85 PathProgramCache]: Analyzing trace with hash -679574233, now seen corresponding path program 1 times [2024-11-02 12:24:59,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:24:59,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705501524] [2024-11-02 12:24:59,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:24:59,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:24:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:24:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-02 12:24:59,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:24:59,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705501524] [2024-11-02 12:24:59,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705501524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:24:59,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:24:59,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:24:59,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753833606] [2024-11-02 12:24:59,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:24:59,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:24:59,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:24:59,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:24:59,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:24:59,480 INFO L87 Difference]: Start difference. First operand 26041 states and 39276 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-02 12:25:02,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:25:02,909 INFO L93 Difference]: Finished difference Result 77406 states and 119009 transitions. [2024-11-02 12:25:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:25:02,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 158 [2024-11-02 12:25:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:25:03,233 INFO L225 Difference]: With dead ends: 77406 [2024-11-02 12:25:03,233 INFO L226 Difference]: Without dead ends: 51371 [2024-11-02 12:25:03,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:25:03,349 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 205 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:25:03,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 393 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:25:03,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51371 states.