./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ --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 16f1bfcdafcb30da29b0067c09066abcd5ae81f862f6e318335df039804ff932 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:02:08,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:02:08,944 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:02:08,950 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:02:08,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:02:08,992 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:02:08,993 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:02:08,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:02:08,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:02:08,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:02:08,996 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:02:08,996 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:02:08,997 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:02:08,997 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:02:08,998 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:02:08,999 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:02:08,999 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:02:09,000 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:02:09,000 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:02:09,001 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:02:09,002 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:02:09,002 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:02:09,003 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:02:09,004 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:02:09,004 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:02:09,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:02:09,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:02:09,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:02:09,006 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:02:09,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:02:09,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:02:09,008 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:02:09,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:02:09,009 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:02:09,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:02:09,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:02:09,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:09,017 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:02:09,017 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:02:09,017 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:02:09,017 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:02:09,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:02:09,018 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:02:09,018 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:02:09,018 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:02:09,019 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_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16f1bfcdafcb30da29b0067c09066abcd5ae81f862f6e318335df039804ff932 [2023-11-19 05:02:09,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:02:09,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:02:09,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:02:09,322 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:02:09,322 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:02:09,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-11-19 05:02:12,371 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:02:12,777 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:02:12,777 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-11-19 05:02:12,798 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/data/f5fbe95b5/f12a89373a34454ebfa2416e242dc27c/FLAG8f36f491e [2023-11-19 05:02:12,814 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/data/f5fbe95b5/f12a89373a34454ebfa2416e242dc27c [2023-11-19 05:02:12,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:02:12,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:02:12,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:12,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:02:12,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:02:12,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:12" (1/1) ... [2023-11-19 05:02:12,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3bec9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:12, skipping insertion in model container [2023-11-19 05:02:12,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:12" (1/1) ... [2023-11-19 05:02:12,957 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:02:13,306 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8112,8125] [2023-11-19 05:02:13,397 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14224,14237] [2023-11-19 05:02:13,427 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16311,16324] [2023-11-19 05:02:13,444 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17335,17348] [2023-11-19 05:02:13,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:13,713 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:02:13,763 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8112,8125] [2023-11-19 05:02:13,784 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14224,14237] [2023-11-19 05:02:13,791 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16311,16324] [2023-11-19 05:02:13,796 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17335,17348] [2023-11-19 05:02:13,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:13,963 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:02:13,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:13 WrapperNode [2023-11-19 05:02:13,963 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:13,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:13,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:02:13,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:02:13,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:13" (1/1) ... [2023-11-19 05:02:14,008 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:13" (1/1) ... [2023-11-19 05:02:14,211 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2570 [2023-11-19 05:02:14,212 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:14,212 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:02:14,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:02:14,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:02:14,224 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:13" (1/1) ... [2023-11-19 05:02:14,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:13" (1/1) ... [2023-11-19 05:02:14,245 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:13" (1/1) ... [2023-11-19 05:02:14,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:13" (1/1) ... [2023-11-19 05:02:14,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:13" (1/1) ... [2023-11-19 05:02:14,328 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:13" (1/1) ... [2023-11-19 05:02:14,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:13" (1/1) ... [2023-11-19 05:02:14,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:13" (1/1) ... [2023-11-19 05:02:14,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:02:14,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:02:14,378 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:02:14,378 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:02:14,379 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:13" (1/1) ... [2023-11-19 05:02:14,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:14,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:14,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:02:14,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:02:14,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:02:14,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:02:14,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:02:14,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:02:14,668 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:02:14,671 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:02:16,337 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:02:16,536 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:02:16,536 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:02:16,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:16 BoogieIcfgContainer [2023-11-19 05:02:16,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:02:16,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:02:16,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:02:16,561 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:02:16,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:02:12" (1/3) ... [2023-11-19 05:02:16,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754b4419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:16, skipping insertion in model container [2023-11-19 05:02:16,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:13" (2/3) ... [2023-11-19 05:02:16,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754b4419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:16, skipping insertion in model container [2023-11-19 05:02:16,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:16" (3/3) ... [2023-11-19 05:02:16,568 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-11-19 05:02:16,587 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:02:16,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 05:02:16,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:02:16,680 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2fb71ee4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:02:16,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 05:02:16,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 411 states, 406 states have (on average 1.8694581280788178) internal successors, (759), 410 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:16,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 05:02:16,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:16,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:16,723 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:16,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:16,731 INFO L85 PathProgramCache]: Analyzing trace with hash 296688961, now seen corresponding path program 1 times [2023-11-19 05:02:16,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:16,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339603266] [2023-11-19 05:02:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:16,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:17,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:17,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:17,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339603266] [2023-11-19 05:02:17,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339603266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:17,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:17,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:17,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505198553] [2023-11-19 05:02:17,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:17,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:17,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:17,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:17,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:17,234 INFO L87 Difference]: Start difference. First operand has 411 states, 406 states have (on average 1.8694581280788178) internal successors, (759), 410 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:17,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:17,397 INFO L93 Difference]: Finished difference Result 603 states and 1066 transitions. [2023-11-19 05:02:17,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:17,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-19 05:02:17,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:17,416 INFO L225 Difference]: With dead ends: 603 [2023-11-19 05:02:17,416 INFO L226 Difference]: Without dead ends: 490 [2023-11-19 05:02:17,420 INFO L412 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 [2023-11-19 05:02:17,424 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 377 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:17,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 1230 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:17,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-11-19 05:02:17,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 484. [2023-11-19 05:02:17,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 480 states have (on average 1.3) internal successors, (624), 483 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 624 transitions. [2023-11-19 05:02:17,492 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 624 transitions. Word has length 48 [2023-11-19 05:02:17,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:17,493 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 624 transitions. [2023-11-19 05:02:17,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:17,494 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 624 transitions. [2023-11-19 05:02:17,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 05:02:17,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:17,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:17,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:02:17,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:17,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:17,498 INFO L85 PathProgramCache]: Analyzing trace with hash 152491643, now seen corresponding path program 1 times [2023-11-19 05:02:17,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:17,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699274590] [2023-11-19 05:02:17,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:17,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:17,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:17,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699274590] [2023-11-19 05:02:17,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699274590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:17,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:17,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:17,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870681412] [2023-11-19 05:02:17,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:17,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:17,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:17,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:17,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:17,626 INFO L87 Difference]: Start difference. First operand 484 states and 624 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:17,692 INFO L93 Difference]: Finished difference Result 799 states and 1064 transitions. [2023-11-19 05:02:17,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:17,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-19 05:02:17,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:17,698 INFO L225 Difference]: With dead ends: 799 [2023-11-19 05:02:17,698 INFO L226 Difference]: Without dead ends: 612 [2023-11-19 05:02:17,703 INFO L412 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 [2023-11-19 05:02:17,704 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 200 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:17,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 910 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:02:17,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2023-11-19 05:02:17,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 606. [2023-11-19 05:02:17,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 602 states have (on average 1.3172757475083057) internal successors, (793), 605 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 793 transitions. [2023-11-19 05:02:17,752 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 793 transitions. Word has length 48 [2023-11-19 05:02:17,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:17,753 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 793 transitions. [2023-11-19 05:02:17,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:17,754 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 793 transitions. [2023-11-19 05:02:17,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 05:02:17,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:17,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:17,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:02:17,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:17,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:17,769 INFO L85 PathProgramCache]: Analyzing trace with hash -283473766, now seen corresponding path program 1 times [2023-11-19 05:02:17,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:17,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709302936] [2023-11-19 05:02:17,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:17,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:17,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:17,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709302936] [2023-11-19 05:02:17,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709302936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:17,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:17,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:17,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739384947] [2023-11-19 05:02:17,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:17,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:17,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:17,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:17,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:17,983 INFO L87 Difference]: Start difference. First operand 606 states and 793 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:18,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:18,101 INFO L93 Difference]: Finished difference Result 1070 states and 1428 transitions. [2023-11-19 05:02:18,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:18,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-19 05:02:18,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:18,107 INFO L225 Difference]: With dead ends: 1070 [2023-11-19 05:02:18,107 INFO L226 Difference]: Without dead ends: 841 [2023-11-19 05:02:18,108 INFO L412 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 [2023-11-19 05:02:18,109 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 255 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:18,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 872 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:18,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-11-19 05:02:18,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 834. [2023-11-19 05:02:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 830 states have (on average 1.3240963855421686) internal successors, (1099), 833 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:18,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1099 transitions. [2023-11-19 05:02:18,139 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1099 transitions. Word has length 48 [2023-11-19 05:02:18,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:18,139 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 1099 transitions. [2023-11-19 05:02:18,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:18,142 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1099 transitions. [2023-11-19 05:02:18,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 05:02:18,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:18,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:18,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:02:18,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:18,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:18,147 INFO L85 PathProgramCache]: Analyzing trace with hash -427757648, now seen corresponding path program 1 times [2023-11-19 05:02:18,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:18,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055228783] [2023-11-19 05:02:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:18,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:18,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:18,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:18,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055228783] [2023-11-19 05:02:18,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055228783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:18,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:18,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:02:18,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355244063] [2023-11-19 05:02:18,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:18,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:02:18,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:18,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:02:18,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:18,350 INFO L87 Difference]: Start difference. First operand 834 states and 1099 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:18,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:18,758 INFO L93 Difference]: Finished difference Result 1737 states and 2332 transitions. [2023-11-19 05:02:18,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:02:18,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-19 05:02:18,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:18,765 INFO L225 Difference]: With dead ends: 1737 [2023-11-19 05:02:18,765 INFO L226 Difference]: Without dead ends: 1067 [2023-11-19 05:02:18,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:02:18,768 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1436 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:18,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 342 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:02:18,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2023-11-19 05:02:18,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1061. [2023-11-19 05:02:18,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1057 states have (on average 1.3405865657521288) internal successors, (1417), 1060 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:18,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1417 transitions. [2023-11-19 05:02:18,798 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1417 transitions. Word has length 48 [2023-11-19 05:02:18,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:18,799 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1417 transitions. [2023-11-19 05:02:18,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:18,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1417 transitions. [2023-11-19 05:02:18,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 05:02:18,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:18,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:18,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:02:18,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:18,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:18,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2032962725, now seen corresponding path program 1 times [2023-11-19 05:02:18,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:18,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122797316] [2023-11-19 05:02:18,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:18,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:18,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:18,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122797316] [2023-11-19 05:02:18,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122797316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:18,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:18,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:02:18,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317939735] [2023-11-19 05:02:18,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:18,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:02:18,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:18,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:02:18,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:18,930 INFO L87 Difference]: Start difference. First operand 1061 states and 1417 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:19,247 INFO L93 Difference]: Finished difference Result 2410 states and 3284 transitions. [2023-11-19 05:02:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:02:19,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-19 05:02:19,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:19,254 INFO L225 Difference]: With dead ends: 2410 [2023-11-19 05:02:19,254 INFO L226 Difference]: Without dead ends: 1528 [2023-11-19 05:02:19,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:02:19,257 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 1164 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:19,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 305 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:02:19,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2023-11-19 05:02:19,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1209. [2023-11-19 05:02:19,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1205 states have (on average 1.357676348547718) internal successors, (1636), 1208 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:19,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1636 transitions. [2023-11-19 05:02:19,293 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1636 transitions. Word has length 49 [2023-11-19 05:02:19,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:19,294 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 1636 transitions. [2023-11-19 05:02:19,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:19,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1636 transitions. [2023-11-19 05:02:19,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 05:02:19,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:19,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:19,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:02:19,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:19,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:19,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1695508102, now seen corresponding path program 1 times [2023-11-19 05:02:19,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:19,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026328754] [2023-11-19 05:02:19,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:19,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:19,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:19,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:19,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026328754] [2023-11-19 05:02:19,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026328754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:19,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:19,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:02:19,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070173908] [2023-11-19 05:02:19,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:19,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:02:19,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:19,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:02:19,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:19,492 INFO L87 Difference]: Start difference. First operand 1209 states and 1636 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:19,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:19,802 INFO L93 Difference]: Finished difference Result 2986 states and 4089 transitions. [2023-11-19 05:02:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:02:19,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-19 05:02:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:19,815 INFO L225 Difference]: With dead ends: 2986 [2023-11-19 05:02:19,815 INFO L226 Difference]: Without dead ends: 1894 [2023-11-19 05:02:19,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:02:19,828 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1054 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:19,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 256 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:02:19,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2023-11-19 05:02:19,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1887. [2023-11-19 05:02:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1883 states have (on average 1.358470525756771) internal successors, (2558), 1886 states have internal predecessors, (2558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:19,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2558 transitions. [2023-11-19 05:02:19,890 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2558 transitions. Word has length 49 [2023-11-19 05:02:19,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:19,890 INFO L495 AbstractCegarLoop]: Abstraction has 1887 states and 2558 transitions. [2023-11-19 05:02:19,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:19,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2558 transitions. [2023-11-19 05:02:19,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 05:02:19,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:19,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:19,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:02:19,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:19,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:19,894 INFO L85 PathProgramCache]: Analyzing trace with hash -949513779, now seen corresponding path program 1 times [2023-11-19 05:02:19,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:19,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401970225] [2023-11-19 05:02:19,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:19,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:20,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:20,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401970225] [2023-11-19 05:02:20,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401970225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:20,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:20,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:02:20,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166025725] [2023-11-19 05:02:20,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:20,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:02:20,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:20,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:02:20,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:02:20,108 INFO L87 Difference]: Start difference. First operand 1887 states and 2558 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:20,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:20,805 INFO L93 Difference]: Finished difference Result 6769 states and 9357 transitions. [2023-11-19 05:02:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:02:20,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-19 05:02:20,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:20,839 INFO L225 Difference]: With dead ends: 6769 [2023-11-19 05:02:20,840 INFO L226 Difference]: Without dead ends: 6334 [2023-11-19 05:02:20,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:02:20,843 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 2442 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2442 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:20,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2442 Valid, 507 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:02:20,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6334 states. [2023-11-19 05:02:20,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6334 to 1899. [2023-11-19 05:02:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1899 states, 1895 states have (on average 1.358311345646438) internal successors, (2574), 1898 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:20,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2574 transitions. [2023-11-19 05:02:20,937 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2574 transitions. Word has length 50 [2023-11-19 05:02:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:20,937 INFO L495 AbstractCegarLoop]: Abstraction has 1899 states and 2574 transitions. [2023-11-19 05:02:20,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:20,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2574 transitions. [2023-11-19 05:02:20,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 05:02:20,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:20,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:20,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:02:20,940 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:20,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:20,941 INFO L85 PathProgramCache]: Analyzing trace with hash 780000725, now seen corresponding path program 1 times [2023-11-19 05:02:20,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:20,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010300003] [2023-11-19 05:02:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:20,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:21,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:21,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010300003] [2023-11-19 05:02:21,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010300003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:21,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:21,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:02:21,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962219110] [2023-11-19 05:02:21,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:21,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:02:21,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:21,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:02:21,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:02:21,122 INFO L87 Difference]: Start difference. First operand 1899 states and 2574 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:21,853 INFO L93 Difference]: Finished difference Result 7536 states and 10411 transitions. [2023-11-19 05:02:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:02:21,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-19 05:02:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:21,891 INFO L225 Difference]: With dead ends: 7536 [2023-11-19 05:02:21,892 INFO L226 Difference]: Without dead ends: 6874 [2023-11-19 05:02:21,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:02:21,896 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 1638 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:21,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1638 Valid, 559 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:02:21,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6874 states. [2023-11-19 05:02:22,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6874 to 1921. [2023-11-19 05:02:22,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1917 states have (on average 1.3588941053729786) internal successors, (2605), 1920 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:22,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 2605 transitions. [2023-11-19 05:02:22,016 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 2605 transitions. Word has length 51 [2023-11-19 05:02:22,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:22,017 INFO L495 AbstractCegarLoop]: Abstraction has 1921 states and 2605 transitions. [2023-11-19 05:02:22,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 2605 transitions. [2023-11-19 05:02:22,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 05:02:22,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:22,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:22,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 05:02:22,021 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:22,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:22,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1979826028, now seen corresponding path program 1 times [2023-11-19 05:02:22,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:22,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674303702] [2023-11-19 05:02:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:22,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:22,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:22,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674303702] [2023-11-19 05:02:22,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674303702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:22,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:22,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:02:22,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412763870] [2023-11-19 05:02:22,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:22,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:02:22,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:22,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:02:22,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:02:22,210 INFO L87 Difference]: Start difference. First operand 1921 states and 2605 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:22,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:22,872 INFO L93 Difference]: Finished difference Result 6798 states and 9314 transitions. [2023-11-19 05:02:22,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:02:22,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-19 05:02:22,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:22,903 INFO L225 Difference]: With dead ends: 6798 [2023-11-19 05:02:22,903 INFO L226 Difference]: Without dead ends: 6001 [2023-11-19 05:02:22,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:02:22,906 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 2113 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2113 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:22,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2113 Valid, 486 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:02:22,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2023-11-19 05:02:22,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 1935. [2023-11-19 05:02:22,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1931 states have (on average 1.3583635422061109) internal successors, (2623), 1934 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 2623 transitions. [2023-11-19 05:02:23,005 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 2623 transitions. Word has length 51 [2023-11-19 05:02:23,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:23,006 INFO L495 AbstractCegarLoop]: Abstraction has 1935 states and 2623 transitions. [2023-11-19 05:02:23,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 2623 transitions. [2023-11-19 05:02:23,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-19 05:02:23,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:23,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:23,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 05:02:23,009 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:23,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:23,010 INFO L85 PathProgramCache]: Analyzing trace with hash 256982160, now seen corresponding path program 1 times [2023-11-19 05:02:23,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:23,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709215001] [2023-11-19 05:02:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:23,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:23,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:23,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709215001] [2023-11-19 05:02:23,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709215001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:23,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:23,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:02:23,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893458152] [2023-11-19 05:02:23,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:23,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:02:23,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:23,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:02:23,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:02:23,375 INFO L87 Difference]: Start difference. First operand 1935 states and 2623 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:24,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:24,128 INFO L93 Difference]: Finished difference Result 4913 states and 6718 transitions. [2023-11-19 05:02:24,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 05:02:24,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-19 05:02:24,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:24,138 INFO L225 Difference]: With dead ends: 4913 [2023-11-19 05:02:24,138 INFO L226 Difference]: Without dead ends: 3459 [2023-11-19 05:02:24,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:02:24,141 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 1341 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:24,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1341 Valid, 670 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:02:24,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2023-11-19 05:02:24,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 1935. [2023-11-19 05:02:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1931 states have (on average 1.3557742102537544) internal successors, (2618), 1934 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 2618 transitions. [2023-11-19 05:02:24,213 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 2618 transitions. Word has length 52 [2023-11-19 05:02:24,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:24,213 INFO L495 AbstractCegarLoop]: Abstraction has 1935 states and 2618 transitions. [2023-11-19 05:02:24,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:24,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 2618 transitions. [2023-11-19 05:02:24,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-19 05:02:24,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:24,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:24,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 05:02:24,217 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:24,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:24,217 INFO L85 PathProgramCache]: Analyzing trace with hash 112784842, now seen corresponding path program 1 times [2023-11-19 05:02:24,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:24,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866937487] [2023-11-19 05:02:24,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:24,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:24,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:24,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:24,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866937487] [2023-11-19 05:02:24,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866937487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:24,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:24,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 05:02:24,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091179138] [2023-11-19 05:02:24,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:24,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:02:24,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:24,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:02:24,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:02:24,527 INFO L87 Difference]: Start difference. First operand 1935 states and 2618 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:25,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:25,318 INFO L93 Difference]: Finished difference Result 6125 states and 8400 transitions. [2023-11-19 05:02:25,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:02:25,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-19 05:02:25,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:25,338 INFO L225 Difference]: With dead ends: 6125 [2023-11-19 05:02:25,339 INFO L226 Difference]: Without dead ends: 4781 [2023-11-19 05:02:25,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-19 05:02:25,342 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 868 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:25,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 1211 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:02:25,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2023-11-19 05:02:25,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 1906. [2023-11-19 05:02:25,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1902 states have (on average 1.3548895899053628) internal successors, (2577), 1905 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2577 transitions. [2023-11-19 05:02:25,441 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2577 transitions. Word has length 52 [2023-11-19 05:02:25,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:25,441 INFO L495 AbstractCegarLoop]: Abstraction has 1906 states and 2577 transitions. [2023-11-19 05:02:25,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:25,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2577 transitions. [2023-11-19 05:02:25,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-19 05:02:25,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:25,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:25,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 05:02:25,445 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:25,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:25,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1437836689, now seen corresponding path program 1 times [2023-11-19 05:02:25,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:25,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001729284] [2023-11-19 05:02:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:25,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:25,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:25,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001729284] [2023-11-19 05:02:25,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001729284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:25,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:25,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 05:02:25,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889099259] [2023-11-19 05:02:25,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:25,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:02:25,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:25,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:02:25,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:02:25,725 INFO L87 Difference]: Start difference. First operand 1906 states and 2577 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:26,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:26,515 INFO L93 Difference]: Finished difference Result 4066 states and 5515 transitions. [2023-11-19 05:02:26,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 05:02:26,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-19 05:02:26,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:26,526 INFO L225 Difference]: With dead ends: 4066 [2023-11-19 05:02:26,527 INFO L226 Difference]: Without dead ends: 4061 [2023-11-19 05:02:26,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-11-19 05:02:26,529 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 863 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:26,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1012 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:02:26,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2023-11-19 05:02:26,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 1906. [2023-11-19 05:02:26,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1902 states have (on average 1.353838065194532) internal successors, (2575), 1905 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:26,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2575 transitions. [2023-11-19 05:02:26,636 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2575 transitions. Word has length 52 [2023-11-19 05:02:26,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:26,636 INFO L495 AbstractCegarLoop]: Abstraction has 1906 states and 2575 transitions. [2023-11-19 05:02:26,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:26,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2575 transitions. [2023-11-19 05:02:26,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 05:02:26,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:26,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:26,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 05:02:26,639 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:26,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:26,640 INFO L85 PathProgramCache]: Analyzing trace with hash -563527398, now seen corresponding path program 1 times [2023-11-19 05:02:26,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:26,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468350906] [2023-11-19 05:02:26,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:26,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:26,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:26,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468350906] [2023-11-19 05:02:26,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468350906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:26,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:26,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:26,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647522537] [2023-11-19 05:02:26,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:26,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:26,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:26,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:26,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:26,712 INFO L87 Difference]: Start difference. First operand 1906 states and 2575 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:26,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:26,758 INFO L93 Difference]: Finished difference Result 2406 states and 3242 transitions. [2023-11-19 05:02:26,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:26,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-19 05:02:26,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:26,762 INFO L225 Difference]: With dead ends: 2406 [2023-11-19 05:02:26,762 INFO L226 Difference]: Without dead ends: 1875 [2023-11-19 05:02:26,763 INFO L412 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 [2023-11-19 05:02:26,765 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 215 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:26,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 558 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:02:26,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2023-11-19 05:02:26,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1873. [2023-11-19 05:02:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1869 states have (on average 1.3274478330658106) internal successors, (2481), 1872 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:26,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2481 transitions. [2023-11-19 05:02:26,806 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2481 transitions. Word has length 53 [2023-11-19 05:02:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:26,806 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 2481 transitions. [2023-11-19 05:02:26,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:26,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2481 transitions. [2023-11-19 05:02:26,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 05:02:26,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:26,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:26,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 05:02:26,814 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:26,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:26,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1607655498, now seen corresponding path program 1 times [2023-11-19 05:02:26,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:26,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052962254] [2023-11-19 05:02:26,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:26,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:26,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:26,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052962254] [2023-11-19 05:02:26,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052962254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:26,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:26,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:26,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859771677] [2023-11-19 05:02:26,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:26,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:26,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:26,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:26,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:26,895 INFO L87 Difference]: Start difference. First operand 1873 states and 2481 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:26,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:26,966 INFO L93 Difference]: Finished difference Result 2587 states and 3440 transitions. [2023-11-19 05:02:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:26,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-19 05:02:26,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:26,971 INFO L225 Difference]: With dead ends: 2587 [2023-11-19 05:02:26,971 INFO L226 Difference]: Without dead ends: 1880 [2023-11-19 05:02:26,972 INFO L412 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 [2023-11-19 05:02:26,973 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 163 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:26,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 621 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:26,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2023-11-19 05:02:27,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1873. [2023-11-19 05:02:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1869 states have (on average 1.308721241305511) internal successors, (2446), 1872 states have internal predecessors, (2446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:27,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2446 transitions. [2023-11-19 05:02:27,014 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2446 transitions. Word has length 53 [2023-11-19 05:02:27,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:27,015 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 2446 transitions. [2023-11-19 05:02:27,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:27,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2446 transitions. [2023-11-19 05:02:27,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 05:02:27,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:27,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:27,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 05:02:27,018 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:27,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:27,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1981252494, now seen corresponding path program 1 times [2023-11-19 05:02:27,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:27,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102239261] [2023-11-19 05:02:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:27,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:27,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:27,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:27,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102239261] [2023-11-19 05:02:27,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102239261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:27,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:27,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:27,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195558149] [2023-11-19 05:02:27,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:27,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:27,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:27,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:27,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:27,089 INFO L87 Difference]: Start difference. First operand 1873 states and 2446 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:27,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:27,136 INFO L93 Difference]: Finished difference Result 2624 states and 3442 transitions. [2023-11-19 05:02:27,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:27,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-19 05:02:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:27,141 INFO L225 Difference]: With dead ends: 2624 [2023-11-19 05:02:27,141 INFO L226 Difference]: Without dead ends: 1879 [2023-11-19 05:02:27,144 INFO L412 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 [2023-11-19 05:02:27,145 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 179 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:27,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 628 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:02:27,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2023-11-19 05:02:27,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1873. [2023-11-19 05:02:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1869 states have (on average 1.29266987693954) internal successors, (2416), 1872 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2416 transitions. [2023-11-19 05:02:27,188 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2416 transitions. Word has length 53 [2023-11-19 05:02:27,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:27,188 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 2416 transitions. [2023-11-19 05:02:27,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:27,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2416 transitions. [2023-11-19 05:02:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 05:02:27,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:27,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:27,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 05:02:27,192 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:27,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:27,192 INFO L85 PathProgramCache]: Analyzing trace with hash -702762787, now seen corresponding path program 1 times [2023-11-19 05:02:27,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:27,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557769208] [2023-11-19 05:02:27,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:27,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:27,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:27,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557769208] [2023-11-19 05:02:27,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557769208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:27,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:27,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:02:27,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742759184] [2023-11-19 05:02:27,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:27,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:02:27,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:27,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:02:27,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:27,347 INFO L87 Difference]: Start difference. First operand 1873 states and 2416 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:27,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:27,490 INFO L93 Difference]: Finished difference Result 1884 states and 2423 transitions. [2023-11-19 05:02:27,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:02:27,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-19 05:02:27,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:27,494 INFO L225 Difference]: With dead ends: 1884 [2023-11-19 05:02:27,495 INFO L226 Difference]: Without dead ends: 1717 [2023-11-19 05:02:27,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:02:27,496 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 591 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:27,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 593 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:27,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2023-11-19 05:02:27,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1708. [2023-11-19 05:02:27,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1704 states have (on average 1.2928403755868545) internal successors, (2203), 1707 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2203 transitions. [2023-11-19 05:02:27,534 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 2203 transitions. Word has length 54 [2023-11-19 05:02:27,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:27,535 INFO L495 AbstractCegarLoop]: Abstraction has 1708 states and 2203 transitions. [2023-11-19 05:02:27,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 2203 transitions. [2023-11-19 05:02:27,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 05:02:27,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:27,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:27,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 05:02:27,539 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:27,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:27,539 INFO L85 PathProgramCache]: Analyzing trace with hash 468606955, now seen corresponding path program 1 times [2023-11-19 05:02:27,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:27,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005325505] [2023-11-19 05:02:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:27,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:27,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:27,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005325505] [2023-11-19 05:02:27,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005325505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:27,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:27,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:27,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650332263] [2023-11-19 05:02:27,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:27,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:27,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:27,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:27,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:27,612 INFO L87 Difference]: Start difference. First operand 1708 states and 2203 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:27,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:27,679 INFO L93 Difference]: Finished difference Result 2690 states and 3481 transitions. [2023-11-19 05:02:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:27,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-19 05:02:27,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:27,684 INFO L225 Difference]: With dead ends: 2690 [2023-11-19 05:02:27,684 INFO L226 Difference]: Without dead ends: 1917 [2023-11-19 05:02:27,685 INFO L412 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 [2023-11-19 05:02:27,686 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 228 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:27,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 382 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:02:27,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2023-11-19 05:02:27,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1622. [2023-11-19 05:02:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1618 states have (on average 1.2904820766378244) internal successors, (2088), 1621 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2088 transitions. [2023-11-19 05:02:27,719 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2088 transitions. Word has length 55 [2023-11-19 05:02:27,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:27,720 INFO L495 AbstractCegarLoop]: Abstraction has 1622 states and 2088 transitions. [2023-11-19 05:02:27,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2088 transitions. [2023-11-19 05:02:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 05:02:27,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:27,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:27,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 05:02:27,723 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:27,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:27,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2013051481, now seen corresponding path program 1 times [2023-11-19 05:02:27,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:27,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43239793] [2023-11-19 05:02:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:27,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:27,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:27,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43239793] [2023-11-19 05:02:27,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43239793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:27,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:27,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:27,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807393592] [2023-11-19 05:02:27,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:27,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:27,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:27,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:27,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:27,777 INFO L87 Difference]: Start difference. First operand 1622 states and 2088 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:27,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:27,856 INFO L93 Difference]: Finished difference Result 2619 states and 3379 transitions. [2023-11-19 05:02:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:27,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-19 05:02:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:27,860 INFO L225 Difference]: With dead ends: 2619 [2023-11-19 05:02:27,860 INFO L226 Difference]: Without dead ends: 1888 [2023-11-19 05:02:27,862 INFO L412 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 [2023-11-19 05:02:27,862 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 199 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:27,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 302 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:27,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2023-11-19 05:02:27,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1514. [2023-11-19 05:02:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1510 states have (on average 1.2894039735099339) internal successors, (1947), 1513 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1947 transitions. [2023-11-19 05:02:27,894 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1947 transitions. Word has length 55 [2023-11-19 05:02:27,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:27,894 INFO L495 AbstractCegarLoop]: Abstraction has 1514 states and 1947 transitions. [2023-11-19 05:02:27,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1947 transitions. [2023-11-19 05:02:27,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 05:02:27,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:27,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:27,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 05:02:27,897 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:27,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:27,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1441162398, now seen corresponding path program 1 times [2023-11-19 05:02:27,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:27,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891998991] [2023-11-19 05:02:27,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:27,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:29,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:29,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:29,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891998991] [2023-11-19 05:02:29,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891998991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:29,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:29,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-19 05:02:29,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561237353] [2023-11-19 05:02:29,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:29,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 05:02:29,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:29,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 05:02:29,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:02:29,152 INFO L87 Difference]: Start difference. First operand 1514 states and 1947 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:31,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:31,864 INFO L93 Difference]: Finished difference Result 2725 states and 3493 transitions. [2023-11-19 05:02:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 05:02:31,864 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-19 05:02:31,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:31,870 INFO L225 Difference]: With dead ends: 2725 [2023-11-19 05:02:31,870 INFO L226 Difference]: Without dead ends: 2721 [2023-11-19 05:02:31,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2023-11-19 05:02:31,873 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1677 mSDsluCounter, 4321 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 4690 SdHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:31,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 4690 Invalid, 2092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2090 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 05:02:31,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2023-11-19 05:02:31,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 1526. [2023-11-19 05:02:31,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1522 states have (on average 1.2904073587385019) internal successors, (1964), 1525 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 1964 transitions. [2023-11-19 05:02:31,910 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 1964 transitions. Word has length 55 [2023-11-19 05:02:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:31,910 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 1964 transitions. [2023-11-19 05:02:31,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:31,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 1964 transitions. [2023-11-19 05:02:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 05:02:31,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:31,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:31,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 05:02:31,914 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:31,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:31,914 INFO L85 PathProgramCache]: Analyzing trace with hash -575345653, now seen corresponding path program 1 times [2023-11-19 05:02:31,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:31,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486153682] [2023-11-19 05:02:31,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:31,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:32,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:32,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:32,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486153682] [2023-11-19 05:02:32,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486153682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:32,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:32,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 05:02:32,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012652583] [2023-11-19 05:02:32,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:32,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 05:02:32,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:32,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 05:02:32,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:02:32,456 INFO L87 Difference]: Start difference. First operand 1526 states and 1964 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:33,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:33,050 INFO L93 Difference]: Finished difference Result 3276 states and 4235 transitions. [2023-11-19 05:02:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:02:33,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-19 05:02:33,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:33,057 INFO L225 Difference]: With dead ends: 3276 [2023-11-19 05:02:33,057 INFO L226 Difference]: Without dead ends: 2803 [2023-11-19 05:02:33,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:02:33,063 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1266 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:33,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 1364 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:02:33,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2023-11-19 05:02:33,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 1479. [2023-11-19 05:02:33,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1477 states have (on average 1.2924847664184158) internal successors, (1909), 1478 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:33,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1909 transitions. [2023-11-19 05:02:33,106 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1909 transitions. Word has length 55 [2023-11-19 05:02:33,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:33,106 INFO L495 AbstractCegarLoop]: Abstraction has 1479 states and 1909 transitions. [2023-11-19 05:02:33,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:33,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1909 transitions. [2023-11-19 05:02:33,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 05:02:33,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:33,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:33,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 05:02:33,109 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:33,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:33,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1981156404, now seen corresponding path program 1 times [2023-11-19 05:02:33,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:33,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768969069] [2023-11-19 05:02:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:33,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:33,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:33,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768969069] [2023-11-19 05:02:33,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768969069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:33,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:33,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:33,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914401081] [2023-11-19 05:02:33,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:33,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:33,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:33,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:33,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:33,276 INFO L87 Difference]: Start difference. First operand 1479 states and 1909 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:33,322 INFO L93 Difference]: Finished difference Result 2795 states and 3679 transitions. [2023-11-19 05:02:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:33,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-19 05:02:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:33,327 INFO L225 Difference]: With dead ends: 2795 [2023-11-19 05:02:33,327 INFO L226 Difference]: Without dead ends: 2137 [2023-11-19 05:02:33,329 INFO L412 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 [2023-11-19 05:02:33,330 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 98 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:33,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 375 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:02:33,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2023-11-19 05:02:33,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2015. [2023-11-19 05:02:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 2013 states have (on average 1.2911077993045206) internal successors, (2599), 2014 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:33,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 2599 transitions. [2023-11-19 05:02:33,401 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 2599 transitions. Word has length 55 [2023-11-19 05:02:33,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:33,402 INFO L495 AbstractCegarLoop]: Abstraction has 2015 states and 2599 transitions. [2023-11-19 05:02:33,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:33,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 2599 transitions. [2023-11-19 05:02:33,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 05:02:33,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:33,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:33,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 05:02:33,405 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:33,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash 847285262, now seen corresponding path program 1 times [2023-11-19 05:02:33,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:33,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300241083] [2023-11-19 05:02:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:33,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:34,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:34,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300241083] [2023-11-19 05:02:34,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300241083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:34,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:34,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-19 05:02:34,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036683420] [2023-11-19 05:02:34,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:34,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 05:02:34,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:34,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 05:02:34,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:02:34,346 INFO L87 Difference]: Start difference. First operand 2015 states and 2599 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:36,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:36,147 INFO L93 Difference]: Finished difference Result 4714 states and 6081 transitions. [2023-11-19 05:02:36,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 05:02:36,147 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-19 05:02:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:36,157 INFO L225 Difference]: With dead ends: 4714 [2023-11-19 05:02:36,157 INFO L226 Difference]: Without dead ends: 4402 [2023-11-19 05:02:36,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2023-11-19 05:02:36,162 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 1514 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:36,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 2810 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 05:02:36,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2023-11-19 05:02:36,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 2006. [2023-11-19 05:02:36,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 2005 states have (on average 1.290274314214464) internal successors, (2587), 2005 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:36,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2587 transitions. [2023-11-19 05:02:36,226 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2587 transitions. Word has length 56 [2023-11-19 05:02:36,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:36,227 INFO L495 AbstractCegarLoop]: Abstraction has 2006 states and 2587 transitions. [2023-11-19 05:02:36,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:36,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2587 transitions. [2023-11-19 05:02:36,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 05:02:36,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:36,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:36,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-19 05:02:36,232 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:36,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:36,233 INFO L85 PathProgramCache]: Analyzing trace with hash 986154502, now seen corresponding path program 1 times [2023-11-19 05:02:36,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:36,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062879124] [2023-11-19 05:02:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:36,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:36,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:36,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062879124] [2023-11-19 05:02:36,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062879124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:36,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:36,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:36,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038137781] [2023-11-19 05:02:36,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:36,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:36,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:36,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:36,386 INFO L87 Difference]: Start difference. First operand 2006 states and 2587 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:36,454 INFO L93 Difference]: Finished difference Result 4064 states and 5345 transitions. [2023-11-19 05:02:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:36,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-11-19 05:02:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:36,461 INFO L225 Difference]: With dead ends: 4064 [2023-11-19 05:02:36,461 INFO L226 Difference]: Without dead ends: 2916 [2023-11-19 05:02:36,463 INFO L412 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 [2023-11-19 05:02:36,464 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 83 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:36,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 361 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2023-11-19 05:02:36,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2622. [2023-11-19 05:02:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2622 states, 2621 states have (on average 1.2876764593666539) internal successors, (3375), 2621 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:36,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3375 transitions. [2023-11-19 05:02:36,529 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3375 transitions. Word has length 57 [2023-11-19 05:02:36,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:36,529 INFO L495 AbstractCegarLoop]: Abstraction has 2622 states and 3375 transitions. [2023-11-19 05:02:36,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:36,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3375 transitions. [2023-11-19 05:02:36,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 05:02:36,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:36,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:36,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-19 05:02:36,532 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:36,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:36,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1581843620, now seen corresponding path program 1 times [2023-11-19 05:02:36,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:36,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796965091] [2023-11-19 05:02:36,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:36,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:36,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:36,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796965091] [2023-11-19 05:02:36,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796965091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:36,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:36,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:36,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048482893] [2023-11-19 05:02:36,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:36,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:36,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:36,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:36,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:36,676 INFO L87 Difference]: Start difference. First operand 2622 states and 3375 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:36,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:36,738 INFO L93 Difference]: Finished difference Result 5490 states and 7189 transitions. [2023-11-19 05:02:36,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:36,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-19 05:02:36,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:36,746 INFO L225 Difference]: With dead ends: 5490 [2023-11-19 05:02:36,746 INFO L226 Difference]: Without dead ends: 3914 [2023-11-19 05:02:36,749 INFO L412 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 [2023-11-19 05:02:36,750 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 61 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:36,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 354 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:02:36,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2023-11-19 05:02:36,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3496. [2023-11-19 05:02:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3496 states, 3495 states have (on average 1.2804005722460658) internal successors, (4475), 3495 states have internal predecessors, (4475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 4475 transitions. [2023-11-19 05:02:36,816 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 4475 transitions. Word has length 61 [2023-11-19 05:02:36,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:36,816 INFO L495 AbstractCegarLoop]: Abstraction has 3496 states and 4475 transitions. [2023-11-19 05:02:36,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:36,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 4475 transitions. [2023-11-19 05:02:36,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 05:02:36,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:36,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:36,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-19 05:02:36,819 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:36,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:36,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1898307189, now seen corresponding path program 1 times [2023-11-19 05:02:36,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:36,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142401354] [2023-11-19 05:02:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:36,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:37,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:37,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142401354] [2023-11-19 05:02:37,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142401354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:37,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:37,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 05:02:37,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574919067] [2023-11-19 05:02:37,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:37,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:02:37,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:37,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:02:37,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:02:37,189 INFO L87 Difference]: Start difference. First operand 3496 states and 4475 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:37,524 INFO L93 Difference]: Finished difference Result 5667 states and 7211 transitions. [2023-11-19 05:02:37,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 05:02:37,525 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-19 05:02:37,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:37,536 INFO L225 Difference]: With dead ends: 5667 [2023-11-19 05:02:37,536 INFO L226 Difference]: Without dead ends: 5665 [2023-11-19 05:02:37,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2023-11-19 05:02:37,539 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 966 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:37,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 1497 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:02:37,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2023-11-19 05:02:37,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 3976. [2023-11-19 05:02:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3976 states, 3975 states have (on average 1.2732075471698112) internal successors, (5061), 3975 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3976 states to 3976 states and 5061 transitions. [2023-11-19 05:02:37,668 INFO L78 Accepts]: Start accepts. Automaton has 3976 states and 5061 transitions. Word has length 65 [2023-11-19 05:02:37,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:37,668 INFO L495 AbstractCegarLoop]: Abstraction has 3976 states and 5061 transitions. [2023-11-19 05:02:37,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:37,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3976 states and 5061 transitions. [2023-11-19 05:02:37,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 05:02:37,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:37,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:37,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-19 05:02:37,673 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:37,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:37,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1437550256, now seen corresponding path program 1 times [2023-11-19 05:02:37,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:37,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586843359] [2023-11-19 05:02:37,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:37,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:37,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:37,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586843359] [2023-11-19 05:02:37,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586843359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:37,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:37,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:02:37,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347842431] [2023-11-19 05:02:37,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:37,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:02:37,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:37,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:02:37,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:02:37,817 INFO L87 Difference]: Start difference. First operand 3976 states and 5061 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:38,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:38,258 INFO L93 Difference]: Finished difference Result 8286 states and 10604 transitions. [2023-11-19 05:02:38,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:02:38,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-11-19 05:02:38,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:38,273 INFO L225 Difference]: With dead ends: 8286 [2023-11-19 05:02:38,274 INFO L226 Difference]: Without dead ends: 7224 [2023-11-19 05:02:38,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:02:38,277 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 1349 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:38,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 354 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:02:38,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7224 states. [2023-11-19 05:02:38,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7224 to 3904. [2023-11-19 05:02:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3904 states, 3903 states have (on average 1.2741480912118883) internal successors, (4973), 3903 states have internal predecessors, (4973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 4973 transitions. [2023-11-19 05:02:38,375 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 4973 transitions. Word has length 68 [2023-11-19 05:02:38,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:38,375 INFO L495 AbstractCegarLoop]: Abstraction has 3904 states and 4973 transitions. [2023-11-19 05:02:38,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:38,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 4973 transitions. [2023-11-19 05:02:38,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 05:02:38,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:38,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:38,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-19 05:02:38,378 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:38,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:38,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2124146923, now seen corresponding path program 1 times [2023-11-19 05:02:38,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:38,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78534593] [2023-11-19 05:02:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:38,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:38,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:38,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78534593] [2023-11-19 05:02:38,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78534593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:38,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:38,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 05:02:38,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186690356] [2023-11-19 05:02:38,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:38,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:02:38,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:38,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:02:38,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:02:38,758 INFO L87 Difference]: Start difference. First operand 3904 states and 4973 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:39,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:39,084 INFO L93 Difference]: Finished difference Result 5247 states and 6685 transitions. [2023-11-19 05:02:39,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:02:39,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-11-19 05:02:39,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:39,095 INFO L225 Difference]: With dead ends: 5247 [2023-11-19 05:02:39,095 INFO L226 Difference]: Without dead ends: 5245 [2023-11-19 05:02:39,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:02:39,097 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 688 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:39,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 1418 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:02:39,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5245 states. [2023-11-19 05:02:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5245 to 4054. [2023-11-19 05:02:39,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4054 states, 4053 states have (on average 1.2721440907969406) internal successors, (5156), 4053 states have internal predecessors, (5156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:39,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4054 states to 4054 states and 5156 transitions. [2023-11-19 05:02:39,180 INFO L78 Accepts]: Start accepts. Automaton has 4054 states and 5156 transitions. Word has length 71 [2023-11-19 05:02:39,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:39,180 INFO L495 AbstractCegarLoop]: Abstraction has 4054 states and 5156 transitions. [2023-11-19 05:02:39,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:39,181 INFO L276 IsEmpty]: Start isEmpty. Operand 4054 states and 5156 transitions. [2023-11-19 05:02:39,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-19 05:02:39,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:39,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:39,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-19 05:02:39,184 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:39,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:39,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1458961780, now seen corresponding path program 1 times [2023-11-19 05:02:39,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:39,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430612148] [2023-11-19 05:02:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:39,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:39,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:39,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430612148] [2023-11-19 05:02:39,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430612148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:39,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:39,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 05:02:39,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345304579] [2023-11-19 05:02:39,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:39,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:02:39,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:39,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:02:39,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:02:39,597 INFO L87 Difference]: Start difference. First operand 4054 states and 5156 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:39,887 INFO L93 Difference]: Finished difference Result 5370 states and 6843 transitions. [2023-11-19 05:02:39,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:02:39,888 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-11-19 05:02:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:39,898 INFO L225 Difference]: With dead ends: 5370 [2023-11-19 05:02:39,898 INFO L226 Difference]: Without dead ends: 5368 [2023-11-19 05:02:39,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:02:39,901 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 726 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:39,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1469 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:02:39,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5368 states. [2023-11-19 05:02:39,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5368 to 4246. [2023-11-19 05:02:39,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4246 states, 4245 states have (on average 1.2711425206124853) internal successors, (5396), 4245 states have internal predecessors, (5396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:39,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4246 states to 4246 states and 5396 transitions. [2023-11-19 05:02:39,986 INFO L78 Accepts]: Start accepts. Automaton has 4246 states and 5396 transitions. Word has length 72 [2023-11-19 05:02:39,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:39,987 INFO L495 AbstractCegarLoop]: Abstraction has 4246 states and 5396 transitions. [2023-11-19 05:02:39,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:39,987 INFO L276 IsEmpty]: Start isEmpty. Operand 4246 states and 5396 transitions. [2023-11-19 05:02:39,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-19 05:02:39,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:39,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:39,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-19 05:02:39,991 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:39,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:39,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1398274844, now seen corresponding path program 1 times [2023-11-19 05:02:39,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:39,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881670803] [2023-11-19 05:02:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:39,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:41,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:41,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881670803] [2023-11-19 05:02:41,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881670803] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:02:41,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962575443] [2023-11-19 05:02:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:41,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:41,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:41,021 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:41,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:02:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:41,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 05:02:41,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:41,788 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 05:02:41,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:41,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962575443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:41,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:02:41,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 22 [2023-11-19 05:02:41,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450149078] [2023-11-19 05:02:41,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:41,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:02:41,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:41,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:02:41,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2023-11-19 05:02:41,791 INFO L87 Difference]: Start difference. First operand 4246 states and 5396 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:42,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:42,520 INFO L93 Difference]: Finished difference Result 8723 states and 11180 transitions. [2023-11-19 05:02:42,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:02:42,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-11-19 05:02:42,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:42,535 INFO L225 Difference]: With dead ends: 8723 [2023-11-19 05:02:42,535 INFO L226 Difference]: Without dead ends: 6915 [2023-11-19 05:02:42,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2023-11-19 05:02:42,539 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 635 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:42,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 823 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:02:42,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6915 states. [2023-11-19 05:02:42,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6915 to 4206. [2023-11-19 05:02:42,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4206 states, 4205 states have (on average 1.2720570749108204) internal successors, (5349), 4205 states have internal predecessors, (5349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4206 states to 4206 states and 5349 transitions. [2023-11-19 05:02:42,633 INFO L78 Accepts]: Start accepts. Automaton has 4206 states and 5349 transitions. Word has length 73 [2023-11-19 05:02:42,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:42,633 INFO L495 AbstractCegarLoop]: Abstraction has 4206 states and 5349 transitions. [2023-11-19 05:02:42,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:02:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4206 states and 5349 transitions. [2023-11-19 05:02:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 05:02:42,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:42,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:42,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:42,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-19 05:02:42,856 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:02:42,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:42,856 INFO L85 PathProgramCache]: Analyzing trace with hash -344359548, now seen corresponding path program 1 times [2023-11-19 05:02:42,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:42,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164878435] [2023-11-19 05:02:42,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:42,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:43,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:43,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164878435] [2023-11-19 05:02:43,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164878435] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:02:43,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544324622] [2023-11-19 05:02:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:43,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:43,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:43,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:43,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5e8f850-0bb7-4341-a719-dbf96746d5ee/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:02:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:44,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-19 05:02:44,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:46,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:46,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:02:52,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:52,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544324622] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:02:52,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [78181079] [2023-11-19 05:02:52,539 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2023-11-19 05:02:52,539 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:02:52,545 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:02:52,551 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:02:52,551 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs