./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5de8a6e48c671522e021c00f8053da339f3153b1fcc0b54263671efa3814086b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:32:08,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:32:09,028 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:32:09,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:32:09,038 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:32:09,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:32:09,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:32:09,086 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:32:09,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:32:09,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:32:09,093 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:32:09,095 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:32:09,095 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:32:09,097 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:32:09,098 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:32:09,098 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:32:09,098 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:32:09,099 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:32:09,099 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:32:09,100 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:32:09,100 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:32:09,101 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:32:09,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:32:09,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:32:09,103 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:32:09,104 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:32:09,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:32:09,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:32:09,105 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:32:09,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:32:09,107 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:32:09,107 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:32:09,108 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:32:09,108 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:32:09,108 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:32:09,109 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:32:09,109 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:32:09,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:09,110 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:32:09,110 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:32:09,110 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:32:09,111 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:32:09,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:32:09,111 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:32:09,112 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:32:09,112 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:32:09,112 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:32:09,113 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_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5de8a6e48c671522e021c00f8053da339f3153b1fcc0b54263671efa3814086b [2023-11-23 21:32:09,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:32:09,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:32:09,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:32:09,460 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:32:09,461 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:32:09,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2023-11-23 21:32:12,646 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:32:13,194 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:32:13,195 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2023-11-23 21:32:13,240 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/bin/utaipan-verify-mE87zJ7Ire/data/be671185c/44722607a9774a348462fce4dd6e51b7/FLAG3402c6b36 [2023-11-23 21:32:13,260 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/bin/utaipan-verify-mE87zJ7Ire/data/be671185c/44722607a9774a348462fce4dd6e51b7 [2023-11-23 21:32:13,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:32:13,268 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:32:13,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:13,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:32:13,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:32:13,279 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:13" (1/1) ... [2023-11-23 21:32:13,280 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2470788a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:13, skipping insertion in model container [2023-11-23 21:32:13,280 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:13" (1/1) ... [2023-11-23 21:32:13,431 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:13,841 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_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8424,8437] [2023-11-23 21:32:13,883 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_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12951,12964] [2023-11-23 21:32:13,930 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_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20701,20714] [2023-11-23 21:32:13,972 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_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27792,27805] [2023-11-23 21:32:14,070 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_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49016,49029] [2023-11-23 21:32:14,315 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_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80107,80120] [2023-11-23 21:32:14,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:14,591 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:32:14,644 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_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8424,8437] [2023-11-23 21:32:14,670 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_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12951,12964] [2023-11-23 21:32:14,702 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_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20701,20714] [2023-11-23 21:32:14,718 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_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27792,27805] [2023-11-23 21:32:14,770 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_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49016,49029] [2023-11-23 21:32:14,833 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_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80107,80120] [2023-11-23 21:32:14,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:14,992 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:32:14,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:14 WrapperNode [2023-11-23 21:32:14,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:14,995 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:14,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:32:14,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:32:15,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:14" (1/1) ... [2023-11-23 21:32:15,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:14" (1/1) ... [2023-11-23 21:32:15,257 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6418 [2023-11-23 21:32:15,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:15,259 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:32:15,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:32:15,260 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:32:15,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:14" (1/1) ... [2023-11-23 21:32:15,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:14" (1/1) ... [2023-11-23 21:32:15,295 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:14" (1/1) ... [2023-11-23 21:32:15,295 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:14" (1/1) ... [2023-11-23 21:32:15,381 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:14" (1/1) ... [2023-11-23 21:32:15,406 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:14" (1/1) ... [2023-11-23 21:32:15,421 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:14" (1/1) ... [2023-11-23 21:32:15,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:14" (1/1) ... [2023-11-23 21:32:15,457 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:32:15,458 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:32:15,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:32:15,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:32:15,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:14" (1/1) ... [2023-11-23 21:32:15,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:15,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:32:15,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:32:15,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0048ca6f-4e36-41b8-9551-e2e1c2588b5b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:32:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:32:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:32:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:32:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:32:15,870 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:32:15,873 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:32:19,407 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:32:19,980 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:32:19,981 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:32:19,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:19 BoogieIcfgContainer [2023-11-23 21:32:19,983 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:32:19,986 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:32:19,986 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:32:19,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:32:19,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:32:13" (1/3) ... [2023-11-23 21:32:19,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df42c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:19, skipping insertion in model container [2023-11-23 21:32:19,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:14" (2/3) ... [2023-11-23 21:32:19,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df42c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:19, skipping insertion in model container [2023-11-23 21:32:19,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:19" (3/3) ... [2023-11-23 21:32:19,993 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2023-11-23 21:32:20,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:32:20,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-23 21:32:20,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:32:20,097 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;@2faa5871, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:32:20,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-23 21:32:20,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 1234 states, 1227 states have (on average 1.771801140994295) internal successors, (2174), 1233 states have internal predecessors, (2174), 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) [2023-11-23 21:32:20,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:32:20,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:20,134 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] [2023-11-23 21:32:20,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:20,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:20,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2092473724, now seen corresponding path program 1 times [2023-11-23 21:32:20,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:20,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712331433] [2023-11-23 21:32:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:20,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:20,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:20,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712331433] [2023-11-23 21:32:20,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712331433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:20,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:20,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:32:20,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804234327] [2023-11-23 21:32:20,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:20,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:32:20,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:20,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:32:20,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:20,942 INFO L87 Difference]: Start difference. First operand has 1234 states, 1227 states have (on average 1.771801140994295) internal successors, (2174), 1233 states have internal predecessors, (2174), 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 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2023-11-23 21:32:22,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:22,845 INFO L93 Difference]: Finished difference Result 2365 states and 4064 transitions. [2023-11-23 21:32:22,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:32:22,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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 [2023-11-23 21:32:22,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:22,879 INFO L225 Difference]: With dead ends: 2365 [2023-11-23 21:32:22,880 INFO L226 Difference]: Without dead ends: 1494 [2023-11-23 21:32:22,889 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 [2023-11-23 21:32:22,893 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 6657 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6657 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:22,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6657 Valid, 1450 Invalid, 1193 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 21:32:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2023-11-23 21:32:23,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1488. [2023-11-23 21:32:23,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1482 states have (on average 1.2793522267206479) internal successors, (1896), 1487 states have internal predecessors, (1896), 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) [2023-11-23 21:32:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1896 transitions. [2023-11-23 21:32:23,053 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1896 transitions. Word has length 51 [2023-11-23 21:32:23,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:23,053 INFO L495 AbstractCegarLoop]: Abstraction has 1488 states and 1896 transitions. [2023-11-23 21:32:23,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2023-11-23 21:32:23,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1896 transitions. [2023-11-23 21:32:23,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-23 21:32:23,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:23,059 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] [2023-11-23 21:32:23,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:32:23,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:23,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:23,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1158227955, now seen corresponding path program 1 times [2023-11-23 21:32:23,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:23,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294794368] [2023-11-23 21:32:23,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:23,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:23,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:23,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294794368] [2023-11-23 21:32:23,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294794368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:23,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:23,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:32:23,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058250280] [2023-11-23 21:32:23,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:23,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:32:23,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:23,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:32:23,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:23,319 INFO L87 Difference]: Start difference. First operand 1488 states and 1896 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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) [2023-11-23 21:32:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:24,475 INFO L93 Difference]: Finished difference Result 2955 states and 3772 transitions. [2023-11-23 21:32:24,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:32:24,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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 [2023-11-23 21:32:24,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:24,486 INFO L225 Difference]: With dead ends: 2955 [2023-11-23 21:32:24,487 INFO L226 Difference]: Without dead ends: 2037 [2023-11-23 21:32:24,488 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 [2023-11-23 21:32:24,490 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 4522 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4522 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:24,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4522 Valid, 911 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:32:24,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2023-11-23 21:32:24,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2023. [2023-11-23 21:32:24,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 2017 states have (on average 1.281110560237977) internal successors, (2584), 2022 states have internal predecessors, (2584), 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) [2023-11-23 21:32:24,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2584 transitions. [2023-11-23 21:32:24,550 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2584 transitions. Word has length 52 [2023-11-23 21:32:24,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:24,550 INFO L495 AbstractCegarLoop]: Abstraction has 2023 states and 2584 transitions. [2023-11-23 21:32:24,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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) [2023-11-23 21:32:24,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2584 transitions. [2023-11-23 21:32:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-23 21:32:24,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:24,555 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] [2023-11-23 21:32:24,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:32:24,556 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:24,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:24,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1808254749, now seen corresponding path program 1 times [2023-11-23 21:32:24,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:24,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787240324] [2023-11-23 21:32:24,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:24,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:24,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:24,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787240324] [2023-11-23 21:32:24,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787240324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:24,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:24,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:32:24,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738166369] [2023-11-23 21:32:24,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:24,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:32:24,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:24,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:32:24,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:24,727 INFO L87 Difference]: Start difference. First operand 2023 states and 2584 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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) [2023-11-23 21:32:25,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:25,731 INFO L93 Difference]: Finished difference Result 4066 states and 5224 transitions. [2023-11-23 21:32:25,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:32:25,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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 [2023-11-23 21:32:25,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:25,750 INFO L225 Difference]: With dead ends: 4066 [2023-11-23 21:32:25,757 INFO L226 Difference]: Without dead ends: 2767 [2023-11-23 21:32:25,764 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 [2023-11-23 21:32:25,767 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 4000 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4000 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:25,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4000 Valid, 814 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:32:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2023-11-23 21:32:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2757. [2023-11-23 21:32:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2751 states have (on average 1.2751726644856416) internal successors, (3508), 2756 states have internal predecessors, (3508), 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) [2023-11-23 21:32:25,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3508 transitions. [2023-11-23 21:32:25,894 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3508 transitions. Word has length 52 [2023-11-23 21:32:25,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:25,895 INFO L495 AbstractCegarLoop]: Abstraction has 2757 states and 3508 transitions. [2023-11-23 21:32:25,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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) [2023-11-23 21:32:25,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3508 transitions. [2023-11-23 21:32:25,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 21:32:25,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:25,899 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] [2023-11-23 21:32:25,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:32:25,902 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:25,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:25,903 INFO L85 PathProgramCache]: Analyzing trace with hash 77244356, now seen corresponding path program 1 times [2023-11-23 21:32:25,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:25,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522702782] [2023-11-23 21:32:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:25,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:26,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:26,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:26,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522702782] [2023-11-23 21:32:26,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522702782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:26,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:26,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:32:26,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335473381] [2023-11-23 21:32:26,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:26,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:32:26,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:26,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:32:26,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:32:26,519 INFO L87 Difference]: Start difference. First operand 2757 states and 3508 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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) [2023-11-23 21:32:28,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:28,109 INFO L93 Difference]: Finished difference Result 4380 states and 5696 transitions. [2023-11-23 21:32:28,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:32:28,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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 [2023-11-23 21:32:28,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:28,139 INFO L225 Difference]: With dead ends: 4380 [2023-11-23 21:32:28,139 INFO L226 Difference]: Without dead ends: 3852 [2023-11-23 21:32:28,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:32:28,152 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 3545 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3545 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:28,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3545 Valid, 1926 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 21:32:28,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2023-11-23 21:32:28,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 2757. [2023-11-23 21:32:28,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2751 states have (on average 1.2748091603053435) internal successors, (3507), 2756 states have internal predecessors, (3507), 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) [2023-11-23 21:32:28,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3507 transitions. [2023-11-23 21:32:28,269 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3507 transitions. Word has length 54 [2023-11-23 21:32:28,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:28,269 INFO L495 AbstractCegarLoop]: Abstraction has 2757 states and 3507 transitions. [2023-11-23 21:32:28,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 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) [2023-11-23 21:32:28,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3507 transitions. [2023-11-23 21:32:28,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 21:32:28,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:28,274 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] [2023-11-23 21:32:28,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:32:28,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:28,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:28,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1063699171, now seen corresponding path program 1 times [2023-11-23 21:32:28,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:28,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348224211] [2023-11-23 21:32:28,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:28,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:28,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:28,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348224211] [2023-11-23 21:32:28,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348224211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:28,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:28,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:32:28,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489432841] [2023-11-23 21:32:28,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:28,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:32:28,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:32:28,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:32:28,812 INFO L87 Difference]: Start difference. First operand 2757 states and 3507 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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) [2023-11-23 21:32:31,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:31,558 INFO L93 Difference]: Finished difference Result 5136 states and 6662 transitions. [2023-11-23 21:32:31,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 21:32:31,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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 [2023-11-23 21:32:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:31,584 INFO L225 Difference]: With dead ends: 5136 [2023-11-23 21:32:31,584 INFO L226 Difference]: Without dead ends: 4730 [2023-11-23 21:32:31,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-11-23 21:32:31,587 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 3713 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 3717 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3713 SdHoareTripleChecker+Valid, 3688 SdHoareTripleChecker+Invalid, 3772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:31,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3713 Valid, 3688 Invalid, 3772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3717 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-23 21:32:31,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2023-11-23 21:32:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 2757. [2023-11-23 21:32:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2751 states have (on average 1.2744456561250455) internal successors, (3506), 2756 states have internal predecessors, (3506), 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) [2023-11-23 21:32:31,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3506 transitions. [2023-11-23 21:32:31,700 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3506 transitions. Word has length 54 [2023-11-23 21:32:31,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:31,701 INFO L495 AbstractCegarLoop]: Abstraction has 2757 states and 3506 transitions. [2023-11-23 21:32:31,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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) [2023-11-23 21:32:31,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3506 transitions. [2023-11-23 21:32:31,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 21:32:31,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:31,704 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] [2023-11-23 21:32:31,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:32:31,705 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:31,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:31,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1340474756, now seen corresponding path program 1 times [2023-11-23 21:32:31,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:31,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049249947] [2023-11-23 21:32:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:31,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:32,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:32,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049249947] [2023-11-23 21:32:32,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049249947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:32,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:32,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:32:32,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426205342] [2023-11-23 21:32:32,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:32,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:32:32,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:32,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:32:32,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:32:32,095 INFO L87 Difference]: Start difference. First operand 2757 states and 3506 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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) [2023-11-23 21:32:33,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:33,824 INFO L93 Difference]: Finished difference Result 3968 states and 5094 transitions. [2023-11-23 21:32:33,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 21:32:33,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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 [2023-11-23 21:32:33,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:33,846 INFO L225 Difference]: With dead ends: 3968 [2023-11-23 21:32:33,846 INFO L226 Difference]: Without dead ends: 3962 [2023-11-23 21:32:33,848 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 [2023-11-23 21:32:33,849 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 3421 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3421 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:33,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3421 Valid, 2627 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 21:32:33,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2023-11-23 21:32:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 2757. [2023-11-23 21:32:33,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2751 states have (on average 1.2740821519447474) internal successors, (3505), 2756 states have internal predecessors, (3505), 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) [2023-11-23 21:32:33,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3505 transitions. [2023-11-23 21:32:33,943 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3505 transitions. Word has length 54 [2023-11-23 21:32:33,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:33,944 INFO L495 AbstractCegarLoop]: Abstraction has 2757 states and 3505 transitions. [2023-11-23 21:32:33,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 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) [2023-11-23 21:32:33,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3505 transitions. [2023-11-23 21:32:33,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 21:32:33,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:33,948 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] [2023-11-23 21:32:33,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:32:33,949 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:33,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:33,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1906140159, now seen corresponding path program 1 times [2023-11-23 21:32:33,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:33,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901325507] [2023-11-23 21:32:33,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:33,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:34,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:34,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901325507] [2023-11-23 21:32:34,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901325507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:34,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:34,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:34,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968501851] [2023-11-23 21:32:34,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:34,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:34,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:34,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:34,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:34,080 INFO L87 Difference]: Start difference. First operand 2757 states and 3505 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) [2023-11-23 21:32:34,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:34,169 INFO L93 Difference]: Finished difference Result 3421 states and 4438 transitions. [2023-11-23 21:32:34,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:34,170 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 [2023-11-23 21:32:34,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:34,183 INFO L225 Difference]: With dead ends: 3421 [2023-11-23 21:32:34,184 INFO L226 Difference]: Without dead ends: 2678 [2023-11-23 21:32:34,185 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 [2023-11-23 21:32:34,187 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 498 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:34,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1613 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:32:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2023-11-23 21:32:34,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2676. [2023-11-23 21:32:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2670 states have (on average 1.2775280898876404) internal successors, (3411), 2675 states have internal predecessors, (3411), 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) [2023-11-23 21:32:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 3411 transitions. [2023-11-23 21:32:34,250 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 3411 transitions. Word has length 55 [2023-11-23 21:32:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:34,251 INFO L495 AbstractCegarLoop]: Abstraction has 2676 states and 3411 transitions. [2023-11-23 21:32:34,251 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) [2023-11-23 21:32:34,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 3411 transitions. [2023-11-23 21:32:34,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 21:32:34,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:34,255 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] [2023-11-23 21:32:34,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:32:34,255 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:34,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:34,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1049277419, now seen corresponding path program 1 times [2023-11-23 21:32:34,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:34,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703329752] [2023-11-23 21:32:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:34,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:34,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:34,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703329752] [2023-11-23 21:32:34,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703329752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:34,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:34,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:34,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363317236] [2023-11-23 21:32:34,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:34,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:34,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:34,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:34,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:34,366 INFO L87 Difference]: Start difference. First operand 2676 states and 3411 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) [2023-11-23 21:32:34,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:34,463 INFO L93 Difference]: Finished difference Result 3806 states and 5002 transitions. [2023-11-23 21:32:34,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:34,464 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 [2023-11-23 21:32:34,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:34,477 INFO L225 Difference]: With dead ends: 3806 [2023-11-23 21:32:34,477 INFO L226 Difference]: Without dead ends: 2874 [2023-11-23 21:32:34,479 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 [2023-11-23 21:32:34,481 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 511 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:34,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1555 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:32:34,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2023-11-23 21:32:34,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 2872. [2023-11-23 21:32:34,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2872 states, 2866 states have (on average 1.2951849267271458) internal successors, (3712), 2871 states have internal predecessors, (3712), 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) [2023-11-23 21:32:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 3712 transitions. [2023-11-23 21:32:34,537 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 3712 transitions. Word has length 55 [2023-11-23 21:32:34,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:34,537 INFO L495 AbstractCegarLoop]: Abstraction has 2872 states and 3712 transitions. [2023-11-23 21:32:34,538 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) [2023-11-23 21:32:34,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 3712 transitions. [2023-11-23 21:32:34,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 21:32:34,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:34,541 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] [2023-11-23 21:32:34,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:32:34,542 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:34,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:34,542 INFO L85 PathProgramCache]: Analyzing trace with hash 772696843, now seen corresponding path program 1 times [2023-11-23 21:32:34,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:34,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696021557] [2023-11-23 21:32:34,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:34,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:34,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:34,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696021557] [2023-11-23 21:32:34,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696021557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:34,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:34,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:34,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283416400] [2023-11-23 21:32:34,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:34,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:34,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:34,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:34,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:34,633 INFO L87 Difference]: Start difference. First operand 2872 states and 3712 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) [2023-11-23 21:32:34,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:34,782 INFO L93 Difference]: Finished difference Result 5772 states and 7594 transitions. [2023-11-23 21:32:34,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:34,783 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 [2023-11-23 21:32:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:34,812 INFO L225 Difference]: With dead ends: 5772 [2023-11-23 21:32:34,819 INFO L226 Difference]: Without dead ends: 3961 [2023-11-23 21:32:34,823 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 [2023-11-23 21:32:34,824 INFO L413 NwaCegarLoop]: 1076 mSDtfsCounter, 577 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:34,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1771 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:32:34,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3961 states. [2023-11-23 21:32:34,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3961 to 3955. [2023-11-23 21:32:34,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3955 states, 3949 states have (on average 1.2864016206634592) internal successors, (5080), 3954 states have internal predecessors, (5080), 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) [2023-11-23 21:32:34,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3955 states to 3955 states and 5080 transitions. [2023-11-23 21:32:34,922 INFO L78 Accepts]: Start accepts. Automaton has 3955 states and 5080 transitions. Word has length 55 [2023-11-23 21:32:34,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:34,922 INFO L495 AbstractCegarLoop]: Abstraction has 3955 states and 5080 transitions. [2023-11-23 21:32:34,923 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) [2023-11-23 21:32:34,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3955 states and 5080 transitions. [2023-11-23 21:32:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 21:32:34,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:34,927 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] [2023-11-23 21:32:34,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:32:34,928 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:34,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:34,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2137132613, now seen corresponding path program 1 times [2023-11-23 21:32:34,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:34,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191035019] [2023-11-23 21:32:34,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:34,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:35,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:35,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:35,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191035019] [2023-11-23 21:32:35,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191035019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:35,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:35,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:32:35,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397218543] [2023-11-23 21:32:35,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:35,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:32:35,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:35,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:32:35,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:32:35,835 INFO L87 Difference]: Start difference. First operand 3955 states and 5080 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 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) [2023-11-23 21:32:37,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:37,561 INFO L93 Difference]: Finished difference Result 8162 states and 10648 transitions. [2023-11-23 21:32:37,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:32:37,561 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 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 [2023-11-23 21:32:37,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:37,575 INFO L225 Difference]: With dead ends: 8162 [2023-11-23 21:32:37,575 INFO L226 Difference]: Without dead ends: 7915 [2023-11-23 21:32:37,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-11-23 21:32:37,579 INFO L413 NwaCegarLoop]: 1146 mSDtfsCounter, 3449 mSDsluCounter, 4600 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3449 SdHoareTripleChecker+Valid, 5746 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:37,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3449 Valid, 5746 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:32:37,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7915 states. [2023-11-23 21:32:37,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7915 to 3942. [2023-11-23 21:32:37,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3937 states have (on average 1.286512573025146) internal successors, (5065), 3941 states have internal predecessors, (5065), 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) [2023-11-23 21:32:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5065 transitions. [2023-11-23 21:32:37,683 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5065 transitions. Word has length 56 [2023-11-23 21:32:37,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:37,684 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 5065 transitions. [2023-11-23 21:32:37,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 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) [2023-11-23 21:32:37,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5065 transitions. [2023-11-23 21:32:37,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 21:32:37,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:37,688 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] [2023-11-23 21:32:37,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:32:37,689 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:37,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:37,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1716509337, now seen corresponding path program 1 times [2023-11-23 21:32:37,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:37,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922306626] [2023-11-23 21:32:37,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:37,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:37,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:37,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922306626] [2023-11-23 21:32:37,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922306626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:37,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:37,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:37,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473304437] [2023-11-23 21:32:37,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:37,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:37,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:37,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:37,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:37,770 INFO L87 Difference]: Start difference. First operand 3942 states and 5065 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2023-11-23 21:32:37,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:37,896 INFO L93 Difference]: Finished difference Result 7053 states and 9163 transitions. [2023-11-23 21:32:37,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:37,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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 [2023-11-23 21:32:37,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:37,905 INFO L225 Difference]: With dead ends: 7053 [2023-11-23 21:32:37,905 INFO L226 Difference]: Without dead ends: 4058 [2023-11-23 21:32:37,910 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 [2023-11-23 21:32:37,911 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 744 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:37,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1100 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:32:37,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2023-11-23 21:32:37,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 3260. [2023-11-23 21:32:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 3256 states have (on average 1.2939189189189189) internal successors, (4213), 3259 states have internal predecessors, (4213), 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) [2023-11-23 21:32:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 4213 transitions. [2023-11-23 21:32:37,972 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 4213 transitions. Word has length 56 [2023-11-23 21:32:37,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:37,973 INFO L495 AbstractCegarLoop]: Abstraction has 3260 states and 4213 transitions. [2023-11-23 21:32:37,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2023-11-23 21:32:37,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 4213 transitions. [2023-11-23 21:32:37,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 21:32:37,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:37,983 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] [2023-11-23 21:32:37,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:32:37,984 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:37,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:37,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1650159387, now seen corresponding path program 1 times [2023-11-23 21:32:37,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:37,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557256211] [2023-11-23 21:32:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:37,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:38,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:38,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557256211] [2023-11-23 21:32:38,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557256211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:38,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:38,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:38,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15634813] [2023-11-23 21:32:38,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:38,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:38,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:38,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:38,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:38,061 INFO L87 Difference]: Start difference. First operand 3260 states and 4213 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2023-11-23 21:32:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:38,162 INFO L93 Difference]: Finished difference Result 5975 states and 7833 transitions. [2023-11-23 21:32:38,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:38,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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 [2023-11-23 21:32:38,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:38,169 INFO L225 Difference]: With dead ends: 5975 [2023-11-23 21:32:38,169 INFO L226 Difference]: Without dead ends: 3415 [2023-11-23 21:32:38,173 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 [2023-11-23 21:32:38,174 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 571 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:38,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 882 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:32:38,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3415 states. [2023-11-23 21:32:38,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3415 to 2759. [2023-11-23 21:32:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2756 states have (on average 1.2982583454281567) internal successors, (3578), 2758 states have internal predecessors, (3578), 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) [2023-11-23 21:32:38,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 3578 transitions. [2023-11-23 21:32:38,239 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 3578 transitions. Word has length 56 [2023-11-23 21:32:38,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:38,240 INFO L495 AbstractCegarLoop]: Abstraction has 2759 states and 3578 transitions. [2023-11-23 21:32:38,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2023-11-23 21:32:38,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 3578 transitions. [2023-11-23 21:32:38,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 21:32:38,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:38,243 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] [2023-11-23 21:32:38,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:32:38,243 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:38,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:38,244 INFO L85 PathProgramCache]: Analyzing trace with hash 235795551, now seen corresponding path program 1 times [2023-11-23 21:32:38,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:38,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952287578] [2023-11-23 21:32:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:38,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:38,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:38,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:38,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952287578] [2023-11-23 21:32:38,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952287578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:38,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:38,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:38,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917962164] [2023-11-23 21:32:38,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:38,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:38,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:38,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:38,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:38,328 INFO L87 Difference]: Start difference. First operand 2759 states and 3578 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2023-11-23 21:32:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:38,446 INFO L93 Difference]: Finished difference Result 5083 states and 6666 transitions. [2023-11-23 21:32:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:38,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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 [2023-11-23 21:32:38,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:38,452 INFO L225 Difference]: With dead ends: 5083 [2023-11-23 21:32:38,452 INFO L226 Difference]: Without dead ends: 2657 [2023-11-23 21:32:38,456 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 [2023-11-23 21:32:38,457 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 484 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:38,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 775 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:32:38,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2023-11-23 21:32:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2326. [2023-11-23 21:32:38,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2326 states, 2323 states have (on average 1.303486870426173) internal successors, (3028), 2325 states have internal predecessors, (3028), 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) [2023-11-23 21:32:38,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2326 states to 2326 states and 3028 transitions. [2023-11-23 21:32:38,535 INFO L78 Accepts]: Start accepts. Automaton has 2326 states and 3028 transitions. Word has length 56 [2023-11-23 21:32:38,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:38,536 INFO L495 AbstractCegarLoop]: Abstraction has 2326 states and 3028 transitions. [2023-11-23 21:32:38,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2023-11-23 21:32:38,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2326 states and 3028 transitions. [2023-11-23 21:32:38,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 21:32:38,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:38,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:38,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:32:38,539 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:38,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:38,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1739046160, now seen corresponding path program 1 times [2023-11-23 21:32:38,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:38,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869708161] [2023-11-23 21:32:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:38,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:39,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:39,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869708161] [2023-11-23 21:32:39,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869708161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:39,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:39,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 21:32:39,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36691538] [2023-11-23 21:32:39,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:39,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:32:39,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:39,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:32:39,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:32:39,223 INFO L87 Difference]: Start difference. First operand 2326 states and 3028 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 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) [2023-11-23 21:32:40,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:40,976 INFO L93 Difference]: Finished difference Result 5856 states and 7602 transitions. [2023-11-23 21:32:40,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-23 21:32:40,977 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 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 [2023-11-23 21:32:40,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:40,987 INFO L225 Difference]: With dead ends: 5856 [2023-11-23 21:32:40,987 INFO L226 Difference]: Without dead ends: 5597 [2023-11-23 21:32:40,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2023-11-23 21:32:40,991 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 3257 mSDsluCounter, 3337 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3257 SdHoareTripleChecker+Valid, 4205 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:40,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3257 Valid, 4205 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:32:40,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2023-11-23 21:32:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 2301. [2023-11-23 21:32:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2299 states have (on average 1.3040452370595912) internal successors, (2998), 2300 states have internal predecessors, (2998), 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) [2023-11-23 21:32:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 2998 transitions. [2023-11-23 21:32:41,051 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 2998 transitions. Word has length 57 [2023-11-23 21:32:41,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:41,052 INFO L495 AbstractCegarLoop]: Abstraction has 2301 states and 2998 transitions. [2023-11-23 21:32:41,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 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) [2023-11-23 21:32:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 2998 transitions. [2023-11-23 21:32:41,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 21:32:41,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:41,055 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] [2023-11-23 21:32:41,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 21:32:41,055 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:41,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:41,056 INFO L85 PathProgramCache]: Analyzing trace with hash 503772602, now seen corresponding path program 1 times [2023-11-23 21:32:41,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:41,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537105105] [2023-11-23 21:32:41,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:41,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:42,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:42,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537105105] [2023-11-23 21:32:42,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537105105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:42,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:42,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-23 21:32:42,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704108399] [2023-11-23 21:32:42,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:42,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 21:32:42,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:42,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 21:32:42,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:32:42,240 INFO L87 Difference]: Start difference. First operand 2301 states and 2998 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 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) [2023-11-23 21:32:44,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:44,892 INFO L93 Difference]: Finished difference Result 4514 states and 5843 transitions. [2023-11-23 21:32:44,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-23 21:32:44,893 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 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 [2023-11-23 21:32:44,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:44,901 INFO L225 Difference]: With dead ends: 4514 [2023-11-23 21:32:44,901 INFO L226 Difference]: Without dead ends: 4510 [2023-11-23 21:32:44,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2023-11-23 21:32:44,903 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 3280 mSDsluCounter, 6207 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3280 SdHoareTripleChecker+Valid, 6854 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:44,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3280 Valid, 6854 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 21:32:44,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2023-11-23 21:32:44,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 2309. [2023-11-23 21:32:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2307 states have (on average 1.3038578240138707) internal successors, (3008), 2308 states have internal predecessors, (3008), 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) [2023-11-23 21:32:44,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3008 transitions. [2023-11-23 21:32:44,951 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3008 transitions. Word has length 57 [2023-11-23 21:32:44,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:44,952 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 3008 transitions. [2023-11-23 21:32:44,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 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) [2023-11-23 21:32:44,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3008 transitions. [2023-11-23 21:32:44,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-23 21:32:44,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:44,955 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] [2023-11-23 21:32:44,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 21:32:44,955 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:44,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:44,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2083415141, now seen corresponding path program 1 times [2023-11-23 21:32:44,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:44,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419631503] [2023-11-23 21:32:44,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:44,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:46,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:46,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419631503] [2023-11-23 21:32:46,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419631503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:46,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:46,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-23 21:32:46,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877219079] [2023-11-23 21:32:46,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:46,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 21:32:46,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:46,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 21:32:46,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-11-23 21:32:46,116 INFO L87 Difference]: Start difference. First operand 2309 states and 3008 transitions. Second operand has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 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) [2023-11-23 21:32:49,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:49,256 INFO L93 Difference]: Finished difference Result 4437 states and 5693 transitions. [2023-11-23 21:32:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-23 21:32:49,260 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 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 58 [2023-11-23 21:32:49,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:49,268 INFO L225 Difference]: With dead ends: 4437 [2023-11-23 21:32:49,268 INFO L226 Difference]: Without dead ends: 4433 [2023-11-23 21:32:49,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 21:32:49,271 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 3520 mSDsluCounter, 6246 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 6956 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:49,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3520 Valid, 6956 Invalid, 2536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 21:32:49,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2023-11-23 21:32:49,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 2297. [2023-11-23 21:32:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2297 states, 2296 states have (on average 1.3040069686411149) internal successors, (2994), 2296 states have internal predecessors, (2994), 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) [2023-11-23 21:32:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 2994 transitions. [2023-11-23 21:32:49,313 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 2994 transitions. Word has length 58 [2023-11-23 21:32:49,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:49,313 INFO L495 AbstractCegarLoop]: Abstraction has 2297 states and 2994 transitions. [2023-11-23 21:32:49,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 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) [2023-11-23 21:32:49,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 2994 transitions. [2023-11-23 21:32:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 21:32:49,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:49,316 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] [2023-11-23 21:32:49,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 21:32:49,316 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:49,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:49,317 INFO L85 PathProgramCache]: Analyzing trace with hash -623939390, now seen corresponding path program 1 times [2023-11-23 21:32:49,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:49,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866591234] [2023-11-23 21:32:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:49,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:49,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:49,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866591234] [2023-11-23 21:32:49,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866591234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:49,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:49,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:32:49,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451306486] [2023-11-23 21:32:49,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:49,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:32:49,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:49,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:32:49,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:49,493 INFO L87 Difference]: Start difference. First operand 2297 states and 2994 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2023-11-23 21:32:49,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:49,585 INFO L93 Difference]: Finished difference Result 3855 states and 5097 transitions. [2023-11-23 21:32:49,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:32:49,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 [2023-11-23 21:32:49,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:49,589 INFO L225 Difference]: With dead ends: 3855 [2023-11-23 21:32:49,589 INFO L226 Difference]: Without dead ends: 2067 [2023-11-23 21:32:49,592 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 [2023-11-23 21:32:49,592 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 1238 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:49,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 685 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:32:49,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2023-11-23 21:32:49,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 2063. [2023-11-23 21:32:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2063 states, 2062 states have (on average 1.2934044616876819) internal successors, (2667), 2062 states have internal predecessors, (2667), 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) [2023-11-23 21:32:49,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 2667 transitions. [2023-11-23 21:32:49,621 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 2667 transitions. Word has length 61 [2023-11-23 21:32:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:49,622 INFO L495 AbstractCegarLoop]: Abstraction has 2063 states and 2667 transitions. [2023-11-23 21:32:49,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2023-11-23 21:32:49,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 2667 transitions. [2023-11-23 21:32:49,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 21:32:49,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:49,624 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] [2023-11-23 21:32:49,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 21:32:49,624 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:49,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash 397628825, now seen corresponding path program 1 times [2023-11-23 21:32:49,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:49,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465415233] [2023-11-23 21:32:49,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:49,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:49,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:49,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:49,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465415233] [2023-11-23 21:32:49,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465415233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:49,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:49,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:49,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514803855] [2023-11-23 21:32:49,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:49,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:49,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:49,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:49,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:49,766 INFO L87 Difference]: Start difference. First operand 2063 states and 2667 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-11-23 21:32:49,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:49,845 INFO L93 Difference]: Finished difference Result 4383 states and 5811 transitions. [2023-11-23 21:32:49,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:49,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2023-11-23 21:32:49,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:49,851 INFO L225 Difference]: With dead ends: 4383 [2023-11-23 21:32:49,852 INFO L226 Difference]: Without dead ends: 2935 [2023-11-23 21:32:49,854 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 [2023-11-23 21:32:49,855 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 284 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:49,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 713 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:32:49,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2023-11-23 21:32:49,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2699. [2023-11-23 21:32:49,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2698 states have (on average 1.2946627131208301) internal successors, (3493), 2698 states have internal predecessors, (3493), 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) [2023-11-23 21:32:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3493 transitions. [2023-11-23 21:32:49,899 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3493 transitions. Word has length 62 [2023-11-23 21:32:49,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:49,899 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3493 transitions. [2023-11-23 21:32:49,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-11-23 21:32:49,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3493 transitions. [2023-11-23 21:32:49,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-23 21:32:49,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:49,902 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] [2023-11-23 21:32:49,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 21:32:49,902 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:49,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:49,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1236897276, now seen corresponding path program 1 times [2023-11-23 21:32:49,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:49,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330214353] [2023-11-23 21:32:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:49,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:50,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:50,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330214353] [2023-11-23 21:32:50,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330214353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:50,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:50,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:50,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062003133] [2023-11-23 21:32:50,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:50,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:50,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:50,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:50,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:50,045 INFO L87 Difference]: Start difference. First operand 2699 states and 3493 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2023-11-23 21:32:50,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:50,132 INFO L93 Difference]: Finished difference Result 6034 states and 7970 transitions. [2023-11-23 21:32:50,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:50,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2023-11-23 21:32:50,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:50,141 INFO L225 Difference]: With dead ends: 6034 [2023-11-23 21:32:50,142 INFO L226 Difference]: Without dead ends: 4012 [2023-11-23 21:32:50,145 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 [2023-11-23 21:32:50,145 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 227 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:50,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 744 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:32:50,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4012 states. [2023-11-23 21:32:50,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4012 to 3658. [2023-11-23 21:32:50,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 1.2904019688269073) internal successors, (4719), 3657 states have internal predecessors, (4719), 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) [2023-11-23 21:32:50,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 4719 transitions. [2023-11-23 21:32:50,207 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 4719 transitions. Word has length 63 [2023-11-23 21:32:50,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:50,207 INFO L495 AbstractCegarLoop]: Abstraction has 3658 states and 4719 transitions. [2023-11-23 21:32:50,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2023-11-23 21:32:50,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 4719 transitions. [2023-11-23 21:32:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 21:32:50,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:50,210 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] [2023-11-23 21:32:50,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 21:32:50,211 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:50,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:50,211 INFO L85 PathProgramCache]: Analyzing trace with hash -660543680, now seen corresponding path program 1 times [2023-11-23 21:32:50,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:50,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440150147] [2023-11-23 21:32:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:50,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:50,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:50,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440150147] [2023-11-23 21:32:50,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440150147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:50,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:50,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:32:50,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119766510] [2023-11-23 21:32:50,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:50,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:32:50,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:50,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:32:50,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:32:50,678 INFO L87 Difference]: Start difference. First operand 3658 states and 4719 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2023-11-23 21:32:51,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:51,124 INFO L93 Difference]: Finished difference Result 8263 states and 10665 transitions. [2023-11-23 21:32:51,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 21:32:51,125 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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 [2023-11-23 21:32:51,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:51,142 INFO L225 Difference]: With dead ends: 8263 [2023-11-23 21:32:51,142 INFO L226 Difference]: Without dead ends: 8261 [2023-11-23 21:32:51,145 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 [2023-11-23 21:32:51,146 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 1844 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1844 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:51,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1844 Valid, 2571 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:32:51,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8261 states. [2023-11-23 21:32:51,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8261 to 4246. [2023-11-23 21:32:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4246 states, 4245 states have (on average 1.2852767962308598) internal successors, (5456), 4245 states have internal predecessors, (5456), 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) [2023-11-23 21:32:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4246 states to 4246 states and 5456 transitions. [2023-11-23 21:32:51,234 INFO L78 Accepts]: Start accepts. Automaton has 4246 states and 5456 transitions. Word has length 68 [2023-11-23 21:32:51,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:51,235 INFO L495 AbstractCegarLoop]: Abstraction has 4246 states and 5456 transitions. [2023-11-23 21:32:51,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2023-11-23 21:32:51,235 INFO L276 IsEmpty]: Start isEmpty. Operand 4246 states and 5456 transitions. [2023-11-23 21:32:51,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 21:32:51,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:51,238 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, 1, 1] [2023-11-23 21:32:51,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 21:32:51,239 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:51,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:51,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2095616936, now seen corresponding path program 1 times [2023-11-23 21:32:51,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:51,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520081145] [2023-11-23 21:32:51,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:51,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:51,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:51,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520081145] [2023-11-23 21:32:51,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520081145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:51,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:51,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:32:51,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122899627] [2023-11-23 21:32:51,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:51,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:32:51,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:51,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:32:51,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:32:51,710 INFO L87 Difference]: Start difference. First operand 4246 states and 5456 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 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) [2023-11-23 21:32:52,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:52,118 INFO L93 Difference]: Finished difference Result 8138 states and 10503 transitions. [2023-11-23 21:32:52,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 21:32:52,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 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 74 [2023-11-23 21:32:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:52,161 INFO L225 Difference]: With dead ends: 8138 [2023-11-23 21:32:52,161 INFO L226 Difference]: Without dead ends: 8136 [2023-11-23 21:32:52,162 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 [2023-11-23 21:32:52,163 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 1431 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:52,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 2598 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:32:52,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8136 states. [2023-11-23 21:32:52,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8136 to 4575. [2023-11-23 21:32:52,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4575 states, 4574 states have (on average 1.2824661128115435) internal successors, (5866), 4574 states have internal predecessors, (5866), 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) [2023-11-23 21:32:52,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 5866 transitions. [2023-11-23 21:32:52,260 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 5866 transitions. Word has length 74 [2023-11-23 21:32:52,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:52,261 INFO L495 AbstractCegarLoop]: Abstraction has 4575 states and 5866 transitions. [2023-11-23 21:32:52,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 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) [2023-11-23 21:32:52,261 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 5866 transitions. [2023-11-23 21:32:52,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 21:32:52,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:52,265 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, 1, 1, 1] [2023-11-23 21:32:52,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 21:32:52,265 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:52,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:52,266 INFO L85 PathProgramCache]: Analyzing trace with hash 229070017, now seen corresponding path program 1 times [2023-11-23 21:32:52,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:52,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754901804] [2023-11-23 21:32:52,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:52,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:52,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:52,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754901804] [2023-11-23 21:32:52,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754901804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:52,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:52,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:32:52,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548057173] [2023-11-23 21:32:52,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:52,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:32:52,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:52,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:32:52,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:32:52,714 INFO L87 Difference]: Start difference. First operand 4575 states and 5866 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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) [2023-11-23 21:32:53,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:53,116 INFO L93 Difference]: Finished difference Result 8201 states and 10576 transitions. [2023-11-23 21:32:53,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 21:32:53,117 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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 75 [2023-11-23 21:32:53,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:53,133 INFO L225 Difference]: With dead ends: 8201 [2023-11-23 21:32:53,134 INFO L226 Difference]: Without dead ends: 8199 [2023-11-23 21:32:53,136 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 [2023-11-23 21:32:53,138 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 1408 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:53,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 2735 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:32:53,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8199 states. [2023-11-23 21:32:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8199 to 4902. [2023-11-23 21:32:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4901 states have (on average 1.2801469087941237) internal successors, (6274), 4901 states have internal predecessors, (6274), 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) [2023-11-23 21:32:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 6274 transitions. [2023-11-23 21:32:53,242 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 6274 transitions. Word has length 75 [2023-11-23 21:32:53,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:53,242 INFO L495 AbstractCegarLoop]: Abstraction has 4902 states and 6274 transitions. [2023-11-23 21:32:53,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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) [2023-11-23 21:32:53,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 6274 transitions. [2023-11-23 21:32:53,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 21:32:53,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:53,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:53,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 21:32:53,246 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:53,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:53,247 INFO L85 PathProgramCache]: Analyzing trace with hash -495396898, now seen corresponding path program 1 times [2023-11-23 21:32:53,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:53,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637231662] [2023-11-23 21:32:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:53,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:53,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:53,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:53,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637231662] [2023-11-23 21:32:53,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637231662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:53,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:53,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:32:53,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016822955] [2023-11-23 21:32:53,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:53,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:32:53,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:53,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:32:53,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:32:53,772 INFO L87 Difference]: Start difference. First operand 4902 states and 6274 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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) [2023-11-23 21:32:54,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:54,229 INFO L93 Difference]: Finished difference Result 7675 states and 9895 transitions. [2023-11-23 21:32:54,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 21:32:54,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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 75 [2023-11-23 21:32:54,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:54,245 INFO L225 Difference]: With dead ends: 7675 [2023-11-23 21:32:54,245 INFO L226 Difference]: Without dead ends: 7673 [2023-11-23 21:32:54,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2023-11-23 21:32:54,249 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1583 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:54,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 2686 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:32:54,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7673 states. [2023-11-23 21:32:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7673 to 4863. [2023-11-23 21:32:54,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 4862 states have (on average 1.2807486631016043) internal successors, (6227), 4862 states have internal predecessors, (6227), 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) [2023-11-23 21:32:54,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 6227 transitions. [2023-11-23 21:32:54,345 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 6227 transitions. Word has length 75 [2023-11-23 21:32:54,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:54,345 INFO L495 AbstractCegarLoop]: Abstraction has 4863 states and 6227 transitions. [2023-11-23 21:32:54,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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) [2023-11-23 21:32:54,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 6227 transitions. [2023-11-23 21:32:54,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-23 21:32:54,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:54,349 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, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:54,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 21:32:54,350 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:54,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1871640008, now seen corresponding path program 1 times [2023-11-23 21:32:54,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:54,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445830863] [2023-11-23 21:32:54,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:54,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:54,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:54,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:54,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445830863] [2023-11-23 21:32:54,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445830863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:54,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:54,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:54,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900682750] [2023-11-23 21:32:54,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:54,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:54,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:54,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:54,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:54,494 INFO L87 Difference]: Start difference. First operand 4863 states and 6227 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-23 21:32:54,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:54,593 INFO L93 Difference]: Finished difference Result 9271 states and 12103 transitions. [2023-11-23 21:32:54,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:54,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-11-23 21:32:54,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:54,606 INFO L225 Difference]: With dead ends: 9271 [2023-11-23 21:32:54,606 INFO L226 Difference]: Without dead ends: 6445 [2023-11-23 21:32:54,610 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 [2023-11-23 21:32:54,611 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 294 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:54,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 702 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:32:54,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6445 states. [2023-11-23 21:32:54,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6445 to 6011. [2023-11-23 21:32:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 6010 states have (on average 1.2780366056572379) internal successors, (7681), 6010 states have internal predecessors, (7681), 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) [2023-11-23 21:32:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 7681 transitions. [2023-11-23 21:32:54,703 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 7681 transitions. Word has length 78 [2023-11-23 21:32:54,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:54,704 INFO L495 AbstractCegarLoop]: Abstraction has 6011 states and 7681 transitions. [2023-11-23 21:32:54,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-23 21:32:54,704 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 7681 transitions. [2023-11-23 21:32:54,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 21:32:54,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:54,708 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:54,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-23 21:32:54,708 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-23 21:32:54,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:54,709 INFO L85 PathProgramCache]: Analyzing trace with hash 767008424, now seen corresponding path program 1 times [2023-11-23 21:32:54,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:54,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949346079] [2023-11-23 21:32:54,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:54,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat