./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+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c39b660f273ecbdfa60a013e46dad0637949d26902d1f41ae3834ad8e3310564 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:16:28,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:16:28,463 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:16:28,468 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:16:28,468 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:16:28,509 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:16:28,509 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:16:28,510 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:16:28,510 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:16:28,511 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:16:28,511 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:16:28,512 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:16:28,512 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:16:28,512 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:16:28,513 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:16:28,513 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:16:28,514 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:16:28,514 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:16:28,514 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:16:28,515 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:16:28,515 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:16:28,516 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:16:28,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:16:28,517 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:16:28,517 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:16:28,517 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:16:28,518 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:16:28,518 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:16:28,518 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:16:28,519 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:16:28,519 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:16:28,519 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:16:28,520 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:16:28,520 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:16:28,520 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:16:28,521 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:16:28,521 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:16:28,521 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:16:28,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:16:28,522 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:16:28,522 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:16:28,523 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:16:28,523 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:16:28,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:16:28,523 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:16:28,524 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:16:28,524 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:16:28,524 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_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c39b660f273ecbdfa60a013e46dad0637949d26902d1f41ae3834ad8e3310564 [2024-11-09 05:16:28,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:16:28,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:16:28,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:16:28,823 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:16:28,825 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:16:28,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c Unable to find full path for "g++" [2024-11-09 05:16:30,850 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:16:31,178 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:16:31,179 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-11-09 05:16:31,192 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/data/f31604453/c4cb910a6abb428b99503d4b2363f331/FLAG5eb14bcfa [2024-11-09 05:16:31,209 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/data/f31604453/c4cb910a6abb428b99503d4b2363f331 [2024-11-09 05:16:31,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:16:31,214 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:16:31,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:16:31,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:16:31,223 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:16:31,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:16:31" (1/1) ... [2024-11-09 05:16:31,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b59b1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:16:31, skipping insertion in model container [2024-11-09 05:16:31,225 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:16:31" (1/1) ... [2024-11-09 05:16:31,297 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:16:31,635 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7469,7482] [2024-11-09 05:16:31,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:16:31,725 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:16:31,811 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7469,7482] [2024-11-09 05:16:31,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:16:31,881 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:16:31,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:16:31 WrapperNode [2024-11-09 05:16:31,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:16:31,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:16:31,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:16:31,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:16:31,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:16:31" (1/1) ... [2024-11-09 05:16:31,909 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:16:31" (1/1) ... [2024-11-09 05:16:31,953 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 665 [2024-11-09 05:16:31,953 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:16:31,954 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:16:31,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:16:31,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:16:31,964 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:16:31" (1/1) ... [2024-11-09 05:16:31,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:16:31" (1/1) ... [2024-11-09 05:16:31,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:16:31" (1/1) ... [2024-11-09 05:16:31,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:16:31" (1/1) ... [2024-11-09 05:16:31,995 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:16:31" (1/1) ... [2024-11-09 05:16:32,004 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:16:31" (1/1) ... [2024-11-09 05:16:32,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:16:31" (1/1) ... [2024-11-09 05:16:32,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:16:31" (1/1) ... [2024-11-09 05:16:32,021 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:16:32,026 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:16:32,026 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:16:32,026 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:16:32,031 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:16:31" (1/1) ... [2024-11-09 05:16:32,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:16:32,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:16:32,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:16:32,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:16:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:16:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:16:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:16:32,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:16:32,226 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:16:32,227 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:16:33,092 INFO L? ?]: Removed 89 outVars from TransFormulas that were not future-live. [2024-11-09 05:16:33,093 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:16:33,306 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:16:33,307 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:16:33,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:16:33 BoogieIcfgContainer [2024-11-09 05:16:33,308 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:16:33,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:16:33,312 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:16:33,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:16:33,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:16:31" (1/3) ... [2024-11-09 05:16:33,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5847062a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:16:33, skipping insertion in model container [2024-11-09 05:16:33,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:16:31" (2/3) ... [2024-11-09 05:16:33,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5847062a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:16:33, skipping insertion in model container [2024-11-09 05:16:33,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:16:33" (3/3) ... [2024-11-09 05:16:33,322 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-11-09 05:16:33,341 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:16:33,341 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:16:33,423 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:16:33,430 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ea44c2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:16:33,430 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:16:33,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 119 states have (on average 1.6890756302521008) internal successors, (201), 120 states have internal predecessors, (201), 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) [2024-11-09 05:16:33,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 05:16:33,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:33,443 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:33,444 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:33,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:33,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1018428456, now seen corresponding path program 1 times [2024-11-09 05:16:33,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:33,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655522020] [2024-11-09 05:16:33,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:33,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:34,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:34,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655522020] [2024-11-09 05:16:34,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655522020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:34,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:34,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:16:34,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884870289] [2024-11-09 05:16:34,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:34,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:16:34,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:34,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:16:34,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:16:34,271 INFO L87 Difference]: Start difference. First operand has 121 states, 119 states have (on average 1.6890756302521008) internal successors, (201), 120 states have internal predecessors, (201), 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 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-09 05:16:34,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:34,514 INFO L93 Difference]: Finished difference Result 328 states and 524 transitions. [2024-11-09 05:16:34,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:16:34,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 43 [2024-11-09 05:16:34,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:34,527 INFO L225 Difference]: With dead ends: 328 [2024-11-09 05:16:34,527 INFO L226 Difference]: Without dead ends: 244 [2024-11-09 05:16:34,530 INFO L431 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 [2024-11-09 05:16:34,534 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 395 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:34,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 690 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:16:34,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-09 05:16:34,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2024-11-09 05:16:34,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.3723849372384938) internal successors, (328), 239 states have internal predecessors, (328), 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) [2024-11-09 05:16:34,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 328 transitions. [2024-11-09 05:16:34,581 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 328 transitions. Word has length 43 [2024-11-09 05:16:34,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:34,582 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 328 transitions. [2024-11-09 05:16:34,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-11-09 05:16:34,582 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 328 transitions. [2024-11-09 05:16:34,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 05:16:34,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:34,584 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:34,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:16:34,584 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:34,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:34,585 INFO L85 PathProgramCache]: Analyzing trace with hash 834890152, now seen corresponding path program 1 times [2024-11-09 05:16:34,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:34,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727839427] [2024-11-09 05:16:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:34,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:34,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:34,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727839427] [2024-11-09 05:16:34,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727839427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:34,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:34,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:16:34,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240875901] [2024-11-09 05:16:34,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:34,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:16:34,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:34,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:16:34,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:16:34,773 INFO L87 Difference]: Start difference. First operand 240 states and 328 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-11-09 05:16:35,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:35,045 INFO L93 Difference]: Finished difference Result 531 states and 737 transitions. [2024-11-09 05:16:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:16:35,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2024-11-09 05:16:35,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:35,053 INFO L225 Difference]: With dead ends: 531 [2024-11-09 05:16:35,053 INFO L226 Difference]: Without dead ends: 318 [2024-11-09 05:16:35,054 INFO L431 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 [2024-11-09 05:16:35,055 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 418 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:35,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 167 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:16:35,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-09 05:16:35,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 316. [2024-11-09 05:16:35,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.3746031746031746) internal successors, (433), 315 states have internal predecessors, (433), 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) [2024-11-09 05:16:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 433 transitions. [2024-11-09 05:16:35,089 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 433 transitions. Word has length 44 [2024-11-09 05:16:35,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:35,089 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 433 transitions. [2024-11-09 05:16:35,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-11-09 05:16:35,090 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 433 transitions. [2024-11-09 05:16:35,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 05:16:35,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:35,091 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:35,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:16:35,092 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:35,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:35,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1779741559, now seen corresponding path program 1 times [2024-11-09 05:16:35,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:35,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448355809] [2024-11-09 05:16:35,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:35,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:35,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:35,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448355809] [2024-11-09 05:16:35,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448355809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:35,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:35,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:16:35,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751716753] [2024-11-09 05:16:35,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:35,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:16:35,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:35,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:16:35,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:16:35,231 INFO L87 Difference]: Start difference. First operand 316 states and 433 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-11-09 05:16:35,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:35,460 INFO L93 Difference]: Finished difference Result 765 states and 1070 transitions. [2024-11-09 05:16:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:16:35,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2024-11-09 05:16:35,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:35,463 INFO L225 Difference]: With dead ends: 765 [2024-11-09 05:16:35,463 INFO L226 Difference]: Without dead ends: 492 [2024-11-09 05:16:35,465 INFO L431 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 [2024-11-09 05:16:35,469 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 397 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:35,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 178 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:16:35,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-09 05:16:35,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 490. [2024-11-09 05:16:35,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.3865030674846626) internal successors, (678), 489 states have internal predecessors, (678), 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) [2024-11-09 05:16:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 678 transitions. [2024-11-09 05:16:35,503 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 678 transitions. Word has length 44 [2024-11-09 05:16:35,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:35,504 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 678 transitions. [2024-11-09 05:16:35,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-11-09 05:16:35,508 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 678 transitions. [2024-11-09 05:16:35,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 05:16:35,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:35,509 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:35,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:16:35,510 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:35,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:35,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1473536122, now seen corresponding path program 1 times [2024-11-09 05:16:35,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:35,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419198609] [2024-11-09 05:16:35,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:35,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:35,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:35,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419198609] [2024-11-09 05:16:35,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419198609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:35,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:35,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:16:35,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913385671] [2024-11-09 05:16:35,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:35,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:16:35,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:35,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:16:35,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:16:35,683 INFO L87 Difference]: Start difference. First operand 490 states and 678 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-11-09 05:16:35,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:35,904 INFO L93 Difference]: Finished difference Result 1267 states and 1784 transitions. [2024-11-09 05:16:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:16:35,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2024-11-09 05:16:35,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:35,908 INFO L225 Difference]: With dead ends: 1267 [2024-11-09 05:16:35,910 INFO L226 Difference]: Without dead ends: 840 [2024-11-09 05:16:35,912 INFO L431 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 [2024-11-09 05:16:35,913 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 380 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:35,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 186 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:16:35,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2024-11-09 05:16:35,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 838. [2024-11-09 05:16:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.3954599761051374) internal successors, (1168), 837 states have internal predecessors, (1168), 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) [2024-11-09 05:16:35,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1168 transitions. [2024-11-09 05:16:35,943 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1168 transitions. Word has length 44 [2024-11-09 05:16:35,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:35,944 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1168 transitions. [2024-11-09 05:16:35,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-11-09 05:16:35,946 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1168 transitions. [2024-11-09 05:16:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 05:16:35,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:35,948 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:35,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:16:35,948 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:35,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:35,951 INFO L85 PathProgramCache]: Analyzing trace with hash -200138580, now seen corresponding path program 1 times [2024-11-09 05:16:35,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:35,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896544450] [2024-11-09 05:16:35,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:35,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:36,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:36,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896544450] [2024-11-09 05:16:36,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896544450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:36,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:36,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 05:16:36,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976916394] [2024-11-09 05:16:36,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:36,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:16:36,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:36,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:16:36,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:16:36,622 INFO L87 Difference]: Start difference. First operand 838 states and 1168 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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) [2024-11-09 05:16:37,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:37,512 INFO L93 Difference]: Finished difference Result 4663 states and 6639 transitions. [2024-11-09 05:16:37,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 05:16:37,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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 45 [2024-11-09 05:16:37,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:37,527 INFO L225 Difference]: With dead ends: 4663 [2024-11-09 05:16:37,527 INFO L226 Difference]: Without dead ends: 3965 [2024-11-09 05:16:37,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2024-11-09 05:16:37,530 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1035 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:37,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 949 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:16:37,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3965 states. [2024-11-09 05:16:37,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3965 to 2483. [2024-11-09 05:16:37,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2482 states have (on average 1.3924254633360194) internal successors, (3456), 2482 states have internal predecessors, (3456), 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) [2024-11-09 05:16:37,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3456 transitions. [2024-11-09 05:16:37,625 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3456 transitions. Word has length 45 [2024-11-09 05:16:37,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:37,625 INFO L471 AbstractCegarLoop]: Abstraction has 2483 states and 3456 transitions. [2024-11-09 05:16:37,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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) [2024-11-09 05:16:37,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3456 transitions. [2024-11-09 05:16:37,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 05:16:37,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:37,627 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:37,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:16:37,628 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:37,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:37,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1369054068, now seen corresponding path program 1 times [2024-11-09 05:16:37,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:37,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762647223] [2024-11-09 05:16:37,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:37,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:38,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:38,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762647223] [2024-11-09 05:16:38,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762647223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:38,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:38,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 05:16:38,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653771370] [2024-11-09 05:16:38,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:38,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:16:38,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:38,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:16:38,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:16:38,122 INFO L87 Difference]: Start difference. First operand 2483 states and 3456 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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) [2024-11-09 05:16:38,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:38,798 INFO L93 Difference]: Finished difference Result 4263 states and 5980 transitions. [2024-11-09 05:16:38,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 05:16:38,799 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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 45 [2024-11-09 05:16:38,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:38,810 INFO L225 Difference]: With dead ends: 4263 [2024-11-09 05:16:38,810 INFO L226 Difference]: Without dead ends: 3787 [2024-11-09 05:16:38,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:16:38,813 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 946 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:38,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 998 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:16:38,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2024-11-09 05:16:38,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3067. [2024-11-09 05:16:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 3066 states have (on average 1.3842139595564253) internal successors, (4244), 3066 states have internal predecessors, (4244), 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) [2024-11-09 05:16:38,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4244 transitions. [2024-11-09 05:16:38,910 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4244 transitions. Word has length 45 [2024-11-09 05:16:38,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:38,911 INFO L471 AbstractCegarLoop]: Abstraction has 3067 states and 4244 transitions. [2024-11-09 05:16:38,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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) [2024-11-09 05:16:38,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4244 transitions. [2024-11-09 05:16:38,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 05:16:38,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:38,913 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:38,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:16:38,913 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:38,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:38,914 INFO L85 PathProgramCache]: Analyzing trace with hash 541257836, now seen corresponding path program 1 times [2024-11-09 05:16:38,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:38,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854813725] [2024-11-09 05:16:38,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:38,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:39,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:39,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854813725] [2024-11-09 05:16:39,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854813725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:39,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:39,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 05:16:39,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177050705] [2024-11-09 05:16:39,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:39,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:16:39,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:39,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:16:39,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:16:39,413 INFO L87 Difference]: Start difference. First operand 3067 states and 4244 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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) [2024-11-09 05:16:39,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:39,977 INFO L93 Difference]: Finished difference Result 4801 states and 6657 transitions. [2024-11-09 05:16:39,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:16:39,978 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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 45 [2024-11-09 05:16:39,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:39,991 INFO L225 Difference]: With dead ends: 4801 [2024-11-09 05:16:39,991 INFO L226 Difference]: Without dead ends: 4639 [2024-11-09 05:16:39,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:16:39,995 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 1225 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:39,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 858 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:16:40,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4639 states. [2024-11-09 05:16:40,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4639 to 3520. [2024-11-09 05:16:40,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3520 states, 3519 states have (on average 1.3813583404376244) internal successors, (4861), 3519 states have internal predecessors, (4861), 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) [2024-11-09 05:16:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 4861 transitions. [2024-11-09 05:16:40,118 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 4861 transitions. Word has length 45 [2024-11-09 05:16:40,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:40,119 INFO L471 AbstractCegarLoop]: Abstraction has 3520 states and 4861 transitions. [2024-11-09 05:16:40,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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) [2024-11-09 05:16:40,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 4861 transitions. [2024-11-09 05:16:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 05:16:40,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:40,120 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:40,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:16:40,120 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:40,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:40,121 INFO L85 PathProgramCache]: Analyzing trace with hash -971498400, now seen corresponding path program 1 times [2024-11-09 05:16:40,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:40,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944567793] [2024-11-09 05:16:40,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:40,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:40,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:40,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944567793] [2024-11-09 05:16:40,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944567793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:40,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:40,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 05:16:40,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78332373] [2024-11-09 05:16:40,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:40,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:16:40,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:40,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:16:40,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:16:40,697 INFO L87 Difference]: Start difference. First operand 3520 states and 4861 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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) [2024-11-09 05:16:41,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:41,328 INFO L93 Difference]: Finished difference Result 8197 states and 11371 transitions. [2024-11-09 05:16:41,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 05:16:41,329 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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 47 [2024-11-09 05:16:41,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:41,350 INFO L225 Difference]: With dead ends: 8197 [2024-11-09 05:16:41,350 INFO L226 Difference]: Without dead ends: 7271 [2024-11-09 05:16:41,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2024-11-09 05:16:41,354 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 454 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:41,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 1515 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:16:41,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7271 states. [2024-11-09 05:16:41,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7271 to 4856. [2024-11-09 05:16:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4856 states, 4855 states have (on average 1.3857878475798147) internal successors, (6728), 4855 states have internal predecessors, (6728), 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) [2024-11-09 05:16:41,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 6728 transitions. [2024-11-09 05:16:41,485 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 6728 transitions. Word has length 47 [2024-11-09 05:16:41,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:41,486 INFO L471 AbstractCegarLoop]: Abstraction has 4856 states and 6728 transitions. [2024-11-09 05:16:41,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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) [2024-11-09 05:16:41,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 6728 transitions. [2024-11-09 05:16:41,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 05:16:41,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:41,488 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:41,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 05:16:41,488 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:41,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:41,488 INFO L85 PathProgramCache]: Analyzing trace with hash 938813504, now seen corresponding path program 1 times [2024-11-09 05:16:41,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:41,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019376304] [2024-11-09 05:16:41,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:41,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:42,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:42,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019376304] [2024-11-09 05:16:42,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019376304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:42,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:42,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 05:16:42,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118888377] [2024-11-09 05:16:42,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:42,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:16:42,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:42,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:16:42,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:16:42,086 INFO L87 Difference]: Start difference. First operand 4856 states and 6728 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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) [2024-11-09 05:16:42,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:42,845 INFO L93 Difference]: Finished difference Result 7344 states and 10176 transitions. [2024-11-09 05:16:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 05:16:42,845 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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 47 [2024-11-09 05:16:42,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:42,873 INFO L225 Difference]: With dead ends: 7344 [2024-11-09 05:16:42,873 INFO L226 Difference]: Without dead ends: 6646 [2024-11-09 05:16:42,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2024-11-09 05:16:42,876 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 399 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:42,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 1090 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:16:42,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6646 states. [2024-11-09 05:16:42,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6646 to 4883. [2024-11-09 05:16:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4883 states, 4882 states have (on average 1.383654240065547) internal successors, (6755), 4882 states have internal predecessors, (6755), 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) [2024-11-09 05:16:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4883 states to 4883 states and 6755 transitions. [2024-11-09 05:16:43,011 INFO L78 Accepts]: Start accepts. Automaton has 4883 states and 6755 transitions. Word has length 47 [2024-11-09 05:16:43,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:43,011 INFO L471 AbstractCegarLoop]: Abstraction has 4883 states and 6755 transitions. [2024-11-09 05:16:43,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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) [2024-11-09 05:16:43,012 INFO L276 IsEmpty]: Start isEmpty. Operand 4883 states and 6755 transitions. [2024-11-09 05:16:43,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 05:16:43,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:43,013 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:43,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 05:16:43,014 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:43,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:43,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1402506208, now seen corresponding path program 1 times [2024-11-09 05:16:43,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:43,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113062553] [2024-11-09 05:16:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:43,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:43,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:43,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113062553] [2024-11-09 05:16:43,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113062553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:43,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:43,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 05:16:43,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949927209] [2024-11-09 05:16:43,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:43,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:16:43,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:43,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:16:43,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:16:43,564 INFO L87 Difference]: Start difference. First operand 4883 states and 6755 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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) [2024-11-09 05:16:44,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:44,023 INFO L93 Difference]: Finished difference Result 8742 states and 12104 transitions. [2024-11-09 05:16:44,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 05:16:44,027 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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 47 [2024-11-09 05:16:44,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:44,057 INFO L225 Difference]: With dead ends: 8742 [2024-11-09 05:16:44,058 INFO L226 Difference]: Without dead ends: 8588 [2024-11-09 05:16:44,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=302, Unknown=0, NotChecked=0, Total=462 [2024-11-09 05:16:44,061 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 477 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:44,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1325 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:16:44,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8588 states. [2024-11-09 05:16:44,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8588 to 4886. [2024-11-09 05:16:44,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4886 states, 4885 states have (on average 1.3834186284544525) internal successors, (6758), 4885 states have internal predecessors, (6758), 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) [2024-11-09 05:16:44,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4886 states to 4886 states and 6758 transitions. [2024-11-09 05:16:44,180 INFO L78 Accepts]: Start accepts. Automaton has 4886 states and 6758 transitions. Word has length 47 [2024-11-09 05:16:44,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:44,180 INFO L471 AbstractCegarLoop]: Abstraction has 4886 states and 6758 transitions. [2024-11-09 05:16:44,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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) [2024-11-09 05:16:44,181 INFO L276 IsEmpty]: Start isEmpty. Operand 4886 states and 6758 transitions. [2024-11-09 05:16:44,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 05:16:44,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:44,181 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:44,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 05:16:44,182 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:44,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:44,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1930219348, now seen corresponding path program 1 times [2024-11-09 05:16:44,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:44,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701409980] [2024-11-09 05:16:44,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:44,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:44,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:44,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701409980] [2024-11-09 05:16:44,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701409980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:44,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:44,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:16:44,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603552104] [2024-11-09 05:16:44,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:44,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:16:44,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:44,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:16:44,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:44,238 INFO L87 Difference]: Start difference. First operand 4886 states and 6758 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:44,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:44,313 INFO L93 Difference]: Finished difference Result 8711 states and 12117 transitions. [2024-11-09 05:16:44,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:16:44,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-09 05:16:44,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:44,323 INFO L225 Difference]: With dead ends: 8711 [2024-11-09 05:16:44,323 INFO L226 Difference]: Without dead ends: 4592 [2024-11-09 05:16:44,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:44,328 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 85 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:44,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 271 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:16:44,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4592 states. [2024-11-09 05:16:44,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4592 to 4588. [2024-11-09 05:16:44,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4588 states, 4587 states have (on average 1.381294964028777) internal successors, (6336), 4587 states have internal predecessors, (6336), 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) [2024-11-09 05:16:44,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 6336 transitions. [2024-11-09 05:16:44,410 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 6336 transitions. Word has length 48 [2024-11-09 05:16:44,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:44,410 INFO L471 AbstractCegarLoop]: Abstraction has 4588 states and 6336 transitions. [2024-11-09 05:16:44,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:44,411 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 6336 transitions. [2024-11-09 05:16:44,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 05:16:44,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:44,411 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:44,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 05:16:44,412 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:44,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:44,412 INFO L85 PathProgramCache]: Analyzing trace with hash -123916631, now seen corresponding path program 1 times [2024-11-09 05:16:44,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:44,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658405301] [2024-11-09 05:16:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:44,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:44,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:44,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:44,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658405301] [2024-11-09 05:16:44,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658405301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:44,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:44,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:16:44,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618309527] [2024-11-09 05:16:44,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:44,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:16:44,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:16:44,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:44,505 INFO L87 Difference]: Start difference. First operand 4588 states and 6336 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:44,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:44,593 INFO L93 Difference]: Finished difference Result 8127 states and 11277 transitions. [2024-11-09 05:16:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:16:44,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-09 05:16:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:44,603 INFO L225 Difference]: With dead ends: 8127 [2024-11-09 05:16:44,603 INFO L226 Difference]: Without dead ends: 4335 [2024-11-09 05:16:44,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:44,608 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 78 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:44,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 271 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:16:44,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4335 states. [2024-11-09 05:16:44,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4335 to 4241. [2024-11-09 05:16:44,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4241 states, 4240 states have (on average 1.3783018867924528) internal successors, (5844), 4240 states have internal predecessors, (5844), 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) [2024-11-09 05:16:44,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 5844 transitions. [2024-11-09 05:16:44,708 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 5844 transitions. Word has length 48 [2024-11-09 05:16:44,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:44,709 INFO L471 AbstractCegarLoop]: Abstraction has 4241 states and 5844 transitions. [2024-11-09 05:16:44,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:44,709 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 5844 transitions. [2024-11-09 05:16:44,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 05:16:44,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:44,710 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:44,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 05:16:44,711 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:44,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:44,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1603598604, now seen corresponding path program 1 times [2024-11-09 05:16:44,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:44,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581170494] [2024-11-09 05:16:44,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:44,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:48,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:48,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581170494] [2024-11-09 05:16:48,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581170494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:48,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:48,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2024-11-09 05:16:48,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774775688] [2024-11-09 05:16:48,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:48,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 05:16:48,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:48,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 05:16:48,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2024-11-09 05:16:48,658 INFO L87 Difference]: Start difference. First operand 4241 states and 5844 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:53,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:53,464 INFO L93 Difference]: Finished difference Result 5732 states and 7880 transitions. [2024-11-09 05:16:53,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 05:16:53,465 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-09 05:16:53,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:53,479 INFO L225 Difference]: With dead ends: 5732 [2024-11-09 05:16:53,479 INFO L226 Difference]: Without dead ends: 5586 [2024-11-09 05:16:53,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=598, Invalid=1658, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 05:16:53,482 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 585 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:53,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 1226 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 05:16:53,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2024-11-09 05:16:53,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 4247. [2024-11-09 05:16:53,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4247 states, 4246 states have (on average 1.3780028261893547) internal successors, (5851), 4246 states have internal predecessors, (5851), 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) [2024-11-09 05:16:53,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 5851 transitions. [2024-11-09 05:16:53,578 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 5851 transitions. Word has length 49 [2024-11-09 05:16:53,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:53,578 INFO L471 AbstractCegarLoop]: Abstraction has 4247 states and 5851 transitions. [2024-11-09 05:16:53,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:53,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 5851 transitions. [2024-11-09 05:16:53,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 05:16:53,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:53,580 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:53,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 05:16:53,580 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:53,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:53,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1506313429, now seen corresponding path program 1 times [2024-11-09 05:16:53,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:53,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035517483] [2024-11-09 05:16:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:53,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:53,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:53,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035517483] [2024-11-09 05:16:53,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035517483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:53,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:53,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:16:53,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589451959] [2024-11-09 05:16:53,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:53,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:16:53,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:53,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:16:53,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:53,631 INFO L87 Difference]: Start difference. First operand 4247 states and 5851 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:53,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:53,707 INFO L93 Difference]: Finished difference Result 7056 states and 9747 transitions. [2024-11-09 05:16:53,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:16:53,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-09 05:16:53,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:53,715 INFO L225 Difference]: With dead ends: 7056 [2024-11-09 05:16:53,715 INFO L226 Difference]: Without dead ends: 4022 [2024-11-09 05:16:53,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:53,719 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 84 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:53,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 250 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:16:53,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4022 states. [2024-11-09 05:16:53,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4022 to 4020. [2024-11-09 05:16:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4020 states, 4019 states have (on average 1.3749688977357553) internal successors, (5526), 4019 states have internal predecessors, (5526), 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) [2024-11-09 05:16:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4020 states to 4020 states and 5526 transitions. [2024-11-09 05:16:53,786 INFO L78 Accepts]: Start accepts. Automaton has 4020 states and 5526 transitions. Word has length 50 [2024-11-09 05:16:53,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:53,787 INFO L471 AbstractCegarLoop]: Abstraction has 4020 states and 5526 transitions. [2024-11-09 05:16:53,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:53,787 INFO L276 IsEmpty]: Start isEmpty. Operand 4020 states and 5526 transitions. [2024-11-09 05:16:53,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 05:16:53,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:53,788 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:53,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 05:16:53,788 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:53,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:53,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1218080428, now seen corresponding path program 1 times [2024-11-09 05:16:53,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:53,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370450353] [2024-11-09 05:16:53,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:53,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:53,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:53,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370450353] [2024-11-09 05:16:53,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370450353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:53,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:53,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:16:53,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905983849] [2024-11-09 05:16:53,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:53,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:16:53,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:53,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:16:53,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:53,949 INFO L87 Difference]: Start difference. First operand 4020 states and 5526 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) [2024-11-09 05:16:54,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:54,007 INFO L93 Difference]: Finished difference Result 7746 states and 10703 transitions. [2024-11-09 05:16:54,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:16:54,008 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 [2024-11-09 05:16:54,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:54,016 INFO L225 Difference]: With dead ends: 7746 [2024-11-09 05:16:54,017 INFO L226 Difference]: Without dead ends: 4931 [2024-11-09 05:16:54,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:54,022 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 81 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:54,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 296 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:16:54,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2024-11-09 05:16:54,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 4587. [2024-11-09 05:16:54,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4587 states, 4586 states have (on average 1.3658962058438726) internal successors, (6264), 4586 states have internal predecessors, (6264), 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) [2024-11-09 05:16:54,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 6264 transitions. [2024-11-09 05:16:54,119 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 6264 transitions. Word has length 55 [2024-11-09 05:16:54,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:54,119 INFO L471 AbstractCegarLoop]: Abstraction has 4587 states and 6264 transitions. [2024-11-09 05:16:54,120 INFO L472 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) [2024-11-09 05:16:54,120 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 6264 transitions. [2024-11-09 05:16:54,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-09 05:16:54,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:54,123 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:54,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 05:16:54,124 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:54,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1267139503, now seen corresponding path program 1 times [2024-11-09 05:16:54,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:54,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969682624] [2024-11-09 05:16:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:54,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:54,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:54,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969682624] [2024-11-09 05:16:54,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969682624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:54,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:54,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:16:54,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44567057] [2024-11-09 05:16:54,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:54,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:16:54,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:54,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:16:54,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:54,198 INFO L87 Difference]: Start difference. First operand 4587 states and 6264 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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) [2024-11-09 05:16:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:54,255 INFO L93 Difference]: Finished difference Result 7480 states and 10220 transitions. [2024-11-09 05:16:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:16:54,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 [2024-11-09 05:16:54,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:54,263 INFO L225 Difference]: With dead ends: 7480 [2024-11-09 05:16:54,264 INFO L226 Difference]: Without dead ends: 3910 [2024-11-09 05:16:54,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:54,268 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 73 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:54,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 302 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:16:54,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2024-11-09 05:16:54,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 3908. [2024-11-09 05:16:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3908 states, 3907 states have (on average 1.3465574609674942) internal successors, (5261), 3907 states have internal predecessors, (5261), 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) [2024-11-09 05:16:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3908 states to 3908 states and 5261 transitions. [2024-11-09 05:16:54,328 INFO L78 Accepts]: Start accepts. Automaton has 3908 states and 5261 transitions. Word has length 58 [2024-11-09 05:16:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:54,328 INFO L471 AbstractCegarLoop]: Abstraction has 3908 states and 5261 transitions. [2024-11-09 05:16:54,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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) [2024-11-09 05:16:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3908 states and 5261 transitions. [2024-11-09 05:16:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-09 05:16:54,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:54,332 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:54,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 05:16:54,332 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:54,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:54,333 INFO L85 PathProgramCache]: Analyzing trace with hash 732595313, now seen corresponding path program 1 times [2024-11-09 05:16:54,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:54,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256720055] [2024-11-09 05:16:54,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:54,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:54,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:54,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256720055] [2024-11-09 05:16:54,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256720055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:54,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:54,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:16:54,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521312662] [2024-11-09 05:16:54,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:54,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:16:54,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:54,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:16:54,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:54,467 INFO L87 Difference]: Start difference. First operand 3908 states and 5261 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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) [2024-11-09 05:16:54,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:54,525 INFO L93 Difference]: Finished difference Result 8560 states and 11601 transitions. [2024-11-09 05:16:54,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:16:54,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 [2024-11-09 05:16:54,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:54,536 INFO L225 Difference]: With dead ends: 8560 [2024-11-09 05:16:54,536 INFO L226 Difference]: Without dead ends: 5423 [2024-11-09 05:16:54,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:54,541 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 77 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:54,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 278 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:16:54,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2024-11-09 05:16:54,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 4863. [2024-11-09 05:16:54,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 4862 states have (on average 1.332167832167832) internal successors, (6477), 4862 states have internal predecessors, (6477), 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) [2024-11-09 05:16:54,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 6477 transitions. [2024-11-09 05:16:54,618 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 6477 transitions. Word has length 58 [2024-11-09 05:16:54,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:54,619 INFO L471 AbstractCegarLoop]: Abstraction has 4863 states and 6477 transitions. [2024-11-09 05:16:54,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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) [2024-11-09 05:16:54,619 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 6477 transitions. [2024-11-09 05:16:54,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 05:16:54,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:54,621 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:54,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 05:16:54,621 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:54,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:54,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1707017512, now seen corresponding path program 1 times [2024-11-09 05:16:54,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:54,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27807023] [2024-11-09 05:16:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:54,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:54,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:54,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27807023] [2024-11-09 05:16:54,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27807023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:54,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:54,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:16:54,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042983634] [2024-11-09 05:16:54,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:54,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:16:54,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:54,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:16:54,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:54,702 INFO L87 Difference]: Start difference. First operand 4863 states and 6477 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:54,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:54,760 INFO L93 Difference]: Finished difference Result 7206 states and 9601 transitions. [2024-11-09 05:16:54,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:16:54,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-09 05:16:54,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:54,770 INFO L225 Difference]: With dead ends: 7206 [2024-11-09 05:16:54,771 INFO L226 Difference]: Without dead ends: 5180 [2024-11-09 05:16:54,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:54,774 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 73 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:54,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 315 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:16:54,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5180 states. [2024-11-09 05:16:54,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5180 to 5178. [2024-11-09 05:16:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5178 states, 5177 states have (on average 1.3196832142167279) internal successors, (6832), 5177 states have internal predecessors, (6832), 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) [2024-11-09 05:16:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5178 states to 5178 states and 6832 transitions. [2024-11-09 05:16:54,879 INFO L78 Accepts]: Start accepts. Automaton has 5178 states and 6832 transitions. Word has length 61 [2024-11-09 05:16:54,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:54,880 INFO L471 AbstractCegarLoop]: Abstraction has 5178 states and 6832 transitions. [2024-11-09 05:16:54,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5178 states and 6832 transitions. [2024-11-09 05:16:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 05:16:54,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:54,881 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:54,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 05:16:54,882 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:54,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:54,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1823848776, now seen corresponding path program 1 times [2024-11-09 05:16:54,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:54,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072720087] [2024-11-09 05:16:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:54,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:55,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:55,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:55,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072720087] [2024-11-09 05:16:55,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072720087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:55,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:55,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:16:55,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467554689] [2024-11-09 05:16:55,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:55,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:16:55,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:55,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:16:55,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:55,009 INFO L87 Difference]: Start difference. First operand 5178 states and 6832 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:55,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:55,070 INFO L93 Difference]: Finished difference Result 12198 states and 16188 transitions. [2024-11-09 05:16:55,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:16:55,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-09 05:16:55,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:55,083 INFO L225 Difference]: With dead ends: 12198 [2024-11-09 05:16:55,083 INFO L226 Difference]: Without dead ends: 7410 [2024-11-09 05:16:55,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:16:55,088 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 72 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:55,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 259 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:16:55,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7410 states. [2024-11-09 05:16:55,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7410 to 6760. [2024-11-09 05:16:55,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6760 states, 6759 states have (on average 1.3065542239976329) internal successors, (8831), 6759 states have internal predecessors, (8831), 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) [2024-11-09 05:16:55,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6760 states to 6760 states and 8831 transitions. [2024-11-09 05:16:55,188 INFO L78 Accepts]: Start accepts. Automaton has 6760 states and 8831 transitions. Word has length 61 [2024-11-09 05:16:55,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:55,188 INFO L471 AbstractCegarLoop]: Abstraction has 6760 states and 8831 transitions. [2024-11-09 05:16:55,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:55,188 INFO L276 IsEmpty]: Start isEmpty. Operand 6760 states and 8831 transitions. [2024-11-09 05:16:55,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 05:16:55,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:55,190 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:55,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 05:16:55,190 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:55,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:55,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1721870330, now seen corresponding path program 1 times [2024-11-09 05:16:55,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:55,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808000659] [2024-11-09 05:16:55,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:55,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:55,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:55,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808000659] [2024-11-09 05:16:55,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808000659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:55,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:55,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:16:55,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727897714] [2024-11-09 05:16:55,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:55,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:16:55,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:55,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:16:55,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:16:55,470 INFO L87 Difference]: Start difference. First operand 6760 states and 8831 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 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) [2024-11-09 05:16:55,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:55,871 INFO L93 Difference]: Finished difference Result 17323 states and 22694 transitions. [2024-11-09 05:16:55,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:16:55,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 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 66 [2024-11-09 05:16:55,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:55,893 INFO L225 Difference]: With dead ends: 17323 [2024-11-09 05:16:55,893 INFO L226 Difference]: Without dead ends: 10769 [2024-11-09 05:16:55,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:16:55,901 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 914 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:55,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 227 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:16:55,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10769 states. [2024-11-09 05:16:56,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10769 to 9075. [2024-11-09 05:16:56,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9075 states, 9074 states have (on average 1.287745206083315) internal successors, (11685), 9074 states have internal predecessors, (11685), 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) [2024-11-09 05:16:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9075 states to 9075 states and 11685 transitions. [2024-11-09 05:16:56,093 INFO L78 Accepts]: Start accepts. Automaton has 9075 states and 11685 transitions. Word has length 66 [2024-11-09 05:16:56,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:56,094 INFO L471 AbstractCegarLoop]: Abstraction has 9075 states and 11685 transitions. [2024-11-09 05:16:56,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 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) [2024-11-09 05:16:56,094 INFO L276 IsEmpty]: Start isEmpty. Operand 9075 states and 11685 transitions. [2024-11-09 05:16:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 05:16:56,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:56,095 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:56,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 05:16:56,096 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:56,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:56,097 INFO L85 PathProgramCache]: Analyzing trace with hash -798253003, now seen corresponding path program 1 times [2024-11-09 05:16:56,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:56,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727795174] [2024-11-09 05:16:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:56,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:56,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:56,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727795174] [2024-11-09 05:16:56,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727795174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:56,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:16:56,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 05:16:56,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297711509] [2024-11-09 05:16:56,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:56,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:16:56,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:56,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:16:56,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:16:56,438 INFO L87 Difference]: Start difference. First operand 9075 states and 11685 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2024-11-09 05:16:56,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:56,570 INFO L93 Difference]: Finished difference Result 10462 states and 13491 transitions. [2024-11-09 05:16:56,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:16:56,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 66 [2024-11-09 05:16:56,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:56,589 INFO L225 Difference]: With dead ends: 10462 [2024-11-09 05:16:56,589 INFO L226 Difference]: Without dead ends: 10460 [2024-11-09 05:16:56,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:16:56,593 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 64 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:56,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 713 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:16:56,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10460 states. [2024-11-09 05:16:56,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10460 to 10460. [2024-11-09 05:16:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10460 states, 10459 states have (on average 1.284635242374988) internal successors, (13436), 10459 states have internal predecessors, (13436), 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) [2024-11-09 05:16:56,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10460 states to 10460 states and 13436 transitions. [2024-11-09 05:16:56,781 INFO L78 Accepts]: Start accepts. Automaton has 10460 states and 13436 transitions. Word has length 66 [2024-11-09 05:16:56,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:56,781 INFO L471 AbstractCegarLoop]: Abstraction has 10460 states and 13436 transitions. [2024-11-09 05:16:56,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2024-11-09 05:16:56,781 INFO L276 IsEmpty]: Start isEmpty. Operand 10460 states and 13436 transitions. [2024-11-09 05:16:56,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 05:16:56,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:56,783 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:56,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 05:16:56,784 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:16:56,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:56,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1606998927, now seen corresponding path program 1 times [2024-11-09 05:16:56,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:56,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883078090] [2024-11-09 05:16:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:56,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:58,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:58,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883078090] [2024-11-09 05:16:58,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883078090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:16:58,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277960676] [2024-11-09 05:16:58,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:58,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:58,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:16:58,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:16:58,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:16:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:58,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 05:16:58,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:17:00,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 05:17:00,164 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:17:00,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277960676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:17:00,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:17:00,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [18] total 32 [2024-11-09 05:17:00,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37065004] [2024-11-09 05:17:00,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:17:00,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 05:17:00,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:17:00,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 05:17:00,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=864, Unknown=0, NotChecked=0, Total=992 [2024-11-09 05:17:00,167 INFO L87 Difference]: Start difference. First operand 10460 states and 13436 transitions. Second operand has 16 states, 16 states have (on average 4.5625) internal successors, (73), 15 states have internal predecessors, (73), 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) [2024-11-09 05:17:01,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:17:01,405 INFO L93 Difference]: Finished difference Result 17019 states and 21846 transitions. [2024-11-09 05:17:01,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 05:17:01,405 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 15 states have internal predecessors, (73), 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 76 [2024-11-09 05:17:01,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:17:01,428 INFO L225 Difference]: With dead ends: 17019 [2024-11-09 05:17:01,428 INFO L226 Difference]: Without dead ends: 12453 [2024-11-09 05:17:01,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=234, Invalid=1406, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 05:17:01,435 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 788 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:17:01,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 932 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:17:01,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12453 states. [2024-11-09 05:17:01,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12453 to 10795. [2024-11-09 05:17:01,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10795 states, 10794 states have (on average 1.2821011673151752) internal successors, (13839), 10794 states have internal predecessors, (13839), 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) [2024-11-09 05:17:01,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10795 states to 10795 states and 13839 transitions. [2024-11-09 05:17:01,664 INFO L78 Accepts]: Start accepts. Automaton has 10795 states and 13839 transitions. Word has length 76 [2024-11-09 05:17:01,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:17:01,664 INFO L471 AbstractCegarLoop]: Abstraction has 10795 states and 13839 transitions. [2024-11-09 05:17:01,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 15 states have internal predecessors, (73), 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) [2024-11-09 05:17:01,665 INFO L276 IsEmpty]: Start isEmpty. Operand 10795 states and 13839 transitions. [2024-11-09 05:17:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 05:17:01,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:17:01,667 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:17:01,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 05:17:01,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:17:01,869 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:17:01,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:17:01,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1803231252, now seen corresponding path program 1 times [2024-11-09 05:17:01,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:17:01,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658516730] [2024-11-09 05:17:01,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:17:01,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:17:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:17:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 05:17:02,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:17:02,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658516730] [2024-11-09 05:17:02,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658516730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:17:02,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:17:02,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:17:02,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187816332] [2024-11-09 05:17:02,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:17:02,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:17:02,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:17:02,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:17:02,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:17:02,139 INFO L87 Difference]: Start difference. First operand 10795 states and 13839 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-09 05:17:02,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:17:02,535 INFO L93 Difference]: Finished difference Result 27824 states and 35900 transitions. [2024-11-09 05:17:02,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:17:02,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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 76 [2024-11-09 05:17:02,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:17:02,567 INFO L225 Difference]: With dead ends: 27824 [2024-11-09 05:17:02,568 INFO L226 Difference]: Without dead ends: 18612 [2024-11-09 05:17:02,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:17:02,578 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 1018 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:17:02,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 236 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:17:02,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18612 states. [2024-11-09 05:17:02,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18612 to 13984. [2024-11-09 05:17:02,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13984 states, 13983 states have (on average 1.2701137095043982) internal successors, (17760), 13983 states have internal predecessors, (17760), 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) [2024-11-09 05:17:02,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13984 states to 13984 states and 17760 transitions. [2024-11-09 05:17:02,883 INFO L78 Accepts]: Start accepts. Automaton has 13984 states and 17760 transitions. Word has length 76 [2024-11-09 05:17:02,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:17:02,883 INFO L471 AbstractCegarLoop]: Abstraction has 13984 states and 17760 transitions. [2024-11-09 05:17:02,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-09 05:17:02,884 INFO L276 IsEmpty]: Start isEmpty. Operand 13984 states and 17760 transitions. [2024-11-09 05:17:02,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 05:17:02,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:17:02,886 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:17:02,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 05:17:02,886 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:17:02,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:17:02,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1925743311, now seen corresponding path program 1 times [2024-11-09 05:17:02,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:17:02,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294833213] [2024-11-09 05:17:02,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:17:02,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:17:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:17:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:17:03,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:17:03,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294833213] [2024-11-09 05:17:03,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294833213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:17:03,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287982064] [2024-11-09 05:17:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:17:03,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:17:03,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:17:03,968 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:17:03,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:17:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:17:04,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-09 05:17:04,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:17:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:17:05,956 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:17:05,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287982064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:17:05,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:17:05,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [14] total 32 [2024-11-09 05:17:05,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486212134] [2024-11-09 05:17:05,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:17:05,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 05:17:05,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:17:05,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 05:17:05,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2024-11-09 05:17:05,959 INFO L87 Difference]: Start difference. First operand 13984 states and 17760 transitions. Second operand has 20 states, 20 states have (on average 3.7) internal successors, (74), 19 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) [2024-11-09 05:17:10,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:17:10,972 INFO L93 Difference]: Finished difference Result 30916 states and 39423 transitions. [2024-11-09 05:17:10,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-09 05:17:10,973 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 19 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 76 [2024-11-09 05:17:10,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:17:11,022 INFO L225 Difference]: With dead ends: 30916 [2024-11-09 05:17:11,022 INFO L226 Difference]: Without dead ends: 25716 [2024-11-09 05:17:11,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1850 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1298, Invalid=5842, Unknown=0, NotChecked=0, Total=7140 [2024-11-09 05:17:11,033 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 2082 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:17:11,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2082 Valid, 1347 Invalid, 1919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 05:17:11,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25716 states. [2024-11-09 05:17:11,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25716 to 15903. [2024-11-09 05:17:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15903 states, 15902 states have (on average 1.2639290655263489) internal successors, (20099), 15902 states have internal predecessors, (20099), 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) [2024-11-09 05:17:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15903 states to 15903 states and 20099 transitions. [2024-11-09 05:17:11,318 INFO L78 Accepts]: Start accepts. Automaton has 15903 states and 20099 transitions. Word has length 76 [2024-11-09 05:17:11,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:17:11,318 INFO L471 AbstractCegarLoop]: Abstraction has 15903 states and 20099 transitions. [2024-11-09 05:17:11,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 19 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) [2024-11-09 05:17:11,319 INFO L276 IsEmpty]: Start isEmpty. Operand 15903 states and 20099 transitions. [2024-11-09 05:17:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 05:17:11,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:17:11,321 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:17:11,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:17:11,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:17:11,526 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:17:11,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:17:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash 164240107, now seen corresponding path program 1 times [2024-11-09 05:17:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:17:11,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976474067] [2024-11-09 05:17:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:17:11,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:17:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:17:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:17:12,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:17:12,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976474067] [2024-11-09 05:17:12,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976474067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:17:12,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006950483] [2024-11-09 05:17:12,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:17:12,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:17:12,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:17:12,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:17:12,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:17:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:17:13,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 05:17:13,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:17:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:17:14,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:17:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:17:20,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006950483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:17:20,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1847865848] [2024-11-09 05:17:20,897 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2024-11-09 05:17:20,897 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:17:20,901 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:17:20,906 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:17:20,906 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:17:23,185 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:17:35,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1847865848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:17:35,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:17:35,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [18, 17, 17] total 81 [2024-11-09 05:17:35,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197603861] [2024-11-09 05:17:35,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:17:35,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-09 05:17:35,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:17:35,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-09 05:17:35,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=928, Invalid=5552, Unknown=0, NotChecked=0, Total=6480 [2024-11-09 05:17:35,647 INFO L87 Difference]: Start difference. First operand 15903 states and 20099 transitions. Second operand has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:17:39,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:17:39,442 INFO L93 Difference]: Finished difference Result 21185 states and 26866 transitions. [2024-11-09 05:17:39,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-09 05:17:39,442 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-09 05:17:39,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:17:39,464 INFO L225 Difference]: With dead ends: 21185 [2024-11-09 05:17:39,464 INFO L226 Difference]: Without dead ends: 15866 [2024-11-09 05:17:39,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 164 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3090 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=928, Invalid=5552, Unknown=0, NotChecked=0, Total=6480 [2024-11-09 05:17:39,473 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 9 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2608 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:17:39,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 183 Invalid, 2609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2608 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 05:17:39,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15866 states. [2024-11-09 05:17:39,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15866 to 15866. [2024-11-09 05:17:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15866 states, 15865 states have (on average 1.263977308540813) internal successors, (20053), 15865 states have internal predecessors, (20053), 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) [2024-11-09 05:17:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15866 states to 15866 states and 20053 transitions. [2024-11-09 05:17:39,677 INFO L78 Accepts]: Start accepts. Automaton has 15866 states and 20053 transitions. Word has length 76 [2024-11-09 05:17:39,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:17:39,677 INFO L471 AbstractCegarLoop]: Abstraction has 15866 states and 20053 transitions. [2024-11-09 05:17:39,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:17:39,677 INFO L276 IsEmpty]: Start isEmpty. Operand 15866 states and 20053 transitions. [2024-11-09 05:17:39,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-09 05:17:39,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:17:39,680 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:17:39,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:17:39,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-09 05:17:39,885 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:17:39,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:17:39,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1583330277, now seen corresponding path program 1 times [2024-11-09 05:17:39,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:17:39,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824481123] [2024-11-09 05:17:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:17:39,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:17:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:17:41,084 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:17:41,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:17:41,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824481123] [2024-11-09 05:17:41,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824481123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:17:41,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777645557] [2024-11-09 05:17:41,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:17:41,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:17:41,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:17:41,087 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:17:41,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:17:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:17:41,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 05:17:41,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:17:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:17:44,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:18:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:18:08,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777645557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:18:08,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [676677365] [2024-11-09 05:18:08,658 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2024-11-09 05:18:08,658 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:18:08,659 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:18:08,659 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:18:08,659 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:18:13,848 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:18:33,013 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '384669#(and (<= ~__return_6532~0 1) (<= 0 ~__return_6532~0) (exists ((|v_ULTIMATE.start_main_~assert__arg~2#1_27| Int)) (= (mod |v_ULTIMATE.start_main_~assert__arg~2#1_27| 256) 0)))' at error location [2024-11-09 05:18:33,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:18:33,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:18:33,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 24, 23] total 58 [2024-11-09 05:18:33,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022967256] [2024-11-09 05:18:33,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:18:33,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-09 05:18:33,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:18:33,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-09 05:18:33,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=10891, Unknown=1, NotChecked=0, Total=12432 [2024-11-09 05:18:33,018 INFO L87 Difference]: Start difference. First operand 15866 states and 20053 transitions. Second operand has 58 states, 58 states have (on average 4.0344827586206895) internal successors, (234), 58 states have internal predecessors, (234), 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) [2024-11-09 05:21:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:21:35,880 INFO L93 Difference]: Finished difference Result 49618 states and 63032 transitions. [2024-11-09 05:21:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2024-11-09 05:21:35,880 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.0344827586206895) internal successors, (234), 58 states have internal predecessors, (234), 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 79 [2024-11-09 05:21:35,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:21:35,938 INFO L225 Difference]: With dead ends: 49618 [2024-11-09 05:21:35,939 INFO L226 Difference]: Without dead ends: 41737 [2024-11-09 05:21:35,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 137 SyntacticMatches, 4 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 65451 ImplicationChecksByTransitivity, 189.7s TimeCoverageRelationStatistics Valid=12933, Invalid=134906, Unknown=1, NotChecked=0, Total=147840 [2024-11-09 05:21:35,972 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 4893 mSDsluCounter, 5297 mSDsCounter, 0 mSdLazyCounter, 13264 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4893 SdHoareTripleChecker+Valid, 5571 SdHoareTripleChecker+Invalid, 13649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 13264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:21:35,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4893 Valid, 5571 Invalid, 13649 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [385 Valid, 13264 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2024-11-09 05:21:35,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41737 states. [2024-11-09 05:21:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41737 to 27442. [2024-11-09 05:21:36,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27442 states, 27441 states have (on average 1.250136656827375) internal successors, (34305), 27441 states have internal predecessors, (34305), 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) [2024-11-09 05:21:36,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27442 states to 27442 states and 34305 transitions. [2024-11-09 05:21:36,518 INFO L78 Accepts]: Start accepts. Automaton has 27442 states and 34305 transitions. Word has length 79 [2024-11-09 05:21:36,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:21:36,519 INFO L471 AbstractCegarLoop]: Abstraction has 27442 states and 34305 transitions. [2024-11-09 05:21:36,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.0344827586206895) internal successors, (234), 58 states have internal predecessors, (234), 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) [2024-11-09 05:21:36,519 INFO L276 IsEmpty]: Start isEmpty. Operand 27442 states and 34305 transitions. [2024-11-09 05:21:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-09 05:21:36,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:21:36,523 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:21:36,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 05:21:36,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 05:21:36,724 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:21:36,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:21:36,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1515278264, now seen corresponding path program 1 times [2024-11-09 05:21:36,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:21:36,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665031974] [2024-11-09 05:21:36,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:21:36,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:21:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:21:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:21:38,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:21:38,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665031974] [2024-11-09 05:21:38,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665031974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:21:38,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649895451] [2024-11-09 05:21:38,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:21:38,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:21:38,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:21:38,007 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:21:38,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:21:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:21:38,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-09 05:21:38,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:21:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:21:41,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:22:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:22:17,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649895451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:22:17,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1678706027] [2024-11-09 05:22:17,378 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2024-11-09 05:22:17,378 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:22:17,379 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:22:17,379 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:22:17,382 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:22:23,536 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:22:43,807 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '462856#(and (<= ~__return_6532~0 1) (<= 0 ~__return_6532~0) (<= 0 ~mode3~0) (<= ~mode2~0 1) (<= ~mode3~0 1) (exists ((|v_ULTIMATE.start_main_~assert__arg~2#1_41| Int)) (= (mod |v_ULTIMATE.start_main_~assert__arg~2#1_41| 256) 0)) (<= ~mode1~0 1))' at error location [2024-11-09 05:22:43,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:22:43,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:22:43,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 24, 24] total 59 [2024-11-09 05:22:43,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002091885] [2024-11-09 05:22:43,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:22:43,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-09 05:22:43,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:22:43,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-09 05:22:43,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1479, Invalid=11403, Unknown=0, NotChecked=0, Total=12882 [2024-11-09 05:22:43,812 INFO L87 Difference]: Start difference. First operand 27442 states and 34305 transitions. Second operand has 59 states, 59 states have (on average 3.9661016949152543) internal successors, (234), 59 states have internal predecessors, (234), 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) [2024-11-09 05:30:06,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:30:06,378 INFO L93 Difference]: Finished difference Result 81057 states and 102129 transitions. [2024-11-09 05:30:06,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 506 states. [2024-11-09 05:30:06,379 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.9661016949152543) internal successors, (234), 59 states have internal predecessors, (234), 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 79 [2024-11-09 05:30:06,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:30:06,463 INFO L225 Difference]: With dead ends: 81057 [2024-11-09 05:30:06,463 INFO L226 Difference]: Without dead ends: 74421 [2024-11-09 05:30:06,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 612 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 172025 ImplicationChecksByTransitivity, 445.8s TimeCoverageRelationStatistics Valid=30238, Invalid=346144, Unknown=0, NotChecked=0, Total=376382 [2024-11-09 05:30:06,502 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 8211 mSDsluCounter, 4807 mSDsCounter, 0 mSdLazyCounter, 11838 mSolverCounterSat, 773 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8211 SdHoareTripleChecker+Valid, 5039 SdHoareTripleChecker+Invalid, 12611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 773 IncrementalHoareTripleChecker+Valid, 11838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:30:06,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8211 Valid, 5039 Invalid, 12611 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [773 Valid, 11838 Invalid, 0 Unknown, 0 Unchecked, 20.3s Time] [2024-11-09 05:30:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74421 states. [2024-11-09 05:30:07,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74421 to 45262. [2024-11-09 05:30:07,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45262 states, 45261 states have (on average 1.2427476193632487) internal successors, (56248), 45261 states have internal predecessors, (56248), 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) [2024-11-09 05:30:07,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45262 states to 45262 states and 56248 transitions. [2024-11-09 05:30:07,500 INFO L78 Accepts]: Start accepts. Automaton has 45262 states and 56248 transitions. Word has length 79 [2024-11-09 05:30:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:30:07,500 INFO L471 AbstractCegarLoop]: Abstraction has 45262 states and 56248 transitions. [2024-11-09 05:30:07,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.9661016949152543) internal successors, (234), 59 states have internal predecessors, (234), 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) [2024-11-09 05:30:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 45262 states and 56248 transitions. [2024-11-09 05:30:07,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-09 05:30:07,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:30:07,506 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:30:07,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:30:07,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51c1670a-1395-4181-9dba-a35eee03e904/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 05:30:07,711 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:30:07,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:30:07,714 INFO L85 PathProgramCache]: Analyzing trace with hash -112807598, now seen corresponding path program 1 times [2024-11-09 05:30:07,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:30:07,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706903876] [2024-11-09 05:30:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:30:07,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:30:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:30:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 05:30:08,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:30:08,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706903876] [2024-11-09 05:30:08,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706903876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:30:08,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:30:08,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:30:08,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442183814] [2024-11-09 05:30:08,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:30:08,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:30:08,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:30:08,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:30:08,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:30:08,066 INFO L87 Difference]: Start difference. First operand 45262 states and 56248 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 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) [2024-11-09 05:30:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:30:08,528 INFO L93 Difference]: Finished difference Result 57224 states and 71415 transitions. [2024-11-09 05:30:08,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:30:08,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 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 80 [2024-11-09 05:30:08,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:30:08,606 INFO L225 Difference]: With dead ends: 57224 [2024-11-09 05:30:08,607 INFO L226 Difference]: Without dead ends: 50847 [2024-11-09 05:30:08,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:30:08,625 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 566 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:30:08,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 216 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:30:08,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50847 states. [2024-11-09 05:30:09,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50847 to 50843. [2024-11-09 05:30:09,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50843 states, 50842 states have (on average 1.2404114708312026) internal successors, (63065), 50842 states have internal predecessors, (63065), 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) [2024-11-09 05:30:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50843 states to 50843 states and 63065 transitions. [2024-11-09 05:30:09,210 INFO L78 Accepts]: Start accepts. Automaton has 50843 states and 63065 transitions. Word has length 80 [2024-11-09 05:30:09,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:30:09,210 INFO L471 AbstractCegarLoop]: Abstraction has 50843 states and 63065 transitions. [2024-11-09 05:30:09,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 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) [2024-11-09 05:30:09,210 INFO L276 IsEmpty]: Start isEmpty. Operand 50843 states and 63065 transitions. [2024-11-09 05:30:09,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-09 05:30:09,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:30:09,213 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:30:09,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-09 05:30:09,214 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:30:09,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:30:09,214 INFO L85 PathProgramCache]: Analyzing trace with hash 9704461, now seen corresponding path program 1 times [2024-11-09 05:30:09,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:30:09,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963451314] [2024-11-09 05:30:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:30:09,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:30:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:30:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:30:10,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:30:10,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963451314] [2024-11-09 05:30:10,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963451314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:30:10,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:30:10,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 05:30:10,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117361089] [2024-11-09 05:30:10,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:30:10,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 05:30:10,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:30:10,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 05:30:10,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:30:10,090 INFO L87 Difference]: Start difference. First operand 50843 states and 63065 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 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) [2024-11-09 05:30:11,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:30:11,243 INFO L93 Difference]: Finished difference Result 85381 states and 106314 transitions. [2024-11-09 05:30:11,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 05:30:11,244 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 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 80 [2024-11-09 05:30:11,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:30:11,304 INFO L225 Difference]: With dead ends: 85381 [2024-11-09 05:30:11,304 INFO L226 Difference]: Without dead ends: 54886 [2024-11-09 05:30:11,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2024-11-09 05:30:11,327 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 336 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:30:11,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 791 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:30:11,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54886 states. [2024-11-09 05:30:11,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54886 to 49991. [2024-11-09 05:30:11,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49991 states, 49990 states have (on average 1.2414082816563312) internal successors, (62058), 49990 states have internal predecessors, (62058), 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) [2024-11-09 05:30:11,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49991 states to 49991 states and 62058 transitions. [2024-11-09 05:30:11,893 INFO L78 Accepts]: Start accepts. Automaton has 49991 states and 62058 transitions. Word has length 80 [2024-11-09 05:30:11,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:30:11,893 INFO L471 AbstractCegarLoop]: Abstraction has 49991 states and 62058 transitions. [2024-11-09 05:30:11,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 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) [2024-11-09 05:30:11,894 INFO L276 IsEmpty]: Start isEmpty. Operand 49991 states and 62058 transitions. [2024-11-09 05:30:11,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-09 05:30:11,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:30:11,898 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:30:11,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-09 05:30:11,898 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:30:11,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:30:11,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1269846930, now seen corresponding path program 1 times [2024-11-09 05:30:11,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:30:11,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088952371] [2024-11-09 05:30:11,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:30:11,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:30:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:30:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 05:30:12,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:30:12,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088952371] [2024-11-09 05:30:12,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088952371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:30:12,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:30:12,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:30:12,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557628128] [2024-11-09 05:30:12,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:30:12,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:30:12,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:30:12,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:30:12,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:30:12,250 INFO L87 Difference]: Start difference. First operand 49991 states and 62058 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 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) [2024-11-09 05:30:12,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:30:12,636 INFO L93 Difference]: Finished difference Result 64486 states and 80291 transitions. [2024-11-09 05:30:12,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:30:12,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 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 80 [2024-11-09 05:30:12,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:30:12,698 INFO L225 Difference]: With dead ends: 64486 [2024-11-09 05:30:12,698 INFO L226 Difference]: Without dead ends: 56785 [2024-11-09 05:30:12,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:30:12,714 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 634 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:30:12,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 202 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:30:12,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56785 states. [2024-11-09 05:30:13,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56785 to 56781. [2024-11-09 05:30:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56781 states, 56780 states have (on average 1.2355935188446636) internal successors, (70157), 56780 states have internal predecessors, (70157), 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) [2024-11-09 05:30:14,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56781 states to 56781 states and 70157 transitions. [2024-11-09 05:30:14,017 INFO L78 Accepts]: Start accepts. Automaton has 56781 states and 70157 transitions. Word has length 80 [2024-11-09 05:30:14,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:30:14,017 INFO L471 AbstractCegarLoop]: Abstraction has 56781 states and 70157 transitions. [2024-11-09 05:30:14,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 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) [2024-11-09 05:30:14,018 INFO L276 IsEmpty]: Start isEmpty. Operand 56781 states and 70157 transitions. [2024-11-09 05:30:14,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-09 05:30:14,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:30:14,024 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:30:14,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-09 05:30:14,025 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:30:14,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:30:14,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1625807831, now seen corresponding path program 1 times [2024-11-09 05:30:14,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:30:14,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369915204] [2024-11-09 05:30:14,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:30:14,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:30:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat