./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d5cb8d9caea7ccafc5dde86756b709e1bbbadc4ec66724ae09094031008d598 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:27:26,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:27:26,443 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:27:26,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:27:26,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:27:26,482 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:27:26,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:27:26,483 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:27:26,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:27:26,484 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:27:26,485 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:27:26,485 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:27:26,486 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:27:26,486 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:27:26,487 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:27:26,487 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:27:26,488 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:27:26,488 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:27:26,489 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:27:26,489 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:27:26,490 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:27:26,494 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:27:26,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:27:26,495 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:27:26,496 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:27:26,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:27:26,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:27:26,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:27:26,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:27:26,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:27:26,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:27:26,498 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:27:26,498 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:27:26,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:27:26,499 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:27:26,499 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:27:26,500 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:27:26,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:27:26,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:26,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:27:26,501 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:27:26,501 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:27:26,502 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:27:26,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:27:26,502 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:27:26,503 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:27:26,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:27:26,503 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_6ad86e70-acff-4552-99be-7811cd4aad5a/bin/utaipan-verify-DbMuA5NWw2/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d5cb8d9caea7ccafc5dde86756b709e1bbbadc4ec66724ae09094031008d598 [2024-11-02 12:27:26,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:27:26,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:27:26,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:27:26,844 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:27:26,844 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:27:26,846 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c Unable to find full path for "g++" [2024-11-02 12:27:29,053 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:27:29,333 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:27:29,334 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2024-11-02 12:27:29,351 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/bin/utaipan-verify-DbMuA5NWw2/data/33fa0dd97/6ba73df7a8f8415b9342069998dd95f5/FLAG26e787793 [2024-11-02 12:27:29,367 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/bin/utaipan-verify-DbMuA5NWw2/data/33fa0dd97/6ba73df7a8f8415b9342069998dd95f5 [2024-11-02 12:27:29,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:27:29,373 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:27:29,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:29,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:27:29,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:27:29,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:29" (1/1) ... [2024-11-02 12:27:29,387 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d73e399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:29, skipping insertion in model container [2024-11-02 12:27:29,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:29" (1/1) ... [2024-11-02 12:27:29,443 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:27:29,768 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10276,10289] [2024-11-02 12:27:29,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:29,849 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:27:29,923 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10276,10289] [2024-11-02 12:27:29,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:29,998 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:27:29,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:29 WrapperNode [2024-11-02 12:27:29,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:30,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:30,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:27:30,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:27:30,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:29" (1/1) ... [2024-11-02 12:27:30,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:29" (1/1) ... [2024-11-02 12:27:30,099 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 892 [2024-11-02 12:27:30,099 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:30,100 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:27:30,100 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:27:30,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:27:30,113 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:29" (1/1) ... [2024-11-02 12:27:30,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:29" (1/1) ... [2024-11-02 12:27:30,118 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:29" (1/1) ... [2024-11-02 12:27:30,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:29" (1/1) ... [2024-11-02 12:27:30,131 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:29" (1/1) ... [2024-11-02 12:27:30,138 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:29" (1/1) ... [2024-11-02 12:27:30,141 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:29" (1/1) ... [2024-11-02 12:27:30,144 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:29" (1/1) ... [2024-11-02 12:27:30,149 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:27:30,150 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:27:30,151 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:27:30,151 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:27:30,152 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:29" (1/1) ... [2024-11-02 12:27:30,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:30,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:30,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:27:30,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ad86e70-acff-4552-99be-7811cd4aad5a/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:27:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:27:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:27:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:27:30,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:27:30,449 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:27:30,451 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:27:31,476 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2024-11-02 12:27:31,476 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:27:32,001 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:27:32,002 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:27:32,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:32 BoogieIcfgContainer [2024-11-02 12:27:32,003 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:27:32,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:27:32,007 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:27:32,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:27:32,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:27:29" (1/3) ... [2024-11-02 12:27:32,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586e9de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:32, skipping insertion in model container [2024-11-02 12:27:32,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:29" (2/3) ... [2024-11-02 12:27:32,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586e9de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:32, skipping insertion in model container [2024-11-02 12:27:32,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:32" (3/3) ... [2024-11-02 12:27:32,018 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2024-11-02 12:27:32,038 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:27:32,038 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:27:32,111 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:27:32,119 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;@3d642f2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:27:32,119 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:27:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 116 states have (on average 1.5344827586206897) internal successors, (178), 117 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:32,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-02 12:27:32,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:32,138 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:32,139 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:32,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:32,146 INFO L85 PathProgramCache]: Analyzing trace with hash -333893939, now seen corresponding path program 1 times [2024-11-02 12:27:32,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:32,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593296821] [2024-11-02 12:27:32,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:32,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:33,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:33,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593296821] [2024-11-02 12:27:33,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593296821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:33,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:33,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:33,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580442573] [2024-11-02 12:27:33,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:33,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:33,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:33,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:33,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:33,561 INFO L87 Difference]: Start difference. First operand has 118 states, 116 states have (on average 1.5344827586206897) internal successors, (178), 117 states have internal predecessors, (178), 0 states have call successors, (0), 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 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:33,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:33,787 INFO L93 Difference]: Finished difference Result 297 states and 445 transitions. [2024-11-02 12:27:33,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:33,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2024-11-02 12:27:33,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:33,800 INFO L225 Difference]: With dead ends: 297 [2024-11-02 12:27:33,800 INFO L226 Difference]: Without dead ends: 183 [2024-11-02 12:27:33,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:33,806 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 117 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:33,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 410 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:27:33,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-02 12:27:33,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2024-11-02 12:27:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4722222222222223) internal successors, (265), 180 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:33,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 265 transitions. [2024-11-02 12:27:33,868 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 265 transitions. Word has length 46 [2024-11-02 12:27:33,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:33,869 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 265 transitions. [2024-11-02 12:27:33,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:33,869 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 265 transitions. [2024-11-02 12:27:33,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-02 12:27:33,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:33,873 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] [2024-11-02 12:27:33,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:27:33,874 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:33,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1429584983, now seen corresponding path program 1 times [2024-11-02 12:27:33,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:33,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137116341] [2024-11-02 12:27:33,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:33,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:34,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:34,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137116341] [2024-11-02 12:27:34,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137116341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:34,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:34,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:34,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843641990] [2024-11-02 12:27:34,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:34,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:34,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:34,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:34,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:34,693 INFO L87 Difference]: Start difference. First operand 181 states and 265 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:34,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:34,850 INFO L93 Difference]: Finished difference Result 464 states and 681 transitions. [2024-11-02 12:27:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:34,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-02 12:27:34,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:34,853 INFO L225 Difference]: With dead ends: 464 [2024-11-02 12:27:34,853 INFO L226 Difference]: Without dead ends: 297 [2024-11-02 12:27:34,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:34,858 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 107 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:34,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 418 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:34,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-02 12:27:34,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2024-11-02 12:27:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.465986394557823) internal successors, (431), 294 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 431 transitions. [2024-11-02 12:27:34,889 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 431 transitions. Word has length 52 [2024-11-02 12:27:34,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:34,889 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 431 transitions. [2024-11-02 12:27:34,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:34,890 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 431 transitions. [2024-11-02 12:27:34,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-02 12:27:34,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:34,893 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:34,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:27:34,894 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:34,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:34,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2025482060, now seen corresponding path program 1 times [2024-11-02 12:27:34,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:34,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737320934] [2024-11-02 12:27:34,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:34,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:35,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:35,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737320934] [2024-11-02 12:27:35,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737320934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:35,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:35,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:35,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961400119] [2024-11-02 12:27:35,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:35,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:35,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:35,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:35,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:35,696 INFO L87 Difference]: Start difference. First operand 295 states and 431 transitions. Second operand has 4 states, 4 states have (on average 14.5) 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) [2024-11-02 12:27:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:35,855 INFO L93 Difference]: Finished difference Result 768 states and 1124 transitions. [2024-11-02 12:27:35,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:35,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) 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 [2024-11-02 12:27:35,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:35,864 INFO L225 Difference]: With dead ends: 768 [2024-11-02 12:27:35,865 INFO L226 Difference]: Without dead ends: 493 [2024-11-02 12:27:35,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:35,872 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 202 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:35,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 255 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:35,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2024-11-02 12:27:35,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491. [2024-11-02 12:27:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 490 states have (on average 1.457142857142857) internal successors, (714), 490 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:35,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 714 transitions. [2024-11-02 12:27:35,926 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 714 transitions. Word has length 58 [2024-11-02 12:27:35,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:35,927 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 714 transitions. [2024-11-02 12:27:35,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) 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) [2024-11-02 12:27:35,927 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 714 transitions. [2024-11-02 12:27:35,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-02 12:27:35,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:35,935 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] [2024-11-02 12:27:35,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:27:35,936 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:35,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:35,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1969566093, now seen corresponding path program 1 times [2024-11-02 12:27:35,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:35,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513159287] [2024-11-02 12:27:35,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:35,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:36,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:36,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513159287] [2024-11-02 12:27:36,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513159287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:36,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:36,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:36,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449633462] [2024-11-02 12:27:36,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:36,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:36,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:36,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:36,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:36,837 INFO L87 Difference]: Start difference. First operand 491 states and 714 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:36,962 INFO L93 Difference]: Finished difference Result 1286 states and 1870 transitions. [2024-11-02 12:27:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:36,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-11-02 12:27:36,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:36,966 INFO L225 Difference]: With dead ends: 1286 [2024-11-02 12:27:36,966 INFO L226 Difference]: Without dead ends: 821 [2024-11-02 12:27:36,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:36,968 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 95 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:36,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 370 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-02 12:27:36,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 819. [2024-11-02 12:27:36,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 1.4437652811735942) internal successors, (1181), 818 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:36,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1181 transitions. [2024-11-02 12:27:37,000 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1181 transitions. Word has length 64 [2024-11-02 12:27:37,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:37,000 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1181 transitions. [2024-11-02 12:27:37,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:37,001 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1181 transitions. [2024-11-02 12:27:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-02 12:27:37,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:37,006 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:37,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:27:37,007 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:37,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:37,008 INFO L85 PathProgramCache]: Analyzing trace with hash 439822874, now seen corresponding path program 1 times [2024-11-02 12:27:37,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:37,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993150500] [2024-11-02 12:27:37,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:37,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:37,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:37,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993150500] [2024-11-02 12:27:37,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993150500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:37,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:37,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:37,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303854854] [2024-11-02 12:27:37,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:37,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:37,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:37,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:37,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:37,924 INFO L87 Difference]: Start difference. First operand 819 states and 1181 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:38,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:38,015 INFO L93 Difference]: Finished difference Result 2136 states and 3072 transitions. [2024-11-02 12:27:38,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:38,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-11-02 12:27:38,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:38,020 INFO L225 Difference]: With dead ends: 2136 [2024-11-02 12:27:38,020 INFO L226 Difference]: Without dead ends: 1349 [2024-11-02 12:27:38,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:38,023 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 178 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:38,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 239 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2024-11-02 12:27:38,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1347. [2024-11-02 12:27:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1346 states have (on average 1.423476968796434) internal successors, (1916), 1346 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:38,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1916 transitions. [2024-11-02 12:27:38,093 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1916 transitions. Word has length 70 [2024-11-02 12:27:38,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:38,094 INFO L471 AbstractCegarLoop]: Abstraction has 1347 states and 1916 transitions. [2024-11-02 12:27:38,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:38,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1916 transitions. [2024-11-02 12:27:38,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-02 12:27:38,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:38,099 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:38,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:27:38,100 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:38,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:38,106 INFO L85 PathProgramCache]: Analyzing trace with hash -90319207, now seen corresponding path program 1 times [2024-11-02 12:27:38,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:38,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42756866] [2024-11-02 12:27:38,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:38,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:39,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:39,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42756866] [2024-11-02 12:27:39,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42756866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:39,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:39,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:39,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374992813] [2024-11-02 12:27:39,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:39,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:39,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:39,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:39,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:39,204 INFO L87 Difference]: Start difference. First operand 1347 states and 1916 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 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) [2024-11-02 12:27:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:39,354 INFO L93 Difference]: Finished difference Result 3132 states and 4384 transitions. [2024-11-02 12:27:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:39,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 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 76 [2024-11-02 12:27:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:39,363 INFO L225 Difference]: With dead ends: 3132 [2024-11-02 12:27:39,363 INFO L226 Difference]: Without dead ends: 1822 [2024-11-02 12:27:39,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:39,366 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 122 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:39,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 398 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:39,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2024-11-02 12:27:39,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1820. [2024-11-02 12:27:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1819 states have (on average 1.3820780648708082) internal successors, (2514), 1819 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:39,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2514 transitions. [2024-11-02 12:27:39,416 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2514 transitions. Word has length 76 [2024-11-02 12:27:39,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:39,416 INFO L471 AbstractCegarLoop]: Abstraction has 1820 states and 2514 transitions. [2024-11-02 12:27:39,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 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) [2024-11-02 12:27:39,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2514 transitions. [2024-11-02 12:27:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-02 12:27:39,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:39,421 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:39,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:27:39,421 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:39,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:39,422 INFO L85 PathProgramCache]: Analyzing trace with hash -803690777, now seen corresponding path program 1 times [2024-11-02 12:27:39,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:39,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009404350] [2024-11-02 12:27:39,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:39,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:39,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:39,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:39,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009404350] [2024-11-02 12:27:39,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009404350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:39,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:39,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:39,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054104955] [2024-11-02 12:27:39,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:39,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:39,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:39,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:39,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:39,625 INFO L87 Difference]: Start difference. First operand 1820 states and 2514 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:39,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:39,750 INFO L93 Difference]: Finished difference Result 4339 states and 6033 transitions. [2024-11-02 12:27:39,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:39,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-02 12:27:39,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:39,760 INFO L225 Difference]: With dead ends: 4339 [2024-11-02 12:27:39,760 INFO L226 Difference]: Without dead ends: 2555 [2024-11-02 12:27:39,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:39,763 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 130 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:39,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 411 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:39,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2024-11-02 12:27:39,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 2553. [2024-11-02 12:27:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2552 states have (on average 1.384012539184953) internal successors, (3532), 2552 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3532 transitions. [2024-11-02 12:27:39,830 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3532 transitions. Word has length 78 [2024-11-02 12:27:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:39,830 INFO L471 AbstractCegarLoop]: Abstraction has 2553 states and 3532 transitions. [2024-11-02 12:27:39,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:39,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3532 transitions. [2024-11-02 12:27:39,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-02 12:27:39,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:39,836 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:39,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:27:39,836 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:39,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:39,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1246120734, now seen corresponding path program 1 times [2024-11-02 12:27:39,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:39,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833209678] [2024-11-02 12:27:39,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:39,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:41,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:41,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833209678] [2024-11-02 12:27:41,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833209678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:41,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:41,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:41,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100717387] [2024-11-02 12:27:41,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:41,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:41,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:41,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:41,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:41,067 INFO L87 Difference]: Start difference. First operand 2553 states and 3532 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:41,251 INFO L93 Difference]: Finished difference Result 5071 states and 7017 transitions. [2024-11-02 12:27:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:41,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-02 12:27:41,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:41,260 INFO L225 Difference]: With dead ends: 5071 [2024-11-02 12:27:41,260 INFO L226 Difference]: Without dead ends: 2555 [2024-11-02 12:27:41,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:41,263 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 115 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:41,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 396 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2024-11-02 12:27:41,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 2553. [2024-11-02 12:27:41,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2552 states have (on average 1.3824451410658307) internal successors, (3528), 2552 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:41,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3528 transitions. [2024-11-02 12:27:41,331 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3528 transitions. Word has length 78 [2024-11-02 12:27:41,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:41,332 INFO L471 AbstractCegarLoop]: Abstraction has 2553 states and 3528 transitions. [2024-11-02 12:27:41,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:41,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3528 transitions. [2024-11-02 12:27:41,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-02 12:27:41,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:41,337 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:41,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:27:41,337 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:41,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:41,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2019270710, now seen corresponding path program 1 times [2024-11-02 12:27:41,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:41,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128066403] [2024-11-02 12:27:41,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:41,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:41,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:41,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128066403] [2024-11-02 12:27:41,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128066403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:41,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:41,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:41,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325126311] [2024-11-02 12:27:41,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:41,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:41,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:41,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:41,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:41,961 INFO L87 Difference]: Start difference. First operand 2553 states and 3528 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:42,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:42,271 INFO L93 Difference]: Finished difference Result 6194 states and 8592 transitions. [2024-11-02 12:27:42,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:42,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2024-11-02 12:27:42,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:42,284 INFO L225 Difference]: With dead ends: 6194 [2024-11-02 12:27:42,285 INFO L226 Difference]: Without dead ends: 3659 [2024-11-02 12:27:42,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:42,291 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 143 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:42,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 224 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:27:42,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2024-11-02 12:27:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3657. [2024-11-02 12:27:42,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3657 states, 3656 states have (on average 1.3812910284463895) internal successors, (5050), 3656 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:42,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3657 states to 3657 states and 5050 transitions. [2024-11-02 12:27:42,380 INFO L78 Accepts]: Start accepts. Automaton has 3657 states and 5050 transitions. Word has length 79 [2024-11-02 12:27:42,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:42,380 INFO L471 AbstractCegarLoop]: Abstraction has 3657 states and 5050 transitions. [2024-11-02 12:27:42,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:42,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3657 states and 5050 transitions. [2024-11-02 12:27:42,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-02 12:27:42,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:42,385 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:42,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:27:42,386 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:42,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:42,387 INFO L85 PathProgramCache]: Analyzing trace with hash -765970966, now seen corresponding path program 1 times [2024-11-02 12:27:42,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:42,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439614150] [2024-11-02 12:27:42,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:42,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:43,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:43,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439614150] [2024-11-02 12:27:43,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439614150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:43,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:43,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:43,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908853369] [2024-11-02 12:27:43,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:43,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:43,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:43,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:43,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:43,155 INFO L87 Difference]: Start difference. First operand 3657 states and 5050 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:43,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:43,426 INFO L93 Difference]: Finished difference Result 8968 states and 12428 transitions. [2024-11-02 12:27:43,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:43,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2024-11-02 12:27:43,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:43,441 INFO L225 Difference]: With dead ends: 8968 [2024-11-02 12:27:43,441 INFO L226 Difference]: Without dead ends: 5335 [2024-11-02 12:27:43,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:43,447 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 272 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:43,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 173 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:27:43,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5335 states. [2024-11-02 12:27:43,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5335 to 5333. [2024-11-02 12:27:43,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5333 states, 5332 states have (on average 1.3794073518379595) internal successors, (7355), 5332 states have internal predecessors, (7355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:43,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5333 states to 5333 states and 7355 transitions. [2024-11-02 12:27:43,576 INFO L78 Accepts]: Start accepts. Automaton has 5333 states and 7355 transitions. Word has length 79 [2024-11-02 12:27:43,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:43,577 INFO L471 AbstractCegarLoop]: Abstraction has 5333 states and 7355 transitions. [2024-11-02 12:27:43,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:43,577 INFO L276 IsEmpty]: Start isEmpty. Operand 5333 states and 7355 transitions. [2024-11-02 12:27:43,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-02 12:27:43,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:43,583 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:43,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:27:43,584 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:43,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:43,584 INFO L85 PathProgramCache]: Analyzing trace with hash 736865359, now seen corresponding path program 1 times [2024-11-02 12:27:43,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:43,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099936267] [2024-11-02 12:27:43,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:43,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:44,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:44,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:44,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099936267] [2024-11-02 12:27:44,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099936267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:44,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:44,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922395124] [2024-11-02 12:27:44,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:44,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:44,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:44,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:44,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:44,047 INFO L87 Difference]: Start difference. First operand 5333 states and 7355 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:44,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:44,366 INFO L93 Difference]: Finished difference Result 13426 states and 18592 transitions. [2024-11-02 12:27:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:44,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2024-11-02 12:27:44,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:44,401 INFO L225 Difference]: With dead ends: 13426 [2024-11-02 12:27:44,401 INFO L226 Difference]: Without dead ends: 8105 [2024-11-02 12:27:44,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:44,409 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 144 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:44,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 236 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:27:44,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8105 states. [2024-11-02 12:27:44,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8105 to 8103. [2024-11-02 12:27:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8103 states, 8102 states have (on average 1.3773142433966923) internal successors, (11159), 8102 states have internal predecessors, (11159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:44,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8103 states to 8103 states and 11159 transitions. [2024-11-02 12:27:44,595 INFO L78 Accepts]: Start accepts. Automaton has 8103 states and 11159 transitions. Word has length 79 [2024-11-02 12:27:44,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:44,595 INFO L471 AbstractCegarLoop]: Abstraction has 8103 states and 11159 transitions. [2024-11-02 12:27:44,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand 8103 states and 11159 transitions. [2024-11-02 12:27:44,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-02 12:27:44,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:44,605 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:44,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-02 12:27:44,606 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:44,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:44,607 INFO L85 PathProgramCache]: Analyzing trace with hash 308160628, now seen corresponding path program 1 times [2024-11-02 12:27:44,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:44,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379438520] [2024-11-02 12:27:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:44,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:45,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:45,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379438520] [2024-11-02 12:27:45,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379438520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:45,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:45,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:45,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220360565] [2024-11-02 12:27:45,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:45,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:45,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:45,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:45,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:45,052 INFO L87 Difference]: Start difference. First operand 8103 states and 11159 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:45,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:45,403 INFO L93 Difference]: Finished difference Result 16202 states and 22311 transitions. [2024-11-02 12:27:45,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:45,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2024-11-02 12:27:45,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:45,440 INFO L225 Difference]: With dead ends: 16202 [2024-11-02 12:27:45,440 INFO L226 Difference]: Without dead ends: 8105 [2024-11-02 12:27:45,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:45,453 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 290 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:45,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 201 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:27:45,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8105 states. [2024-11-02 12:27:45,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8105 to 8103. [2024-11-02 12:27:45,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8103 states, 8102 states have (on average 1.3637373488027646) internal successors, (11049), 8102 states have internal predecessors, (11049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:45,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8103 states to 8103 states and 11049 transitions. [2024-11-02 12:27:45,646 INFO L78 Accepts]: Start accepts. Automaton has 8103 states and 11049 transitions. Word has length 79 [2024-11-02 12:27:45,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:45,646 INFO L471 AbstractCegarLoop]: Abstraction has 8103 states and 11049 transitions. [2024-11-02 12:27:45,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:45,647 INFO L276 IsEmpty]: Start isEmpty. Operand 8103 states and 11049 transitions. [2024-11-02 12:27:45,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-02 12:27:45,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:45,655 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:45,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-02 12:27:45,655 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:45,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:45,656 INFO L85 PathProgramCache]: Analyzing trace with hash 890075754, now seen corresponding path program 1 times [2024-11-02 12:27:45,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:45,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228837587] [2024-11-02 12:27:45,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:45,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:45,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:45,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228837587] [2024-11-02 12:27:45,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228837587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:45,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:45,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:45,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638446673] [2024-11-02 12:27:45,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:45,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:27:45,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:45,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:27:45,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:45,807 INFO L87 Difference]: Start difference. First operand 8103 states and 11049 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:45,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:45,913 INFO L93 Difference]: Finished difference Result 12839 states and 17571 transitions. [2024-11-02 12:27:45,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:27:45,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2024-11-02 12:27:45,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:45,924 INFO L225 Difference]: With dead ends: 12839 [2024-11-02 12:27:45,924 INFO L226 Difference]: Without dead ends: 5027 [2024-11-02 12:27:45,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:45,931 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 59 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:45,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 230 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:45,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2024-11-02 12:27:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 4701. [2024-11-02 12:27:46,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4701 states, 4700 states have (on average 1.365531914893617) internal successors, (6418), 4700 states have internal predecessors, (6418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:46,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4701 states to 4701 states and 6418 transitions. [2024-11-02 12:27:46,021 INFO L78 Accepts]: Start accepts. Automaton has 4701 states and 6418 transitions. Word has length 79 [2024-11-02 12:27:46,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:46,021 INFO L471 AbstractCegarLoop]: Abstraction has 4701 states and 6418 transitions. [2024-11-02 12:27:46,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:46,022 INFO L276 IsEmpty]: Start isEmpty. Operand 4701 states and 6418 transitions. [2024-11-02 12:27:46,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-02 12:27:46,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:46,025 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:46,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-02 12:27:46,025 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:46,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:46,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1219695390, now seen corresponding path program 1 times [2024-11-02 12:27:46,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:46,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407494847] [2024-11-02 12:27:46,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:46,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:46,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:46,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:46,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407494847] [2024-11-02 12:27:46,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407494847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:46,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:46,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:46,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414709091] [2024-11-02 12:27:46,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:46,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:27:46,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:46,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:27:46,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:46,178 INFO L87 Difference]: Start difference. First operand 4701 states and 6418 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:46,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:46,255 INFO L93 Difference]: Finished difference Result 6201 states and 8468 transitions. [2024-11-02 12:27:46,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:27:46,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2024-11-02 12:27:46,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:46,281 INFO L225 Difference]: With dead ends: 6201 [2024-11-02 12:27:46,281 INFO L226 Difference]: Without dead ends: 1667 [2024-11-02 12:27:46,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:46,284 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 54 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:46,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 233 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:46,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2024-11-02 12:27:46,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1665. [2024-11-02 12:27:46,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1664 states have (on average 1.3497596153846154) internal successors, (2246), 1664 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:46,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2246 transitions. [2024-11-02 12:27:46,311 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2246 transitions. Word has length 79 [2024-11-02 12:27:46,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:46,313 INFO L471 AbstractCegarLoop]: Abstraction has 1665 states and 2246 transitions. [2024-11-02 12:27:46,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:46,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2246 transitions. [2024-11-02 12:27:46,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-02 12:27:46,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:46,317 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:46,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-02 12:27:46,318 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:46,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:46,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1157322998, now seen corresponding path program 1 times [2024-11-02 12:27:46,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:46,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769250935] [2024-11-02 12:27:46,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:46,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:46,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:46,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769250935] [2024-11-02 12:27:46,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769250935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:46,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:46,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:46,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047001910] [2024-11-02 12:27:46,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:46,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:27:46,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:46,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:27:46,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:46,482 INFO L87 Difference]: Start difference. First operand 1665 states and 2246 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:46,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:46,545 INFO L93 Difference]: Finished difference Result 2433 states and 3283 transitions. [2024-11-02 12:27:46,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:27:46,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2024-11-02 12:27:46,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:46,547 INFO L225 Difference]: With dead ends: 2433 [2024-11-02 12:27:46,547 INFO L226 Difference]: Without dead ends: 879 [2024-11-02 12:27:46,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:46,551 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 48 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:46,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 235 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:46,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2024-11-02 12:27:46,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2024-11-02 12:27:46,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.32648401826484) internal successors, (1162), 876 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1162 transitions. [2024-11-02 12:27:46,566 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1162 transitions. Word has length 79 [2024-11-02 12:27:46,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:46,567 INFO L471 AbstractCegarLoop]: Abstraction has 877 states and 1162 transitions. [2024-11-02 12:27:46,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1162 transitions. [2024-11-02 12:27:46,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-02 12:27:46,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:46,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:46,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-02 12:27:46,570 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:46,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:46,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1707310686, now seen corresponding path program 1 times [2024-11-02 12:27:46,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:46,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097269202] [2024-11-02 12:27:46,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:46,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:47,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:47,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097269202] [2024-11-02 12:27:47,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097269202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:47,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:47,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:27:47,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480199097] [2024-11-02 12:27:47,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:47,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:27:47,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:47,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:27:47,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:27:47,625 INFO L87 Difference]: Start difference. First operand 877 states and 1162 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:47,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:47,772 INFO L93 Difference]: Finished difference Result 1724 states and 2288 transitions. [2024-11-02 12:27:47,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:47,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2024-11-02 12:27:47,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:47,775 INFO L225 Difference]: With dead ends: 1724 [2024-11-02 12:27:47,775 INFO L226 Difference]: Without dead ends: 877 [2024-11-02 12:27:47,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:27:47,777 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 88 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:47,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 60 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:47,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2024-11-02 12:27:47,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2024-11-02 12:27:47,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.3105022831050228) internal successors, (1148), 876 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:47,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1148 transitions. [2024-11-02 12:27:47,796 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1148 transitions. Word has length 79 [2024-11-02 12:27:47,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:47,796 INFO L471 AbstractCegarLoop]: Abstraction has 877 states and 1148 transitions. [2024-11-02 12:27:47,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:47,797 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1148 transitions. [2024-11-02 12:27:47,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-02 12:27:47,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:47,801 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:47,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-02 12:27:47,801 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:47,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:47,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1313788605, now seen corresponding path program 1 times [2024-11-02 12:27:47,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:47,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070964723] [2024-11-02 12:27:47,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:47,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:48,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:48,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070964723] [2024-11-02 12:27:48,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070964723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:48,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:48,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:27:48,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225375727] [2024-11-02 12:27:48,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:48,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:27:48,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:48,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:27:48,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:27:48,662 INFO L87 Difference]: Start difference. First operand 877 states and 1148 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:48,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:48,793 INFO L93 Difference]: Finished difference Result 1371 states and 1803 transitions. [2024-11-02 12:27:48,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:48,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2024-11-02 12:27:48,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:48,796 INFO L225 Difference]: With dead ends: 1371 [2024-11-02 12:27:48,796 INFO L226 Difference]: Without dead ends: 877 [2024-11-02 12:27:48,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:27:48,798 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 89 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:48,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 60 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:48,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2024-11-02 12:27:48,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 605. [2024-11-02 12:27:48,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 604 states have (on average 1.2930463576158941) internal successors, (781), 604 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 781 transitions. [2024-11-02 12:27:48,809 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 781 transitions. Word has length 79 [2024-11-02 12:27:48,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:48,810 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 781 transitions. [2024-11-02 12:27:48,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:48,810 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 781 transitions. [2024-11-02 12:27:48,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-02 12:27:48,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:48,812 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:48,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-02 12:27:48,812 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:48,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1139148158, now seen corresponding path program 1 times [2024-11-02 12:27:48,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:48,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30502854] [2024-11-02 12:27:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:48,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:49,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:49,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30502854] [2024-11-02 12:27:49,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30502854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:49,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:49,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:27:49,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997348987] [2024-11-02 12:27:49,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:49,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:27:49,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:49,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:27:49,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:27:49,561 INFO L87 Difference]: Start difference. First operand 605 states and 781 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:49,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:49,688 INFO L93 Difference]: Finished difference Result 1099 states and 1428 transitions. [2024-11-02 12:27:49,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:49,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2024-11-02 12:27:49,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:49,690 INFO L225 Difference]: With dead ends: 1099 [2024-11-02 12:27:49,690 INFO L226 Difference]: Without dead ends: 605 [2024-11-02 12:27:49,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:27:49,692 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 90 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:49,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 60 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:49,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-02 12:27:49,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2024-11-02 12:27:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 604 states have (on average 1.2764900662251655) internal successors, (771), 604 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 771 transitions. [2024-11-02 12:27:49,702 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 771 transitions. Word has length 79 [2024-11-02 12:27:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:49,703 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 771 transitions. [2024-11-02 12:27:49,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 771 transitions. [2024-11-02 12:27:49,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-02 12:27:49,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:49,705 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:49,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-02 12:27:49,705 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:49,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:49,705 INFO L85 PathProgramCache]: Analyzing trace with hash -307881437, now seen corresponding path program 1 times [2024-11-02 12:27:49,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:49,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973485707] [2024-11-02 12:27:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:49,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:50,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:50,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973485707] [2024-11-02 12:27:50,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973485707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:50,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:50,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:27:50,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039497329] [2024-11-02 12:27:50,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:50,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:27:50,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:50,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:27:50,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:27:50,830 INFO L87 Difference]: Start difference. First operand 605 states and 771 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:51,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:51,148 INFO L93 Difference]: Finished difference Result 1099 states and 1408 transitions. [2024-11-02 12:27:51,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:27:51,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2024-11-02 12:27:51,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:51,151 INFO L225 Difference]: With dead ends: 1099 [2024-11-02 12:27:51,151 INFO L226 Difference]: Without dead ends: 605 [2024-11-02 12:27:51,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:27:51,153 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 119 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:51,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 216 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:27:51,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-02 12:27:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2024-11-02 12:27:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 604 states have (on average 1.2566225165562914) internal successors, (759), 604 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 759 transitions. [2024-11-02 12:27:51,165 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 759 transitions. Word has length 79 [2024-11-02 12:27:51,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:51,166 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 759 transitions. [2024-11-02 12:27:51,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:51,166 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 759 transitions. [2024-11-02 12:27:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-02 12:27:51,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:51,168 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:51,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-02 12:27:51,168 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:51,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:51,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1019503752, now seen corresponding path program 1 times [2024-11-02 12:27:51,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:51,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468530516] [2024-11-02 12:27:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:51,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat