./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f149a88-0735-4e01-9802-d8a2a64e658a/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f149a88-0735-4e01-9802-d8a2a64e658a/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_8f149a88-0735-4e01-9802-d8a2a64e658a/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f149a88-0735-4e01-9802-d8a2a64e658a/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f149a88-0735-4e01-9802-d8a2a64e658a/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_8f149a88-0735-4e01-9802-d8a2a64e658a/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 7155a8859e2806e57d4184cff6f07d8c67a6c5841bc646d358642ecb025a5a82 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:37:52,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:37:52,160 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f149a88-0735-4e01-9802-d8a2a64e658a/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:37:52,166 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:37:52,168 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:37:52,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:37:52,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:37:52,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:37:52,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:37:52,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:37:52,209 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:37:52,209 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:37:52,210 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:37:52,212 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:37:52,213 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:37:52,213 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:37:52,213 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:37:52,214 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:37:52,214 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:37:52,215 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:37:52,215 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:37:52,219 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:37:52,220 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:37:52,220 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:37:52,221 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:37:52,221 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:37:52,221 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:37:52,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:37:52,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:37:52,222 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:37:52,223 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:37:52,224 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:37:52,225 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:37:52,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:37:52,226 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:37:52,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:37:52,227 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:37:52,227 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:37:52,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:52,228 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:37:52,228 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:37:52,228 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:37:52,229 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:37:52,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:37:52,229 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:37:52,230 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:37:52,231 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:37:52,231 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_8f149a88-0735-4e01-9802-d8a2a64e658a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f149a88-0735-4e01-9802-d8a2a64e658a/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7155a8859e2806e57d4184cff6f07d8c67a6c5841bc646d358642ecb025a5a82 [2024-11-02 12:37:52,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:37:52,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:37:52,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:37:52,600 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:37:52,601 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:37:52,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f149a88-0735-4e01-9802-d8a2a64e658a/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c Unable to find full path for "g++" [2024-11-02 12:37:54,761 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:37:55,091 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:37:55,091 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f149a88-0735-4e01-9802-d8a2a64e658a/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-11-02 12:37:55,112 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f149a88-0735-4e01-9802-d8a2a64e658a/bin/utaipan-verify-DbMuA5NWw2/data/cd7ef2123/91f561b216de4b228ccc280de21da6f2/FLAG735bb5446 [2024-11-02 12:37:55,127 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f149a88-0735-4e01-9802-d8a2a64e658a/bin/utaipan-verify-DbMuA5NWw2/data/cd7ef2123/91f561b216de4b228ccc280de21da6f2 [2024-11-02 12:37:55,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:37:55,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:37:55,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:55,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:37:55,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:37:55,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:55" (1/1) ... [2024-11-02 12:37:55,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e6d546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:55, skipping insertion in model container [2024-11-02 12:37:55,142 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:37:55" (1/1) ... [2024-11-02 12:37:55,222 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:37:55,759 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_8f149a88-0735-4e01-9802-d8a2a64e658a/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15968,15981] [2024-11-02 12:37:55,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:55,971 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:37:56,113 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_8f149a88-0735-4e01-9802-d8a2a64e658a/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15968,15981] [2024-11-02 12:37:56,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:37:56,206 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:37:56,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:56 WrapperNode [2024-11-02 12:37:56,207 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:37:56,208 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:56,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:37:56,209 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:37:56,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:56" (1/1) ... [2024-11-02 12:37:56,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:56" (1/1) ... [2024-11-02 12:37:56,315 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1382 [2024-11-02 12:37:56,316 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:37:56,317 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:37:56,317 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:37:56,317 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:37:56,329 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:56" (1/1) ... [2024-11-02 12:37:56,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:56" (1/1) ... [2024-11-02 12:37:56,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:56" (1/1) ... [2024-11-02 12:37:56,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:56" (1/1) ... [2024-11-02 12:37:56,355 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:56" (1/1) ... [2024-11-02 12:37:56,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:56" (1/1) ... [2024-11-02 12:37:56,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:56" (1/1) ... [2024-11-02 12:37:56,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:56" (1/1) ... [2024-11-02 12:37:56,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:37:56,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:37:56,411 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:37:56,411 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:37:56,412 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:56" (1/1) ... [2024-11-02 12:37:56,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:37:56,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f149a88-0735-4e01-9802-d8a2a64e658a/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:37:56,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f149a88-0735-4e01-9802-d8a2a64e658a/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:37:56,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f149a88-0735-4e01-9802-d8a2a64e658a/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:37:56,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:37:56,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:37:56,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:37:56,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:37:56,717 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:37:56,719 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:37:58,502 INFO L? ?]: Removed 99 outVars from TransFormulas that were not future-live. [2024-11-02 12:37:58,504 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:37:59,186 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:37:59,187 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:37:59,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:59 BoogieIcfgContainer [2024-11-02 12:37:59,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:37:59,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:37:59,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:37:59,197 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:37:59,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:37:55" (1/3) ... [2024-11-02 12:37:59,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f0a465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:59, skipping insertion in model container [2024-11-02 12:37:59,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:37:56" (2/3) ... [2024-11-02 12:37:59,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f0a465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:37:59, skipping insertion in model container [2024-11-02 12:37:59,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:37:59" (3/3) ... [2024-11-02 12:37:59,202 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-11-02 12:37:59,227 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:37:59,228 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:37:59,325 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:37:59,333 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;@1ab3f49c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:37:59,334 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:37:59,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 249 states, 247 states have (on average 1.777327935222672) internal successors, (439), 248 states have internal predecessors, (439), 0 states have call successors, (0), 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 12:37:59,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-02 12:37:59,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:37:59,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:59,361 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:37:59,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:37:59,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1335861578, now seen corresponding path program 1 times [2024-11-02 12:37:59,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:37:59,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471722806] [2024-11-02 12:37:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:37:59,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:37:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:02,643 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 12:38:02,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:02,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471722806] [2024-11-02 12:38:02,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471722806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:02,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:02,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:38:02,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140970999] [2024-11-02 12:38:02,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:02,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:02,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:02,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:02,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:02,730 INFO L87 Difference]: Start difference. First operand has 249 states, 247 states have (on average 1.777327935222672) internal successors, (439), 248 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 12:38:03,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:03,209 INFO L93 Difference]: Finished difference Result 617 states and 1077 transitions. [2024-11-02 12:38:03,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:38:03,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2024-11-02 12:38:03,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:03,229 INFO L225 Difference]: With dead ends: 617 [2024-11-02 12:38:03,230 INFO L226 Difference]: Without dead ends: 423 [2024-11-02 12:38:03,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:03,241 INFO L432 NwaCegarLoop]: 697 mSDtfsCounter, 728 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:03,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1752 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:38:03,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-02 12:38:03,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 421. [2024-11-02 12:38:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.3857142857142857) internal successors, (582), 420 states have internal predecessors, (582), 0 states have call successors, (0), 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 12:38:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 582 transitions. [2024-11-02 12:38:03,358 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 582 transitions. Word has length 116 [2024-11-02 12:38:03,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:03,363 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 582 transitions. [2024-11-02 12:38:03,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 12:38:03,364 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 582 transitions. [2024-11-02 12:38:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-02 12:38:03,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:03,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:03,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:38:03,374 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:03,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:03,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1967346582, now seen corresponding path program 1 times [2024-11-02 12:38:03,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:03,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858637372] [2024-11-02 12:38:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:03,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:03,590 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 12:38:03,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:03,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858637372] [2024-11-02 12:38:03,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858637372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:03,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:03,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:03,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287679573] [2024-11-02 12:38:03,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:03,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:03,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:03,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:03,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:03,594 INFO L87 Difference]: Start difference. First operand 421 states and 582 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 12:38:03,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:03,750 INFO L93 Difference]: Finished difference Result 961 states and 1360 transitions. [2024-11-02 12:38:03,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:03,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2024-11-02 12:38:03,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:03,755 INFO L225 Difference]: With dead ends: 961 [2024-11-02 12:38:03,756 INFO L226 Difference]: Without dead ends: 597 [2024-11-02 12:38:03,758 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 12:38:03,762 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 225 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:03,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 649 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:03,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2024-11-02 12:38:03,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 533. [2024-11-02 12:38:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.4323308270676691) internal successors, (762), 532 states have internal predecessors, (762), 0 states have call successors, (0), 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 12:38:03,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 762 transitions. [2024-11-02 12:38:03,806 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 762 transitions. Word has length 118 [2024-11-02 12:38:03,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:03,806 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 762 transitions. [2024-11-02 12:38:03,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 12:38:03,808 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 762 transitions. [2024-11-02 12:38:03,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-02 12:38:03,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:03,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:03,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:38:03,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:03,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:03,815 INFO L85 PathProgramCache]: Analyzing trace with hash 153264830, now seen corresponding path program 1 times [2024-11-02 12:38:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:03,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133584624] [2024-11-02 12:38:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:03,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:04,166 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 12:38:04,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:04,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133584624] [2024-11-02 12:38:04,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133584624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:04,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:04,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:38:04,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150020812] [2024-11-02 12:38:04,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:04,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:04,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:04,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:04,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:04,170 INFO L87 Difference]: Start difference. First operand 533 states and 762 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 12:38:04,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:04,449 INFO L93 Difference]: Finished difference Result 1011 states and 1458 transitions. [2024-11-02 12:38:04,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:38:04,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2024-11-02 12:38:04,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:04,452 INFO L225 Difference]: With dead ends: 1011 [2024-11-02 12:38:04,453 INFO L226 Difference]: Without dead ends: 533 [2024-11-02 12:38:04,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:38:04,457 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 926 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:04,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 262 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:04,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-02 12:38:04,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-11-02 12:38:04,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.4172932330827068) internal successors, (754), 532 states have internal predecessors, (754), 0 states have call successors, (0), 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 12:38:04,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 754 transitions. [2024-11-02 12:38:04,484 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 754 transitions. Word has length 121 [2024-11-02 12:38:04,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:04,487 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 754 transitions. [2024-11-02 12:38:04,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 12:38:04,488 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 754 transitions. [2024-11-02 12:38:04,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-02 12:38:04,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:04,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:04,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:38:04,492 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:04,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:04,493 INFO L85 PathProgramCache]: Analyzing trace with hash -824711719, now seen corresponding path program 1 times [2024-11-02 12:38:04,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:04,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080019120] [2024-11-02 12:38:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:04,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:06,337 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 12:38:06,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:06,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080019120] [2024-11-02 12:38:06,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080019120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:06,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:06,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:38:06,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323581287] [2024-11-02 12:38:06,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:06,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:06,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:06,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:06,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:06,343 INFO L87 Difference]: Start difference. First operand 533 states and 754 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 12:38:06,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:06,546 INFO L93 Difference]: Finished difference Result 1476 states and 2106 transitions. [2024-11-02 12:38:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:38:06,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2024-11-02 12:38:06,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:06,551 INFO L225 Difference]: With dead ends: 1476 [2024-11-02 12:38:06,552 INFO L226 Difference]: Without dead ends: 990 [2024-11-02 12:38:06,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:06,558 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 549 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:06,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 889 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:06,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-11-02 12:38:06,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2024-11-02 12:38:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 987 states have (on average 1.4174265450861196) internal successors, (1399), 987 states have internal predecessors, (1399), 0 states have call successors, (0), 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 12:38:06,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1399 transitions. [2024-11-02 12:38:06,587 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1399 transitions. Word has length 121 [2024-11-02 12:38:06,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:06,588 INFO L471 AbstractCegarLoop]: Abstraction has 988 states and 1399 transitions. [2024-11-02 12:38:06,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 12:38:06,588 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1399 transitions. [2024-11-02 12:38:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-02 12:38:06,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:06,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:06,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:38:06,591 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:06,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:06,591 INFO L85 PathProgramCache]: Analyzing trace with hash -955956369, now seen corresponding path program 1 times [2024-11-02 12:38:06,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:06,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729607354] [2024-11-02 12:38:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:06,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:06,714 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 12:38:06,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:06,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729607354] [2024-11-02 12:38:06,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729607354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:06,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:06,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:06,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874604965] [2024-11-02 12:38:06,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:06,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:06,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:06,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:06,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:06,718 INFO L87 Difference]: Start difference. First operand 988 states and 1399 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 12:38:06,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:06,981 INFO L93 Difference]: Finished difference Result 2506 states and 3627 transitions. [2024-11-02 12:38:06,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:06,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2024-11-02 12:38:06,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:06,988 INFO L225 Difference]: With dead ends: 2506 [2024-11-02 12:38:06,989 INFO L226 Difference]: Without dead ends: 1560 [2024-11-02 12:38:06,990 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 12:38:06,993 INFO L432 NwaCegarLoop]: 454 mSDtfsCounter, 240 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:06,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 656 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:06,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2024-11-02 12:38:07,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1386. [2024-11-02 12:38:07,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 1.467870036101083) internal successors, (2033), 1385 states have internal predecessors, (2033), 0 states have call successors, (0), 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 12:38:07,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 2033 transitions. [2024-11-02 12:38:07,035 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 2033 transitions. Word has length 123 [2024-11-02 12:38:07,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:07,036 INFO L471 AbstractCegarLoop]: Abstraction has 1386 states and 2033 transitions. [2024-11-02 12:38:07,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 12:38:07,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 2033 transitions. [2024-11-02 12:38:07,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-02 12:38:07,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:07,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:07,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:38:07,039 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:07,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:07,040 INFO L85 PathProgramCache]: Analyzing trace with hash -568525580, now seen corresponding path program 1 times [2024-11-02 12:38:07,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:07,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479681871] [2024-11-02 12:38:07,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:07,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:08,658 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 12:38:08,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:08,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479681871] [2024-11-02 12:38:08,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479681871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:08,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:08,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:38:08,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391784638] [2024-11-02 12:38:08,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:08,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:08,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:08,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:08,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:08,661 INFO L87 Difference]: Start difference. First operand 1386 states and 2033 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 12:38:08,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:08,943 INFO L93 Difference]: Finished difference Result 3782 states and 5575 transitions. [2024-11-02 12:38:08,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:38:08,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-11-02 12:38:08,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:08,953 INFO L225 Difference]: With dead ends: 3782 [2024-11-02 12:38:08,954 INFO L226 Difference]: Without dead ends: 2536 [2024-11-02 12:38:08,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:08,957 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 763 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:08,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 791 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:38:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2024-11-02 12:38:09,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 2534. [2024-11-02 12:38:09,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 2533 states have (on average 1.4619028819581523) internal successors, (3703), 2533 states have internal predecessors, (3703), 0 states have call successors, (0), 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 12:38:09,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 3703 transitions. [2024-11-02 12:38:09,021 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 3703 transitions. Word has length 126 [2024-11-02 12:38:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:09,022 INFO L471 AbstractCegarLoop]: Abstraction has 2534 states and 3703 transitions. [2024-11-02 12:38:09,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 12:38:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 3703 transitions. [2024-11-02 12:38:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-02 12:38:09,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:09,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:09,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:38:09,026 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:09,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:09,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1997543430, now seen corresponding path program 1 times [2024-11-02 12:38:09,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:09,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127695744] [2024-11-02 12:38:09,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:09,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:09,156 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 12:38:09,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:09,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127695744] [2024-11-02 12:38:09,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127695744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:09,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:09,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:09,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148213335] [2024-11-02 12:38:09,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:09,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:09,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:09,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:09,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:09,160 INFO L87 Difference]: Start difference. First operand 2534 states and 3703 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 12:38:09,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:09,457 INFO L93 Difference]: Finished difference Result 6498 states and 9669 transitions. [2024-11-02 12:38:09,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:09,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2024-11-02 12:38:09,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:09,471 INFO L225 Difference]: With dead ends: 6498 [2024-11-02 12:38:09,471 INFO L226 Difference]: Without dead ends: 4084 [2024-11-02 12:38:09,476 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 12:38:09,479 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 185 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:09,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 610 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:09,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2024-11-02 12:38:09,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 3938. [2024-11-02 12:38:09,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3938 states, 3937 states have (on average 1.5013970027940056) internal successors, (5911), 3937 states have internal predecessors, (5911), 0 states have call successors, (0), 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 12:38:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 5911 transitions. [2024-11-02 12:38:09,593 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 5911 transitions. Word has length 128 [2024-11-02 12:38:09,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:09,593 INFO L471 AbstractCegarLoop]: Abstraction has 3938 states and 5911 transitions. [2024-11-02 12:38:09,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 12:38:09,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 5911 transitions. [2024-11-02 12:38:09,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-02 12:38:09,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:09,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:09,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:38:09,599 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:09,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:09,599 INFO L85 PathProgramCache]: Analyzing trace with hash 714613996, now seen corresponding path program 1 times [2024-11-02 12:38:09,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:09,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73003219] [2024-11-02 12:38:09,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:09,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:09,912 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 12:38:09,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:09,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73003219] [2024-11-02 12:38:09,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73003219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:09,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:09,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:38:09,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138240731] [2024-11-02 12:38:09,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:09,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:09,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:09,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:09,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:09,915 INFO L87 Difference]: Start difference. First operand 3938 states and 5911 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 12:38:10,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:10,180 INFO L93 Difference]: Finished difference Result 7764 states and 11684 transitions. [2024-11-02 12:38:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:38:10,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2024-11-02 12:38:10,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:10,193 INFO L225 Difference]: With dead ends: 7764 [2024-11-02 12:38:10,193 INFO L226 Difference]: Without dead ends: 3938 [2024-11-02 12:38:10,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:38:10,198 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 881 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:10,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 260 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:10,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2024-11-02 12:38:10,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3938. [2024-11-02 12:38:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3938 states, 3937 states have (on average 1.4841249682499364) internal successors, (5843), 3937 states have internal predecessors, (5843), 0 states have call successors, (0), 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 12:38:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 5843 transitions. [2024-11-02 12:38:10,293 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 5843 transitions. Word has length 131 [2024-11-02 12:38:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:10,293 INFO L471 AbstractCegarLoop]: Abstraction has 3938 states and 5843 transitions. [2024-11-02 12:38:10,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 12:38:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 5843 transitions. [2024-11-02 12:38:10,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-02 12:38:10,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:10,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:10,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:38:10,296 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:10,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:10,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1412550831, now seen corresponding path program 1 times [2024-11-02 12:38:10,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:10,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011535876] [2024-11-02 12:38:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:10,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:11,573 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 12:38:11,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:11,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011535876] [2024-11-02 12:38:11,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011535876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:11,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:11,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:38:11,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114503965] [2024-11-02 12:38:11,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:11,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:11,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:11,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:11,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:11,579 INFO L87 Difference]: Start difference. First operand 3938 states and 5843 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 12:38:11,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:11,838 INFO L93 Difference]: Finished difference Result 6641 states and 9932 transitions. [2024-11-02 12:38:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:38:11,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2024-11-02 12:38:11,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:11,855 INFO L225 Difference]: With dead ends: 6641 [2024-11-02 12:38:11,856 INFO L226 Difference]: Without dead ends: 4825 [2024-11-02 12:38:11,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:11,862 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 765 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:11,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 853 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:11,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2024-11-02 12:38:11,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 3977. [2024-11-02 12:38:11,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3977 states, 3976 states have (on average 1.4818913480885312) internal successors, (5892), 3976 states have internal predecessors, (5892), 0 states have call successors, (0), 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 12:38:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 5892 transitions. [2024-11-02 12:38:11,967 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 5892 transitions. Word has length 131 [2024-11-02 12:38:11,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:11,967 INFO L471 AbstractCegarLoop]: Abstraction has 3977 states and 5892 transitions. [2024-11-02 12:38:11,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 12:38:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 5892 transitions. [2024-11-02 12:38:11,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-02 12:38:11,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:11,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:11,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:38:11,971 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:38:11,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:11,971 INFO L85 PathProgramCache]: Analyzing trace with hash 512972157, now seen corresponding path program 1 times [2024-11-02 12:38:11,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:11,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568236295] [2024-11-02 12:38:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:11,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat