./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87c0d05d6e0355591807918f29d7510d5603d16064875313848d28b6b97f865e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:25:08,413 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:25:08,554 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:25:08,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:25:08,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:25:08,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:25:08,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:25:08,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:25:08,588 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:25:08,589 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:25:08,589 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:25:08,589 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:25:08,590 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:25:08,590 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:25:08,591 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:25:08,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:25:08,592 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:25:08,592 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:25:08,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:25:08,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:25:08,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:25:08,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:25:08,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:25:08,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:25:08,595 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:25:08,595 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:25:08,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:25:08,596 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:25:08,596 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:25:08,598 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:25:08,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:25:08,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:25:08,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:25:08,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:25:08,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:25:08,600 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:25:08,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:25:08,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:25:08,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:25:08,606 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:25:08,606 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:25:08,607 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:25:08,607 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87c0d05d6e0355591807918f29d7510d5603d16064875313848d28b6b97f865e [2024-11-08 18:25:08,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:25:08,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:25:08,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:25:08,978 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:25:08,978 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:25:08,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c Unable to find full path for "g++" [2024-11-08 18:25:11,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:25:11,396 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:25:11,401 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-08 18:25:11,415 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/data/15eba0451/23c09b74167543dd8304b91064c008a9/FLAG2e07b801e [2024-11-08 18:25:11,713 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/data/15eba0451/23c09b74167543dd8304b91064c008a9 [2024-11-08 18:25:11,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:25:11,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:25:11,719 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:25:11,719 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:25:11,726 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:25:11,727 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:25:11" (1/1) ... [2024-11-08 18:25:11,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec5ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:11, skipping insertion in model container [2024-11-08 18:25:11,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:25:11" (1/1) ... [2024-11-08 18:25:11,776 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:25:12,058 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5337,5350] [2024-11-08 18:25:12,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:25:12,132 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:25:12,180 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5337,5350] [2024-11-08 18:25:12,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:25:12,233 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:25:12,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:12 WrapperNode [2024-11-08 18:25:12,233 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:25:12,234 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:25:12,235 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:25:12,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:25:12,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:12" (1/1) ... [2024-11-08 18:25:12,258 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:12" (1/1) ... [2024-11-08 18:25:12,301 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 470 [2024-11-08 18:25:12,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:25:12,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:25:12,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:25:12,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:25:12,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:12" (1/1) ... [2024-11-08 18:25:12,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:12" (1/1) ... [2024-11-08 18:25:12,321 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:12" (1/1) ... [2024-11-08 18:25:12,363 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 18:25:12,363 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:12" (1/1) ... [2024-11-08 18:25:12,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:12" (1/1) ... [2024-11-08 18:25:12,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:12" (1/1) ... [2024-11-08 18:25:12,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:12" (1/1) ... [2024-11-08 18:25:12,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:12" (1/1) ... [2024-11-08 18:25:12,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:12" (1/1) ... [2024-11-08 18:25:12,403 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:25:12,407 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:25:12,408 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:25:12,408 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:25:12,409 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:12" (1/1) ... [2024-11-08 18:25:12,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:25:12,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:25:12,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:25:12,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:25:12,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:25:12,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:25:12,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:25:12,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:25:12,756 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:25:12,760 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:25:13,422 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-08 18:25:13,423 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:25:13,449 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:25:13,450 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:25:13,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:25:13 BoogieIcfgContainer [2024-11-08 18:25:13,451 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:25:13,458 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:25:13,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:25:13,468 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:25:13,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:25:11" (1/3) ... [2024-11-08 18:25:13,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277fa7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:25:13, skipping insertion in model container [2024-11-08 18:25:13,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:25:12" (2/3) ... [2024-11-08 18:25:13,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277fa7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:25:13, skipping insertion in model container [2024-11-08 18:25:13,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:25:13" (3/3) ... [2024-11-08 18:25:13,474 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2024-11-08 18:25:13,504 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:25:13,504 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:25:13,584 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:25:13,593 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=PETRI_NET, 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;@6cea280, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:25:13,593 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:25:13,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:13,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 18:25:13,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:13,610 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:13,611 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:13,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:13,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1289871298, now seen corresponding path program 1 times [2024-11-08 18:25:13,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:13,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292096744] [2024-11-08 18:25:13,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:13,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:14,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:14,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292096744] [2024-11-08 18:25:14,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292096744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:14,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:14,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:25:14,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021024148] [2024-11-08 18:25:14,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:14,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:25:14,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:14,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:25:14,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:25:14,207 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:14,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:14,280 INFO L93 Difference]: Finished difference Result 260 states and 419 transitions. [2024-11-08 18:25:14,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:25:14,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-08 18:25:14,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:14,303 INFO L225 Difference]: With dead ends: 260 [2024-11-08 18:25:14,303 INFO L226 Difference]: Without dead ends: 171 [2024-11-08 18:25:14,307 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 [2024-11-08 18:25:14,313 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 137 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:14,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 401 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:25:14,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-08 18:25:14,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2024-11-08 18:25:14,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.505952380952381) internal successors, (253), 168 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 253 transitions. [2024-11-08 18:25:14,407 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 253 transitions. Word has length 48 [2024-11-08 18:25:14,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:14,408 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 253 transitions. [2024-11-08 18:25:14,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:14,408 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 253 transitions. [2024-11-08 18:25:14,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 18:25:14,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:14,410 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:14,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:25:14,411 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:14,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:14,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1971653998, now seen corresponding path program 1 times [2024-11-08 18:25:14,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:14,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850715413] [2024-11-08 18:25:14,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:14,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:14,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:14,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850715413] [2024-11-08 18:25:14,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850715413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:14,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:14,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:25:14,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861933893] [2024-11-08 18:25:14,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:14,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:25:14,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:14,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:25:14,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:25:14,697 INFO L87 Difference]: Start difference. First operand 169 states and 253 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:14,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:14,768 INFO L93 Difference]: Finished difference Result 421 states and 653 transitions. [2024-11-08 18:25:14,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:25:14,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 18:25:14,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:14,771 INFO L225 Difference]: With dead ends: 421 [2024-11-08 18:25:14,776 INFO L226 Difference]: Without dead ends: 279 [2024-11-08 18:25:14,777 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 [2024-11-08 18:25:14,780 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 110 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:14,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 348 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:25:14,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-08 18:25:14,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2024-11-08 18:25:14,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.536231884057971) internal successors, (424), 276 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:14,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 424 transitions. [2024-11-08 18:25:14,806 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 424 transitions. Word has length 49 [2024-11-08 18:25:14,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:14,806 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 424 transitions. [2024-11-08 18:25:14,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:14,807 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 424 transitions. [2024-11-08 18:25:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-08 18:25:14,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:14,809 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:14,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:25:14,810 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:14,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:14,811 INFO L85 PathProgramCache]: Analyzing trace with hash 663495285, now seen corresponding path program 1 times [2024-11-08 18:25:14,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:14,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646134803] [2024-11-08 18:25:14,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:14,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:14,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:14,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646134803] [2024-11-08 18:25:14,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646134803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:14,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:14,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:25:14,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370135766] [2024-11-08 18:25:14,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:14,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:25:14,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:14,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:25:14,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:25:14,957 INFO L87 Difference]: Start difference. First operand 277 states and 424 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:14,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:14,994 INFO L93 Difference]: Finished difference Result 713 states and 1114 transitions. [2024-11-08 18:25:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:25:14,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-08 18:25:14,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:14,998 INFO L225 Difference]: With dead ends: 713 [2024-11-08 18:25:14,998 INFO L226 Difference]: Without dead ends: 463 [2024-11-08 18:25:15,000 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 [2024-11-08 18:25:15,001 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 105 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:15,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 333 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:25:15,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-08 18:25:15,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 461. [2024-11-08 18:25:15,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.5478260869565217) internal successors, (712), 460 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 712 transitions. [2024-11-08 18:25:15,030 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 712 transitions. Word has length 50 [2024-11-08 18:25:15,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:15,031 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 712 transitions. [2024-11-08 18:25:15,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:15,031 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 712 transitions. [2024-11-08 18:25:15,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 18:25:15,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:15,033 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] [2024-11-08 18:25:15,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:25:15,034 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:15,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:15,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1706895887, now seen corresponding path program 1 times [2024-11-08 18:25:15,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:15,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297509436] [2024-11-08 18:25:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:15,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:15,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:15,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297509436] [2024-11-08 18:25:15,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297509436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:15,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:15,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:25:15,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742069850] [2024-11-08 18:25:15,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:15,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:25:15,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:15,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:25:15,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:25:15,198 INFO L87 Difference]: Start difference. First operand 461 states and 712 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:15,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:15,241 INFO L93 Difference]: Finished difference Result 1201 states and 1874 transitions. [2024-11-08 18:25:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:25:15,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-08 18:25:15,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:15,250 INFO L225 Difference]: With dead ends: 1201 [2024-11-08 18:25:15,251 INFO L226 Difference]: Without dead ends: 767 [2024-11-08 18:25:15,253 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 [2024-11-08 18:25:15,258 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 100 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:15,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 318 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:25:15,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2024-11-08 18:25:15,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 765. [2024-11-08 18:25:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 1.544502617801047) internal successors, (1180), 764 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:15,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1180 transitions. [2024-11-08 18:25:15,327 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1180 transitions. Word has length 51 [2024-11-08 18:25:15,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:15,328 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 1180 transitions. [2024-11-08 18:25:15,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1180 transitions. [2024-11-08 18:25:15,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-08 18:25:15,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:15,333 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:15,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:25:15,334 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:15,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:15,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1133800764, now seen corresponding path program 1 times [2024-11-08 18:25:15,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:15,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672599856] [2024-11-08 18:25:15,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:15,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:15,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:15,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672599856] [2024-11-08 18:25:15,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672599856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:15,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:15,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:25:15,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586645004] [2024-11-08 18:25:15,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:15,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:25:15,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:15,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:25:15,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:25:15,605 INFO L87 Difference]: Start difference. First operand 765 states and 1180 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:15,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:15,784 INFO L93 Difference]: Finished difference Result 4455 states and 6945 transitions. [2024-11-08 18:25:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:25:15,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-08 18:25:15,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:15,799 INFO L225 Difference]: With dead ends: 4455 [2024-11-08 18:25:15,799 INFO L226 Difference]: Without dead ends: 3717 [2024-11-08 18:25:15,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:25:15,803 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 904 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:15,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 1080 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:15,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3717 states. [2024-11-08 18:25:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3717 to 1501. [2024-11-08 18:25:15,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1500 states have (on average 1.5333333333333334) internal successors, (2300), 1500 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:15,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2300 transitions. [2024-11-08 18:25:15,866 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2300 transitions. Word has length 52 [2024-11-08 18:25:15,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:15,867 INFO L471 AbstractCegarLoop]: Abstraction has 1501 states and 2300 transitions. [2024-11-08 18:25:15,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:15,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2300 transitions. [2024-11-08 18:25:15,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 18:25:15,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:15,869 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] [2024-11-08 18:25:15,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:25:15,869 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:15,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash 768629036, now seen corresponding path program 1 times [2024-11-08 18:25:15,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:15,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730540520] [2024-11-08 18:25:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:16,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:16,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730540520] [2024-11-08 18:25:16,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730540520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:16,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:16,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:25:16,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180738620] [2024-11-08 18:25:16,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:16,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:25:16,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:16,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:25:16,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:25:16,109 INFO L87 Difference]: Start difference. First operand 1501 states and 2300 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:16,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:16,244 INFO L93 Difference]: Finished difference Result 6501 states and 9920 transitions. [2024-11-08 18:25:16,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:25:16,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-08 18:25:16,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:16,261 INFO L225 Difference]: With dead ends: 6501 [2024-11-08 18:25:16,261 INFO L226 Difference]: Without dead ends: 5027 [2024-11-08 18:25:16,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:25:16,265 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 496 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:16,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 578 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:16,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2024-11-08 18:25:16,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 5021. [2024-11-08 18:25:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 5020 states have (on average 1.5163346613545816) internal successors, (7612), 5020 states have internal predecessors, (7612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:16,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 7612 transitions. [2024-11-08 18:25:16,385 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 7612 transitions. Word has length 53 [2024-11-08 18:25:16,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:16,385 INFO L471 AbstractCegarLoop]: Abstraction has 5021 states and 7612 transitions. [2024-11-08 18:25:16,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:16,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 7612 transitions. [2024-11-08 18:25:16,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-08 18:25:16,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:16,391 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:16,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:25:16,391 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:16,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:16,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1792030237, now seen corresponding path program 1 times [2024-11-08 18:25:16,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:16,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109530665] [2024-11-08 18:25:16,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:16,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:16,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:16,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109530665] [2024-11-08 18:25:16,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109530665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:16,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:16,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:25:16,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498111991] [2024-11-08 18:25:16,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:16,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:25:16,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:16,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:25:16,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:25:16,635 INFO L87 Difference]: Start difference. First operand 5021 states and 7612 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:16,953 INFO L93 Difference]: Finished difference Result 13905 states and 21118 transitions. [2024-11-08 18:25:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:25:16,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-08 18:25:16,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:16,987 INFO L225 Difference]: With dead ends: 13905 [2024-11-08 18:25:16,987 INFO L226 Difference]: Without dead ends: 8911 [2024-11-08 18:25:16,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:25:16,998 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 668 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:16,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 171 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:25:17,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8911 states. [2024-11-08 18:25:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8911 to 8909. [2024-11-08 18:25:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8909 states, 8908 states have (on average 1.5065110013471037) internal successors, (13420), 8908 states have internal predecessors, (13420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8909 states to 8909 states and 13420 transitions. [2024-11-08 18:25:17,277 INFO L78 Accepts]: Start accepts. Automaton has 8909 states and 13420 transitions. Word has length 55 [2024-11-08 18:25:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:17,278 INFO L471 AbstractCegarLoop]: Abstraction has 8909 states and 13420 transitions. [2024-11-08 18:25:17,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 8909 states and 13420 transitions. [2024-11-08 18:25:17,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-08 18:25:17,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:17,281 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:17,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:25:17,282 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:17,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:17,283 INFO L85 PathProgramCache]: Analyzing trace with hash -22058530, now seen corresponding path program 1 times [2024-11-08 18:25:17,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:17,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963618454] [2024-11-08 18:25:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:17,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:17,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:17,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963618454] [2024-11-08 18:25:17,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963618454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:17,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:17,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:25:17,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591031390] [2024-11-08 18:25:17,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:17,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:25:17,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:17,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:25:17,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:25:17,765 INFO L87 Difference]: Start difference. First operand 8909 states and 13420 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:17,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:17,858 INFO L93 Difference]: Finished difference Result 9359 states and 14093 transitions. [2024-11-08 18:25:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:25:17,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-08 18:25:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:17,908 INFO L225 Difference]: With dead ends: 9359 [2024-11-08 18:25:17,908 INFO L226 Difference]: Without dead ends: 9357 [2024-11-08 18:25:17,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:25:17,917 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 0 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:17,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 593 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:25:17,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9357 states. [2024-11-08 18:25:18,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9357 to 9357. [2024-11-08 18:25:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9357 states, 9356 states have (on average 1.4822573749465584) internal successors, (13868), 9356 states have internal predecessors, (13868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9357 states to 9357 states and 13868 transitions. [2024-11-08 18:25:18,211 INFO L78 Accepts]: Start accepts. Automaton has 9357 states and 13868 transitions. Word has length 55 [2024-11-08 18:25:18,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:18,211 INFO L471 AbstractCegarLoop]: Abstraction has 9357 states and 13868 transitions. [2024-11-08 18:25:18,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:18,212 INFO L276 IsEmpty]: Start isEmpty. Operand 9357 states and 13868 transitions. [2024-11-08 18:25:18,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 18:25:18,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:18,213 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] [2024-11-08 18:25:18,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:25:18,213 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:18,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:18,214 INFO L85 PathProgramCache]: Analyzing trace with hash -673241382, now seen corresponding path program 1 times [2024-11-08 18:25:18,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:18,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341708756] [2024-11-08 18:25:18,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:18,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:18,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:18,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341708756] [2024-11-08 18:25:18,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341708756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:18,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:18,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:25:18,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820114830] [2024-11-08 18:25:18,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:18,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:25:18,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:18,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:25:18,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:25:18,339 INFO L87 Difference]: Start difference. First operand 9357 states and 13868 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:18,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:18,439 INFO L93 Difference]: Finished difference Result 21051 states and 31132 transitions. [2024-11-08 18:25:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:25:18,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-08 18:25:18,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:18,466 INFO L225 Difference]: With dead ends: 21051 [2024-11-08 18:25:18,466 INFO L226 Difference]: Without dead ends: 11721 [2024-11-08 18:25:18,478 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 [2024-11-08 18:25:18,478 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 88 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:18,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 309 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:25:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11721 states. [2024-11-08 18:25:18,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11721 to 11719. [2024-11-08 18:25:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11719 states, 11718 states have (on average 1.4707287933094384) internal successors, (17234), 11718 states have internal predecessors, (17234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:18,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11719 states to 11719 states and 17234 transitions. [2024-11-08 18:25:18,761 INFO L78 Accepts]: Start accepts. Automaton has 11719 states and 17234 transitions. Word has length 56 [2024-11-08 18:25:18,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:18,761 INFO L471 AbstractCegarLoop]: Abstraction has 11719 states and 17234 transitions. [2024-11-08 18:25:18,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:18,762 INFO L276 IsEmpty]: Start isEmpty. Operand 11719 states and 17234 transitions. [2024-11-08 18:25:18,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 18:25:18,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:18,767 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:18,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:25:18,768 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:18,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:18,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1821600213, now seen corresponding path program 1 times [2024-11-08 18:25:18,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:18,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47360971] [2024-11-08 18:25:18,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:18,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:25:19,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:19,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47360971] [2024-11-08 18:25:19,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47360971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:25:19,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765203818] [2024-11-08 18:25:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:19,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:25:19,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:25:19,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:25:19,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:25:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:19,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 18:25:19,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:25:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:20,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:25:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:21,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765203818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:25:21,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:25:21,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 7] total 15 [2024-11-08 18:25:21,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849786174] [2024-11-08 18:25:21,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:25:21,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:25:21,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:21,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:25:21,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:25:21,157 INFO L87 Difference]: Start difference. First operand 11719 states and 17234 transitions. Second operand has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:22,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:22,257 INFO L93 Difference]: Finished difference Result 60360 states and 89240 transitions. [2024-11-08 18:25:22,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 18:25:22,258 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 0 states have call successors, (0), 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 77 [2024-11-08 18:25:22,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:22,357 INFO L225 Difference]: With dead ends: 60360 [2024-11-08 18:25:22,358 INFO L226 Difference]: Without dead ends: 48670 [2024-11-08 18:25:22,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2024-11-08 18:25:22,376 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 3344 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3344 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:22,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3344 Valid, 1518 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:25:22,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48670 states. [2024-11-08 18:25:23,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48670 to 42122. [2024-11-08 18:25:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42122 states, 42121 states have (on average 1.4642577336720402) internal successors, (61676), 42121 states have internal predecessors, (61676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:23,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42122 states to 42122 states and 61676 transitions. [2024-11-08 18:25:23,339 INFO L78 Accepts]: Start accepts. Automaton has 42122 states and 61676 transitions. Word has length 77 [2024-11-08 18:25:23,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:23,339 INFO L471 AbstractCegarLoop]: Abstraction has 42122 states and 61676 transitions. [2024-11-08 18:25:23,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:23,340 INFO L276 IsEmpty]: Start isEmpty. Operand 42122 states and 61676 transitions. [2024-11-08 18:25:23,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 18:25:23,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:23,344 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:23,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:25:23,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b444cc8-615a-4e49-a771-c110b164371c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 18:25:23,551 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:23,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:23,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1365606455, now seen corresponding path program 1 times [2024-11-08 18:25:23,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:23,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725212967] [2024-11-08 18:25:23,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:23,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:23,654 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:23,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:23,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725212967] [2024-11-08 18:25:23,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725212967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:23,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:23,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:25:23,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605793435] [2024-11-08 18:25:23,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:23,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:25:23,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:23,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:25:23,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:25:23,657 INFO L87 Difference]: Start difference. First operand 42122 states and 61676 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:24,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:24,305 INFO L93 Difference]: Finished difference Result 104841 states and 153091 transitions. [2024-11-08 18:25:24,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:25:24,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-08 18:25:24,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:24,588 INFO L225 Difference]: With dead ends: 104841 [2024-11-08 18:25:24,588 INFO L226 Difference]: Without dead ends: 67788 [2024-11-08 18:25:24,619 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 [2024-11-08 18:25:24,620 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 90 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:24,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 311 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:25:24,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67788 states. [2024-11-08 18:25:25,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67788 to 65442. [2024-11-08 18:25:25,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65442 states, 65441 states have (on average 1.4471814306016106) internal successors, (94705), 65441 states have internal predecessors, (94705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65442 states to 65442 states and 94705 transitions. [2024-11-08 18:25:26,202 INFO L78 Accepts]: Start accepts. Automaton has 65442 states and 94705 transitions. Word has length 78 [2024-11-08 18:25:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:26,202 INFO L471 AbstractCegarLoop]: Abstraction has 65442 states and 94705 transitions. [2024-11-08 18:25:26,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:26,203 INFO L276 IsEmpty]: Start isEmpty. Operand 65442 states and 94705 transitions. [2024-11-08 18:25:26,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 18:25:26,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:26,208 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:26,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 18:25:26,209 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:26,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1977851660, now seen corresponding path program 1 times [2024-11-08 18:25:26,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:26,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042556025] [2024-11-08 18:25:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:26,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:26,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:26,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042556025] [2024-11-08 18:25:26,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042556025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:26,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:26,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:25:26,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551415212] [2024-11-08 18:25:26,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:26,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:25:26,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:26,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:25:26,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:25:26,357 INFO L87 Difference]: Start difference. First operand 65442 states and 94705 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:27,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:27,192 INFO L93 Difference]: Finished difference Result 142164 states and 204649 transitions. [2024-11-08 18:25:27,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:25:27,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-08 18:25:27,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:27,463 INFO L225 Difference]: With dead ends: 142164 [2024-11-08 18:25:27,464 INFO L226 Difference]: Without dead ends: 94485 [2024-11-08 18:25:27,523 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 [2024-11-08 18:25:27,525 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 91 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:27,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 330 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:25:27,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94485 states. [2024-11-08 18:25:28,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94485 to 90263. [2024-11-08 18:25:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90263 states, 90262 states have (on average 1.426790897609182) internal successors, (128785), 90262 states have internal predecessors, (128785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90263 states to 90263 states and 128785 transitions. [2024-11-08 18:25:29,368 INFO L78 Accepts]: Start accepts. Automaton has 90263 states and 128785 transitions. Word has length 78 [2024-11-08 18:25:29,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:29,369 INFO L471 AbstractCegarLoop]: Abstraction has 90263 states and 128785 transitions. [2024-11-08 18:25:29,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:29,370 INFO L276 IsEmpty]: Start isEmpty. Operand 90263 states and 128785 transitions. [2024-11-08 18:25:29,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 18:25:29,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:29,376 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:29,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 18:25:29,377 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:29,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:29,377 INFO L85 PathProgramCache]: Analyzing trace with hash 440432859, now seen corresponding path program 1 times [2024-11-08 18:25:29,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:29,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199750515] [2024-11-08 18:25:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:29,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:29,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:29,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199750515] [2024-11-08 18:25:29,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199750515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:29,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:29,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:25:29,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365112825] [2024-11-08 18:25:29,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:29,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:25:29,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:29,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:25:29,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:25:29,556 INFO L87 Difference]: Start difference. First operand 90263 states and 128785 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:30,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:30,328 INFO L93 Difference]: Finished difference Result 150744 states and 213577 transitions. [2024-11-08 18:25:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:25:30,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-08 18:25:30,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:30,505 INFO L225 Difference]: With dead ends: 150744 [2024-11-08 18:25:30,505 INFO L226 Difference]: Without dead ends: 94100 [2024-11-08 18:25:30,542 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 [2024-11-08 18:25:30,544 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 92 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:30,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 349 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:25:30,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94100 states. [2024-11-08 18:25:31,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94100 to 89272. [2024-11-08 18:25:31,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89272 states, 89271 states have (on average 1.4047114964546157) internal successors, (125400), 89271 states have internal predecessors, (125400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89272 states to 89272 states and 125400 transitions. [2024-11-08 18:25:32,062 INFO L78 Accepts]: Start accepts. Automaton has 89272 states and 125400 transitions. Word has length 78 [2024-11-08 18:25:32,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:32,062 INFO L471 AbstractCegarLoop]: Abstraction has 89272 states and 125400 transitions. [2024-11-08 18:25:32,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:32,062 INFO L276 IsEmpty]: Start isEmpty. Operand 89272 states and 125400 transitions. [2024-11-08 18:25:32,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 18:25:32,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:32,070 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:32,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 18:25:32,070 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:32,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:32,071 INFO L85 PathProgramCache]: Analyzing trace with hash -739881820, now seen corresponding path program 1 times [2024-11-08 18:25:32,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:32,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901504578] [2024-11-08 18:25:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:32,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:32,268 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:25:32,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:32,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901504578] [2024-11-08 18:25:32,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901504578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:32,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:32,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:25:32,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525921516] [2024-11-08 18:25:32,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:32,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:25:32,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:32,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:25:32,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:25:32,271 INFO L87 Difference]: Start difference. First operand 89272 states and 125400 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:33,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:33,341 INFO L93 Difference]: Finished difference Result 225251 states and 319319 transitions. [2024-11-08 18:25:33,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:25:33,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-08 18:25:33,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:33,573 INFO L225 Difference]: With dead ends: 225251 [2024-11-08 18:25:33,573 INFO L226 Difference]: Without dead ends: 182891 [2024-11-08 18:25:33,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:25:33,641 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 793 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:33,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1033 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:33,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182891 states. [2024-11-08 18:25:36,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182891 to 125114. [2024-11-08 18:25:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125114 states, 125113 states have (on average 1.4001742424847938) internal successors, (175180), 125113 states have internal predecessors, (175180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:36,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125114 states to 125114 states and 175180 transitions. [2024-11-08 18:25:36,365 INFO L78 Accepts]: Start accepts. Automaton has 125114 states and 175180 transitions. Word has length 78 [2024-11-08 18:25:36,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:36,365 INFO L471 AbstractCegarLoop]: Abstraction has 125114 states and 175180 transitions. [2024-11-08 18:25:36,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:36,365 INFO L276 IsEmpty]: Start isEmpty. Operand 125114 states and 175180 transitions. [2024-11-08 18:25:36,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 18:25:36,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:36,373 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:36,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 18:25:36,373 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:36,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:36,374 INFO L85 PathProgramCache]: Analyzing trace with hash -542796544, now seen corresponding path program 1 times [2024-11-08 18:25:36,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:36,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942898862] [2024-11-08 18:25:36,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:36,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:25:36,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:36,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942898862] [2024-11-08 18:25:36,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942898862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:36,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:36,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:25:36,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890851101] [2024-11-08 18:25:36,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:36,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:25:36,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:36,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:25:36,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:25:36,628 INFO L87 Difference]: Start difference. First operand 125114 states and 175180 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:38,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:38,033 INFO L93 Difference]: Finished difference Result 260614 states and 368755 transitions. [2024-11-08 18:25:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:25:38,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-08 18:25:38,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:38,344 INFO L225 Difference]: With dead ends: 260614 [2024-11-08 18:25:38,345 INFO L226 Difference]: Without dead ends: 219613 [2024-11-08 18:25:38,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:25:38,407 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 793 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:38,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1010 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:38,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219613 states. [2024-11-08 18:25:41,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219613 to 163915. [2024-11-08 18:25:41,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163915 states, 163914 states have (on average 1.3993069536464244) internal successors, (229366), 163914 states have internal predecessors, (229366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:41,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163915 states to 163915 states and 229366 transitions. [2024-11-08 18:25:41,364 INFO L78 Accepts]: Start accepts. Automaton has 163915 states and 229366 transitions. Word has length 78 [2024-11-08 18:25:41,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:41,364 INFO L471 AbstractCegarLoop]: Abstraction has 163915 states and 229366 transitions. [2024-11-08 18:25:41,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:41,364 INFO L276 IsEmpty]: Start isEmpty. Operand 163915 states and 229366 transitions. [2024-11-08 18:25:41,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 18:25:41,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:41,882 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:41,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 18:25:41,882 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:41,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:41,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1309904988, now seen corresponding path program 1 times [2024-11-08 18:25:41,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:41,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203559342] [2024-11-08 18:25:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:41,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:25:42,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:42,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203559342] [2024-11-08 18:25:42,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203559342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:42,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:42,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:25:42,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448530592] [2024-11-08 18:25:42,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:42,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:25:42,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:42,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:25:42,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:25:42,346 INFO L87 Difference]: Start difference. First operand 163915 states and 229366 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:43,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:43,454 INFO L93 Difference]: Finished difference Result 275825 states and 389458 transitions. [2024-11-08 18:25:43,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:25:43,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-08 18:25:43,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:43,849 INFO L225 Difference]: With dead ends: 275825 [2024-11-08 18:25:43,849 INFO L226 Difference]: Without dead ends: 252943 [2024-11-08 18:25:43,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:25:43,926 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 767 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:43,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1043 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:44,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252943 states. [2024-11-08 18:25:46,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252943 to 186129. [2024-11-08 18:25:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186129 states, 186128 states have (on average 1.3996926846041433) internal successors, (260522), 186128 states have internal predecessors, (260522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186129 states to 186129 states and 260522 transitions. [2024-11-08 18:25:47,907 INFO L78 Accepts]: Start accepts. Automaton has 186129 states and 260522 transitions. Word has length 78 [2024-11-08 18:25:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:47,908 INFO L471 AbstractCegarLoop]: Abstraction has 186129 states and 260522 transitions. [2024-11-08 18:25:47,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 186129 states and 260522 transitions. [2024-11-08 18:25:47,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 18:25:47,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:47,926 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:47,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 18:25:47,927 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:47,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:47,927 INFO L85 PathProgramCache]: Analyzing trace with hash 839835956, now seen corresponding path program 1 times [2024-11-08 18:25:47,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:47,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089452236] [2024-11-08 18:25:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:47,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:25:48,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:48,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089452236] [2024-11-08 18:25:48,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089452236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:48,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:48,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:25:48,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094797939] [2024-11-08 18:25:48,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:48,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:25:48,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:48,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:25:48,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:25:48,138 INFO L87 Difference]: Start difference. First operand 186129 states and 260522 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:49,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:49,080 INFO L93 Difference]: Finished difference Result 308871 states and 436119 transitions. [2024-11-08 18:25:49,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:25:49,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-08 18:25:49,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:49,443 INFO L225 Difference]: With dead ends: 308871 [2024-11-08 18:25:49,443 INFO L226 Difference]: Without dead ends: 274642 [2024-11-08 18:25:50,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:25:50,366 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 731 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:50,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1115 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:25:50,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274642 states. [2024-11-08 18:25:53,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274642 to 213970. [2024-11-08 18:25:53,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213970 states, 213969 states have (on average 1.4004645532764093) internal successors, (299656), 213969 states have internal predecessors, (299656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:54,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213970 states to 213970 states and 299656 transitions. [2024-11-08 18:25:54,299 INFO L78 Accepts]: Start accepts. Automaton has 213970 states and 299656 transitions. Word has length 78 [2024-11-08 18:25:54,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:25:54,299 INFO L471 AbstractCegarLoop]: Abstraction has 213970 states and 299656 transitions. [2024-11-08 18:25:54,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:54,300 INFO L276 IsEmpty]: Start isEmpty. Operand 213970 states and 299656 transitions. [2024-11-08 18:25:54,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-08 18:25:54,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:25:54,309 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:25:54,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 18:25:54,310 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:25:54,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:25:54,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1258059313, now seen corresponding path program 1 times [2024-11-08 18:25:54,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:25:54,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143920799] [2024-11-08 18:25:54,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:25:54,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:25:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:25:54,398 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:25:54,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:25:54,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143920799] [2024-11-08 18:25:54,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143920799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:25:54,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:25:54,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:25:54,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327056161] [2024-11-08 18:25:54,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:25:54,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:25:54,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:25:54,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:25:54,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:25:54,402 INFO L87 Difference]: Start difference. First operand 213970 states and 299656 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:25:56,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:25:56,638 INFO L93 Difference]: Finished difference Result 481945 states and 672664 transitions. [2024-11-08 18:25:56,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:25:56,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2024-11-08 18:25:56,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:25:57,024 INFO L225 Difference]: With dead ends: 481945 [2024-11-08 18:25:57,024 INFO L226 Difference]: Without dead ends: 275537 [2024-11-08 18:25:57,130 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 [2024-11-08 18:25:57,130 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 87 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:25:57,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 329 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:25:57,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275537 states.