./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/bin/uautomizer-verify-4GaUIPS5ZU --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 4086756fe326e2f90904c763827ae3d38d44a78a9eb1422e3198b9e38a459658 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:16:44,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:16:44,590 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:16:44,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:16:44,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:16:44,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:16:44,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:16:44,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:16:44,637 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:16:44,638 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:16:44,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:16:44,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:16:44,640 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:16:44,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:16:44,643 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:16:44,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:16:44,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:16:44,644 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:16:44,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:16:44,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:16:44,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:16:44,646 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:16:44,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:16:44,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:16:44,647 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:16:44,647 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:16:44,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:16:44,647 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:16:44,648 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:16:44,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:16:44,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:16:44,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:16:44,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:16:44,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:16:44,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:16:44,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:16:44,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:16:44,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:16:44,654 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:16:44,654 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:16:44,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:16:44,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:16:44,657 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_656907a6-6dba-4ce8-8143-73a1bf4befb2/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4086756fe326e2f90904c763827ae3d38d44a78a9eb1422e3198b9e38a459658 [2024-10-31 22:16:44,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:16:44,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:16:44,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:16:44,971 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:16:44,971 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:16:44,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c Unable to find full path for "g++" [2024-10-31 22:16:47,318 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:16:47,569 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:16:47,572 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-31 22:16:47,591 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/bin/uautomizer-verify-4GaUIPS5ZU/data/104edcb19/a3b61ad1c83f413683718907937ee83c/FLAG511ba53fd [2024-10-31 22:16:47,621 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/bin/uautomizer-verify-4GaUIPS5ZU/data/104edcb19/a3b61ad1c83f413683718907937ee83c [2024-10-31 22:16:47,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:16:47,628 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:16:47,629 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:16:47,629 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:16:47,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:16:47,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:16:47" (1/1) ... [2024-10-31 22:16:47,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1183a167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:47, skipping insertion in model container [2024-10-31 22:16:47,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:16:47" (1/1) ... [2024-10-31 22:16:47,694 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:16:48,035 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7920,7933] [2024-10-31 22:16:48,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:16:48,130 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:16:48,183 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7920,7933] [2024-10-31 22:16:48,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:16:48,236 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:16:48,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:48 WrapperNode [2024-10-31 22:16:48,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:16:48,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:16:48,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:16:48,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:16:48,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:48" (1/1) ... [2024-10-31 22:16:48,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:48" (1/1) ... [2024-10-31 22:16:48,322 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 688 [2024-10-31 22:16:48,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:16:48,323 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:16:48,323 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:16:48,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:16:48,334 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:48" (1/1) ... [2024-10-31 22:16:48,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:48" (1/1) ... [2024-10-31 22:16:48,339 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:48" (1/1) ... [2024-10-31 22:16:48,363 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]. [2024-10-31 22:16:48,363 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:48" (1/1) ... [2024-10-31 22:16:48,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:48" (1/1) ... [2024-10-31 22:16:48,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:48" (1/1) ... [2024-10-31 22:16:48,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:48" (1/1) ... [2024-10-31 22:16:48,387 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:48" (1/1) ... [2024-10-31 22:16:48,390 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:48" (1/1) ... [2024-10-31 22:16:48,396 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:16:48,397 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:16:48,398 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:16:48,398 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:16:48,399 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:48" (1/1) ... [2024-10-31 22:16:48,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:16:48,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:16:48,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:16:48,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_656907a6-6dba-4ce8-8143-73a1bf4befb2/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:16:48,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:16:48,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:16:48,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:16:48,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:16:48,624 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:16:48,626 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:16:49,571 INFO L? ?]: Removed 50 outVars from TransFormulas that were not future-live. [2024-10-31 22:16:49,571 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:16:49,594 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:16:49,594 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:16:49,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:16:49 BoogieIcfgContainer [2024-10-31 22:16:49,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:16:49,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:16:49,600 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:16:49,605 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:16:49,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:16:47" (1/3) ... [2024-10-31 22:16:49,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1020324e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:16:49, skipping insertion in model container [2024-10-31 22:16:49,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:48" (2/3) ... [2024-10-31 22:16:49,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1020324e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:16:49, skipping insertion in model container [2024-10-31 22:16:49,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:16:49" (3/3) ... [2024-10-31 22:16:49,608 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-31 22:16:49,623 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:16:49,623 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:16:49,709 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:16:49,716 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;@7c6c099f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:16:49,717 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:16:49,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 154 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-31 22:16:49,736 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:49,737 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:49,738 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:49,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:49,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1975649421, now seen corresponding path program 1 times [2024-10-31 22:16:49,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:49,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832773782] [2024-10-31 22:16:49,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:49,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:50,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:50,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832773782] [2024-10-31 22:16:50,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832773782] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:50,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:50,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:16:50,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349165758] [2024-10-31 22:16:50,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:50,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:50,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:50,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:50,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:16:50,518 INFO L87 Difference]: Start difference. First operand has 155 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 154 states have internal predecessors, (267), 0 states have call successors, (0), 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 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:50,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:50,656 INFO L93 Difference]: Finished difference Result 341 states and 571 transitions. [2024-10-31 22:16:50,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:50,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-31 22:16:50,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:50,673 INFO L225 Difference]: With dead ends: 341 [2024-10-31 22:16:50,674 INFO L226 Difference]: Without dead ends: 237 [2024-10-31 22:16:50,677 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 [2024-10-31 22:16:50,681 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 157 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:50,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 460 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:16:50,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-10-31 22:16:50,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 234. [2024-10-31 22:16:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5665236051502145) internal successors, (365), 233 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 365 transitions. [2024-10-31 22:16:50,738 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 365 transitions. Word has length 62 [2024-10-31 22:16:50,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:50,739 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 365 transitions. [2024-10-31 22:16:50,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:50,739 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 365 transitions. [2024-10-31 22:16:50,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-31 22:16:50,741 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:50,742 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:50,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:16:50,742 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:50,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:50,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1826541876, now seen corresponding path program 1 times [2024-10-31 22:16:50,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:50,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084727363] [2024-10-31 22:16:50,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:50,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:50,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:50,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084727363] [2024-10-31 22:16:51,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084727363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:51,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:51,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:16:51,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777689451] [2024-10-31 22:16:51,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:51,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:51,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:51,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:51,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:16:51,005 INFO L87 Difference]: Start difference. First operand 234 states and 365 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:51,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:51,099 INFO L93 Difference]: Finished difference Result 572 states and 917 transitions. [2024-10-31 22:16:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:51,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-31 22:16:51,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:51,107 INFO L225 Difference]: With dead ends: 572 [2024-10-31 22:16:51,107 INFO L226 Difference]: Without dead ends: 395 [2024-10-31 22:16:51,108 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 [2024-10-31 22:16:51,110 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 133 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:51,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 430 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:16:51,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-10-31 22:16:51,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2024-10-31 22:16:51,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.5897435897435896) internal successors, (620), 390 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:51,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 620 transitions. [2024-10-31 22:16:51,160 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 620 transitions. Word has length 64 [2024-10-31 22:16:51,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:51,160 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 620 transitions. [2024-10-31 22:16:51,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:51,161 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 620 transitions. [2024-10-31 22:16:51,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-31 22:16:51,166 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:51,166 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:51,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:16:51,166 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:51,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:51,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1385775307, now seen corresponding path program 1 times [2024-10-31 22:16:51,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:51,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99371327] [2024-10-31 22:16:51,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:51,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:51,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:51,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99371327] [2024-10-31 22:16:51,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99371327] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:51,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:51,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:16:51,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478758335] [2024-10-31 22:16:51,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:51,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:51,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:51,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:51,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:16:51,471 INFO L87 Difference]: Start difference. First operand 391 states and 620 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:51,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:51,540 INFO L93 Difference]: Finished difference Result 1027 states and 1654 transitions. [2024-10-31 22:16:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:51,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-31 22:16:51,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:51,545 INFO L225 Difference]: With dead ends: 1027 [2024-10-31 22:16:51,546 INFO L226 Difference]: Without dead ends: 693 [2024-10-31 22:16:51,547 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 [2024-10-31 22:16:51,549 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 127 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:51,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 431 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:16:51,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-10-31 22:16:51,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 687. [2024-10-31 22:16:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 1.597667638483965) internal successors, (1096), 686 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1096 transitions. [2024-10-31 22:16:51,583 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1096 transitions. Word has length 66 [2024-10-31 22:16:51,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:51,584 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 1096 transitions. [2024-10-31 22:16:51,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:51,585 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1096 transitions. [2024-10-31 22:16:51,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-31 22:16:51,587 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:51,587 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:51,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:16:51,588 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:51,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:51,589 INFO L85 PathProgramCache]: Analyzing trace with hash -190660810, now seen corresponding path program 1 times [2024-10-31 22:16:51,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:51,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028379668] [2024-10-31 22:16:51,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:51,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:51,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:51,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028379668] [2024-10-31 22:16:51,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028379668] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:51,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:51,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:16:51,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391380950] [2024-10-31 22:16:51,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:51,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:51,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:51,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:51,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:51,829 INFO L87 Difference]: Start difference. First operand 687 states and 1096 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:52,106 INFO L93 Difference]: Finished difference Result 2979 states and 4854 transitions. [2024-10-31 22:16:52,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:16:52,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-10-31 22:16:52,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:52,117 INFO L225 Difference]: With dead ends: 2979 [2024-10-31 22:16:52,117 INFO L226 Difference]: Without dead ends: 2349 [2024-10-31 22:16:52,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:16:52,122 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 1026 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:52,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1596 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:16:52,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2024-10-31 22:16:52,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 1239. [2024-10-31 22:16:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1238 states have (on average 1.6082390953150243) internal successors, (1991), 1238 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:52,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1991 transitions. [2024-10-31 22:16:52,177 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1991 transitions. Word has length 68 [2024-10-31 22:16:52,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:52,180 INFO L471 AbstractCegarLoop]: Abstraction has 1239 states and 1991 transitions. [2024-10-31 22:16:52,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:52,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1991 transitions. [2024-10-31 22:16:52,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-31 22:16:52,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:52,183 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:52,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:16:52,184 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:52,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:52,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1678021987, now seen corresponding path program 1 times [2024-10-31 22:16:52,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:52,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624415935] [2024-10-31 22:16:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:52,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:52,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:52,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:52,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624415935] [2024-10-31 22:16:52,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624415935] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:52,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:52,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:16:52,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226699218] [2024-10-31 22:16:52,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:52,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:16:52,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:52,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:16:52,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:16:52,440 INFO L87 Difference]: Start difference. First operand 1239 states and 1991 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:52,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:52,581 INFO L93 Difference]: Finished difference Result 3619 states and 5887 transitions. [2024-10-31 22:16:52,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:16:52,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-10-31 22:16:52,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:52,591 INFO L225 Difference]: With dead ends: 3619 [2024-10-31 22:16:52,591 INFO L226 Difference]: Without dead ends: 2437 [2024-10-31 22:16:52,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:52,598 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 456 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:52,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 787 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:16:52,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2024-10-31 22:16:52,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 1829. [2024-10-31 22:16:52,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1828 states have (on average 1.6148796498905909) internal successors, (2952), 1828 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:52,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2952 transitions. [2024-10-31 22:16:52,647 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2952 transitions. Word has length 69 [2024-10-31 22:16:52,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:52,648 INFO L471 AbstractCegarLoop]: Abstraction has 1829 states and 2952 transitions. [2024-10-31 22:16:52,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:52,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2952 transitions. [2024-10-31 22:16:52,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-31 22:16:52,652 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:52,652 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:52,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:16:52,653 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:52,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:52,654 INFO L85 PathProgramCache]: Analyzing trace with hash -537020195, now seen corresponding path program 1 times [2024-10-31 22:16:52,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:52,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853851503] [2024-10-31 22:16:52,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:52,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:52,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:52,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:52,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853851503] [2024-10-31 22:16:52,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853851503] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:52,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:52,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:16:52,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724208557] [2024-10-31 22:16:52,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:52,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:16:52,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:52,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:16:52,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:16:52,814 INFO L87 Difference]: Start difference. First operand 1829 states and 2952 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:52,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:52,948 INFO L93 Difference]: Finished difference Result 5313 states and 8631 transitions. [2024-10-31 22:16:52,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:16:52,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-31 22:16:52,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:52,961 INFO L225 Difference]: With dead ends: 5313 [2024-10-31 22:16:52,961 INFO L226 Difference]: Without dead ends: 3541 [2024-10-31 22:16:52,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:52,965 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 456 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:52,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 729 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:16:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2024-10-31 22:16:53,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 2673. [2024-10-31 22:16:53,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2673 states, 2672 states have (on average 1.6137724550898203) internal successors, (4312), 2672 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:53,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2673 states to 2673 states and 4312 transitions. [2024-10-31 22:16:53,055 INFO L78 Accepts]: Start accepts. Automaton has 2673 states and 4312 transitions. Word has length 70 [2024-10-31 22:16:53,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:53,056 INFO L471 AbstractCegarLoop]: Abstraction has 2673 states and 4312 transitions. [2024-10-31 22:16:53,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:53,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2673 states and 4312 transitions. [2024-10-31 22:16:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-31 22:16:53,058 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:53,058 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:53,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:16:53,058 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:53,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:53,061 INFO L85 PathProgramCache]: Analyzing trace with hash 478855012, now seen corresponding path program 1 times [2024-10-31 22:16:53,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:53,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234934358] [2024-10-31 22:16:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:53,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:53,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:53,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234934358] [2024-10-31 22:16:53,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234934358] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:53,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:53,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:16:53,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484552909] [2024-10-31 22:16:53,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:53,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:16:53,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:53,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:16:53,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:16:53,193 INFO L87 Difference]: Start difference. First operand 2673 states and 4312 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:53,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:53,318 INFO L93 Difference]: Finished difference Result 7713 states and 12507 transitions. [2024-10-31 22:16:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:16:53,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2024-10-31 22:16:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:53,333 INFO L225 Difference]: With dead ends: 7713 [2024-10-31 22:16:53,334 INFO L226 Difference]: Without dead ends: 5097 [2024-10-31 22:16:53,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:53,339 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 454 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:53,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 772 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:16:53,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2024-10-31 22:16:53,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 3869. [2024-10-31 22:16:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3869 states, 3868 states have (on average 1.6116856256463288) internal successors, (6234), 3868 states have internal predecessors, (6234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3869 states to 3869 states and 6234 transitions. [2024-10-31 22:16:53,436 INFO L78 Accepts]: Start accepts. Automaton has 3869 states and 6234 transitions. Word has length 71 [2024-10-31 22:16:53,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:53,436 INFO L471 AbstractCegarLoop]: Abstraction has 3869 states and 6234 transitions. [2024-10-31 22:16:53,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:53,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3869 states and 6234 transitions. [2024-10-31 22:16:53,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-31 22:16:53,439 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:53,440 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:53,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:16:53,440 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:53,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:53,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1637619353, now seen corresponding path program 1 times [2024-10-31 22:16:53,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:53,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140046757] [2024-10-31 22:16:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:53,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:53,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:53,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140046757] [2024-10-31 22:16:53,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140046757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:53,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:53,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:16:53,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098104030] [2024-10-31 22:16:53,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:53,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:53,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:53,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:53,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:16:53,565 INFO L87 Difference]: Start difference. First operand 3869 states and 6234 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:53,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:53,632 INFO L93 Difference]: Finished difference Result 8646 states and 14040 transitions. [2024-10-31 22:16:53,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:53,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-10-31 22:16:53,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:53,649 INFO L225 Difference]: With dead ends: 8646 [2024-10-31 22:16:53,649 INFO L226 Difference]: Without dead ends: 5881 [2024-10-31 22:16:53,653 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 [2024-10-31 22:16:53,655 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 138 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 536 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 [2024-10-31 22:16:53,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 536 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:16:53,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5881 states. [2024-10-31 22:16:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5881 to 5879. [2024-10-31 22:16:53,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5879 states, 5878 states have (on average 1.6124532153793807) internal successors, (9478), 5878 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:53,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 9478 transitions. [2024-10-31 22:16:53,772 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 9478 transitions. Word has length 72 [2024-10-31 22:16:53,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:53,773 INFO L471 AbstractCegarLoop]: Abstraction has 5879 states and 9478 transitions. [2024-10-31 22:16:53,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:53,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 9478 transitions. [2024-10-31 22:16:53,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-31 22:16:53,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:53,774 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:53,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:16:53,775 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:53,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:53,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1419254461, now seen corresponding path program 1 times [2024-10-31 22:16:53,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:53,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599763010] [2024-10-31 22:16:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:53,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:53,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:53,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599763010] [2024-10-31 22:16:53,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599763010] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:53,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:53,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:16:53,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176526045] [2024-10-31 22:16:53,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:53,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:53,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:53,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:53,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:16:53,879 INFO L87 Difference]: Start difference. First operand 5879 states and 9478 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:53,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:53,969 INFO L93 Difference]: Finished difference Result 12993 states and 20995 transitions. [2024-10-31 22:16:53,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:53,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-10-31 22:16:53,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:54,015 INFO L225 Difference]: With dead ends: 12993 [2024-10-31 22:16:54,017 INFO L226 Difference]: Without dead ends: 8823 [2024-10-31 22:16:54,023 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 [2024-10-31 22:16:54,024 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 126 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 481 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 [2024-10-31 22:16:54,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 481 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:16:54,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8823 states. [2024-10-31 22:16:54,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8823 to 8821. [2024-10-31 22:16:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8821 states, 8820 states have (on average 1.6052154195011339) internal successors, (14158), 8820 states have internal predecessors, (14158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8821 states to 8821 states and 14158 transitions. [2024-10-31 22:16:54,259 INFO L78 Accepts]: Start accepts. Automaton has 8821 states and 14158 transitions. Word has length 72 [2024-10-31 22:16:54,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:54,259 INFO L471 AbstractCegarLoop]: Abstraction has 8821 states and 14158 transitions. [2024-10-31 22:16:54,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:54,259 INFO L276 IsEmpty]: Start isEmpty. Operand 8821 states and 14158 transitions. [2024-10-31 22:16:54,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-31 22:16:54,260 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:54,260 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:54,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:16:54,260 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:54,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:54,261 INFO L85 PathProgramCache]: Analyzing trace with hash 569279253, now seen corresponding path program 1 times [2024-10-31 22:16:54,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:54,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552940610] [2024-10-31 22:16:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:54,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:54,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:54,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552940610] [2024-10-31 22:16:54,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552940610] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:54,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:54,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:16:54,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638866527] [2024-10-31 22:16:54,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:54,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:16:54,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:54,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:16:54,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:16:54,376 INFO L87 Difference]: Start difference. First operand 8821 states and 14158 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:54,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:54,531 INFO L93 Difference]: Finished difference Result 19170 states and 30844 transitions. [2024-10-31 22:16:54,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:16:54,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-10-31 22:16:54,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:54,565 INFO L225 Difference]: With dead ends: 19170 [2024-10-31 22:16:54,565 INFO L226 Difference]: Without dead ends: 12906 [2024-10-31 22:16:54,575 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 [2024-10-31 22:16:54,575 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 132 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:54,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 521 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:16:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12906 states. [2024-10-31 22:16:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12906 to 12904. [2024-10-31 22:16:54,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12904 states, 12903 states have (on average 1.5969154460203054) internal successors, (20605), 12903 states have internal predecessors, (20605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:54,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12904 states to 12904 states and 20605 transitions. [2024-10-31 22:16:54,929 INFO L78 Accepts]: Start accepts. Automaton has 12904 states and 20605 transitions. Word has length 72 [2024-10-31 22:16:54,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:54,930 INFO L471 AbstractCegarLoop]: Abstraction has 12904 states and 20605 transitions. [2024-10-31 22:16:54,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:54,931 INFO L276 IsEmpty]: Start isEmpty. Operand 12904 states and 20605 transitions. [2024-10-31 22:16:54,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-31 22:16:54,931 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:54,931 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:54,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:16:54,932 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:54,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:54,932 INFO L85 PathProgramCache]: Analyzing trace with hash -899144939, now seen corresponding path program 1 times [2024-10-31 22:16:54,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:54,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252371196] [2024-10-31 22:16:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:54,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:55,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:55,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252371196] [2024-10-31 22:16:55,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252371196] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:55,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:55,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:16:55,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214560133] [2024-10-31 22:16:55,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:55,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:55,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:55,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:55,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:55,376 INFO L87 Difference]: Start difference. First operand 12904 states and 20605 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:55,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:55,657 INFO L93 Difference]: Finished difference Result 25719 states and 41086 transitions. [2024-10-31 22:16:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:55,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-31 22:16:55,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:55,687 INFO L225 Difference]: With dead ends: 25719 [2024-10-31 22:16:55,687 INFO L226 Difference]: Without dead ends: 12906 [2024-10-31 22:16:55,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:16:55,698 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 257 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:55,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 635 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:16:55,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12906 states. [2024-10-31 22:16:55,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12906 to 12904. [2024-10-31 22:16:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12904 states, 12903 states have (on average 1.5872277764860885) internal successors, (20480), 12903 states have internal predecessors, (20480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12904 states to 12904 states and 20480 transitions. [2024-10-31 22:16:56,008 INFO L78 Accepts]: Start accepts. Automaton has 12904 states and 20480 transitions. Word has length 73 [2024-10-31 22:16:56,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:56,008 INFO L471 AbstractCegarLoop]: Abstraction has 12904 states and 20480 transitions. [2024-10-31 22:16:56,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:56,009 INFO L276 IsEmpty]: Start isEmpty. Operand 12904 states and 20480 transitions. [2024-10-31 22:16:56,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-31 22:16:56,009 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:56,009 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:56,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:16:56,010 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:56,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:56,010 INFO L85 PathProgramCache]: Analyzing trace with hash -764385937, now seen corresponding path program 1 times [2024-10-31 22:16:56,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:56,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680431182] [2024-10-31 22:16:56,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:56,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:56,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:56,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:56,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680431182] [2024-10-31 22:16:56,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680431182] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:56,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:56,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:16:56,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906023927] [2024-10-31 22:16:56,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:56,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:56,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:56,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:56,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:56,357 INFO L87 Difference]: Start difference. First operand 12904 states and 20480 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2024-10-31 22:16:56,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:56,646 INFO L93 Difference]: Finished difference Result 36939 states and 58780 transitions. [2024-10-31 22:16:56,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:56,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-10-31 22:16:56,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:56,707 INFO L225 Difference]: With dead ends: 36939 [2024-10-31 22:16:56,707 INFO L226 Difference]: Without dead ends: 24126 [2024-10-31 22:16:56,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:16:56,724 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 379 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:56,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 641 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:16:56,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24126 states. [2024-10-31 22:16:57,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24126 to 24124. [2024-10-31 22:16:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24124 states, 24123 states have (on average 1.576711022675455) internal successors, (38035), 24123 states have internal predecessors, (38035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:57,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24124 states to 24124 states and 38035 transitions. [2024-10-31 22:16:57,300 INFO L78 Accepts]: Start accepts. Automaton has 24124 states and 38035 transitions. Word has length 76 [2024-10-31 22:16:57,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:57,301 INFO L471 AbstractCegarLoop]: Abstraction has 24124 states and 38035 transitions. [2024-10-31 22:16:57,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2024-10-31 22:16:57,301 INFO L276 IsEmpty]: Start isEmpty. Operand 24124 states and 38035 transitions. [2024-10-31 22:16:57,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-31 22:16:57,302 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:57,302 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:57,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:16:57,303 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:57,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:57,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2071930450, now seen corresponding path program 1 times [2024-10-31 22:16:57,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:57,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621037054] [2024-10-31 22:16:57,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:57,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:16:57,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:57,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621037054] [2024-10-31 22:16:57,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621037054] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:57,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:57,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:16:57,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900600945] [2024-10-31 22:16:57,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:57,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:57,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:57,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:57,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:57,933 INFO L87 Difference]: Start difference. First operand 24124 states and 38035 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2024-10-31 22:16:58,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:58,100 INFO L93 Difference]: Finished difference Result 24850 states and 39122 transitions. [2024-10-31 22:16:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:58,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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 77 [2024-10-31 22:16:58,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:58,164 INFO L225 Difference]: With dead ends: 24850 [2024-10-31 22:16:58,164 INFO L226 Difference]: Without dead ends: 24848 [2024-10-31 22:16:58,173 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 [2024-10-31 22:16:58,174 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 0 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:58,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 904 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:16:58,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24848 states. [2024-10-31 22:16:58,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24848 to 24848. [2024-10-31 22:16:58,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24848 states, 24847 states have (on average 1.5595444118002173) internal successors, (38750), 24847 states have internal predecessors, (38750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:58,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24848 states to 24848 states and 38750 transitions. [2024-10-31 22:16:58,747 INFO L78 Accepts]: Start accepts. Automaton has 24848 states and 38750 transitions. Word has length 77 [2024-10-31 22:16:58,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:16:58,748 INFO L471 AbstractCegarLoop]: Abstraction has 24848 states and 38750 transitions. [2024-10-31 22:16:58,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2024-10-31 22:16:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 24848 states and 38750 transitions. [2024-10-31 22:16:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-31 22:16:58,755 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:16:58,760 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:16:58,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:16:58,760 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:16:58,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:16:58,761 INFO L85 PathProgramCache]: Analyzing trace with hash 555059603, now seen corresponding path program 1 times [2024-10-31 22:16:58,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:16:58,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482413355] [2024-10-31 22:16:58,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:16:58,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:16:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:16:59,019 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:16:59,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:16:59,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482413355] [2024-10-31 22:16:59,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482413355] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:16:59,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:16:59,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:16:59,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437446374] [2024-10-31 22:16:59,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:16:59,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:16:59,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:16:59,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:16:59,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:16:59,022 INFO L87 Difference]: Start difference. First operand 24848 states and 38750 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:16:59,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:16:59,455 INFO L93 Difference]: Finished difference Result 60736 states and 95072 transitions. [2024-10-31 22:16:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:16:59,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 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 103 [2024-10-31 22:16:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:16:59,539 INFO L225 Difference]: With dead ends: 60736 [2024-10-31 22:16:59,539 INFO L226 Difference]: Without dead ends: 48774 [2024-10-31 22:16:59,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:16:59,561 INFO L432 NwaCegarLoop]: 368 mSDtfsCounter, 575 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:16:59,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1049 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:16:59,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48774 states. [2024-10-31 22:17:00,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48774 to 38128. [2024-10-31 22:17:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38128 states, 38127 states have (on average 1.5578986020405488) internal successors, (59398), 38127 states have internal predecessors, (59398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38128 states to 38128 states and 59398 transitions. [2024-10-31 22:17:00,617 INFO L78 Accepts]: Start accepts. Automaton has 38128 states and 59398 transitions. Word has length 103 [2024-10-31 22:17:00,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:17:00,618 INFO L471 AbstractCegarLoop]: Abstraction has 38128 states and 59398 transitions. [2024-10-31 22:17:00,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:00,618 INFO L276 IsEmpty]: Start isEmpty. Operand 38128 states and 59398 transitions. [2024-10-31 22:17:00,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-31 22:17:00,621 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:00,622 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:00,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:17:00,622 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:17:00,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:00,623 INFO L85 PathProgramCache]: Analyzing trace with hash 773424495, now seen corresponding path program 1 times [2024-10-31 22:17:00,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:00,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482393478] [2024-10-31 22:17:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:00,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-31 22:17:00,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:00,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482393478] [2024-10-31 22:17:00,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482393478] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:00,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:00,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:17:00,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113550397] [2024-10-31 22:17:00,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:00,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:17:00,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:00,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:17:00,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:17:00,981 INFO L87 Difference]: Start difference. First operand 38128 states and 59398 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:01,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:01,294 INFO L93 Difference]: Finished difference Result 68122 states and 106644 transitions. [2024-10-31 22:17:01,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:17:01,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 103 [2024-10-31 22:17:01,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:17:01,529 INFO L225 Difference]: With dead ends: 68122 [2024-10-31 22:17:01,530 INFO L226 Difference]: Without dead ends: 56390 [2024-10-31 22:17:01,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:17:01,563 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 586 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:17:01,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 1046 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:17:01,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56390 states. [2024-10-31 22:17:02,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56390 to 51632. [2024-10-31 22:17:02,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51632 states, 51631 states have (on average 1.559605663264318) internal successors, (80524), 51631 states have internal predecessors, (80524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51632 states to 51632 states and 80524 transitions. [2024-10-31 22:17:02,642 INFO L78 Accepts]: Start accepts. Automaton has 51632 states and 80524 transitions. Word has length 103 [2024-10-31 22:17:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:17:02,642 INFO L471 AbstractCegarLoop]: Abstraction has 51632 states and 80524 transitions. [2024-10-31 22:17:02,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 51632 states and 80524 transitions. [2024-10-31 22:17:02,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-31 22:17:02,646 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:02,647 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:02,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 22:17:02,647 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:17:02,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:02,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1533009087, now seen corresponding path program 1 times [2024-10-31 22:17:02,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:02,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315507369] [2024-10-31 22:17:02,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:02,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-31 22:17:02,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:02,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315507369] [2024-10-31 22:17:02,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315507369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:02,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:02,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:17:02,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048486627] [2024-10-31 22:17:02,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:02,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:17:02,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:02,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:17:02,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:17:02,918 INFO L87 Difference]: Start difference. First operand 51632 states and 80524 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:03,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:03,656 INFO L93 Difference]: Finished difference Result 72782 states and 113944 transitions. [2024-10-31 22:17:03,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:17:03,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 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 103 [2024-10-31 22:17:03,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:17:03,751 INFO L225 Difference]: With dead ends: 72782 [2024-10-31 22:17:03,752 INFO L226 Difference]: Without dead ends: 61050 [2024-10-31 22:17:03,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:17:03,765 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 581 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:17:03,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1150 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:17:03,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61050 states. [2024-10-31 22:17:04,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61050 to 59156. [2024-10-31 22:17:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59156 states, 59155 states have (on average 1.5613219508072014) internal successors, (92360), 59155 states have internal predecessors, (92360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:04,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59156 states to 59156 states and 92360 transitions. [2024-10-31 22:17:04,756 INFO L78 Accepts]: Start accepts. Automaton has 59156 states and 92360 transitions. Word has length 103 [2024-10-31 22:17:04,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:17:04,756 INFO L471 AbstractCegarLoop]: Abstraction has 59156 states and 92360 transitions. [2024-10-31 22:17:04,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:04,757 INFO L276 IsEmpty]: Start isEmpty. Operand 59156 states and 92360 transitions. [2024-10-31 22:17:04,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-31 22:17:04,759 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:04,759 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:04,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 22:17:04,760 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:17:04,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:04,761 INFO L85 PathProgramCache]: Analyzing trace with hash -35525664, now seen corresponding path program 1 times [2024-10-31 22:17:04,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:04,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983417933] [2024-10-31 22:17:04,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:04,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:17:04,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:04,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983417933] [2024-10-31 22:17:04,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983417933] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:04,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:04,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:17:04,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232589744] [2024-10-31 22:17:04,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:04,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:17:04,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:04,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:17:04,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:17:04,932 INFO L87 Difference]: Start difference. First operand 59156 states and 92360 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:05,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:05,593 INFO L93 Difference]: Finished difference Result 96279 states and 151019 transitions. [2024-10-31 22:17:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:17:05,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 104 [2024-10-31 22:17:05,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:17:05,721 INFO L225 Difference]: With dead ends: 96279 [2024-10-31 22:17:05,721 INFO L226 Difference]: Without dead ends: 76701 [2024-10-31 22:17:05,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:17:05,743 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 266 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:17:05,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 737 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:17:05,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76701 states. [2024-10-31 22:17:06,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76701 to 74809. [2024-10-31 22:17:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74809 states, 74808 states have (on average 1.5616511603037109) internal successors, (116824), 74808 states have internal predecessors, (116824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:07,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74809 states to 74809 states and 116824 transitions. [2024-10-31 22:17:07,095 INFO L78 Accepts]: Start accepts. Automaton has 74809 states and 116824 transitions. Word has length 104 [2024-10-31 22:17:07,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:17:07,096 INFO L471 AbstractCegarLoop]: Abstraction has 74809 states and 116824 transitions. [2024-10-31 22:17:07,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:07,096 INFO L276 IsEmpty]: Start isEmpty. Operand 74809 states and 116824 transitions. [2024-10-31 22:17:07,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-31 22:17:07,099 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:07,099 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:07,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-31 22:17:07,100 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:17:07,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:07,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1812785472, now seen corresponding path program 1 times [2024-10-31 22:17:07,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:07,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167470406] [2024-10-31 22:17:07,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:07,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:07,239 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:17:07,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:07,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167470406] [2024-10-31 22:17:07,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167470406] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:07,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:07,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:17:07,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159243062] [2024-10-31 22:17:07,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:07,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:07,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:07,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:07,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:07,243 INFO L87 Difference]: Start difference. First operand 74809 states and 116824 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:08,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:08,334 INFO L93 Difference]: Finished difference Result 161251 states and 252607 transitions. [2024-10-31 22:17:08,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:08,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 104 [2024-10-31 22:17:08,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:17:08,608 INFO L225 Difference]: With dead ends: 161251 [2024-10-31 22:17:08,608 INFO L226 Difference]: Without dead ends: 126189 [2024-10-31 22:17:08,668 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 [2024-10-31 22:17:08,669 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 117 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:17:08,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 428 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:17:08,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126189 states. [2024-10-31 22:17:10,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126189 to 125911. [2024-10-31 22:17:10,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125911 states, 125910 states have (on average 1.5617822253990945) internal successors, (196644), 125910 states have internal predecessors, (196644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125911 states to 125911 states and 196644 transitions. [2024-10-31 22:17:11,047 INFO L78 Accepts]: Start accepts. Automaton has 125911 states and 196644 transitions. Word has length 104 [2024-10-31 22:17:11,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:17:11,047 INFO L471 AbstractCegarLoop]: Abstraction has 125911 states and 196644 transitions. [2024-10-31 22:17:11,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:11,048 INFO L276 IsEmpty]: Start isEmpty. Operand 125911 states and 196644 transitions. [2024-10-31 22:17:11,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-31 22:17:11,050 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:11,051 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:11,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-31 22:17:11,051 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:17:11,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:11,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1057251553, now seen corresponding path program 1 times [2024-10-31 22:17:11,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:11,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469386370] [2024-10-31 22:17:11,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:11,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:11,151 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:11,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:11,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469386370] [2024-10-31 22:17:11,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469386370] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:11,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:11,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:17:11,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516453174] [2024-10-31 22:17:11,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:11,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:11,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:11,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:11,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:11,154 INFO L87 Difference]: Start difference. First operand 125911 states and 196644 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:12,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:12,959 INFO L93 Difference]: Finished difference Result 370557 states and 578073 transitions. [2024-10-31 22:17:12,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:12,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2024-10-31 22:17:12,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:17:13,430 INFO L225 Difference]: With dead ends: 370557 [2024-10-31 22:17:13,431 INFO L226 Difference]: Without dead ends: 244737 [2024-10-31 22:17:13,561 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 [2024-10-31 22:17:13,562 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 178 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:17:13,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 561 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:17:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244737 states.