./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label07.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_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/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_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/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_3426af53-75d3-4b11-975a-4d54111882c7/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 56a04ed46850e605182228c8e81c7d165207799703ed3ae3590996aae38bb805 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:17:46,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:17:46,372 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:17:46,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:17:46,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:17:46,410 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:17:46,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:17:46,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:17:46,414 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:17:46,415 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:17:46,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:17:46,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:17:46,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:17:46,419 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:17:46,419 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:17:46,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:17:46,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:17:46,424 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:17:46,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:17:46,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:17:46,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:17:46,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:17:46,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:17:46,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:17:46,428 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:17:46,428 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:17:46,429 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:17:46,429 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:17:46,430 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:17:46,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:17:46,431 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:17:46,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:17:46,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:46,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:17:46,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:17:46,433 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:17:46,433 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:17:46,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:17:46,434 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:17:46,434 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:17:46,435 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:17:46,436 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:17:46,436 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_3426af53-75d3-4b11-975a-4d54111882c7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56a04ed46850e605182228c8e81c7d165207799703ed3ae3590996aae38bb805 [2024-10-31 22:17:46,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:17:46,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:17:46,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:17:46,773 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:17:46,773 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:17:46,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/eca-rers2012/Problem14_label07.c Unable to find full path for "g++" [2024-10-31 22:17:48,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:17:49,163 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:17:49,163 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/sv-benchmarks/c/eca-rers2012/Problem14_label07.c [2024-10-31 22:17:49,181 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/data/bf7284621/47b1943906f741669bc813832cc5cc3f/FLAGebf13ae3c [2024-10-31 22:17:49,198 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/data/bf7284621/47b1943906f741669bc813832cc5cc3f [2024-10-31 22:17:49,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:17:49,204 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:17:49,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:49,206 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:17:49,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:17:49,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:49" (1/1) ... [2024-10-31 22:17:49,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f4c6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:49, skipping insertion in model container [2024-10-31 22:17:49,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:49" (1/1) ... [2024-10-31 22:17:49,288 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:17:49,584 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_3426af53-75d3-4b11-975a-4d54111882c7/sv-benchmarks/c/eca-rers2012/Problem14_label07.c[4912,4925] [2024-10-31 22:17:49,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:49,853 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:17:49,895 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_3426af53-75d3-4b11-975a-4d54111882c7/sv-benchmarks/c/eca-rers2012/Problem14_label07.c[4912,4925] [2024-10-31 22:17:50,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:50,144 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:17:50,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:50 WrapperNode [2024-10-31 22:17:50,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:50,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:50,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:17:50,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:17:50,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:50" (1/1) ... [2024-10-31 22:17:50,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:50" (1/1) ... [2024-10-31 22:17:50,287 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 859 [2024-10-31 22:17:50,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:50,288 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:17:50,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:17:50,289 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:17:50,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:50" (1/1) ... [2024-10-31 22:17:50,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:50" (1/1) ... [2024-10-31 22:17:50,319 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:50" (1/1) ... [2024-10-31 22:17:50,357 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 22:17:50,358 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:50" (1/1) ... [2024-10-31 22:17:50,358 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:50" (1/1) ... [2024-10-31 22:17:50,397 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:50" (1/1) ... [2024-10-31 22:17:50,420 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:50" (1/1) ... [2024-10-31 22:17:50,436 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:50" (1/1) ... [2024-10-31 22:17:50,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:50" (1/1) ... [2024-10-31 22:17:50,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:17:50,463 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:17:50,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:17:50,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:17:50,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:50" (1/1) ... [2024-10-31 22:17:50,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:50,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:50,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:50,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:17:50,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:17:50,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:17:50,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:17:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:17:50,662 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:17:50,664 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:17:52,333 INFO L? ?]: Removed 123 outVars from TransFormulas that were not future-live. [2024-10-31 22:17:52,333 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:17:52,362 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:17:52,362 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:17:52,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:52 BoogieIcfgContainer [2024-10-31 22:17:52,364 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:17:52,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:17:52,368 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:17:52,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:17:52,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:17:49" (1/3) ... [2024-10-31 22:17:52,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe0808c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:52, skipping insertion in model container [2024-10-31 22:17:52,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:50" (2/3) ... [2024-10-31 22:17:52,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe0808c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:52, skipping insertion in model container [2024-10-31 22:17:52,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:52" (3/3) ... [2024-10-31 22:17:52,378 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label07.c [2024-10-31 22:17:52,400 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:17:52,400 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:17:52,495 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:17:52,503 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;@5731d906, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:17:52,503 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:17:52,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 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 22:17:52,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-31 22:17:52,518 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:52,519 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:52,520 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:17:52,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:52,527 INFO L85 PathProgramCache]: Analyzing trace with hash 433832817, now seen corresponding path program 1 times [2024-10-31 22:17:52,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:52,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070859610] [2024-10-31 22:17:52,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:52,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:53,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:53,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070859610] [2024-10-31 22:17:53,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070859610] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:53,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:53,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:17:53,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577717749] [2024-10-31 22:17:53,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:53,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:53,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:53,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:53,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:53,116 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 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 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:54,462 INFO L93 Difference]: Finished difference Result 669 states and 1200 transitions. [2024-10-31 22:17:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:54,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-10-31 22:17:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:17:54,487 INFO L225 Difference]: With dead ends: 669 [2024-10-31 22:17:54,487 INFO L226 Difference]: Without dead ends: 360 [2024-10-31 22:17:54,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 22:17:54,499 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 159 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:17:54,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 77 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-31 22:17:54,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-10-31 22:17:54,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-10-31 22:17:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.6378830083565459) internal successors, (588), 359 states have internal predecessors, (588), 0 states have call successors, (0), 0 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 22:17:54,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 588 transitions. [2024-10-31 22:17:54,582 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 588 transitions. Word has length 47 [2024-10-31 22:17:54,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:17:54,582 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 588 transitions. [2024-10-31 22:17:54,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:54,583 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 588 transitions. [2024-10-31 22:17:54,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-31 22:17:54,587 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:54,587 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-31 22:17:54,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:17:54,588 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:17:54,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:54,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1967938748, now seen corresponding path program 1 times [2024-10-31 22:17:54,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:54,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171712455] [2024-10-31 22:17:54,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:54,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:54,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:54,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171712455] [2024-10-31 22:17:54,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171712455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:54,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:54,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:17:54,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978541362] [2024-10-31 22:17:54,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:54,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:54,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:54,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:54,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:54,864 INFO L87 Difference]: Start difference. First operand 360 states and 588 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 22:17:55,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:55,912 INFO L93 Difference]: Finished difference Result 1074 states and 1759 transitions. [2024-10-31 22:17:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:55,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-10-31 22:17:55,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:17:55,917 INFO L225 Difference]: With dead ends: 1074 [2024-10-31 22:17:55,918 INFO L226 Difference]: Without dead ends: 716 [2024-10-31 22:17:55,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 22:17:55,921 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 132 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:17:55,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 89 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-31 22:17:55,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-10-31 22:17:55,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 538. [2024-10-31 22:17:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.4934823091247673) internal successors, (802), 537 states have internal predecessors, (802), 0 states have call successors, (0), 0 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 22:17:55,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 802 transitions. [2024-10-31 22:17:55,982 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 802 transitions. Word has length 112 [2024-10-31 22:17:55,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:17:55,983 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 802 transitions. [2024-10-31 22:17:55,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 22:17:55,983 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 802 transitions. [2024-10-31 22:17:55,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-31 22:17:55,988 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:55,988 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-31 22:17:55,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:17:55,989 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:17:55,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:55,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1697201153, now seen corresponding path program 1 times [2024-10-31 22:17:55,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:55,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219570290] [2024-10-31 22:17:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:55,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:56,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:56,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219570290] [2024-10-31 22:17:56,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219570290] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:56,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:56,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:17:56,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86755843] [2024-10-31 22:17:56,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:56,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:17:56,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:56,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:17:56,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:17:56,596 INFO L87 Difference]: Start difference. First operand 538 states and 802 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:57,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:57,957 INFO L93 Difference]: Finished difference Result 1430 states and 2030 transitions. [2024-10-31 22:17:57,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:17:57,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-10-31 22:17:57,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:17:57,962 INFO L225 Difference]: With dead ends: 1430 [2024-10-31 22:17:57,962 INFO L226 Difference]: Without dead ends: 894 [2024-10-31 22:17:57,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:17:57,965 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 419 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:17:57,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 121 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-31 22:17:57,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2024-10-31 22:17:57,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 894. [2024-10-31 22:17:57,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.3370660694288914) internal successors, (1194), 893 states have internal predecessors, (1194), 0 states have call successors, (0), 0 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 22:17:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1194 transitions. [2024-10-31 22:17:57,993 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1194 transitions. Word has length 126 [2024-10-31 22:17:57,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:17:57,994 INFO L471 AbstractCegarLoop]: Abstraction has 894 states and 1194 transitions. [2024-10-31 22:17:57,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:17:57,994 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1194 transitions. [2024-10-31 22:17:57,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-10-31 22:17:57,999 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:57,999 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:57,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:17:58,000 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:17:58,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:58,001 INFO L85 PathProgramCache]: Analyzing trace with hash 18940108, now seen corresponding path program 1 times [2024-10-31 22:17:58,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:58,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17661597] [2024-10-31 22:17:58,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:58,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-31 22:17:58,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:58,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17661597] [2024-10-31 22:17:58,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17661597] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:58,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:58,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:17:58,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172126244] [2024-10-31 22:17:58,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:58,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:17:58,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:58,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:17:58,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:17:58,621 INFO L87 Difference]: Start difference. First operand 894 states and 1194 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 22:17:59,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:59,720 INFO L93 Difference]: Finished difference Result 1993 states and 2629 transitions. [2024-10-31 22:17:59,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:17:59,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 206 [2024-10-31 22:17:59,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:17:59,726 INFO L225 Difference]: With dead ends: 1993 [2024-10-31 22:17:59,726 INFO L226 Difference]: Without dead ends: 1072 [2024-10-31 22:17:59,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:17:59,729 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 116 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:17:59,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 119 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-31 22:17:59,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2024-10-31 22:17:59,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2024-10-31 22:17:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.1802054154995332) internal successors, (1264), 1071 states have internal predecessors, (1264), 0 states have call successors, (0), 0 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 22:17:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1264 transitions. [2024-10-31 22:17:59,774 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1264 transitions. Word has length 206 [2024-10-31 22:17:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:17:59,775 INFO L471 AbstractCegarLoop]: Abstraction has 1072 states and 1264 transitions. [2024-10-31 22:17:59,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 22:17:59,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1264 transitions. [2024-10-31 22:17:59,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-10-31 22:17:59,779 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:59,779 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2024-10-31 22:17:59,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:17:59,779 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:17:59,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:59,780 INFO L85 PathProgramCache]: Analyzing trace with hash 721063632, now seen corresponding path program 1 times [2024-10-31 22:17:59,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:59,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329927682] [2024-10-31 22:17:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:59,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:00,296 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 89 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:00,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:00,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329927682] [2024-10-31 22:18:00,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329927682] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:00,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773384431] [2024-10-31 22:18:00,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:00,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:00,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:00,301 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:00,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:18:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:00,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:18:00,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-31 22:18:00,635 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:18:00,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773384431] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:00,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:18:00,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-31 22:18:00,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768848185] [2024-10-31 22:18:00,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:00,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:00,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:00,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:00,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:18:00,642 INFO L87 Difference]: Start difference. First operand 1072 states and 1264 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 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 22:18:01,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:01,487 INFO L93 Difference]: Finished difference Result 2498 states and 3033 transitions. [2024-10-31 22:18:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:01,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 218 [2024-10-31 22:18:01,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:01,495 INFO L225 Difference]: With dead ends: 2498 [2024-10-31 22:18:01,495 INFO L226 Difference]: Without dead ends: 1428 [2024-10-31 22:18:01,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:18:01,498 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 136 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:01,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 85 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 22:18:01,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2024-10-31 22:18:01,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1072. [2024-10-31 22:18:01,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.1802054154995332) internal successors, (1264), 1071 states have internal predecessors, (1264), 0 states have call successors, (0), 0 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 22:18:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1264 transitions. [2024-10-31 22:18:01,535 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1264 transitions. Word has length 218 [2024-10-31 22:18:01,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:01,536 INFO L471 AbstractCegarLoop]: Abstraction has 1072 states and 1264 transitions. [2024-10-31 22:18:01,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 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 22:18:01,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1264 transitions. [2024-10-31 22:18:01,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-10-31 22:18:01,541 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:01,541 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-31 22:18:01,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:18:01,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:01,742 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:01,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:01,743 INFO L85 PathProgramCache]: Analyzing trace with hash -138953033, now seen corresponding path program 1 times [2024-10-31 22:18:01,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:01,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747518177] [2024-10-31 22:18:01,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:01,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:02,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:02,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747518177] [2024-10-31 22:18:02,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747518177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:02,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:02,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:18:02,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070807859] [2024-10-31 22:18:02,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:02,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:02,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:02,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:02,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:18:02,143 INFO L87 Difference]: Start difference. First operand 1072 states and 1264 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 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 22:18:02,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:02,952 INFO L93 Difference]: Finished difference Result 2676 states and 3213 transitions. [2024-10-31 22:18:02,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:02,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2024-10-31 22:18:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:02,959 INFO L225 Difference]: With dead ends: 2676 [2024-10-31 22:18:02,960 INFO L226 Difference]: Without dead ends: 1606 [2024-10-31 22:18:02,962 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 22:18:02,963 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 111 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:02,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 58 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 22:18:02,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2024-10-31 22:18:02,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1428. [2024-10-31 22:18:02,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 1.156271899088998) internal successors, (1650), 1427 states have internal predecessors, (1650), 0 states have call successors, (0), 0 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 22:18:03,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1650 transitions. [2024-10-31 22:18:03,001 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1650 transitions. Word has length 221 [2024-10-31 22:18:03,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:03,002 INFO L471 AbstractCegarLoop]: Abstraction has 1428 states and 1650 transitions. [2024-10-31 22:18:03,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 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 22:18:03,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1650 transitions. [2024-10-31 22:18:03,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-10-31 22:18:03,009 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:03,009 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:03,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:18:03,010 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:03,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:03,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1874831652, now seen corresponding path program 1 times [2024-10-31 22:18:03,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:03,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144432800] [2024-10-31 22:18:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:03,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 189 proven. 130 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-31 22:18:03,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:03,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144432800] [2024-10-31 22:18:03,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144432800] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:03,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430200922] [2024-10-31 22:18:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:03,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:03,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:03,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:03,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:18:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:03,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:18:03,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2024-10-31 22:18:04,487 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:18:04,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430200922] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:04,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:18:04,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-31 22:18:04,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865603103] [2024-10-31 22:18:04,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:04,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:04,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:04,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:04,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:18:04,493 INFO L87 Difference]: Start difference. First operand 1428 states and 1650 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 22:18:05,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:05,246 INFO L93 Difference]: Finished difference Result 3210 states and 3788 transitions. [2024-10-31 22:18:05,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:05,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 340 [2024-10-31 22:18:05,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:05,254 INFO L225 Difference]: With dead ends: 3210 [2024-10-31 22:18:05,254 INFO L226 Difference]: Without dead ends: 1962 [2024-10-31 22:18:05,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:18:05,258 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 82 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:05,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 47 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-31 22:18:05,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2024-10-31 22:18:05,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1784. [2024-10-31 22:18:05,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1783 states have (on average 1.1402131239484015) internal successors, (2033), 1783 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:18:05,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2033 transitions. [2024-10-31 22:18:05,304 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2033 transitions. Word has length 340 [2024-10-31 22:18:05,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:05,306 INFO L471 AbstractCegarLoop]: Abstraction has 1784 states and 2033 transitions. [2024-10-31 22:18:05,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 22:18:05,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2033 transitions. [2024-10-31 22:18:05,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-10-31 22:18:05,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:05,315 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-31 22:18:05,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:05,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:05,516 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:05,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:05,516 INFO L85 PathProgramCache]: Analyzing trace with hash -532753135, now seen corresponding path program 1 times [2024-10-31 22:18:05,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:05,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802817481] [2024-10-31 22:18:05,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:05,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-10-31 22:18:06,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:06,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802817481] [2024-10-31 22:18:06,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802817481] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:06,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:06,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:18:06,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970573769] [2024-10-31 22:18:06,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:06,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:18:06,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:06,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:18:06,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:18:06,064 INFO L87 Difference]: Start difference. First operand 1784 states and 2033 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 22:18:07,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:07,060 INFO L93 Difference]: Finished difference Result 3595 states and 4116 transitions. [2024-10-31 22:18:07,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:18:07,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 417 [2024-10-31 22:18:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:07,069 INFO L225 Difference]: With dead ends: 3595 [2024-10-31 22:18:07,069 INFO L226 Difference]: Without dead ends: 1962 [2024-10-31 22:18:07,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:18:07,073 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 141 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:07,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 17 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-31 22:18:07,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2024-10-31 22:18:07,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1784. [2024-10-31 22:18:07,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1783 states have (on average 1.089736399326977) internal successors, (1943), 1783 states have internal predecessors, (1943), 0 states have call successors, (0), 0 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 22:18:07,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 1943 transitions. [2024-10-31 22:18:07,130 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 1943 transitions. Word has length 417 [2024-10-31 22:18:07,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:07,131 INFO L471 AbstractCegarLoop]: Abstraction has 1784 states and 1943 transitions. [2024-10-31 22:18:07,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 22:18:07,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 1943 transitions. [2024-10-31 22:18:07,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2024-10-31 22:18:07,149 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:07,149 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:07,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:18:07,150 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:07,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:07,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1190620738, now seen corresponding path program 1 times [2024-10-31 22:18:07,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:07,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463570821] [2024-10-31 22:18:07,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:07,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-10-31 22:18:07,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:07,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463570821] [2024-10-31 22:18:07,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463570821] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:07,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:07,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:18:07,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400819712] [2024-10-31 22:18:07,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:07,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:07,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:07,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:07,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:18:07,764 INFO L87 Difference]: Start difference. First operand 1784 states and 1943 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 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 22:18:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:08,479 INFO L93 Difference]: Finished difference Result 4100 states and 4527 transitions. [2024-10-31 22:18:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:08,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 440 [2024-10-31 22:18:08,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:08,488 INFO L225 Difference]: With dead ends: 4100 [2024-10-31 22:18:08,489 INFO L226 Difference]: Without dead ends: 2496 [2024-10-31 22:18:08,491 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 22:18:08,492 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 113 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:08,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 202 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-31 22:18:08,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2024-10-31 22:18:08,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2496. [2024-10-31 22:18:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 1.092184368737475) internal successors, (2725), 2495 states have internal predecessors, (2725), 0 states have call successors, (0), 0 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 22:18:08,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 2725 transitions. [2024-10-31 22:18:08,545 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 2725 transitions. Word has length 440 [2024-10-31 22:18:08,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:08,546 INFO L471 AbstractCegarLoop]: Abstraction has 2496 states and 2725 transitions. [2024-10-31 22:18:08,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 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 22:18:08,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 2725 transitions. [2024-10-31 22:18:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-10-31 22:18:08,550 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:08,550 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:08,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:18:08,550 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:08,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:08,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1892789993, now seen corresponding path program 1 times [2024-10-31 22:18:08,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:08,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552363422] [2024-10-31 22:18:08,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:08,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 499 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-10-31 22:18:08,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:08,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552363422] [2024-10-31 22:18:08,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552363422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:08,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:08,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:18:08,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180092343] [2024-10-31 22:18:08,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:08,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:08,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:08,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:08,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:18:08,942 INFO L87 Difference]: Start difference. First operand 2496 states and 2725 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 22:18:09,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:09,708 INFO L93 Difference]: Finished difference Result 6058 states and 6693 transitions. [2024-10-31 22:18:09,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:09,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 481 [2024-10-31 22:18:09,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:09,720 INFO L225 Difference]: With dead ends: 6058 [2024-10-31 22:18:09,720 INFO L226 Difference]: Without dead ends: 3742 [2024-10-31 22:18:09,724 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 22:18:09,725 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 74 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:09,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 50 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-31 22:18:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2024-10-31 22:18:09,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3742. [2024-10-31 22:18:09,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3741 states have (on average 1.0828655439722) internal successors, (4051), 3741 states have internal predecessors, (4051), 0 states have call successors, (0), 0 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 22:18:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 4051 transitions. [2024-10-31 22:18:09,813 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 4051 transitions. Word has length 481 [2024-10-31 22:18:09,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:09,814 INFO L471 AbstractCegarLoop]: Abstraction has 3742 states and 4051 transitions. [2024-10-31 22:18:09,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 22:18:09,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 4051 transitions. [2024-10-31 22:18:09,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2024-10-31 22:18:09,818 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:09,819 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:09,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:18:09,819 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:09,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:09,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2029932731, now seen corresponding path program 1 times [2024-10-31 22:18:09,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:09,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050543900] [2024-10-31 22:18:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:09,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:10,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 660 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2024-10-31 22:18:10,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:10,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050543900] [2024-10-31 22:18:10,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050543900] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:10,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:10,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:18:10,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19468828] [2024-10-31 22:18:10,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:10,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:10,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:10,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:10,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:18:10,438 INFO L87 Difference]: Start difference. First operand 3742 states and 4051 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 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 22:18:11,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:11,217 INFO L93 Difference]: Finished difference Result 7304 states and 7921 transitions. [2024-10-31 22:18:11,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:11,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 517 [2024-10-31 22:18:11,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:11,231 INFO L225 Difference]: With dead ends: 7304 [2024-10-31 22:18:11,231 INFO L226 Difference]: Without dead ends: 3742 [2024-10-31 22:18:11,235 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 22:18:11,236 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 103 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:11,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 242 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-31 22:18:11,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2024-10-31 22:18:11,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3208. [2024-10-31 22:18:11,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.078578110383536) internal successors, (3459), 3207 states have internal predecessors, (3459), 0 states have call successors, (0), 0 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 22:18:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3459 transitions. [2024-10-31 22:18:11,328 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3459 transitions. Word has length 517 [2024-10-31 22:18:11,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:11,330 INFO L471 AbstractCegarLoop]: Abstraction has 3208 states and 3459 transitions. [2024-10-31 22:18:11,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 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 22:18:11,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3459 transitions. [2024-10-31 22:18:11,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2024-10-31 22:18:11,339 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:11,339 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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] [2024-10-31 22:18:11,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:18:11,340 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:11,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:11,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1737325549, now seen corresponding path program 1 times [2024-10-31 22:18:11,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:11,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042649776] [2024-10-31 22:18:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 867 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-10-31 22:18:11,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:11,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042649776] [2024-10-31 22:18:11,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042649776] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:11,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767496118] [2024-10-31 22:18:11,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:11,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:11,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:12,001 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:12,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:18:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:12,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:18:12,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2024-10-31 22:18:12,388 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:18:12,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767496118] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:12,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:18:12,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-31 22:18:12,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143668930] [2024-10-31 22:18:12,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:12,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:12,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:12,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:12,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:18:12,391 INFO L87 Difference]: Start difference. First operand 3208 states and 3459 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 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 22:18:13,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:13,134 INFO L93 Difference]: Finished difference Result 7304 states and 7916 transitions. [2024-10-31 22:18:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:18:13,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 636 [2024-10-31 22:18:13,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:13,152 INFO L225 Difference]: With dead ends: 7304 [2024-10-31 22:18:13,153 INFO L226 Difference]: Without dead ends: 4276 [2024-10-31 22:18:13,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:18:13,157 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 134 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:13,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 237 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-31 22:18:13,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2024-10-31 22:18:13,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 4098. [2024-10-31 22:18:13,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.0717598242616548) internal successors, (4391), 4097 states have internal predecessors, (4391), 0 states have call successors, (0), 0 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 22:18:13,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 4391 transitions. [2024-10-31 22:18:13,246 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 4391 transitions. Word has length 636 [2024-10-31 22:18:13,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:13,247 INFO L471 AbstractCegarLoop]: Abstraction has 4098 states and 4391 transitions. [2024-10-31 22:18:13,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 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 22:18:13,248 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 4391 transitions. [2024-10-31 22:18:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2024-10-31 22:18:13,254 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:13,255 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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] [2024-10-31 22:18:13,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:18:13,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:13,460 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:13,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:13,461 INFO L85 PathProgramCache]: Analyzing trace with hash 233732893, now seen corresponding path program 1 times [2024-10-31 22:18:13,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:13,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335749475] [2024-10-31 22:18:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:13,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1730 backedges. 1261 proven. 110 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2024-10-31 22:18:14,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:14,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335749475] [2024-10-31 22:18:14,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335749475] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:14,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989833820] [2024-10-31 22:18:14,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:14,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:14,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:14,244 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:14,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3426af53-75d3-4b11-975a-4d54111882c7/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:18:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:14,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:18:14,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1730 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 1461 trivial. 0 not checked. [2024-10-31 22:18:14,626 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:18:14,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989833820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:14,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:18:14,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-31 22:18:14,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145386384] [2024-10-31 22:18:14,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:14,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:18:14,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:14,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:18:14,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:18:14,631 INFO L87 Difference]: Start difference. First operand 4098 states and 4391 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)