./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label19.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_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/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_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label19.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/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_08655068-358c-4561-82b3-f0d32ce2ed4a/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 dbab4b57592d1cd844f46032ce61618d4e076adc5adb242b34e740348fe0a295 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:09:55,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:09:55,762 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:09:55,768 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:09:55,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:09:55,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:09:55,804 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:09:55,804 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:09:55,805 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:09:55,806 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:09:55,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:09:55,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:09:55,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:09:55,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:09:55,811 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:09:55,812 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:09:55,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:09:55,813 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:09:55,813 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:09:55,813 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:09:55,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:09:55,818 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:09:55,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:09:55,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:09:55,820 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:09:55,820 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:09:55,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:09:55,821 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:09:55,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:09:55,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:09:55,822 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:09:55,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:09:55,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:55,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:09:55,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:09:55,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:09:55,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:09:55,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:09:55,824 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:09:55,824 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:09:55,826 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:09:55,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:09:55,827 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_08655068-358c-4561-82b3-f0d32ce2ed4a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbab4b57592d1cd844f46032ce61618d4e076adc5adb242b34e740348fe0a295 [2024-10-31 22:09:56,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:09:56,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:09:56,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:09:56,202 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:09:56,202 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:09:56,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/eca-rers2012/Problem03_label19.c Unable to find full path for "g++" [2024-10-31 22:09:58,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:09:58,569 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:09:58,571 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/sv-benchmarks/c/eca-rers2012/Problem03_label19.c [2024-10-31 22:09:58,593 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/data/6495a68d4/6a48777039e8429b809d5fd9374db3f1/FLAG900415d32 [2024-10-31 22:09:58,616 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/data/6495a68d4/6a48777039e8429b809d5fd9374db3f1 [2024-10-31 22:09:58,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:09:58,623 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:09:58,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:58,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:09:58,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:09:58,635 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:58" (1/1) ... [2024-10-31 22:09:58,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@759f5671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:58, skipping insertion in model container [2024-10-31 22:09:58,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:58" (1/1) ... [2024-10-31 22:09:58,766 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:09:59,527 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_08655068-358c-4561-82b3-f0d32ce2ed4a/sv-benchmarks/c/eca-rers2012/Problem03_label19.c[59475,59488] [2024-10-31 22:09:59,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:59,580 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:09:59,957 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_08655068-358c-4561-82b3-f0d32ce2ed4a/sv-benchmarks/c/eca-rers2012/Problem03_label19.c[59475,59488] [2024-10-31 22:09:59,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:59,989 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:09:59,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:59 WrapperNode [2024-10-31 22:09:59,989 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:59,990 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:59,991 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:09:59,991 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:09:59,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:59" (1/1) ... [2024-10-31 22:10:00,028 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:59" (1/1) ... [2024-10-31 22:10:00,144 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-31 22:10:00,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:00,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:10:00,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:10:00,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:10:00,157 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:59" (1/1) ... [2024-10-31 22:10:00,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:59" (1/1) ... [2024-10-31 22:10:00,181 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:59" (1/1) ... [2024-10-31 22:10:00,225 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 22:10:00,229 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:59" (1/1) ... [2024-10-31 22:10:00,229 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:59" (1/1) ... [2024-10-31 22:10:00,281 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:59" (1/1) ... [2024-10-31 22:10:00,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:59" (1/1) ... [2024-10-31 22:10:00,310 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:59" (1/1) ... [2024-10-31 22:10:00,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:59" (1/1) ... [2024-10-31 22:10:00,329 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:10:00,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:10:00,331 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:10:00,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:10:00,332 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:59" (1/1) ... [2024-10-31 22:10:00,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:00,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:00,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:00,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:10:00,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:10:00,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:10:00,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:10:00,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:10:00,510 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:10:00,512 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:02,973 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-31 22:10:02,973 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:02,992 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:02,992 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:10:02,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:02 BoogieIcfgContainer [2024-10-31 22:10:02,993 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:02,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:10:02,995 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:10:02,999 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:10:02,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:09:58" (1/3) ... [2024-10-31 22:10:03,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ce8e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:03, skipping insertion in model container [2024-10-31 22:10:03,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:59" (2/3) ... [2024-10-31 22:10:03,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ce8e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:03, skipping insertion in model container [2024-10-31 22:10:03,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:02" (3/3) ... [2024-10-31 22:10:03,002 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label19.c [2024-10-31 22:10:03,022 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:10:03,022 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:10:03,107 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:03,114 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;@1991b8bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:03,115 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:10:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 22:10:03,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-10-31 22:10:03,149 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:03,150 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:03,150 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:03,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:03,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1077687485, now seen corresponding path program 1 times [2024-10-31 22:10:03,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:03,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146345087] [2024-10-31 22:10:03,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:03,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:04,393 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 22:10:04,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:04,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146345087] [2024-10-31 22:10:04,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146345087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:04,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:04,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:04,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460358984] [2024-10-31 22:10:04,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:04,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:04,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:04,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:04,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:04,443 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 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 22:10:06,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:06,023 INFO L93 Difference]: Finished difference Result 857 states and 1498 transitions. [2024-10-31 22:10:06,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:06,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2024-10-31 22:10:06,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:06,040 INFO L225 Difference]: With dead ends: 857 [2024-10-31 22:10:06,040 INFO L226 Difference]: Without dead ends: 462 [2024-10-31 22:10:06,044 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 22:10:06,048 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 101 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:06,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 187 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-31 22:10:06,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-10-31 22:10:06,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2024-10-31 22:10:06,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.5381263616557734) internal successors, (706), 459 states have internal predecessors, (706), 0 states have call successors, (0), 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 22:10:06,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 706 transitions. [2024-10-31 22:10:06,154 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 706 transitions. Word has length 187 [2024-10-31 22:10:06,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:06,156 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 706 transitions. [2024-10-31 22:10:06,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 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 22:10:06,156 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 706 transitions. [2024-10-31 22:10:06,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-10-31 22:10:06,163 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:06,163 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:06,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:10:06,164 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:06,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:06,165 INFO L85 PathProgramCache]: Analyzing trace with hash 365635140, now seen corresponding path program 1 times [2024-10-31 22:10:06,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:06,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460835339] [2024-10-31 22:10:06,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:06,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:06,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:06,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:06,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460835339] [2024-10-31 22:10:06,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460835339] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:06,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:06,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:06,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642319002] [2024-10-31 22:10:06,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:06,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:06,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:06,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:06,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:06,682 INFO L87 Difference]: Start difference. First operand 460 states and 706 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 22:10:07,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:07,925 INFO L93 Difference]: Finished difference Result 1344 states and 2079 transitions. [2024-10-31 22:10:07,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:07,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 195 [2024-10-31 22:10:07,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:07,936 INFO L225 Difference]: With dead ends: 1344 [2024-10-31 22:10:07,936 INFO L226 Difference]: Without dead ends: 886 [2024-10-31 22:10:07,939 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 22:10:07,943 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:07,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-31 22:10:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-10-31 22:10:07,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 870. [2024-10-31 22:10:07,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5132336018411967) internal successors, (1315), 869 states have internal predecessors, (1315), 0 states have call successors, (0), 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 22:10:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1315 transitions. [2024-10-31 22:10:07,985 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1315 transitions. Word has length 195 [2024-10-31 22:10:07,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:07,986 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 1315 transitions. [2024-10-31 22:10:07,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 22:10:07,986 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1315 transitions. [2024-10-31 22:10:07,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-10-31 22:10:07,991 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:07,991 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:07,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:10:07,991 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:07,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:07,992 INFO L85 PathProgramCache]: Analyzing trace with hash 750887865, now seen corresponding path program 1 times [2024-10-31 22:10:07,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:07,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920481766] [2024-10-31 22:10:07,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:07,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-31 22:10:09,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:09,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920481766] [2024-10-31 22:10:09,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920481766] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:09,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:09,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:10:09,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705840779] [2024-10-31 22:10:09,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:09,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:09,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:09,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:09,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:09,221 INFO L87 Difference]: Start difference. First operand 870 states and 1315 transitions. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 22:10:10,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:10,809 INFO L93 Difference]: Finished difference Result 1884 states and 2886 transitions. [2024-10-31 22:10:10,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:10,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 202 [2024-10-31 22:10:10,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:10,819 INFO L225 Difference]: With dead ends: 1884 [2024-10-31 22:10:10,819 INFO L226 Difference]: Without dead ends: 842 [2024-10-31 22:10:10,822 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 22:10:10,824 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 299 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:10,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 47 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-31 22:10:10,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2024-10-31 22:10:10,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 842. [2024-10-31 22:10:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 1.3650416171224733) internal successors, (1148), 841 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:10,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1148 transitions. [2024-10-31 22:10:10,866 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1148 transitions. Word has length 202 [2024-10-31 22:10:10,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:10,867 INFO L471 AbstractCegarLoop]: Abstraction has 842 states and 1148 transitions. [2024-10-31 22:10:10,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 22:10:10,868 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1148 transitions. [2024-10-31 22:10:10,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-10-31 22:10:10,874 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:10,874 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:10,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:10:10,875 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:10,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:10,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2085657216, now seen corresponding path program 1 times [2024-10-31 22:10:10,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:10,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197844090] [2024-10-31 22:10:10,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:10,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:11,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:11,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197844090] [2024-10-31 22:10:11,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197844090] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:11,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:11,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:11,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496775345] [2024-10-31 22:10:11,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:11,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:11,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:11,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:11,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:11,264 INFO L87 Difference]: Start difference. First operand 842 states and 1148 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 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 22:10:12,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:12,382 INFO L93 Difference]: Finished difference Result 2506 states and 3421 transitions. [2024-10-31 22:10:12,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:12,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 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 210 [2024-10-31 22:10:12,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:12,390 INFO L225 Difference]: With dead ends: 2506 [2024-10-31 22:10:12,390 INFO L226 Difference]: Without dead ends: 1666 [2024-10-31 22:10:12,393 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 22:10:12,398 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 229 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:12,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 71 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-31 22:10:12,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2024-10-31 22:10:12,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1663. [2024-10-31 22:10:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 1.325511432009627) internal successors, (2203), 1662 states have internal predecessors, (2203), 0 states have call successors, (0), 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 22:10:12,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2203 transitions. [2024-10-31 22:10:12,449 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2203 transitions. Word has length 210 [2024-10-31 22:10:12,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:12,449 INFO L471 AbstractCegarLoop]: Abstraction has 1663 states and 2203 transitions. [2024-10-31 22:10:12,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 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 22:10:12,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2203 transitions. [2024-10-31 22:10:12,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-31 22:10:12,456 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:12,457 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:12,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:10:12,458 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:12,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:12,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2117214179, now seen corresponding path program 1 times [2024-10-31 22:10:12,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:12,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419361263] [2024-10-31 22:10:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:12,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:12,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:12,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419361263] [2024-10-31 22:10:12,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419361263] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:12,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:12,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:12,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445078821] [2024-10-31 22:10:12,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:12,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:12,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:12,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:12,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:10:12,920 INFO L87 Difference]: Start difference. First operand 1663 states and 2203 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 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 22:10:14,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:14,126 INFO L93 Difference]: Finished difference Result 4156 states and 5494 transitions. [2024-10-31 22:10:14,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:14,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2024-10-31 22:10:14,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:14,136 INFO L225 Difference]: With dead ends: 4156 [2024-10-31 22:10:14,137 INFO L226 Difference]: Without dead ends: 2495 [2024-10-31 22:10:14,139 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 22:10:14,141 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 203 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:14,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 57 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-31 22:10:14,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2024-10-31 22:10:14,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2492. [2024-10-31 22:10:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2491 states have (on average 1.3167402649538338) internal successors, (3280), 2491 states have internal predecessors, (3280), 0 states have call successors, (0), 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 22:10:14,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3280 transitions. [2024-10-31 22:10:14,209 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3280 transitions. Word has length 215 [2024-10-31 22:10:14,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:14,210 INFO L471 AbstractCegarLoop]: Abstraction has 2492 states and 3280 transitions. [2024-10-31 22:10:14,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 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 22:10:14,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3280 transitions. [2024-10-31 22:10:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-10-31 22:10:14,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:14,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:14,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:10:14,219 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:14,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:14,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1414138644, now seen corresponding path program 1 times [2024-10-31 22:10:14,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:14,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935262844] [2024-10-31 22:10:14,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:14,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:15,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:15,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935262844] [2024-10-31 22:10:15,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935262844] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:15,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:15,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:10:15,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403185929] [2024-10-31 22:10:15,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:15,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:15,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:15,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:15,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:15,276 INFO L87 Difference]: Start difference. First operand 2492 states and 3280 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 22:10:17,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:17,055 INFO L93 Difference]: Finished difference Result 6979 states and 9220 transitions. [2024-10-31 22:10:17,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:17,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 22:10:17,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:17,071 INFO L225 Difference]: With dead ends: 6979 [2024-10-31 22:10:17,071 INFO L226 Difference]: Without dead ends: 4141 [2024-10-31 22:10:17,074 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 22:10:17,075 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 194 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:17,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 121 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-31 22:10:17,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4141 states. [2024-10-31 22:10:17,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4141 to 4140. [2024-10-31 22:10:17,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4140 states, 4139 states have (on average 1.2974148345010872) internal successors, (5370), 4139 states have internal predecessors, (5370), 0 states have call successors, (0), 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 22:10:17,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4140 states to 4140 states and 5370 transitions. [2024-10-31 22:10:17,176 INFO L78 Accepts]: Start accepts. Automaton has 4140 states and 5370 transitions. Word has length 218 [2024-10-31 22:10:17,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:17,176 INFO L471 AbstractCegarLoop]: Abstraction has 4140 states and 5370 transitions. [2024-10-31 22:10:17,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 22:10:17,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4140 states and 5370 transitions. [2024-10-31 22:10:17,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-10-31 22:10:17,186 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:17,186 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:17,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:10:17,187 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:17,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:17,188 INFO L85 PathProgramCache]: Analyzing trace with hash -208924398, now seen corresponding path program 1 times [2024-10-31 22:10:17,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:17,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528590424] [2024-10-31 22:10:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:17,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:17,711 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:17,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:17,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528590424] [2024-10-31 22:10:17,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528590424] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:17,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23061109] [2024-10-31 22:10:17,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:17,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:17,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:17,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:17,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:10:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:17,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:10:17,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:18,226 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:10:18,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23061109] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:18,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:10:18,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-31 22:10:18,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731185579] [2024-10-31 22:10:18,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:18,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:18,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:18,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:18,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:10:18,229 INFO L87 Difference]: Start difference. First operand 4140 states and 5370 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 22:10:19,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:19,609 INFO L93 Difference]: Finished difference Result 14606 states and 18960 transitions. [2024-10-31 22:10:19,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:10:19,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2024-10-31 22:10:19,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:19,642 INFO L225 Difference]: With dead ends: 14606 [2024-10-31 22:10:19,642 INFO L226 Difference]: Without dead ends: 10468 [2024-10-31 22:10:19,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:10:19,649 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 491 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:19,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 294 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-31 22:10:19,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10468 states. [2024-10-31 22:10:19,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10468 to 10460. [2024-10-31 22:10:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10460 states, 10459 states have (on average 1.2783248876565638) internal successors, (13370), 10459 states have internal predecessors, (13370), 0 states have call successors, (0), 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 22:10:19,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10460 states to 10460 states and 13370 transitions. [2024-10-31 22:10:19,903 INFO L78 Accepts]: Start accepts. Automaton has 10460 states and 13370 transitions. Word has length 222 [2024-10-31 22:10:19,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:19,903 INFO L471 AbstractCegarLoop]: Abstraction has 10460 states and 13370 transitions. [2024-10-31 22:10:19,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 22:10:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 10460 states and 13370 transitions. [2024-10-31 22:10:19,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-10-31 22:10:19,920 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:19,920 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:19,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:10:20,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 22:10:20,122 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:20,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:20,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1207092737, now seen corresponding path program 1 times [2024-10-31 22:10:20,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:20,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684399815] [2024-10-31 22:10:20,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:20,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:20,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:20,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684399815] [2024-10-31 22:10:20,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684399815] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:20,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31993856] [2024-10-31 22:10:20,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:20,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:20,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:20,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:20,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:10:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:20,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:10:20,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-31 22:10:21,370 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:10:21,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31993856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:21,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:10:21,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-31 22:10:21,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395294396] [2024-10-31 22:10:21,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:21,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:21,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:21,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:21,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:21,377 INFO L87 Difference]: Start difference. First operand 10460 states and 13370 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 22:10:22,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:22,577 INFO L93 Difference]: Finished difference Result 20932 states and 26763 transitions. [2024-10-31 22:10:22,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:10:22,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 225 [2024-10-31 22:10:22,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:22,612 INFO L225 Difference]: With dead ends: 20932 [2024-10-31 22:10:22,612 INFO L226 Difference]: Without dead ends: 10474 [2024-10-31 22:10:22,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:22,623 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 37 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:22,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 299 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-31 22:10:22,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10474 states. [2024-10-31 22:10:22,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10474 to 10460. [2024-10-31 22:10:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10460 states, 10459 states have (on average 1.268381298403289) internal successors, (13266), 10459 states have internal predecessors, (13266), 0 states have call successors, (0), 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 22:10:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10460 states to 10460 states and 13266 transitions. [2024-10-31 22:10:22,849 INFO L78 Accepts]: Start accepts. Automaton has 10460 states and 13266 transitions. Word has length 225 [2024-10-31 22:10:22,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:22,850 INFO L471 AbstractCegarLoop]: Abstraction has 10460 states and 13266 transitions. [2024-10-31 22:10:22,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 22:10:22,850 INFO L276 IsEmpty]: Start isEmpty. Operand 10460 states and 13266 transitions. [2024-10-31 22:10:22,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-10-31 22:10:22,865 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:22,865 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:22,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:23,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:23,070 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:23,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:23,071 INFO L85 PathProgramCache]: Analyzing trace with hash 14269427, now seen corresponding path program 1 times [2024-10-31 22:10:23,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:23,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682696873] [2024-10-31 22:10:23,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:23,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:10:23,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:23,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682696873] [2024-10-31 22:10:23,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682696873] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:10:23,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110286144] [2024-10-31 22:10:23,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:23,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:10:23,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:23,630 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:10:23,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08655068-358c-4561-82b3-f0d32ce2ed4a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:10:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:23,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:10:23,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-31 22:10:23,863 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:10:23,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110286144] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:23,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:10:23,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-31 22:10:23,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870529518] [2024-10-31 22:10:23,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:23,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:10:23,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:23,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:10:23,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:23,866 INFO L87 Difference]: Start difference. First operand 10460 states and 13266 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)