./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1 --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 5e99154d55f7fd098c0e840b496605adea5c7214bf70234e7c54dceeadfa306b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:36:43,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:36:43,721 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:36:43,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:36:43,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:36:43,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:36:43,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:36:43,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:36:43,751 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:36:43,752 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:36:43,752 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:36:43,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:36:43,752 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:36:43,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:36:43,753 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:36:43,753 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:36:43,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:36:43,753 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:36:43,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:36:43,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:36:43,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:36:43,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:36:43,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:36:43,753 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:36:43,754 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:36:43,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:36:43,754 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:36:43,754 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:36:43,754 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:36:43,754 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:36:43,754 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:36:43,754 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:36:43,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:36:43,754 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:36:43,755 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:36:43,755 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:36:43,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:36:43,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:36:43,755 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:36:43,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:36:43,755 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:36:43,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:36:43,755 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:36:43,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:36:43,755 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:36:43,756 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:36:43,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:36:43,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:36:43,756 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1 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 -> 5e99154d55f7fd098c0e840b496605adea5c7214bf70234e7c54dceeadfa306b [2024-12-02 07:36:43,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:36:44,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:36:44,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:36:44,009 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:36:44,010 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:36:44,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2024-12-02 07:36:46,667 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/data/30be85532/0f6b7df2d2a74b8d89d2ceab7a544eb1/FLAG0d2fe92b6 [2024-12-02 07:36:46,873 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:36:46,873 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2024-12-02 07:36:46,883 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/data/30be85532/0f6b7df2d2a74b8d89d2ceab7a544eb1/FLAG0d2fe92b6 [2024-12-02 07:36:46,897 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/data/30be85532/0f6b7df2d2a74b8d89d2ceab7a544eb1 [2024-12-02 07:36:46,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:36:46,900 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:36:46,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:36:46,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:36:46,905 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:36:46,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:36:46" (1/1) ... [2024-12-02 07:36:46,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cdc875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:46, skipping insertion in model container [2024-12-02 07:36:46,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:36:46" (1/1) ... [2024-12-02 07:36:46,926 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:36:47,114 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c[12751,12764] [2024-12-02 07:36:47,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:36:47,125 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:36:47,178 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c[12751,12764] [2024-12-02 07:36:47,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:36:47,193 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:36:47,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:47 WrapperNode [2024-12-02 07:36:47,193 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:36:47,194 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:36:47,194 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:36:47,194 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:36:47,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:47" (1/1) ... [2024-12-02 07:36:47,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:47" (1/1) ... [2024-12-02 07:36:47,237 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 384 [2024-12-02 07:36:47,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:36:47,238 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:36:47,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:36:47,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:36:47,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:47" (1/1) ... [2024-12-02 07:36:47,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:47" (1/1) ... [2024-12-02 07:36:47,251 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:47" (1/1) ... [2024-12-02 07:36:47,266 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]. [2024-12-02 07:36:47,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:47" (1/1) ... [2024-12-02 07:36:47,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:47" (1/1) ... [2024-12-02 07:36:47,275 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:47" (1/1) ... [2024-12-02 07:36:47,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:47" (1/1) ... [2024-12-02 07:36:47,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:47" (1/1) ... [2024-12-02 07:36:47,285 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:47" (1/1) ... [2024-12-02 07:36:47,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:47" (1/1) ... [2024-12-02 07:36:47,290 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:36:47,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:36:47,291 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:36:47,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:36:47,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:47" (1/1) ... [2024-12-02 07:36:47,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:36:47,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:36:47,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:36:47,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:36:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:36:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:36:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:36:47,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:36:47,421 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:36:47,423 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:36:47,828 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-12-02 07:36:47,828 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:36:47,839 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:36:47,839 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 07:36:47,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:36:47 BoogieIcfgContainer [2024-12-02 07:36:47,839 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:36:47,841 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:36:47,841 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:36:47,846 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:36:47,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:36:46" (1/3) ... [2024-12-02 07:36:47,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e44fbaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:36:47, skipping insertion in model container [2024-12-02 07:36:47,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:36:47" (2/3) ... [2024-12-02 07:36:47,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e44fbaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:36:47, skipping insertion in model container [2024-12-02 07:36:47,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:36:47" (3/3) ... [2024-12-02 07:36:47,848 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c [2024-12-02 07:36:47,863 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:36:47,866 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c that has 1 procedures, 103 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:36:47,921 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:36:47,933 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;@772bb7fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:36:47,934 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:36:47,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 101 states have (on average 1.7425742574257426) internal successors, (176), 102 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:47,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-02 07:36:47,944 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:47,945 INFO L218 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] [2024-12-02 07:36:47,945 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:47,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:47,950 INFO L85 PathProgramCache]: Analyzing trace with hash 229907582, now seen corresponding path program 1 times [2024-12-02 07:36:47,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:47,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306264531] [2024-12-02 07:36:47,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:47,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:48,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:48,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306264531] [2024-12-02 07:36:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306264531] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:48,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:48,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:36:48,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38469022] [2024-12-02 07:36:48,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:48,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:36:48,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:48,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:36:48,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:36:48,193 INFO L87 Difference]: Start difference. First operand has 103 states, 101 states have (on average 1.7425742574257426) internal successors, (176), 102 states have internal predecessors, (176), 0 states have call successors, (0), 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 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:48,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:48,210 INFO L93 Difference]: Finished difference Result 169 states and 282 transitions. [2024-12-02 07:36:48,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:36:48,211 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-12-02 07:36:48,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:48,217 INFO L225 Difference]: With dead ends: 169 [2024-12-02 07:36:48,217 INFO L226 Difference]: Without dead ends: 99 [2024-12-02 07:36:48,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:36:48,222 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:48,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:36:48,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-12-02 07:36:48,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-12-02 07:36:48,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.7244897959183674) internal successors, (169), 98 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:48,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 169 transitions. [2024-12-02 07:36:48,255 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 169 transitions. Word has length 34 [2024-12-02 07:36:48,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:48,255 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 169 transitions. [2024-12-02 07:36:48,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:48,255 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 169 transitions. [2024-12-02 07:36:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-02 07:36:48,257 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:48,257 INFO L218 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] [2024-12-02 07:36:48,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:36:48,257 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:48,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:48,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1616110976, now seen corresponding path program 1 times [2024-12-02 07:36:48,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:48,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222390214] [2024-12-02 07:36:48,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:48,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:48,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:48,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:48,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222390214] [2024-12-02 07:36:48,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222390214] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:48,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:48,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:36:48,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287594099] [2024-12-02 07:36:48,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:48,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:36:48,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:48,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:36:48,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:36:48,473 INFO L87 Difference]: Start difference. First operand 99 states and 169 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:48,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:48,563 INFO L93 Difference]: Finished difference Result 164 states and 272 transitions. [2024-12-02 07:36:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:36:48,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-12-02 07:36:48,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:48,565 INFO L225 Difference]: With dead ends: 164 [2024-12-02 07:36:48,565 INFO L226 Difference]: Without dead ends: 99 [2024-12-02 07:36:48,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:36:48,566 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:48,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 631 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:36:48,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-12-02 07:36:48,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-12-02 07:36:48,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.3979591836734695) internal successors, (137), 98 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:48,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 137 transitions. [2024-12-02 07:36:48,573 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 137 transitions. Word has length 34 [2024-12-02 07:36:48,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:48,573 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 137 transitions. [2024-12-02 07:36:48,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:48,573 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 137 transitions. [2024-12-02 07:36:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 07:36:48,575 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:48,575 INFO L218 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] [2024-12-02 07:36:48,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:36:48,575 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:48,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:48,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1583552949, now seen corresponding path program 1 times [2024-12-02 07:36:48,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:48,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431023468] [2024-12-02 07:36:48,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:48,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:48,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:48,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431023468] [2024-12-02 07:36:48,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431023468] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:48,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:48,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:36:48,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722080290] [2024-12-02 07:36:48,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:48,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:36:48,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:48,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:36:48,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:48,712 INFO L87 Difference]: Start difference. First operand 99 states and 137 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:48,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:48,744 INFO L93 Difference]: Finished difference Result 213 states and 321 transitions. [2024-12-02 07:36:48,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:36:48,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2024-12-02 07:36:48,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:48,746 INFO L225 Difference]: With dead ends: 213 [2024-12-02 07:36:48,746 INFO L226 Difference]: Without dead ends: 152 [2024-12-02 07:36:48,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:48,747 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 82 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:48,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 300 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:36:48,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-12-02 07:36:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2024-12-02 07:36:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.476510067114094) internal successors, (220), 149 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 220 transitions. [2024-12-02 07:36:48,757 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 220 transitions. Word has length 65 [2024-12-02 07:36:48,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:48,758 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 220 transitions. [2024-12-02 07:36:48,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:48,758 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 220 transitions. [2024-12-02 07:36:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 07:36:48,759 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:48,760 INFO L218 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] [2024-12-02 07:36:48,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:36:48,760 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:48,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:48,761 INFO L85 PathProgramCache]: Analyzing trace with hash 2112096908, now seen corresponding path program 1 times [2024-12-02 07:36:48,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:48,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794325838] [2024-12-02 07:36:48,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:48,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:48,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:48,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794325838] [2024-12-02 07:36:48,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794325838] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:48,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:48,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:36:48,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226738546] [2024-12-02 07:36:48,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:48,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:36:48,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:48,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:36:48,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:48,871 INFO L87 Difference]: Start difference. First operand 150 states and 220 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:48,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:48,902 INFO L93 Difference]: Finished difference Result 358 states and 556 transitions. [2024-12-02 07:36:48,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:36:48,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2024-12-02 07:36:48,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:48,904 INFO L225 Difference]: With dead ends: 358 [2024-12-02 07:36:48,904 INFO L226 Difference]: Without dead ends: 246 [2024-12-02 07:36:48,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:48,906 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 78 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:48,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 297 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:36:48,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-12-02 07:36:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2024-12-02 07:36:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.5267489711934157) internal successors, (371), 243 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:48,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 371 transitions. [2024-12-02 07:36:48,919 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 371 transitions. Word has length 65 [2024-12-02 07:36:48,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:48,920 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 371 transitions. [2024-12-02 07:36:48,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:48,920 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 371 transitions. [2024-12-02 07:36:48,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 07:36:48,921 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:48,921 INFO L218 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] [2024-12-02 07:36:48,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:36:48,921 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:48,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:48,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1004439731, now seen corresponding path program 1 times [2024-12-02 07:36:48,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:48,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313231776] [2024-12-02 07:36:48,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:48,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:49,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:49,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:49,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313231776] [2024-12-02 07:36:49,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313231776] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:49,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:49,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:36:49,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630861785] [2024-12-02 07:36:49,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:49,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:36:49,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:49,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:36:49,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:36:49,144 INFO L87 Difference]: Start difference. First operand 244 states and 371 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:49,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:49,306 INFO L93 Difference]: Finished difference Result 1480 states and 2369 transitions. [2024-12-02 07:36:49,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:36:49,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2024-12-02 07:36:49,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:49,312 INFO L225 Difference]: With dead ends: 1480 [2024-12-02 07:36:49,312 INFO L226 Difference]: Without dead ends: 1274 [2024-12-02 07:36:49,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:36:49,314 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 1370 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:49,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 983 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:36:49,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2024-12-02 07:36:49,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 448. [2024-12-02 07:36:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.5548098434004474) internal successors, (695), 447 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:49,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 695 transitions. [2024-12-02 07:36:49,345 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 695 transitions. Word has length 65 [2024-12-02 07:36:49,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:49,345 INFO L471 AbstractCegarLoop]: Abstraction has 448 states and 695 transitions. [2024-12-02 07:36:49,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:49,345 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 695 transitions. [2024-12-02 07:36:49,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 07:36:49,346 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:49,346 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:36:49,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:36:49,347 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:49,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:49,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1456183872, now seen corresponding path program 1 times [2024-12-02 07:36:49,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:49,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987057715] [2024-12-02 07:36:49,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:49,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:49,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:49,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987057715] [2024-12-02 07:36:49,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987057715] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:49,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:49,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:36:49,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74841341] [2024-12-02 07:36:49,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:49,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:36:49,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:49,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:36:49,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:36:49,616 INFO L87 Difference]: Start difference. First operand 448 states and 695 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:49,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:49,645 INFO L93 Difference]: Finished difference Result 474 states and 728 transitions. [2024-12-02 07:36:49,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:36:49,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-12-02 07:36:49,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:49,649 INFO L225 Difference]: With dead ends: 474 [2024-12-02 07:36:49,649 INFO L226 Difference]: Without dead ends: 472 [2024-12-02 07:36:49,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:36:49,650 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:49,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 528 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:36:49,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-12-02 07:36:49,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2024-12-02 07:36:49,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.526539278131635) internal successors, (719), 471 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 719 transitions. [2024-12-02 07:36:49,667 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 719 transitions. Word has length 66 [2024-12-02 07:36:49,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:49,667 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 719 transitions. [2024-12-02 07:36:49,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:49,667 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 719 transitions. [2024-12-02 07:36:49,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 07:36:49,668 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:49,668 INFO L218 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] [2024-12-02 07:36:49,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:36:49,669 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:49,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:49,669 INFO L85 PathProgramCache]: Analyzing trace with hash -2139448443, now seen corresponding path program 1 times [2024-12-02 07:36:49,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:49,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328243904] [2024-12-02 07:36:49,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:49,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:49,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:49,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328243904] [2024-12-02 07:36:49,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328243904] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:49,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:49,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:36:49,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008694450] [2024-12-02 07:36:49,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:49,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:36:49,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:49,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:36:49,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:49,758 INFO L87 Difference]: Start difference. First operand 472 states and 719 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:49,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:49,788 INFO L93 Difference]: Finished difference Result 1280 states and 1981 transitions. [2024-12-02 07:36:49,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:36:49,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2024-12-02 07:36:49,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:49,791 INFO L225 Difference]: With dead ends: 1280 [2024-12-02 07:36:49,791 INFO L226 Difference]: Without dead ends: 846 [2024-12-02 07:36:49,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:49,792 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 63 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:49,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 233 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:36:49,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2024-12-02 07:36:49,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 844. [2024-12-02 07:36:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 1.531435349940688) internal successors, (1291), 843 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1291 transitions. [2024-12-02 07:36:49,827 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1291 transitions. Word has length 67 [2024-12-02 07:36:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:49,828 INFO L471 AbstractCegarLoop]: Abstraction has 844 states and 1291 transitions. [2024-12-02 07:36:49,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1291 transitions. [2024-12-02 07:36:49,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 07:36:49,829 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:49,829 INFO L218 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] [2024-12-02 07:36:49,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:36:49,829 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:49,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:49,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1722379268, now seen corresponding path program 1 times [2024-12-02 07:36:49,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:49,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5600438] [2024-12-02 07:36:49,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:49,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:49,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:49,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5600438] [2024-12-02 07:36:49,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5600438] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:49,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:49,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:36:49,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29889440] [2024-12-02 07:36:49,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:49,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:36:49,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:49,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:36:49,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:49,901 INFO L87 Difference]: Start difference. First operand 844 states and 1291 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:49,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:49,939 INFO L93 Difference]: Finished difference Result 1651 states and 2545 transitions. [2024-12-02 07:36:49,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:36:49,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2024-12-02 07:36:49,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:49,943 INFO L225 Difference]: With dead ends: 1651 [2024-12-02 07:36:49,943 INFO L226 Difference]: Without dead ends: 1217 [2024-12-02 07:36:49,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:49,944 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 86 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:49,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 310 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:36:49,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2024-12-02 07:36:49,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1215. [2024-12-02 07:36:49,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1214 states have (on average 1.527182866556837) internal successors, (1854), 1214 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:49,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1854 transitions. [2024-12-02 07:36:49,985 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1854 transitions. Word has length 67 [2024-12-02 07:36:49,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:49,985 INFO L471 AbstractCegarLoop]: Abstraction has 1215 states and 1854 transitions. [2024-12-02 07:36:49,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:49,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1854 transitions. [2024-12-02 07:36:49,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 07:36:49,986 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:49,986 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:36:49,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:36:49,986 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:49,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:49,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1362464473, now seen corresponding path program 1 times [2024-12-02 07:36:49,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:49,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088957834] [2024-12-02 07:36:49,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:49,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:50,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:50,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088957834] [2024-12-02 07:36:50,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088957834] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:50,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:50,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:36:50,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770825021] [2024-12-02 07:36:50,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:50,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:36:50,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:50,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:36:50,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:50,054 INFO L87 Difference]: Start difference. First operand 1215 states and 1854 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:50,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:50,112 INFO L93 Difference]: Finished difference Result 3371 states and 5144 transitions. [2024-12-02 07:36:50,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:36:50,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-12-02 07:36:50,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:50,119 INFO L225 Difference]: With dead ends: 3371 [2024-12-02 07:36:50,119 INFO L226 Difference]: Without dead ends: 2197 [2024-12-02 07:36:50,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:50,122 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 70 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:50,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 291 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:36:50,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2197 states. [2024-12-02 07:36:50,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2197 to 2195. [2024-12-02 07:36:50,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 2194 states have (on average 1.5068368277119417) internal successors, (3306), 2194 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:50,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3306 transitions. [2024-12-02 07:36:50,208 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3306 transitions. Word has length 68 [2024-12-02 07:36:50,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:50,208 INFO L471 AbstractCegarLoop]: Abstraction has 2195 states and 3306 transitions. [2024-12-02 07:36:50,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:50,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3306 transitions. [2024-12-02 07:36:50,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 07:36:50,209 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:50,209 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:36:50,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:36:50,210 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:50,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:50,210 INFO L85 PathProgramCache]: Analyzing trace with hash -438224455, now seen corresponding path program 1 times [2024-12-02 07:36:50,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:50,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052283444] [2024-12-02 07:36:50,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:50,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:50,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052283444] [2024-12-02 07:36:50,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052283444] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:50,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:50,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:36:50,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398275861] [2024-12-02 07:36:50,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:50,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:36:50,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:50,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:36:50,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:50,281 INFO L87 Difference]: Start difference. First operand 2195 states and 3306 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:50,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:50,373 INFO L93 Difference]: Finished difference Result 6119 states and 9164 transitions. [2024-12-02 07:36:50,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:36:50,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-12-02 07:36:50,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:50,387 INFO L225 Difference]: With dead ends: 6119 [2024-12-02 07:36:50,387 INFO L226 Difference]: Without dead ends: 3965 [2024-12-02 07:36:50,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:50,390 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 74 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:50,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 304 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:36:50,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3965 states. [2024-12-02 07:36:50,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3965 to 3963. [2024-12-02 07:36:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3963 states, 3962 states have (on average 1.4765270065623421) internal successors, (5850), 3962 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:50,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3963 states to 3963 states and 5850 transitions. [2024-12-02 07:36:50,521 INFO L78 Accepts]: Start accepts. Automaton has 3963 states and 5850 transitions. Word has length 68 [2024-12-02 07:36:50,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:50,522 INFO L471 AbstractCegarLoop]: Abstraction has 3963 states and 5850 transitions. [2024-12-02 07:36:50,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:50,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3963 states and 5850 transitions. [2024-12-02 07:36:50,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 07:36:50,525 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:50,525 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:36:50,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 07:36:50,525 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:50,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:50,525 INFO L85 PathProgramCache]: Analyzing trace with hash -128024743, now seen corresponding path program 1 times [2024-12-02 07:36:50,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:50,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496262384] [2024-12-02 07:36:50,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:50,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:50,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:50,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496262384] [2024-12-02 07:36:50,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496262384] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:50,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:50,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:36:50,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023055749] [2024-12-02 07:36:50,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:50,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:36:50,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:50,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:36:50,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:50,677 INFO L87 Difference]: Start difference. First operand 3963 states and 5850 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:50,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:50,759 INFO L93 Difference]: Finished difference Result 7887 states and 11660 transitions. [2024-12-02 07:36:50,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:36:50,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-12-02 07:36:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:50,767 INFO L225 Difference]: With dead ends: 7887 [2024-12-02 07:36:50,768 INFO L226 Difference]: Without dead ends: 3965 [2024-12-02 07:36:50,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:50,771 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 67 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:50,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 297 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:36:50,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3965 states. [2024-12-02 07:36:50,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3965 to 3963. [2024-12-02 07:36:50,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3963 states, 3962 states have (on average 1.464411913175164) internal successors, (5802), 3962 states have internal predecessors, (5802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3963 states to 3963 states and 5802 transitions. [2024-12-02 07:36:50,853 INFO L78 Accepts]: Start accepts. Automaton has 3963 states and 5802 transitions. Word has length 95 [2024-12-02 07:36:50,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:50,853 INFO L471 AbstractCegarLoop]: Abstraction has 3963 states and 5802 transitions. [2024-12-02 07:36:50,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:50,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3963 states and 5802 transitions. [2024-12-02 07:36:50,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 07:36:50,855 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:50,855 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:36:50,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 07:36:50,855 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:50,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:50,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1613048232, now seen corresponding path program 1 times [2024-12-02 07:36:50,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:50,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777915208] [2024-12-02 07:36:50,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:50,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:50,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:50,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777915208] [2024-12-02 07:36:50,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777915208] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:50,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:50,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:36:50,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815271265] [2024-12-02 07:36:50,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:50,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:36:50,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:50,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:36:50,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:50,952 INFO L87 Difference]: Start difference. First operand 3963 states and 5802 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:50,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:50,997 INFO L93 Difference]: Finished difference Result 5927 states and 8684 transitions. [2024-12-02 07:36:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:36:50,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-12-02 07:36:50,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:51,002 INFO L225 Difference]: With dead ends: 5927 [2024-12-02 07:36:51,002 INFO L226 Difference]: Without dead ends: 2005 [2024-12-02 07:36:51,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:51,005 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 61 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:51,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 278 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:36:51,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2024-12-02 07:36:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 2003. [2024-12-02 07:36:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 1.4475524475524475) internal successors, (2898), 2002 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:51,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 2898 transitions. [2024-12-02 07:36:51,044 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 2898 transitions. Word has length 95 [2024-12-02 07:36:51,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:51,044 INFO L471 AbstractCegarLoop]: Abstraction has 2003 states and 2898 transitions. [2024-12-02 07:36:51,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:51,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 2898 transitions. [2024-12-02 07:36:51,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 07:36:51,046 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:51,046 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:36:51,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 07:36:51,046 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:51,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:51,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1226799913, now seen corresponding path program 1 times [2024-12-02 07:36:51,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:51,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139776910] [2024-12-02 07:36:51,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:51,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:36:51,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:51,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139776910] [2024-12-02 07:36:51,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139776910] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:36:51,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320788204] [2024-12-02 07:36:51,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:51,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:36:51,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:36:51,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:36:51,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:36:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:51,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 07:36:51,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:36:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:52,587 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:36:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:53,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320788204] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:36:53,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:36:53,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 8] total 17 [2024-12-02 07:36:53,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694156982] [2024-12-02 07:36:53,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:36:53,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 07:36:53,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:53,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 07:36:53,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2024-12-02 07:36:53,562 INFO L87 Difference]: Start difference. First operand 2003 states and 2898 transitions. Second operand has 17 states, 17 states have (on average 15.882352941176471) internal successors, (270), 17 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:54,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:54,611 INFO L93 Difference]: Finished difference Result 8672 states and 12433 transitions. [2024-12-02 07:36:54,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 07:36:54,612 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.882352941176471) internal successors, (270), 17 states have internal predecessors, (270), 0 states have call successors, (0), 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 95 [2024-12-02 07:36:54,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:54,627 INFO L225 Difference]: With dead ends: 8672 [2024-12-02 07:36:54,628 INFO L226 Difference]: Without dead ends: 6710 [2024-12-02 07:36:54,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=291, Invalid=701, Unknown=0, NotChecked=0, Total=992 [2024-12-02 07:36:54,632 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 2541 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2541 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:54,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2541 Valid, 1341 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:36:54,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6710 states. [2024-12-02 07:36:54,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6710 to 6266. [2024-12-02 07:36:54,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6266 states, 6265 states have (on average 1.425219473264166) internal successors, (8929), 6265 states have internal predecessors, (8929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:54,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6266 states to 6266 states and 8929 transitions. [2024-12-02 07:36:54,862 INFO L78 Accepts]: Start accepts. Automaton has 6266 states and 8929 transitions. Word has length 95 [2024-12-02 07:36:54,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:54,862 INFO L471 AbstractCegarLoop]: Abstraction has 6266 states and 8929 transitions. [2024-12-02 07:36:54,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.882352941176471) internal successors, (270), 17 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:54,862 INFO L276 IsEmpty]: Start isEmpty. Operand 6266 states and 8929 transitions. [2024-12-02 07:36:54,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 07:36:54,864 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:54,864 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:36:54,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:36:55,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 07:36:55,065 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:55,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:55,065 INFO L85 PathProgramCache]: Analyzing trace with hash 575825246, now seen corresponding path program 1 times [2024-12-02 07:36:55,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:55,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091689862] [2024-12-02 07:36:55,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:55,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:36:55,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:55,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091689862] [2024-12-02 07:36:55,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091689862] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:55,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:55,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:36:55,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574013187] [2024-12-02 07:36:55,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:55,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:36:55,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:55,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:36:55,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:36:55,254 INFO L87 Difference]: Start difference. First operand 6266 states and 8929 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:55,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:55,687 INFO L93 Difference]: Finished difference Result 21871 states and 31339 transitions. [2024-12-02 07:36:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:36:55,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 96 [2024-12-02 07:36:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:55,729 INFO L225 Difference]: With dead ends: 21871 [2024-12-02 07:36:55,729 INFO L226 Difference]: Without dead ends: 18749 [2024-12-02 07:36:55,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:36:55,735 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 771 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:55,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1302 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:36:55,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18749 states. [2024-12-02 07:36:56,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18749 to 9316. [2024-12-02 07:36:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9316 states, 9315 states have (on average 1.4207192699946323) internal successors, (13234), 9315 states have internal predecessors, (13234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9316 states to 9316 states and 13234 transitions. [2024-12-02 07:36:56,101 INFO L78 Accepts]: Start accepts. Automaton has 9316 states and 13234 transitions. Word has length 96 [2024-12-02 07:36:56,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:56,101 INFO L471 AbstractCegarLoop]: Abstraction has 9316 states and 13234 transitions. [2024-12-02 07:36:56,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 9316 states and 13234 transitions. [2024-12-02 07:36:56,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 07:36:56,103 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:56,103 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:36:56,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 07:36:56,103 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:56,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:56,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1025666592, now seen corresponding path program 1 times [2024-12-02 07:36:56,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:56,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106060311] [2024-12-02 07:36:56,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:56,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 07:36:56,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:56,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106060311] [2024-12-02 07:36:56,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106060311] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:56,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:56,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:36:56,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868614416] [2024-12-02 07:36:56,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:56,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:36:56,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:56,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:36:56,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:36:56,280 INFO L87 Difference]: Start difference. First operand 9316 states and 13234 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:56,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:56,878 INFO L93 Difference]: Finished difference Result 24913 states and 35636 transitions. [2024-12-02 07:36:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:36:56,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 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 96 [2024-12-02 07:36:56,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:56,928 INFO L225 Difference]: With dead ends: 24913 [2024-12-02 07:36:56,928 INFO L226 Difference]: Without dead ends: 21805 [2024-12-02 07:36:56,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:36:56,935 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 772 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:56,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1208 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:36:56,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21805 states. [2024-12-02 07:36:57,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21805 to 12323. [2024-12-02 07:36:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12323 states, 12322 states have (on average 1.4189254991072877) internal successors, (17484), 12322 states have internal predecessors, (17484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:57,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12323 states to 12323 states and 17484 transitions. [2024-12-02 07:36:57,368 INFO L78 Accepts]: Start accepts. Automaton has 12323 states and 17484 transitions. Word has length 96 [2024-12-02 07:36:57,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:57,368 INFO L471 AbstractCegarLoop]: Abstraction has 12323 states and 17484 transitions. [2024-12-02 07:36:57,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:57,368 INFO L276 IsEmpty]: Start isEmpty. Operand 12323 states and 17484 transitions. [2024-12-02 07:36:57,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 07:36:57,370 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:57,370 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:36:57,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 07:36:57,370 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:57,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:57,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1589041182, now seen corresponding path program 1 times [2024-12-02 07:36:57,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:57,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979436588] [2024-12-02 07:36:57,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:57,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 07:36:57,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:57,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979436588] [2024-12-02 07:36:57,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979436588] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:57,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:57,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:36:57,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243616268] [2024-12-02 07:36:57,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:57,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:36:57,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:57,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:36:57,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:36:57,544 INFO L87 Difference]: Start difference. First operand 12323 states and 17484 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:58,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:58,081 INFO L93 Difference]: Finished difference Result 27904 states and 39859 transitions. [2024-12-02 07:36:58,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:36:58,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 96 [2024-12-02 07:36:58,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:58,101 INFO L225 Difference]: With dead ends: 27904 [2024-12-02 07:36:58,101 INFO L226 Difference]: Without dead ends: 24796 [2024-12-02 07:36:58,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:36:58,107 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 824 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:58,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 1126 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:36:58,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24796 states. [2024-12-02 07:36:58,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24796 to 15321. [2024-12-02 07:36:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15321 states, 15320 states have (on average 1.4176240208877284) internal successors, (21718), 15320 states have internal predecessors, (21718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15321 states to 15321 states and 21718 transitions. [2024-12-02 07:36:58,517 INFO L78 Accepts]: Start accepts. Automaton has 15321 states and 21718 transitions. Word has length 96 [2024-12-02 07:36:58,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:58,517 INFO L471 AbstractCegarLoop]: Abstraction has 15321 states and 21718 transitions. [2024-12-02 07:36:58,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 15321 states and 21718 transitions. [2024-12-02 07:36:58,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 07:36:58,519 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:58,519 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:36:58,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 07:36:58,519 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:58,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:58,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1614343516, now seen corresponding path program 1 times [2024-12-02 07:36:58,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:58,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782707285] [2024-12-02 07:36:58,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:58,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 07:36:58,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:58,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782707285] [2024-12-02 07:36:58,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782707285] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:58,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:58,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:36:58,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159872324] [2024-12-02 07:36:58,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:58,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:36:58,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:58,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:36:58,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:36:58,730 INFO L87 Difference]: Start difference. First operand 15321 states and 21718 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:59,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:36:59,510 INFO L93 Difference]: Finished difference Result 30896 states and 44079 transitions. [2024-12-02 07:36:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:36:59,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 96 [2024-12-02 07:36:59,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:36:59,531 INFO L225 Difference]: With dead ends: 30896 [2024-12-02 07:36:59,531 INFO L226 Difference]: Without dead ends: 27774 [2024-12-02 07:36:59,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:36:59,538 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 908 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:36:59,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 1148 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:36:59,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27774 states. [2024-12-02 07:36:59,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27774 to 18341. [2024-12-02 07:36:59,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18341 states, 18340 states have (on average 1.416248636859324) internal successors, (25974), 18340 states have internal predecessors, (25974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18341 states to 18341 states and 25974 transitions. [2024-12-02 07:36:59,987 INFO L78 Accepts]: Start accepts. Automaton has 18341 states and 25974 transitions. Word has length 96 [2024-12-02 07:36:59,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:36:59,988 INFO L471 AbstractCegarLoop]: Abstraction has 18341 states and 25974 transitions. [2024-12-02 07:36:59,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:36:59,988 INFO L276 IsEmpty]: Start isEmpty. Operand 18341 states and 25974 transitions. [2024-12-02 07:36:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 07:36:59,989 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:36:59,989 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:36:59,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 07:36:59,990 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:36:59,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:59,990 INFO L85 PathProgramCache]: Analyzing trace with hash 501001830, now seen corresponding path program 1 times [2024-12-02 07:36:59,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:59,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296018614] [2024-12-02 07:36:59,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:59,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:37:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:00,096 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 07:37:00,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:37:00,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296018614] [2024-12-02 07:37:00,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296018614] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:37:00,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:37:00,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:37:00,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172906964] [2024-12-02 07:37:00,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:37:00,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:37:00,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:37:00,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:37:00,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:37:00,098 INFO L87 Difference]: Start difference. First operand 18341 states and 25974 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:37:00,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:37:00,669 INFO L93 Difference]: Finished difference Result 33888 states and 48291 transitions. [2024-12-02 07:37:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:37:00,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-12-02 07:37:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:37:00,691 INFO L225 Difference]: With dead ends: 33888 [2024-12-02 07:37:00,691 INFO L226 Difference]: Without dead ends: 30766 [2024-12-02 07:37:00,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:37:00,698 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 802 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:37:00,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1293 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:37:00,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30766 states. [2024-12-02 07:37:01,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30766 to 21333. [2024-12-02 07:37:01,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21333 states, 21332 states have (on average 1.415057191074442) internal successors, (30186), 21332 states have internal predecessors, (30186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:37:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21333 states to 21333 states and 30186 transitions. [2024-12-02 07:37:01,187 INFO L78 Accepts]: Start accepts. Automaton has 21333 states and 30186 transitions. Word has length 96 [2024-12-02 07:37:01,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:37:01,187 INFO L471 AbstractCegarLoop]: Abstraction has 21333 states and 30186 transitions. [2024-12-02 07:37:01,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:37:01,187 INFO L276 IsEmpty]: Start isEmpty. Operand 21333 states and 30186 transitions. [2024-12-02 07:37:01,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 07:37:01,189 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:37:01,189 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:37:01,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 07:37:01,189 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:37:01,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:37:01,190 INFO L85 PathProgramCache]: Analyzing trace with hash -959235711, now seen corresponding path program 1 times [2024-12-02 07:37:01,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:37:01,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115830664] [2024-12-02 07:37:01,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:01,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:37:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:37:01,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:37:01,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115830664] [2024-12-02 07:37:01,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115830664] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:37:01,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554399033] [2024-12-02 07:37:01,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:01,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:37:01,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:37:01,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:37:01,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:37:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:01,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 07:37:01,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:37:02,349 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:37:02,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:37:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:37:03,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554399033] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:37:03,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:37:03,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-12-02 07:37:03,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546725443] [2024-12-02 07:37:03,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:37:03,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 07:37:03,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:37:03,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 07:37:03,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-12-02 07:37:03,592 INFO L87 Difference]: Start difference. First operand 21333 states and 30186 transitions. Second operand has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 22 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:37:05,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:37:05,427 INFO L93 Difference]: Finished difference Result 86550 states and 122580 transitions. [2024-12-02 07:37:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 07:37:05,428 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 22 states have internal predecessors, (237), 0 states have call successors, (0), 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 99 [2024-12-02 07:37:05,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:37:05,474 INFO L225 Difference]: With dead ends: 86550 [2024-12-02 07:37:05,474 INFO L226 Difference]: Without dead ends: 65551 [2024-12-02 07:37:05,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1030, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 07:37:05,488 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 1585 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:37:05,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 1004 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:37:05,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65551 states. [2024-12-02 07:37:06,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65551 to 48754. [2024-12-02 07:37:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48754 states, 48753 states have (on average 1.4058006686767994) internal successors, (68537), 48753 states have internal predecessors, (68537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:37:06,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48754 states to 48754 states and 68537 transitions. [2024-12-02 07:37:06,679 INFO L78 Accepts]: Start accepts. Automaton has 48754 states and 68537 transitions. Word has length 99 [2024-12-02 07:37:06,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:37:06,679 INFO L471 AbstractCegarLoop]: Abstraction has 48754 states and 68537 transitions. [2024-12-02 07:37:06,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 22 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:37:06,679 INFO L276 IsEmpty]: Start isEmpty. Operand 48754 states and 68537 transitions. [2024-12-02 07:37:06,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 07:37:06,680 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:37:06,681 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:37:06,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:37:06,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:37:06,881 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:37:06,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:37:06,881 INFO L85 PathProgramCache]: Analyzing trace with hash 695721477, now seen corresponding path program 1 times [2024-12-02 07:37:06,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:37:06,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175673393] [2024-12-02 07:37:06,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:06,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:37:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:37:07,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:37:07,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175673393] [2024-12-02 07:37:07,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175673393] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:37:07,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478970975] [2024-12-02 07:37:07,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:07,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:37:07,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:37:07,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:37:07,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:37:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:07,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 07:37:07,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:37:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:37:08,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:37:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:37:09,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478970975] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:37:09,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:37:09,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 32 [2024-12-02 07:37:09,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327572190] [2024-12-02 07:37:09,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:37:09,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 07:37:09,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:37:09,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 07:37:09,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2024-12-02 07:37:09,809 INFO L87 Difference]: Start difference. First operand 48754 states and 68537 transitions. Second operand has 32 states, 32 states have (on average 8.84375) internal successors, (283), 32 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:37:34,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:37:34,748 INFO L93 Difference]: Finished difference Result 903806 states and 1289077 transitions. [2024-12-02 07:37:34,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2024-12-02 07:37:34,748 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.84375) internal successors, (283), 32 states have internal predecessors, (283), 0 states have call successors, (0), 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 99 [2024-12-02 07:37:34,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:37:35,665 INFO L225 Difference]: With dead ends: 903806 [2024-12-02 07:37:35,665 INFO L226 Difference]: Without dead ends: 855115 [2024-12-02 07:37:35,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23052 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=8119, Invalid=48763, Unknown=0, NotChecked=0, Total=56882 [2024-12-02 07:37:35,828 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 9301 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9301 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:37:35,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9301 Valid, 2635 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2408 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 07:37:36,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855115 states. [2024-12-02 07:37:52,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855115 to 536946. [2024-12-02 07:37:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536946 states, 536945 states have (on average 1.3947797260427046) internal successors, (748920), 536945 states have internal predecessors, (748920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:37:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536946 states to 536946 states and 748920 transitions. [2024-12-02 07:37:53,390 INFO L78 Accepts]: Start accepts. Automaton has 536946 states and 748920 transitions. Word has length 99 [2024-12-02 07:37:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:37:53,390 INFO L471 AbstractCegarLoop]: Abstraction has 536946 states and 748920 transitions. [2024-12-02 07:37:53,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.84375) internal successors, (283), 32 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:37:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 536946 states and 748920 transitions. [2024-12-02 07:37:53,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 07:37:53,397 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:37:53,397 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:37:53,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 07:37:53,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-12-02 07:37:53,598 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:37:53,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:37:53,598 INFO L85 PathProgramCache]: Analyzing trace with hash 774811202, now seen corresponding path program 1 times [2024-12-02 07:37:53,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:37:53,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740466492] [2024-12-02 07:37:53,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:53,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:37:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:37:53,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:37:53,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740466492] [2024-12-02 07:37:53,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740466492] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:37:53,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:37:53,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:37:53,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453110216] [2024-12-02 07:37:53,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:37:53,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:37:53,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:37:53,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:37:53,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:37:53,696 INFO L87 Difference]: Start difference. First operand 536946 states and 748920 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:38:01,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:38:01,147 INFO L93 Difference]: Finished difference Result 805720 states and 1124034 transitions. [2024-12-02 07:38:01,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:38:01,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2024-12-02 07:38:01,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:38:01,461 INFO L225 Difference]: With dead ends: 805720 [2024-12-02 07:38:01,461 INFO L226 Difference]: Without dead ends: 271117 [2024-12-02 07:38:01,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:38:01,814 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 47 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:38:01,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 271 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:38:01,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271117 states. [2024-12-02 07:38:08,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271117 to 265655. [2024-12-02 07:38:09,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265655 states, 265654 states have (on average 1.3773780933093422) internal successors, (365906), 265654 states have internal predecessors, (365906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:38:09,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265655 states to 265655 states and 365906 transitions. [2024-12-02 07:38:09,555 INFO L78 Accepts]: Start accepts. Automaton has 265655 states and 365906 transitions. Word has length 99 [2024-12-02 07:38:09,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:38:09,556 INFO L471 AbstractCegarLoop]: Abstraction has 265655 states and 365906 transitions. [2024-12-02 07:38:09,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:38:09,556 INFO L276 IsEmpty]: Start isEmpty. Operand 265655 states and 365906 transitions. [2024-12-02 07:38:09,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 07:38:09,558 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:38:09,558 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:38:09,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 07:38:09,558 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:38:09,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:38:09,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1078953062, now seen corresponding path program 1 times [2024-12-02 07:38:09,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:38:09,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354388605] [2024-12-02 07:38:09,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:38:09,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:38:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:38:09,883 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:38:09,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:38:09,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354388605] [2024-12-02 07:38:09,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354388605] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:38:09,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631574500] [2024-12-02 07:38:09,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:38:09,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:38:09,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:38:09,886 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:38:09,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3949bd78-10b9-43f9-8c5b-26e0621c5f66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:38:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:38:10,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 07:38:10,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:38:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:38:11,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:38:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:38:13,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631574500] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:38:13,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:38:13,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 12] total 32 [2024-12-02 07:38:13,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877460165] [2024-12-02 07:38:13,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:38:13,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 07:38:13,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:38:13,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 07:38:13,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2024-12-02 07:38:13,146 INFO L87 Difference]: Start difference. First operand 265655 states and 365906 transitions. Second operand has 32 states, 32 states have (on average 8.21875) internal successors, (263), 32 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:40:03,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:40:03,671 INFO L93 Difference]: Finished difference Result 5219427 states and 7174872 transitions. [2024-12-02 07:40:03,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 330 states. [2024-12-02 07:40:03,671 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.21875) internal successors, (263), 32 states have internal predecessors, (263), 0 states have call successors, (0), 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 100 [2024-12-02 07:40:03,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:40:10,485 INFO L225 Difference]: With dead ends: 5219427 [2024-12-02 07:40:10,485 INFO L226 Difference]: Without dead ends: 4953825 [2024-12-02 07:40:11,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 358 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56991 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=16501, Invalid=112739, Unknown=0, NotChecked=0, Total=129240 [2024-12-02 07:40:11,236 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 6822 mSDsluCounter, 5212 mSDsCounter, 0 mSdLazyCounter, 6825 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6822 SdHoareTripleChecker+Valid, 5442 SdHoareTripleChecker+Invalid, 6984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 6825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:40:11,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6822 Valid, 5442 Invalid, 6984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 6825 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-12-02 07:40:13,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953825 states.