./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_dec.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_dec.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB --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 64bit --witnessprinter.graph.data.programhash 3b0071c78088f9c96f862cb661d2ce94895d7fb3336b3cc889e5292b345efcdd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:50:07,680 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:50:07,783 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-27 19:50:07,794 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:50:07,795 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:50:07,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:50:07,835 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:50:07,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:50:07,835 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:50:07,836 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:50:07,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:50:07,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:50:07,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:50:07,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:50:07,837 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:50:07,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:50:07,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:50:07,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:50:07,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:50:07,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:50:07,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:50:07,838 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:50:07,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:50:07,838 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:50:07,839 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:50:07,839 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:50:07,839 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:07,839 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:07,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:07,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:07,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:50:07,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:07,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:07,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:07,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:07,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:50:07,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:50:07,841 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:50:07,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:50:07,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:50:07,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:50:07,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:50:07,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:50:07,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:50:07,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:50:07,842 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_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b0071c78088f9c96f862cb661d2ce94895d7fb3336b3cc889e5292b345efcdd [2024-11-27 19:50:08,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:50:08,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:50:08,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:50:08,221 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:50:08,222 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:50:08,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_dec.c [2024-11-27 19:50:11,281 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/data/421a61cf6/93684fd4a66c4455aaab86f644fcb307/FLAG1af837505 [2024-11-27 19:50:11,641 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:50:11,642 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_dec.c [2024-11-27 19:50:11,655 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/data/421a61cf6/93684fd4a66c4455aaab86f644fcb307/FLAG1af837505 [2024-11-27 19:50:11,677 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/data/421a61cf6/93684fd4a66c4455aaab86f644fcb307 [2024-11-27 19:50:11,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:50:11,685 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:50:11,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:11,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:50:11,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:50:11,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:11" (1/1) ... [2024-11-27 19:50:11,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef5b45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:11, skipping insertion in model container [2024-11-27 19:50:11,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:11" (1/1) ... [2024-11-27 19:50:11,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:50:11,916 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_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_dec.c[1251,1264] [2024-11-27 19:50:12,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:12,222 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:50:12,232 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_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.Huffman_dec.c[1251,1264] [2024-11-27 19:50:12,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:12,415 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:50:12,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:12 WrapperNode [2024-11-27 19:50:12,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:12,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:12,418 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:50:12,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:50:12,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:12" (1/1) ... [2024-11-27 19:50:12,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:12" (1/1) ... [2024-11-27 19:50:12,690 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1334 [2024-11-27 19:50:12,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:12,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:50:12,694 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:50:12,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:50:12,705 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:12" (1/1) ... [2024-11-27 19:50:12,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:12" (1/1) ... [2024-11-27 19:50:12,736 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:12" (1/1) ... [2024-11-27 19:50:12,798 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 19:50:12,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:12" (1/1) ... [2024-11-27 19:50:12,802 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:12" (1/1) ... [2024-11-27 19:50:12,847 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:12" (1/1) ... [2024-11-27 19:50:12,850 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:12" (1/1) ... [2024-11-27 19:50:12,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:12" (1/1) ... [2024-11-27 19:50:12,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:12" (1/1) ... [2024-11-27 19:50:12,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:12" (1/1) ... [2024-11-27 19:50:12,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:50:12,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:50:12,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:50:12,934 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:50:12,938 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:12" (1/1) ... [2024-11-27 19:50:12,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:12,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:12,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:50:12,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:50:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:50:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:50:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:50:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:50:13,328 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:50:13,330 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:50:15,816 INFO L? ?]: Removed 791 outVars from TransFormulas that were not future-live. [2024-11-27 19:50:15,816 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:50:15,841 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:50:15,841 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 19:50:15,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:15 BoogieIcfgContainer [2024-11-27 19:50:15,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:50:15,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:50:15,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:50:15,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:50:15,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:50:11" (1/3) ... [2024-11-27 19:50:15,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c6d30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:15, skipping insertion in model container [2024-11-27 19:50:15,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:12" (2/3) ... [2024-11-27 19:50:15,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c6d30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:15, skipping insertion in model container [2024-11-27 19:50:15,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:15" (3/3) ... [2024-11-27 19:50:15,853 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.Huffman_dec.c [2024-11-27 19:50:15,870 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:50:15,872 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.Huffman_dec.c that has 1 procedures, 290 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 19:50:15,937 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:50:15,950 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;@226fcc64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:50:15,950 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 19:50:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 290 states, 288 states have (on average 1.4965277777777777) internal successors, (431), 289 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:15,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-27 19:50:15,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:15,964 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, 1, 1, 1] [2024-11-27 19:50:15,965 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:15,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:15,970 INFO L85 PathProgramCache]: Analyzing trace with hash -666599551, now seen corresponding path program 1 times [2024-11-27 19:50:15,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:15,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224741834] [2024-11-27 19:50:15,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:15,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:17,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:17,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224741834] [2024-11-27 19:50:17,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224741834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:17,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:17,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:17,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256537988] [2024-11-27 19:50:17,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:17,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:17,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:17,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:17,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:17,977 INFO L87 Difference]: Start difference. First operand has 290 states, 288 states have (on average 1.4965277777777777) internal successors, (431), 289 states have internal predecessors, (431), 0 states have call successors, (0), 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 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:18,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:18,094 INFO L93 Difference]: Finished difference Result 569 states and 849 transitions. [2024-11-27 19:50:18,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:50:18,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-27 19:50:18,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:18,108 INFO L225 Difference]: With dead ends: 569 [2024-11-27 19:50:18,108 INFO L226 Difference]: Without dead ends: 289 [2024-11-27 19:50:18,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:18,115 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 0 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:18,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1269 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:18,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-27 19:50:18,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2024-11-27 19:50:18,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.4895833333333333) internal successors, (429), 288 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 429 transitions. [2024-11-27 19:50:18,183 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 429 transitions. Word has length 71 [2024-11-27 19:50:18,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:18,184 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 429 transitions. [2024-11-27 19:50:18,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:18,185 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 429 transitions. [2024-11-27 19:50:18,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-27 19:50:18,186 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:18,187 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, 1, 1, 1, 1] [2024-11-27 19:50:18,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 19:50:18,187 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:18,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:18,189 INFO L85 PathProgramCache]: Analyzing trace with hash 811945981, now seen corresponding path program 1 times [2024-11-27 19:50:18,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:18,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547760428] [2024-11-27 19:50:18,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:18,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:19,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:19,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547760428] [2024-11-27 19:50:19,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547760428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:19,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:19,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:19,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792231705] [2024-11-27 19:50:19,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:19,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:19,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:19,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:19,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:19,072 INFO L87 Difference]: Start difference. First operand 289 states and 429 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:19,153 INFO L93 Difference]: Finished difference Result 570 states and 847 transitions. [2024-11-27 19:50:19,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:50:19,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-27 19:50:19,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:19,156 INFO L225 Difference]: With dead ends: 570 [2024-11-27 19:50:19,156 INFO L226 Difference]: Without dead ends: 291 [2024-11-27 19:50:19,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:19,162 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 0 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:19,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1265 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:19,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-27 19:50:19,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2024-11-27 19:50:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.486206896551724) internal successors, (431), 290 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 431 transitions. [2024-11-27 19:50:19,188 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 431 transitions. Word has length 72 [2024-11-27 19:50:19,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:19,191 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 431 transitions. [2024-11-27 19:50:19,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:19,192 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 431 transitions. [2024-11-27 19:50:19,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-27 19:50:19,195 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:19,195 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, 1, 1, 1, 1, 1] [2024-11-27 19:50:19,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 19:50:19,196 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:19,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:19,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1697443878, now seen corresponding path program 1 times [2024-11-27 19:50:19,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:19,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693901735] [2024-11-27 19:50:19,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:19,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:21,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:21,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693901735] [2024-11-27 19:50:21,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693901735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:21,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:21,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:50:21,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551204258] [2024-11-27 19:50:21,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:21,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:21,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:21,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:21,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:21,360 INFO L87 Difference]: Start difference. First operand 291 states and 431 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:21,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:21,491 INFO L93 Difference]: Finished difference Result 574 states and 851 transitions. [2024-11-27 19:50:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:50:21,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-27 19:50:21,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:21,494 INFO L225 Difference]: With dead ends: 574 [2024-11-27 19:50:21,494 INFO L226 Difference]: Without dead ends: 293 [2024-11-27 19:50:21,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:50:21,499 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 365 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:21,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1684 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-27 19:50:21,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2024-11-27 19:50:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.4828767123287672) internal successors, (433), 292 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 433 transitions. [2024-11-27 19:50:21,521 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 433 transitions. Word has length 73 [2024-11-27 19:50:21,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:21,521 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 433 transitions. [2024-11-27 19:50:21,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:21,522 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 433 transitions. [2024-11-27 19:50:21,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-27 19:50:21,527 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:21,527 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, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:21,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 19:50:21,527 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:21,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:21,528 INFO L85 PathProgramCache]: Analyzing trace with hash -172265436, now seen corresponding path program 1 times [2024-11-27 19:50:21,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:21,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358772319] [2024-11-27 19:50:21,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:21,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:34,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:34,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358772319] [2024-11-27 19:50:34,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358772319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:34,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:34,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:34,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615047119] [2024-11-27 19:50:34,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:34,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:34,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:34,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:34,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:34,243 INFO L87 Difference]: Start difference. First operand 293 states and 433 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:35,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:35,304 INFO L93 Difference]: Finished difference Result 576 states and 852 transitions. [2024-11-27 19:50:35,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:50:35,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-27 19:50:35,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:35,308 INFO L225 Difference]: With dead ends: 576 [2024-11-27 19:50:35,308 INFO L226 Difference]: Without dead ends: 293 [2024-11-27 19:50:35,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:35,309 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 365 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:35,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 493 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 19:50:35,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-27 19:50:35,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2024-11-27 19:50:35,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.4794520547945205) internal successors, (432), 292 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:35,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 432 transitions. [2024-11-27 19:50:35,332 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 432 transitions. Word has length 74 [2024-11-27 19:50:35,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:35,333 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 432 transitions. [2024-11-27 19:50:35,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:35,333 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 432 transitions. [2024-11-27 19:50:35,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-27 19:50:35,334 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:35,335 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:35,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 19:50:35,335 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:35,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:35,335 INFO L85 PathProgramCache]: Analyzing trace with hash -725914505, now seen corresponding path program 1 times [2024-11-27 19:50:35,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:35,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910693672] [2024-11-27 19:50:35,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:35,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:05,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:05,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910693672] [2024-11-27 19:51:05,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910693672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:05,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:05,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2024-11-27 19:51:05,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674408074] [2024-11-27 19:51:05,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:05,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-27 19:51:05,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:05,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-27 19:51:05,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=3054, Unknown=0, NotChecked=0, Total=3192 [2024-11-27 19:51:05,962 INFO L87 Difference]: Start difference. First operand 293 states and 432 transitions. Second operand has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:23,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:23,536 INFO L93 Difference]: Finished difference Result 2008 states and 2985 transitions. [2024-11-27 19:51:23,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-27 19:51:23,537 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-27 19:51:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:23,548 INFO L225 Difference]: With dead ends: 2008 [2024-11-27 19:51:23,548 INFO L226 Difference]: Without dead ends: 1725 [2024-11-27 19:51:23,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2107 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=1702, Invalid=10288, Unknown=0, NotChecked=0, Total=11990 [2024-11-27 19:51:23,555 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 10608 mSDsluCounter, 18313 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10608 SdHoareTripleChecker+Valid, 18703 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:23,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10608 Valid, 18703 Invalid, 2140 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2140 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-27 19:51:23,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2024-11-27 19:51:23,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 347. [2024-11-27 19:51:23,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.4797687861271676) internal successors, (512), 346 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 512 transitions. [2024-11-27 19:51:23,577 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 512 transitions. Word has length 75 [2024-11-27 19:51:23,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:23,578 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 512 transitions. [2024-11-27 19:51:23,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 512 transitions. [2024-11-27 19:51:23,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:23,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:23,580 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:23,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 19:51:23,581 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:23,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:23,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1865222228, now seen corresponding path program 1 times [2024-11-27 19:51:23,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:23,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079869656] [2024-11-27 19:51:23,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:23,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:23,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:23,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079869656] [2024-11-27 19:51:23,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079869656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:23,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:23,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:23,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961644660] [2024-11-27 19:51:23,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:23,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:23,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:23,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:23,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:23,923 INFO L87 Difference]: Start difference. First operand 347 states and 512 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:24,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:24,125 INFO L93 Difference]: Finished difference Result 875 states and 1289 transitions. [2024-11-27 19:51:24,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:24,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:24,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:24,129 INFO L225 Difference]: With dead ends: 875 [2024-11-27 19:51:24,129 INFO L226 Difference]: Without dead ends: 538 [2024-11-27 19:51:24,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:24,131 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 790 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:24,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:51:24,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-27 19:51:24,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 389. [2024-11-27 19:51:24,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.4768041237113403) internal successors, (573), 388 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:24,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 573 transitions. [2024-11-27 19:51:24,149 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 573 transitions. Word has length 76 [2024-11-27 19:51:24,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:24,149 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 573 transitions. [2024-11-27 19:51:24,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 573 transitions. [2024-11-27 19:51:24,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:24,151 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:24,151 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:24,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 19:51:24,152 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:24,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:24,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2572111, now seen corresponding path program 1 times [2024-11-27 19:51:24,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:24,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247631443] [2024-11-27 19:51:24,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:24,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:24,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:24,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:24,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247631443] [2024-11-27 19:51:24,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247631443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:24,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:24,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:24,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902401664] [2024-11-27 19:51:24,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:24,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:24,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:24,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:24,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:24,485 INFO L87 Difference]: Start difference. First operand 389 states and 573 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:24,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:24,683 INFO L93 Difference]: Finished difference Result 873 states and 1284 transitions. [2024-11-27 19:51:24,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:24,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:24,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:24,687 INFO L225 Difference]: With dead ends: 873 [2024-11-27 19:51:24,687 INFO L226 Difference]: Without dead ends: 536 [2024-11-27 19:51:24,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:24,692 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 772 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:24,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:51:24,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2024-11-27 19:51:24,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 417. [2024-11-27 19:51:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.4735576923076923) internal successors, (613), 416 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:24,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 613 transitions. [2024-11-27 19:51:24,725 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 613 transitions. Word has length 76 [2024-11-27 19:51:24,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:24,726 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 613 transitions. [2024-11-27 19:51:24,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 613 transitions. [2024-11-27 19:51:24,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:24,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:24,727 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:24,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 19:51:24,727 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:24,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:24,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1360033252, now seen corresponding path program 1 times [2024-11-27 19:51:24,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:24,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74790996] [2024-11-27 19:51:24,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:24,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:25,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:25,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:25,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74790996] [2024-11-27 19:51:25,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74790996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:25,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:25,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:25,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225687048] [2024-11-27 19:51:25,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:25,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:25,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:25,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:25,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:25,084 INFO L87 Difference]: Start difference. First operand 417 states and 613 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:25,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:25,268 INFO L93 Difference]: Finished difference Result 871 states and 1279 transitions. [2024-11-27 19:51:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:25,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:25,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:25,271 INFO L225 Difference]: With dead ends: 871 [2024-11-27 19:51:25,271 INFO L226 Difference]: Without dead ends: 534 [2024-11-27 19:51:25,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:25,273 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 742 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:25,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:51:25,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-27 19:51:25,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 481. [2024-11-27 19:51:25,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.4729166666666667) internal successors, (707), 480 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:25,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 707 transitions. [2024-11-27 19:51:25,289 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 707 transitions. Word has length 76 [2024-11-27 19:51:25,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:25,290 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 707 transitions. [2024-11-27 19:51:25,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:25,290 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 707 transitions. [2024-11-27 19:51:25,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:25,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:25,291 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:25,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 19:51:25,291 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:25,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:25,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1838716088, now seen corresponding path program 1 times [2024-11-27 19:51:25,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:25,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262314210] [2024-11-27 19:51:25,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:25,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:25,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:25,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:25,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262314210] [2024-11-27 19:51:25,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262314210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:25,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:25,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:25,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397184474] [2024-11-27 19:51:25,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:25,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:25,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:25,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:25,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:25,590 INFO L87 Difference]: Start difference. First operand 481 states and 707 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:25,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:25,792 INFO L93 Difference]: Finished difference Result 869 states and 1274 transitions. [2024-11-27 19:51:25,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:25,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:25,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:25,795 INFO L225 Difference]: With dead ends: 869 [2024-11-27 19:51:25,799 INFO L226 Difference]: Without dead ends: 532 [2024-11-27 19:51:25,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:25,801 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 726 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:25,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:51:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2024-11-27 19:51:25,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 503. [2024-11-27 19:51:25,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 1.4701195219123506) internal successors, (738), 502 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 738 transitions. [2024-11-27 19:51:25,821 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 738 transitions. Word has length 76 [2024-11-27 19:51:25,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:25,822 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 738 transitions. [2024-11-27 19:51:25,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:25,822 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 738 transitions. [2024-11-27 19:51:25,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:25,823 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:25,823 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:25,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 19:51:25,824 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:25,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:25,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1589391729, now seen corresponding path program 1 times [2024-11-27 19:51:25,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:25,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579065576] [2024-11-27 19:51:25,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:25,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:26,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:26,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579065576] [2024-11-27 19:51:26,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579065576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:26,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:26,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:26,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842811275] [2024-11-27 19:51:26,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:26,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:26,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:26,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:26,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:26,196 INFO L87 Difference]: Start difference. First operand 503 states and 738 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:26,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:26,405 INFO L93 Difference]: Finished difference Result 871 states and 1274 transitions. [2024-11-27 19:51:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:26,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:26,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:26,409 INFO L225 Difference]: With dead ends: 871 [2024-11-27 19:51:26,409 INFO L226 Difference]: Without dead ends: 530 [2024-11-27 19:51:26,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:26,411 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 720 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:26,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:51:26,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-27 19:51:26,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 501. [2024-11-27 19:51:26,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.466) internal successors, (733), 500 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:26,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 733 transitions. [2024-11-27 19:51:26,430 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 733 transitions. Word has length 76 [2024-11-27 19:51:26,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:26,431 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 733 transitions. [2024-11-27 19:51:26,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:26,431 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 733 transitions. [2024-11-27 19:51:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:26,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:26,432 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:26,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 19:51:26,432 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:26,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:26,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1788115990, now seen corresponding path program 1 times [2024-11-27 19:51:26,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:26,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406098721] [2024-11-27 19:51:26,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:26,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:26,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:26,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406098721] [2024-11-27 19:51:26,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406098721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:26,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:26,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:26,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611970787] [2024-11-27 19:51:26,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:26,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:26,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:26,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:26,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:26,906 INFO L87 Difference]: Start difference. First operand 501 states and 733 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:27,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:27,084 INFO L93 Difference]: Finished difference Result 871 states and 1271 transitions. [2024-11-27 19:51:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:27,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:27,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:27,087 INFO L225 Difference]: With dead ends: 871 [2024-11-27 19:51:27,087 INFO L226 Difference]: Without dead ends: 528 [2024-11-27 19:51:27,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:27,088 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 714 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:27,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:27,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-27 19:51:27,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 499. [2024-11-27 19:51:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.461847389558233) internal successors, (728), 498 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:27,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 728 transitions. [2024-11-27 19:51:27,106 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 728 transitions. Word has length 76 [2024-11-27 19:51:27,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:27,106 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 728 transitions. [2024-11-27 19:51:27,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:27,106 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 728 transitions. [2024-11-27 19:51:27,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:27,109 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:27,109 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:27,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 19:51:27,110 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:27,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:27,110 INFO L85 PathProgramCache]: Analyzing trace with hash 577758173, now seen corresponding path program 1 times [2024-11-27 19:51:27,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:27,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702514311] [2024-11-27 19:51:27,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:27,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:27,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:27,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702514311] [2024-11-27 19:51:27,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702514311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:27,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:27,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:27,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131497522] [2024-11-27 19:51:27,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:27,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:27,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:27,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:27,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:27,442 INFO L87 Difference]: Start difference. First operand 499 states and 728 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:27,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:27,621 INFO L93 Difference]: Finished difference Result 871 states and 1268 transitions. [2024-11-27 19:51:27,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:27,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:27,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:27,624 INFO L225 Difference]: With dead ends: 871 [2024-11-27 19:51:27,624 INFO L226 Difference]: Without dead ends: 526 [2024-11-27 19:51:27,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:27,626 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 708 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:27,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:51:27,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-11-27 19:51:27,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 497. [2024-11-27 19:51:27,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.4576612903225807) internal successors, (723), 496 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:27,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 723 transitions. [2024-11-27 19:51:27,642 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 723 transitions. Word has length 76 [2024-11-27 19:51:27,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:27,642 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 723 transitions. [2024-11-27 19:51:27,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:27,642 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 723 transitions. [2024-11-27 19:51:27,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:27,646 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:27,646 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:27,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 19:51:27,646 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:27,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:27,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1507107371, now seen corresponding path program 1 times [2024-11-27 19:51:27,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:27,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749959195] [2024-11-27 19:51:27,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:27,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:27,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:27,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749959195] [2024-11-27 19:51:27,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749959195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:27,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:27,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:27,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409158482] [2024-11-27 19:51:27,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:27,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:27,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:27,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:27,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:27,988 INFO L87 Difference]: Start difference. First operand 497 states and 723 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:28,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:28,164 INFO L93 Difference]: Finished difference Result 873 states and 1267 transitions. [2024-11-27 19:51:28,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:28,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:28,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:28,167 INFO L225 Difference]: With dead ends: 873 [2024-11-27 19:51:28,167 INFO L226 Difference]: Without dead ends: 524 [2024-11-27 19:51:28,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:28,170 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 704 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:28,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:28,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-11-27 19:51:28,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 495. [2024-11-27 19:51:28,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.4534412955465588) internal successors, (718), 494 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:28,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 718 transitions. [2024-11-27 19:51:28,186 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 718 transitions. Word has length 76 [2024-11-27 19:51:28,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:28,187 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 718 transitions. [2024-11-27 19:51:28,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:28,187 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 718 transitions. [2024-11-27 19:51:28,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:28,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:28,188 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:28,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 19:51:28,189 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:28,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:28,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1111414962, now seen corresponding path program 1 times [2024-11-27 19:51:28,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:28,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062906468] [2024-11-27 19:51:28,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:28,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:28,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:28,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062906468] [2024-11-27 19:51:28,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062906468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:28,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:28,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:28,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581254515] [2024-11-27 19:51:28,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:28,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:28,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:28,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:28,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:28,672 INFO L87 Difference]: Start difference. First operand 495 states and 718 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:28,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:28,863 INFO L93 Difference]: Finished difference Result 873 states and 1264 transitions. [2024-11-27 19:51:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:28,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:28,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:28,865 INFO L225 Difference]: With dead ends: 873 [2024-11-27 19:51:28,865 INFO L226 Difference]: Without dead ends: 522 [2024-11-27 19:51:28,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:28,868 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 698 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:28,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:51:28,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-27 19:51:28,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 493. [2024-11-27 19:51:28,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.4491869918699187) internal successors, (713), 492 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:28,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 713 transitions. [2024-11-27 19:51:28,885 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 713 transitions. Word has length 76 [2024-11-27 19:51:28,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:28,885 INFO L471 AbstractCegarLoop]: Abstraction has 493 states and 713 transitions. [2024-11-27 19:51:28,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:28,885 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 713 transitions. [2024-11-27 19:51:28,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:28,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:28,890 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:28,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 19:51:28,890 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:28,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:28,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1191868039, now seen corresponding path program 1 times [2024-11-27 19:51:28,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:28,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357972360] [2024-11-27 19:51:28,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:28,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:29,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:29,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:29,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357972360] [2024-11-27 19:51:29,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357972360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:29,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:29,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:29,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427660823] [2024-11-27 19:51:29,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:29,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:29,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:29,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:29,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:29,257 INFO L87 Difference]: Start difference. First operand 493 states and 713 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:29,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:29,426 INFO L93 Difference]: Finished difference Result 873 states and 1261 transitions. [2024-11-27 19:51:29,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:29,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:29,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:29,429 INFO L225 Difference]: With dead ends: 873 [2024-11-27 19:51:29,429 INFO L226 Difference]: Without dead ends: 520 [2024-11-27 19:51:29,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:29,430 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 692 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:29,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-11-27 19:51:29,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 491. [2024-11-27 19:51:29,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 490 states have (on average 1.4448979591836735) internal successors, (708), 490 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:29,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 708 transitions. [2024-11-27 19:51:29,446 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 708 transitions. Word has length 76 [2024-11-27 19:51:29,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:29,446 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 708 transitions. [2024-11-27 19:51:29,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:29,447 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 708 transitions. [2024-11-27 19:51:29,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:29,448 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:29,448 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:29,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 19:51:29,448 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:29,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:29,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1556292736, now seen corresponding path program 1 times [2024-11-27 19:51:29,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:29,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823762129] [2024-11-27 19:51:29,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:29,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:29,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:29,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823762129] [2024-11-27 19:51:29,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823762129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:29,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:29,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:29,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170180222] [2024-11-27 19:51:29,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:29,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:29,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:29,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:29,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:29,782 INFO L87 Difference]: Start difference. First operand 491 states and 708 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:29,983 INFO L93 Difference]: Finished difference Result 873 states and 1258 transitions. [2024-11-27 19:51:29,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:29,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:29,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:29,986 INFO L225 Difference]: With dead ends: 873 [2024-11-27 19:51:29,986 INFO L226 Difference]: Without dead ends: 518 [2024-11-27 19:51:29,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:29,989 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 686 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:29,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:51:29,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-27 19:51:30,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 489. [2024-11-27 19:51:30,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.4405737704918034) internal successors, (703), 488 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:30,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 703 transitions. [2024-11-27 19:51:30,006 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 703 transitions. Word has length 76 [2024-11-27 19:51:30,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:30,007 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 703 transitions. [2024-11-27 19:51:30,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:30,007 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 703 transitions. [2024-11-27 19:51:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:30,008 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:30,009 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:30,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 19:51:30,009 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:30,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:30,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1133910471, now seen corresponding path program 1 times [2024-11-27 19:51:30,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:30,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350386557] [2024-11-27 19:51:30,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:30,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:30,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:30,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350386557] [2024-11-27 19:51:30,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350386557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:30,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:30,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:30,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802798579] [2024-11-27 19:51:30,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:30,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:30,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:30,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:30,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:30,377 INFO L87 Difference]: Start difference. First operand 489 states and 703 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:30,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:30,575 INFO L93 Difference]: Finished difference Result 873 states and 1255 transitions. [2024-11-27 19:51:30,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:30,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:30,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:30,577 INFO L225 Difference]: With dead ends: 873 [2024-11-27 19:51:30,578 INFO L226 Difference]: Without dead ends: 516 [2024-11-27 19:51:30,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:30,579 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 680 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:30,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:51:30,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-11-27 19:51:30,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 487. [2024-11-27 19:51:30,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.4362139917695473) internal successors, (698), 486 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:30,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 698 transitions. [2024-11-27 19:51:30,600 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 698 transitions. Word has length 76 [2024-11-27 19:51:30,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:30,600 INFO L471 AbstractCegarLoop]: Abstraction has 487 states and 698 transitions. [2024-11-27 19:51:30,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:30,601 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 698 transitions. [2024-11-27 19:51:30,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:30,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:30,602 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:30,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 19:51:30,603 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:30,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1048520370, now seen corresponding path program 1 times [2024-11-27 19:51:30,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:30,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630539796] [2024-11-27 19:51:30,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:30,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:31,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:31,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630539796] [2024-11-27 19:51:31,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630539796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:31,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:31,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:31,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239826114] [2024-11-27 19:51:31,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:31,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:31,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:31,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:31,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:31,013 INFO L87 Difference]: Start difference. First operand 487 states and 698 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:31,166 INFO L93 Difference]: Finished difference Result 873 states and 1252 transitions. [2024-11-27 19:51:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:31,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:31,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:31,168 INFO L225 Difference]: With dead ends: 873 [2024-11-27 19:51:31,168 INFO L226 Difference]: Without dead ends: 514 [2024-11-27 19:51:31,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:31,169 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 674 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:31,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:31,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-11-27 19:51:31,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 485. [2024-11-27 19:51:31,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.4318181818181819) internal successors, (693), 484 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 693 transitions. [2024-11-27 19:51:31,190 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 693 transitions. Word has length 76 [2024-11-27 19:51:31,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:31,191 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 693 transitions. [2024-11-27 19:51:31,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:31,191 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 693 transitions. [2024-11-27 19:51:31,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:31,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:31,193 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:31,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 19:51:31,194 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:31,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:31,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1874449173, now seen corresponding path program 1 times [2024-11-27 19:51:31,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:31,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480859719] [2024-11-27 19:51:31,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:31,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:31,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:31,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480859719] [2024-11-27 19:51:31,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480859719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:31,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:31,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:31,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225760946] [2024-11-27 19:51:31,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:31,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:31,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:31,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:31,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:31,544 INFO L87 Difference]: Start difference. First operand 485 states and 693 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:31,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:31,728 INFO L93 Difference]: Finished difference Result 873 states and 1249 transitions. [2024-11-27 19:51:31,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:31,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:31,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:31,731 INFO L225 Difference]: With dead ends: 873 [2024-11-27 19:51:31,731 INFO L226 Difference]: Without dead ends: 512 [2024-11-27 19:51:31,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:31,732 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 668 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:31,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:51:31,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-27 19:51:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 483. [2024-11-27 19:51:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4273858921161826) internal successors, (688), 482 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 688 transitions. [2024-11-27 19:51:31,748 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 688 transitions. Word has length 76 [2024-11-27 19:51:31,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:31,748 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 688 transitions. [2024-11-27 19:51:31,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 688 transitions. [2024-11-27 19:51:31,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:31,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:31,749 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:31,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 19:51:31,750 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:31,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:31,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1939568412, now seen corresponding path program 1 times [2024-11-27 19:51:31,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:31,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916659005] [2024-11-27 19:51:31,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:31,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:32,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:32,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916659005] [2024-11-27 19:51:32,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916659005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:32,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:32,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:32,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121105251] [2024-11-27 19:51:32,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:32,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:32,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:32,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:32,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:32,080 INFO L87 Difference]: Start difference. First operand 483 states and 688 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:32,236 INFO L93 Difference]: Finished difference Result 873 states and 1246 transitions. [2024-11-27 19:51:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:32,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:32,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:32,239 INFO L225 Difference]: With dead ends: 873 [2024-11-27 19:51:32,239 INFO L226 Difference]: Without dead ends: 510 [2024-11-27 19:51:32,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:32,240 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 662 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:32,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:32,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-11-27 19:51:32,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 481. [2024-11-27 19:51:32,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.4229166666666666) internal successors, (683), 480 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:32,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 683 transitions. [2024-11-27 19:51:32,252 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 683 transitions. Word has length 76 [2024-11-27 19:51:32,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:32,253 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 683 transitions. [2024-11-27 19:51:32,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:32,253 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 683 transitions. [2024-11-27 19:51:32,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:32,254 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:32,254 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:32,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 19:51:32,254 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:32,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:32,255 INFO L85 PathProgramCache]: Analyzing trace with hash 94647651, now seen corresponding path program 1 times [2024-11-27 19:51:32,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:32,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064835743] [2024-11-27 19:51:32,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:32,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:32,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:32,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064835743] [2024-11-27 19:51:32,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064835743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:32,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:32,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:32,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379701251] [2024-11-27 19:51:32,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:32,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:32,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:32,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:32,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:32,528 INFO L87 Difference]: Start difference. First operand 481 states and 683 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:32,684 INFO L93 Difference]: Finished difference Result 873 states and 1243 transitions. [2024-11-27 19:51:32,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:32,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:32,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:32,686 INFO L225 Difference]: With dead ends: 873 [2024-11-27 19:51:32,686 INFO L226 Difference]: Without dead ends: 508 [2024-11-27 19:51:32,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:32,688 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 656 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:32,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:32,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2024-11-27 19:51:32,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 479. [2024-11-27 19:51:32,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.4184100418410042) internal successors, (678), 478 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:32,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 678 transitions. [2024-11-27 19:51:32,702 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 678 transitions. Word has length 76 [2024-11-27 19:51:32,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:32,702 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 678 transitions. [2024-11-27 19:51:32,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:32,703 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 678 transitions. [2024-11-27 19:51:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:32,703 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:32,704 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:32,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 19:51:32,704 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:32,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash 947289578, now seen corresponding path program 1 times [2024-11-27 19:51:32,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:32,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902700086] [2024-11-27 19:51:32,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:32,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:32,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:32,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902700086] [2024-11-27 19:51:32,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902700086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:32,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:32,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:32,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937604664] [2024-11-27 19:51:32,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:32,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:32,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:32,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:32,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:32,945 INFO L87 Difference]: Start difference. First operand 479 states and 678 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:33,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:33,104 INFO L93 Difference]: Finished difference Result 873 states and 1240 transitions. [2024-11-27 19:51:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:33,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:33,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:33,107 INFO L225 Difference]: With dead ends: 873 [2024-11-27 19:51:33,108 INFO L226 Difference]: Without dead ends: 506 [2024-11-27 19:51:33,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:33,110 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 650 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:33,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:33,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-11-27 19:51:33,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 477. [2024-11-27 19:51:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.4138655462184875) internal successors, (673), 476 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:33,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 673 transitions. [2024-11-27 19:51:33,122 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 673 transitions. Word has length 76 [2024-11-27 19:51:33,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:33,122 INFO L471 AbstractCegarLoop]: Abstraction has 477 states and 673 transitions. [2024-11-27 19:51:33,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:33,123 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 673 transitions. [2024-11-27 19:51:33,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:33,123 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:33,124 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:33,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 19:51:33,124 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:33,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:33,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2008378808, now seen corresponding path program 1 times [2024-11-27 19:51:33,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:33,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343255278] [2024-11-27 19:51:33,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:33,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:33,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:33,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343255278] [2024-11-27 19:51:33,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343255278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:33,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:33,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:33,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523738368] [2024-11-27 19:51:33,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:33,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:33,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:33,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:33,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:33,431 INFO L87 Difference]: Start difference. First operand 477 states and 673 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:33,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:33,582 INFO L93 Difference]: Finished difference Result 875 states and 1239 transitions. [2024-11-27 19:51:33,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:33,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:33,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:33,584 INFO L225 Difference]: With dead ends: 875 [2024-11-27 19:51:33,584 INFO L226 Difference]: Without dead ends: 504 [2024-11-27 19:51:33,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:33,585 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 646 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:33,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:33,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-11-27 19:51:33,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 475. [2024-11-27 19:51:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 1.409282700421941) internal successors, (668), 474 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:33,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 668 transitions. [2024-11-27 19:51:33,601 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 668 transitions. Word has length 76 [2024-11-27 19:51:33,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:33,601 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 668 transitions. [2024-11-27 19:51:33,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:33,601 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 668 transitions. [2024-11-27 19:51:33,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:33,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:33,602 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:33,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 19:51:33,603 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:33,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:33,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1796928767, now seen corresponding path program 1 times [2024-11-27 19:51:33,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:33,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363934265] [2024-11-27 19:51:33,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:33,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:33,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:33,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363934265] [2024-11-27 19:51:33,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363934265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:33,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:33,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:33,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481054129] [2024-11-27 19:51:33,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:33,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:33,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:33,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:33,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:33,955 INFO L87 Difference]: Start difference. First operand 475 states and 668 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:34,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:34,093 INFO L93 Difference]: Finished difference Result 875 states and 1236 transitions. [2024-11-27 19:51:34,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:34,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:34,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:34,094 INFO L225 Difference]: With dead ends: 875 [2024-11-27 19:51:34,094 INFO L226 Difference]: Without dead ends: 502 [2024-11-27 19:51:34,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:34,095 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 640 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:34,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:34,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-11-27 19:51:34,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 473. [2024-11-27 19:51:34,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.4046610169491525) internal successors, (663), 472 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:34,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 663 transitions. [2024-11-27 19:51:34,106 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 663 transitions. Word has length 76 [2024-11-27 19:51:34,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:34,107 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 663 transitions. [2024-11-27 19:51:34,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:34,107 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 663 transitions. [2024-11-27 19:51:34,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:34,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:34,108 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:34,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 19:51:34,108 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:34,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:34,109 INFO L85 PathProgramCache]: Analyzing trace with hash 456902278, now seen corresponding path program 1 times [2024-11-27 19:51:34,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:34,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007751431] [2024-11-27 19:51:34,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:34,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:34,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:34,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007751431] [2024-11-27 19:51:34,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007751431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:34,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:34,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:34,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135279271] [2024-11-27 19:51:34,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:34,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:34,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:34,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:34,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:34,328 INFO L87 Difference]: Start difference. First operand 473 states and 663 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:34,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:34,504 INFO L93 Difference]: Finished difference Result 875 states and 1233 transitions. [2024-11-27 19:51:34,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:34,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:34,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:34,506 INFO L225 Difference]: With dead ends: 875 [2024-11-27 19:51:34,507 INFO L226 Difference]: Without dead ends: 500 [2024-11-27 19:51:34,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:34,508 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 634 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:34,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:34,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-27 19:51:34,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 471. [2024-11-27 19:51:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.4) internal successors, (658), 470 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 658 transitions. [2024-11-27 19:51:34,518 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 658 transitions. Word has length 76 [2024-11-27 19:51:34,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:34,518 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 658 transitions. [2024-11-27 19:51:34,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 658 transitions. [2024-11-27 19:51:34,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:34,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:34,520 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:34,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 19:51:34,520 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:34,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:34,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1181635149, now seen corresponding path program 1 times [2024-11-27 19:51:34,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:34,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134963973] [2024-11-27 19:51:34,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:34,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:34,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:34,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:34,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134963973] [2024-11-27 19:51:34,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134963973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:34,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:34,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:34,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503003403] [2024-11-27 19:51:34,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:34,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:34,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:34,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:34,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:34,741 INFO L87 Difference]: Start difference. First operand 471 states and 658 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:34,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:34,881 INFO L93 Difference]: Finished difference Result 875 states and 1230 transitions. [2024-11-27 19:51:34,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:34,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:34,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:34,884 INFO L225 Difference]: With dead ends: 875 [2024-11-27 19:51:34,884 INFO L226 Difference]: Without dead ends: 498 [2024-11-27 19:51:34,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:34,885 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 628 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:34,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:34,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2024-11-27 19:51:34,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 469. [2024-11-27 19:51:34,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 1.3952991452991452) internal successors, (653), 468 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 653 transitions. [2024-11-27 19:51:34,895 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 653 transitions. Word has length 76 [2024-11-27 19:51:34,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:34,896 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 653 transitions. [2024-11-27 19:51:34,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:34,896 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 653 transitions. [2024-11-27 19:51:34,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:34,897 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:34,897 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:34,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 19:51:34,897 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:34,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:34,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1662408859, now seen corresponding path program 1 times [2024-11-27 19:51:34,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:34,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660988743] [2024-11-27 19:51:34,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:34,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:35,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:35,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660988743] [2024-11-27 19:51:35,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660988743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:35,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:35,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:35,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013820006] [2024-11-27 19:51:35,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:35,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:35,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:35,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:35,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:35,170 INFO L87 Difference]: Start difference. First operand 469 states and 653 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:35,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:35,326 INFO L93 Difference]: Finished difference Result 877 states and 1229 transitions. [2024-11-27 19:51:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:35,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:35,328 INFO L225 Difference]: With dead ends: 877 [2024-11-27 19:51:35,328 INFO L226 Difference]: Without dead ends: 496 [2024-11-27 19:51:35,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:35,329 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 624 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:35,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:35,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-11-27 19:51:35,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 467. [2024-11-27 19:51:35,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.390557939914163) internal successors, (648), 466 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:35,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 648 transitions. [2024-11-27 19:51:35,341 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 648 transitions. Word has length 76 [2024-11-27 19:51:35,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:35,341 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 648 transitions. [2024-11-27 19:51:35,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 648 transitions. [2024-11-27 19:51:35,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:35,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:35,343 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:35,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 19:51:35,343 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:35,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:35,344 INFO L85 PathProgramCache]: Analyzing trace with hash 32289570, now seen corresponding path program 1 times [2024-11-27 19:51:35,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:35,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804352445] [2024-11-27 19:51:35,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:35,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:35,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:35,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804352445] [2024-11-27 19:51:35,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804352445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:35,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:35,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:35,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079735919] [2024-11-27 19:51:35,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:35,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:35,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:35,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:35,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:35,610 INFO L87 Difference]: Start difference. First operand 467 states and 648 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:35,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:35,776 INFO L93 Difference]: Finished difference Result 877 states and 1226 transitions. [2024-11-27 19:51:35,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:35,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:35,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:35,778 INFO L225 Difference]: With dead ends: 877 [2024-11-27 19:51:35,778 INFO L226 Difference]: Without dead ends: 494 [2024-11-27 19:51:35,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:35,778 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 618 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:35,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:35,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2024-11-27 19:51:35,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 465. [2024-11-27 19:51:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 1.3857758620689655) internal successors, (643), 464 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:35,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 643 transitions. [2024-11-27 19:51:35,786 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 643 transitions. Word has length 76 [2024-11-27 19:51:35,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:35,787 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 643 transitions. [2024-11-27 19:51:35,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 643 transitions. [2024-11-27 19:51:35,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:35,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:35,788 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:35,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-27 19:51:35,788 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:35,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:35,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1150715881, now seen corresponding path program 1 times [2024-11-27 19:51:35,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:35,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852352848] [2024-11-27 19:51:35,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:35,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:35,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:35,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852352848] [2024-11-27 19:51:35,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852352848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:35,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:35,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:35,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814499185] [2024-11-27 19:51:35,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:35,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:35,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:35,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:35,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:35,996 INFO L87 Difference]: Start difference. First operand 465 states and 643 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:36,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:36,131 INFO L93 Difference]: Finished difference Result 877 states and 1223 transitions. [2024-11-27 19:51:36,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:36,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:36,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:36,133 INFO L225 Difference]: With dead ends: 877 [2024-11-27 19:51:36,133 INFO L226 Difference]: Without dead ends: 492 [2024-11-27 19:51:36,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:36,134 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 612 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:36,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:36,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-27 19:51:36,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 463. [2024-11-27 19:51:36,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.380952380952381) internal successors, (638), 462 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:36,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 638 transitions. [2024-11-27 19:51:36,141 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 638 transitions. Word has length 76 [2024-11-27 19:51:36,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:36,141 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 638 transitions. [2024-11-27 19:51:36,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:36,141 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 638 transitions. [2024-11-27 19:51:36,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:36,142 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:36,142 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:36,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-27 19:51:36,143 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:36,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:36,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2078390544, now seen corresponding path program 1 times [2024-11-27 19:51:36,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:36,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136105459] [2024-11-27 19:51:36,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:36,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:36,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:36,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136105459] [2024-11-27 19:51:36,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136105459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:36,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:36,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:36,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673257476] [2024-11-27 19:51:36,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:36,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:36,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:36,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:36,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:36,359 INFO L87 Difference]: Start difference. First operand 463 states and 638 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:36,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:36,513 INFO L93 Difference]: Finished difference Result 877 states and 1220 transitions. [2024-11-27 19:51:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:36,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:36,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:36,515 INFO L225 Difference]: With dead ends: 877 [2024-11-27 19:51:36,515 INFO L226 Difference]: Without dead ends: 490 [2024-11-27 19:51:36,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:36,516 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 606 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:36,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:36,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2024-11-27 19:51:36,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 461. [2024-11-27 19:51:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.376086956521739) internal successors, (633), 460 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 633 transitions. [2024-11-27 19:51:36,528 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 633 transitions. Word has length 76 [2024-11-27 19:51:36,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:36,528 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 633 transitions. [2024-11-27 19:51:36,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:36,528 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 633 transitions. [2024-11-27 19:51:36,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:36,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:36,529 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:36,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-27 19:51:36,529 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:36,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:36,530 INFO L85 PathProgramCache]: Analyzing trace with hash 11690039, now seen corresponding path program 1 times [2024-11-27 19:51:36,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:36,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597400873] [2024-11-27 19:51:36,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:36,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:36,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:36,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597400873] [2024-11-27 19:51:36,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597400873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:36,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:36,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:36,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227145770] [2024-11-27 19:51:36,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:36,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:36,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:36,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:36,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:36,758 INFO L87 Difference]: Start difference. First operand 461 states and 633 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:36,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:36,896 INFO L93 Difference]: Finished difference Result 877 states and 1217 transitions. [2024-11-27 19:51:36,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:36,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:36,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:36,897 INFO L225 Difference]: With dead ends: 877 [2024-11-27 19:51:36,897 INFO L226 Difference]: Without dead ends: 488 [2024-11-27 19:51:36,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:36,898 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 600 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:36,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:36,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2024-11-27 19:51:36,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 459. [2024-11-27 19:51:36,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.3711790393013101) internal successors, (628), 458 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:36,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 628 transitions. [2024-11-27 19:51:36,905 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 628 transitions. Word has length 76 [2024-11-27 19:51:36,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:36,905 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 628 transitions. [2024-11-27 19:51:36,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:36,905 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 628 transitions. [2024-11-27 19:51:36,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:51:36,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:36,906 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:36,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-27 19:51:36,906 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:36,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:36,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1465564226, now seen corresponding path program 1 times [2024-11-27 19:51:36,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:36,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185088987] [2024-11-27 19:51:36,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:36,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:37,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:37,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185088987] [2024-11-27 19:51:37,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185088987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:37,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:37,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:37,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967360815] [2024-11-27 19:51:37,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:37,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:37,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:37,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:37,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:37,237 INFO L87 Difference]: Start difference. First operand 459 states and 628 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:37,396 INFO L93 Difference]: Finished difference Result 809 states and 1141 transitions. [2024-11-27 19:51:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:51:37,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 19:51:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:37,398 INFO L225 Difference]: With dead ends: 809 [2024-11-27 19:51:37,398 INFO L226 Difference]: Without dead ends: 418 [2024-11-27 19:51:37,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:37,399 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 568 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:37,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 1179 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:37,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-27 19:51:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 405. [2024-11-27 19:51:37,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 1.4158415841584158) internal successors, (572), 404 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 572 transitions. [2024-11-27 19:51:37,414 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 572 transitions. Word has length 76 [2024-11-27 19:51:37,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:37,415 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 572 transitions. [2024-11-27 19:51:37,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 572 transitions. [2024-11-27 19:51:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:51:37,417 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:37,418 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:37,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-27 19:51:37,418 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:37,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:37,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1348943408, now seen corresponding path program 1 times [2024-11-27 19:51:37,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:37,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284354964] [2024-11-27 19:51:37,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:37,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 48 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:42,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:42,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284354964] [2024-11-27 19:51:42,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284354964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:42,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048771245] [2024-11-27 19:51:42,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:42,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:42,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:42,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:42,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:51:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:43,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 19:51:43,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 19:51:43,718 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:51:43,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048771245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:43,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:51:43,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2024-11-27 19:51:43,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799167182] [2024-11-27 19:51:43,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:43,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:43,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:43,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:43,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:51:43,721 INFO L87 Difference]: Start difference. First operand 405 states and 572 transitions. Second operand has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:44,621 INFO L93 Difference]: Finished difference Result 849 states and 1224 transitions. [2024-11-27 19:51:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:51:44,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:51:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:44,623 INFO L225 Difference]: With dead ends: 849 [2024-11-27 19:51:44,623 INFO L226 Difference]: Without dead ends: 512 [2024-11-27 19:51:44,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:51:44,624 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 113 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:44,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1404 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 19:51:44,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-27 19:51:44,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 483. [2024-11-27 19:51:44,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4273858921161826) internal successors, (688), 482 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:44,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 688 transitions. [2024-11-27 19:51:44,632 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 688 transitions. Word has length 215 [2024-11-27 19:51:44,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:44,632 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 688 transitions. [2024-11-27 19:51:44,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:44,633 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 688 transitions. [2024-11-27 19:51:44,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:51:44,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:44,634 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:44,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 19:51:44,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:44,835 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:44,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:44,835 INFO L85 PathProgramCache]: Analyzing trace with hash -518850931, now seen corresponding path program 1 times [2024-11-27 19:51:44,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:44,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973722703] [2024-11-27 19:51:44,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:44,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:48,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:48,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973722703] [2024-11-27 19:51:48,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973722703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:48,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199062232] [2024-11-27 19:51:48,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:48,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:48,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:48,303 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:48,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 19:51:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:49,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 19:51:49,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 19:51:49,976 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:51:49,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199062232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:49,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:51:49,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2024-11-27 19:51:49,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479546098] [2024-11-27 19:51:49,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:49,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:49,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:49,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:49,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:51:49,978 INFO L87 Difference]: Start difference. First operand 483 states and 688 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:50,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:50,575 INFO L93 Difference]: Finished difference Result 1043 states and 1512 transitions. [2024-11-27 19:51:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:51:50,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:51:50,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:50,578 INFO L225 Difference]: With dead ends: 1043 [2024-11-27 19:51:50,578 INFO L226 Difference]: Without dead ends: 628 [2024-11-27 19:51:50,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:51:50,579 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 93 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:50,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1404 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:51:50,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2024-11-27 19:51:50,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 481. [2024-11-27 19:51:50,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.4270833333333333) internal successors, (685), 480 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 685 transitions. [2024-11-27 19:51:50,585 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 685 transitions. Word has length 215 [2024-11-27 19:51:50,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:50,585 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 685 transitions. [2024-11-27 19:51:50,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:50,586 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 685 transitions. [2024-11-27 19:51:50,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:51:50,586 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:50,587 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:50,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 19:51:50,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:50,787 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:50,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:50,788 INFO L85 PathProgramCache]: Analyzing trace with hash 843754432, now seen corresponding path program 1 times [2024-11-27 19:51:50,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:50,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612731156] [2024-11-27 19:51:50,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:50,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:53,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:53,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612731156] [2024-11-27 19:51:53,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612731156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:53,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811207741] [2024-11-27 19:51:53,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:53,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:53,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:53,633 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:53,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 19:51:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:55,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 19:51:55,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:55,141 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-27 19:51:55,142 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:51:55,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811207741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:55,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:51:55,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2024-11-27 19:51:55,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566292037] [2024-11-27 19:51:55,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:55,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:55,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:55,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:55,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:51:55,144 INFO L87 Difference]: Start difference. First operand 481 states and 685 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 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) [2024-11-27 19:51:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:55,601 INFO L93 Difference]: Finished difference Result 951 states and 1374 transitions. [2024-11-27 19:51:55,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:51:55,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 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) Word has length 215 [2024-11-27 19:51:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:55,603 INFO L225 Difference]: With dead ends: 951 [2024-11-27 19:51:55,603 INFO L226 Difference]: Without dead ends: 538 [2024-11-27 19:51:55,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:51:55,604 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 49 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:55,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1404 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:51:55,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-27 19:51:55,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 479. [2024-11-27 19:51:55,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.4267782426778242) internal successors, (682), 478 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:55,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 682 transitions. [2024-11-27 19:51:55,612 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 682 transitions. Word has length 215 [2024-11-27 19:51:55,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:55,613 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 682 transitions. [2024-11-27 19:51:55,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 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) [2024-11-27 19:51:55,613 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 682 transitions. [2024-11-27 19:51:55,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:51:55,615 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:55,615 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:55,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 19:51:55,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-27 19:51:55,816 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:55,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:55,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1939972388, now seen corresponding path program 1 times [2024-11-27 19:51:55,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:55,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971251866] [2024-11-27 19:51:55,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:55,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:59,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:59,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971251866] [2024-11-27 19:51:59,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971251866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:59,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110724262] [2024-11-27 19:51:59,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:59,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:59,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:59,954 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:59,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 19:52:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:01,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 19:52:01,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:01,446 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-27 19:52:01,446 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:52:01,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110724262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:01,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:52:01,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-27 19:52:01,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179185004] [2024-11-27 19:52:01,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:01,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:52:01,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:01,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:52:01,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:52:01,448 INFO L87 Difference]: Start difference. First operand 479 states and 682 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:01,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:01,847 INFO L93 Difference]: Finished difference Result 921 states and 1329 transitions. [2024-11-27 19:52:01,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:52:01,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:52:01,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:01,850 INFO L225 Difference]: With dead ends: 921 [2024-11-27 19:52:01,850 INFO L226 Difference]: Without dead ends: 508 [2024-11-27 19:52:01,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 19:52:01,851 INFO L435 NwaCegarLoop]: 431 mSDtfsCounter, 31 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:01,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1363 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:52:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2024-11-27 19:52:01,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 479. [2024-11-27 19:52:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.4225941422594142) internal successors, (680), 478 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 680 transitions. [2024-11-27 19:52:01,861 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 680 transitions. Word has length 215 [2024-11-27 19:52:01,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:01,862 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 680 transitions. [2024-11-27 19:52:01,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:01,862 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 680 transitions. [2024-11-27 19:52:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:52:01,863 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:01,864 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:01,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 19:52:02,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-27 19:52:02,064 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:02,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:02,065 INFO L85 PathProgramCache]: Analyzing trace with hash -2105670549, now seen corresponding path program 1 times [2024-11-27 19:52:02,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:02,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821770443] [2024-11-27 19:52:02,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:02,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:05,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:05,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821770443] [2024-11-27 19:52:05,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821770443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:05,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661964928] [2024-11-27 19:52:05,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:05,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:05,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:52:05,384 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:52:05,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 19:52:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:06,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 19:52:06,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:07,214 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:07,214 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:52:07,278 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-27 19:52:07,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661964928] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:07,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:52:07,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 6] total 17 [2024-11-27 19:52:07,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536678154] [2024-11-27 19:52:07,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:07,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:52:07,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:07,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:52:07,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:52:07,280 INFO L87 Difference]: Start difference. First operand 479 states and 680 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:07,631 INFO L93 Difference]: Finished difference Result 919 states and 1322 transitions. [2024-11-27 19:52:07,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:52:07,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:52:07,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:07,634 INFO L225 Difference]: With dead ends: 919 [2024-11-27 19:52:07,634 INFO L226 Difference]: Without dead ends: 506 [2024-11-27 19:52:07,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-11-27 19:52:07,635 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 70 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:07,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1130 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 19:52:07,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-11-27 19:52:07,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 475. [2024-11-27 19:52:07,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 1.4219409282700421) internal successors, (674), 474 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:07,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 674 transitions. [2024-11-27 19:52:07,645 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 674 transitions. Word has length 215 [2024-11-27 19:52:07,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:07,645 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 674 transitions. [2024-11-27 19:52:07,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:07,646 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 674 transitions. [2024-11-27 19:52:07,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:52:07,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:07,647 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:07,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 19:52:07,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:07,848 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:07,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:07,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1271837170, now seen corresponding path program 1 times [2024-11-27 19:52:07,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:07,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949394945] [2024-11-27 19:52:07,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:07,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 12 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:10,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:10,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949394945] [2024-11-27 19:52:10,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949394945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:10,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030837622] [2024-11-27 19:52:10,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:10,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:10,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:52:10,528 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:52:10,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 19:52:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:12,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 19:52:12,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:12,510 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:52:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-27 19:52:12,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030837622] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:12,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:52:12,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 6] total 16 [2024-11-27 19:52:12,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55103546] [2024-11-27 19:52:12,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:12,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:52:12,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:12,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:52:12,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:52:12,591 INFO L87 Difference]: Start difference. First operand 475 states and 674 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:13,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:13,016 INFO L93 Difference]: Finished difference Result 923 states and 1325 transitions. [2024-11-27 19:52:13,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:52:13,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:52:13,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:13,018 INFO L225 Difference]: With dead ends: 923 [2024-11-27 19:52:13,018 INFO L226 Difference]: Without dead ends: 512 [2024-11-27 19:52:13,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:52:13,019 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 39 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:13,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1377 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:52:13,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-27 19:52:13,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 473. [2024-11-27 19:52:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.4216101694915255) internal successors, (671), 472 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:13,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 671 transitions. [2024-11-27 19:52:13,026 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 671 transitions. Word has length 215 [2024-11-27 19:52:13,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:13,027 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 671 transitions. [2024-11-27 19:52:13,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:13,027 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 671 transitions. [2024-11-27 19:52:13,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:52:13,028 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:13,028 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:13,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 19:52:13,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-27 19:52:13,229 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:13,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:13,229 INFO L85 PathProgramCache]: Analyzing trace with hash 61479353, now seen corresponding path program 1 times [2024-11-27 19:52:13,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:13,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872857872] [2024-11-27 19:52:13,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:13,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 14 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:16,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:16,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872857872] [2024-11-27 19:52:16,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872857872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:16,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074882530] [2024-11-27 19:52:16,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:16,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:16,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:52:16,413 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:52:16,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 19:52:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:17,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 19:52:17,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-27 19:52:18,055 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:52:18,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074882530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:18,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:52:18,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2024-11-27 19:52:18,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414802293] [2024-11-27 19:52:18,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:18,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:52:18,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:18,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:52:18,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:52:18,056 INFO L87 Difference]: Start difference. First operand 473 states and 671 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:18,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:18,467 INFO L93 Difference]: Finished difference Result 925 states and 1328 transitions. [2024-11-27 19:52:18,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:52:18,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:52:18,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:18,470 INFO L225 Difference]: With dead ends: 925 [2024-11-27 19:52:18,470 INFO L226 Difference]: Without dead ends: 516 [2024-11-27 19:52:18,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:52:18,470 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 45 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:18,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1404 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:52:18,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-11-27 19:52:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 471. [2024-11-27 19:52:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.421276595744681) internal successors, (668), 470 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 668 transitions. [2024-11-27 19:52:18,480 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 668 transitions. Word has length 215 [2024-11-27 19:52:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:18,480 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 668 transitions. [2024-11-27 19:52:18,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 668 transitions. [2024-11-27 19:52:18,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:52:18,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:18,482 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:18,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 19:52:18,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-27 19:52:18,683 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:18,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:18,683 INFO L85 PathProgramCache]: Analyzing trace with hash 990828551, now seen corresponding path program 1 times [2024-11-27 19:52:18,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:18,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789310754] [2024-11-27 19:52:18,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:18,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:20,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:20,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789310754] [2024-11-27 19:52:20,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789310754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:20,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616068414] [2024-11-27 19:52:20,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:20,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:20,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:52:20,637 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:52:20,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 19:52:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:22,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 19:52:22,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-27 19:52:22,345 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:52:22,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616068414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:22,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:52:22,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-27 19:52:22,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617534015] [2024-11-27 19:52:22,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:22,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:52:22,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:22,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:52:22,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:52:22,346 INFO L87 Difference]: Start difference. First operand 471 states and 668 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:22,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:22,755 INFO L93 Difference]: Finished difference Result 933 states and 1340 transitions. [2024-11-27 19:52:22,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:52:22,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:52:22,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:22,757 INFO L225 Difference]: With dead ends: 933 [2024-11-27 19:52:22,757 INFO L226 Difference]: Without dead ends: 526 [2024-11-27 19:52:22,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:52:22,758 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 53 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:22,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1404 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:52:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-11-27 19:52:22,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 469. [2024-11-27 19:52:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 1.420940170940171) internal successors, (665), 468 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 665 transitions. [2024-11-27 19:52:22,763 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 665 transitions. Word has length 215 [2024-11-27 19:52:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:22,764 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 665 transitions. [2024-11-27 19:52:22,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 665 transitions. [2024-11-27 19:52:22,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:52:22,765 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:22,765 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:22,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 19:52:22,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-27 19:52:22,965 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:22,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:22,966 INFO L85 PathProgramCache]: Analyzing trace with hash 595136142, now seen corresponding path program 1 times [2024-11-27 19:52:22,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:22,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136377639] [2024-11-27 19:52:22,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:22,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 20 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:25,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:25,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136377639] [2024-11-27 19:52:25,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136377639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:25,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901724052] [2024-11-27 19:52:25,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:25,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:25,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:52:25,530 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:52:25,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 19:52:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:27,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 19:52:27,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 19:52:27,400 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:52:27,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901724052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:27,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:52:27,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2024-11-27 19:52:27,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226579757] [2024-11-27 19:52:27,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:27,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:52:27,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:27,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:52:27,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:52:27,402 INFO L87 Difference]: Start difference. First operand 469 states and 665 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:27,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:27,825 INFO L93 Difference]: Finished difference Result 935 states and 1343 transitions. [2024-11-27 19:52:27,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:52:27,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:52:27,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:27,827 INFO L225 Difference]: With dead ends: 935 [2024-11-27 19:52:27,827 INFO L226 Difference]: Without dead ends: 530 [2024-11-27 19:52:27,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:52:27,828 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 57 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:27,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1404 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:52:27,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-27 19:52:27,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 467. [2024-11-27 19:52:27,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.4206008583690988) internal successors, (662), 466 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:27,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 662 transitions. [2024-11-27 19:52:27,837 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 662 transitions. Word has length 215 [2024-11-27 19:52:27,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:27,838 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 662 transitions. [2024-11-27 19:52:27,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:27,838 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 662 transitions. [2024-11-27 19:52:27,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:52:27,839 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:27,840 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:27,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 19:52:28,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:28,040 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:28,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:28,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1708146859, now seen corresponding path program 1 times [2024-11-27 19:52:28,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:28,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446446077] [2024-11-27 19:52:28,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:28,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:29,794 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:29,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:29,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446446077] [2024-11-27 19:52:29,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446446077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:29,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241985062] [2024-11-27 19:52:29,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:29,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:29,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:52:29,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:52:29,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 19:52:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:31,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 19:52:31,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:32,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:52:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-27 19:52:32,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241985062] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:32,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:52:32,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 14 [2024-11-27 19:52:32,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606370848] [2024-11-27 19:52:32,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:32,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:52:32,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:32,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:52:32,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:52:32,138 INFO L87 Difference]: Start difference. First operand 467 states and 662 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:32,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:32,453 INFO L93 Difference]: Finished difference Result 937 states and 1346 transitions. [2024-11-27 19:52:32,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:52:32,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:52:32,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:32,455 INFO L225 Difference]: With dead ends: 937 [2024-11-27 19:52:32,455 INFO L226 Difference]: Without dead ends: 534 [2024-11-27 19:52:32,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:52:32,456 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 117 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:32,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1132 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 19:52:32,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-27 19:52:32,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 465. [2024-11-27 19:52:32,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 1.4202586206896552) internal successors, (659), 464 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 659 transitions. [2024-11-27 19:52:32,467 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 659 transitions. Word has length 215 [2024-11-27 19:52:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:32,467 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 659 transitions. [2024-11-27 19:52:32,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 659 transitions. [2024-11-27 19:52:32,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:52:32,469 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:32,469 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:32,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 19:52:32,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:32,669 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:32,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:32,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1040013916, now seen corresponding path program 1 times [2024-11-27 19:52:32,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:32,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188500584] [2024-11-27 19:52:32,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:32,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:34,749 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:34,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:34,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188500584] [2024-11-27 19:52:34,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188500584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:34,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857820439] [2024-11-27 19:52:34,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:34,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:34,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:52:34,752 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:52:34,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 19:52:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:36,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 19:52:36,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-27 19:52:36,726 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:52:36,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857820439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:36,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:52:36,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-27 19:52:36,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493466993] [2024-11-27 19:52:36,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:36,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:52:36,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:36,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:52:36,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:52:36,729 INFO L87 Difference]: Start difference. First operand 465 states and 659 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:37,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:37,254 INFO L93 Difference]: Finished difference Result 939 states and 1349 transitions. [2024-11-27 19:52:37,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:52:37,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:52:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:37,255 INFO L225 Difference]: With dead ends: 939 [2024-11-27 19:52:37,255 INFO L226 Difference]: Without dead ends: 538 [2024-11-27 19:52:37,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:52:37,256 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 65 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:37,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1404 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:52:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-27 19:52:37,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 463. [2024-11-27 19:52:37,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.41991341991342) internal successors, (656), 462 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 656 transitions. [2024-11-27 19:52:37,265 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 656 transitions. Word has length 215 [2024-11-27 19:52:37,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:37,265 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 656 transitions. [2024-11-27 19:52:37,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:37,265 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 656 transitions. [2024-11-27 19:52:37,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:52:37,266 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:37,266 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:37,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-27 19:52:37,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-27 19:52:37,467 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:37,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:37,467 INFO L85 PathProgramCache]: Analyzing trace with hash 617631651, now seen corresponding path program 1 times [2024-11-27 19:52:37,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:37,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378448270] [2024-11-27 19:52:37,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:37,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:40,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:40,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378448270] [2024-11-27 19:52:40,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378448270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:40,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187319611] [2024-11-27 19:52:40,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:40,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:40,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:52:40,063 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:52:40,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 19:52:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:42,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 19:52:42,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-27 19:52:42,274 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:52:42,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187319611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:42,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:52:42,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2024-11-27 19:52:42,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352632453] [2024-11-27 19:52:42,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:42,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:52:42,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:42,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:52:42,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:52:42,276 INFO L87 Difference]: Start difference. First operand 463 states and 656 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:42,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:42,880 INFO L93 Difference]: Finished difference Result 941 states and 1352 transitions. [2024-11-27 19:52:42,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:52:42,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:52:42,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:42,882 INFO L225 Difference]: With dead ends: 941 [2024-11-27 19:52:42,882 INFO L226 Difference]: Without dead ends: 542 [2024-11-27 19:52:42,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:52:42,883 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 69 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:42,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1404 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:52:42,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-27 19:52:42,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 461. [2024-11-27 19:52:42,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.4195652173913043) internal successors, (653), 460 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:42,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 653 transitions. [2024-11-27 19:52:42,891 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 653 transitions. Word has length 215 [2024-11-27 19:52:42,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:42,892 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 653 transitions. [2024-11-27 19:52:42,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:42,892 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 653 transitions. [2024-11-27 19:52:42,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:52:42,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:42,893 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:42,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 19:52:43,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-27 19:52:43,094 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:43,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:43,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1564799190, now seen corresponding path program 1 times [2024-11-27 19:52:43,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:43,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41115037] [2024-11-27 19:52:43,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:43,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:45,000 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:45,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:45,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41115037] [2024-11-27 19:52:45,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41115037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:45,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193198432] [2024-11-27 19:52:45,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:45,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:45,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:52:45,006 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:52:45,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 19:52:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:47,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 19:52:47,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 19:52:47,680 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:52:47,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193198432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:47,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:52:47,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-27 19:52:47,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917545343] [2024-11-27 19:52:47,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:47,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:52:47,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:47,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:52:47,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:52:47,682 INFO L87 Difference]: Start difference. First operand 461 states and 653 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:48,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:48,273 INFO L93 Difference]: Finished difference Result 943 states and 1355 transitions. [2024-11-27 19:52:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:52:48,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:52:48,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:48,276 INFO L225 Difference]: With dead ends: 943 [2024-11-27 19:52:48,276 INFO L226 Difference]: Without dead ends: 546 [2024-11-27 19:52:48,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:52:48,277 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 73 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:48,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 1404 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:52:48,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2024-11-27 19:52:48,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 459. [2024-11-27 19:52:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.4192139737991267) internal successors, (650), 458 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:48,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 650 transitions. [2024-11-27 19:52:48,289 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 650 transitions. Word has length 215 [2024-11-27 19:52:48,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:48,289 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 650 transitions. [2024-11-27 19:52:48,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:48,290 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 650 transitions. [2024-11-27 19:52:48,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:52:48,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:48,292 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:48,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 19:52:48,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-27 19:52:48,492 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:48,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:48,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1358170353, now seen corresponding path program 1 times [2024-11-27 19:52:48,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:48,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392973456] [2024-11-27 19:52:48,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:48,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:51,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:51,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392973456] [2024-11-27 19:52:51,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392973456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:51,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4928491] [2024-11-27 19:52:51,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:51,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:51,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:52:51,474 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:52:51,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 19:52:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:54,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 19:52:54,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-27 19:52:54,287 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:52:54,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4928491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:54,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:52:54,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2024-11-27 19:52:54,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140414983] [2024-11-27 19:52:54,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:54,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:52:54,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:54,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:52:54,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:52:54,289 INFO L87 Difference]: Start difference. First operand 459 states and 650 transitions. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:54,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:54,949 INFO L93 Difference]: Finished difference Result 945 states and 1358 transitions. [2024-11-27 19:52:54,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:52:54,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:52:54,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:54,953 INFO L225 Difference]: With dead ends: 945 [2024-11-27 19:52:54,953 INFO L226 Difference]: Without dead ends: 550 [2024-11-27 19:52:54,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:52:54,955 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 77 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:54,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1404 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:52:54,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-27 19:52:54,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 457. [2024-11-27 19:52:54,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.418859649122807) internal successors, (647), 456 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 647 transitions. [2024-11-27 19:52:54,964 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 647 transitions. Word has length 215 [2024-11-27 19:52:54,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:54,964 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 647 transitions. [2024-11-27 19:52:54,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:54,965 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 647 transitions. [2024-11-27 19:52:54,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:52:54,967 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:54,967 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:54,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 19:52:55,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-27 19:52:55,168 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:55,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:55,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1423289592, now seen corresponding path program 1 times [2024-11-27 19:52:55,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:55,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94102075] [2024-11-27 19:52:55,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:55,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:58,013 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 32 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:58,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:58,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94102075] [2024-11-27 19:52:58,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94102075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:58,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581905562] [2024-11-27 19:52:58,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:58,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:58,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:52:58,016 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:52:58,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 19:53:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:00,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 19:53:00,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:53:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:53:01,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:53:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-27 19:53:01,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581905562] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:53:01,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:53:01,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 6] total 17 [2024-11-27 19:53:01,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028181949] [2024-11-27 19:53:01,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:53:01,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:53:01,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:53:01,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:53:01,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:53:01,496 INFO L87 Difference]: Start difference. First operand 457 states and 647 transitions. Second operand has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:02,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:53:02,080 INFO L93 Difference]: Finished difference Result 947 states and 1361 transitions. [2024-11-27 19:53:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:53:02,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:53:02,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:53:02,082 INFO L225 Difference]: With dead ends: 947 [2024-11-27 19:53:02,082 INFO L226 Difference]: Without dead ends: 554 [2024-11-27 19:53:02,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-11-27 19:53:02,083 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 79 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:53:02,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1377 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:53:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-11-27 19:53:02,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 455. [2024-11-27 19:53:02,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.4185022026431717) internal successors, (644), 454 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:02,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 644 transitions. [2024-11-27 19:53:02,091 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 644 transitions. Word has length 215 [2024-11-27 19:53:02,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:53:02,091 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 644 transitions. [2024-11-27 19:53:02,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 644 transitions. [2024-11-27 19:53:02,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:53:02,093 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:53:02,093 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:53:02,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-27 19:53:02,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-27 19:53:02,294 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:53:02,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:53:02,295 INFO L85 PathProgramCache]: Analyzing trace with hash -421631169, now seen corresponding path program 1 times [2024-11-27 19:53:02,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:53:02,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462937754] [2024-11-27 19:53:02,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:02,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:53:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:53:04,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:53:04,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462937754] [2024-11-27 19:53:04,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462937754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:53:04,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413693612] [2024-11-27 19:53:04,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:04,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:04,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:53:04,278 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:53:04,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 19:53:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:07,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 19:53:07,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:53:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:53:07,640 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:53:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 19:53:07,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413693612] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:53:07,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:53:07,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 14 [2024-11-27 19:53:07,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520180911] [2024-11-27 19:53:07,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:53:07,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:53:07,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:53:07,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:53:07,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:53:07,852 INFO L87 Difference]: Start difference. First operand 455 states and 644 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:08,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:53:08,336 INFO L93 Difference]: Finished difference Result 949 states and 1364 transitions. [2024-11-27 19:53:08,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:53:08,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:53:08,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:53:08,339 INFO L225 Difference]: With dead ends: 949 [2024-11-27 19:53:08,339 INFO L226 Difference]: Without dead ends: 558 [2024-11-27 19:53:08,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:53:08,340 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 165 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:53:08,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1132 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:53:08,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-27 19:53:08,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 453. [2024-11-27 19:53:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.418141592920354) internal successors, (641), 452 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:08,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 641 transitions. [2024-11-27 19:53:08,352 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 641 transitions. Word has length 215 [2024-11-27 19:53:08,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:53:08,352 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 641 transitions. [2024-11-27 19:53:08,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 641 transitions. [2024-11-27 19:53:08,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:53:08,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:53:08,354 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:53:08,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-27 19:53:08,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-27 19:53:08,555 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:53:08,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:53:08,555 INFO L85 PathProgramCache]: Analyzing trace with hash 431010758, now seen corresponding path program 1 times [2024-11-27 19:53:08,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:53:08,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941329235] [2024-11-27 19:53:08,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:08,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:53:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:53:11,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:53:11,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941329235] [2024-11-27 19:53:11,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941329235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:53:11,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978334067] [2024-11-27 19:53:11,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:11,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:11,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:53:11,636 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:53:11,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 19:53:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:14,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 19:53:14,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:53:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:53:15,007 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:53:15,205 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-27 19:53:15,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978334067] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:53:15,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:53:15,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 6] total 16 [2024-11-27 19:53:15,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481278813] [2024-11-27 19:53:15,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:53:15,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:53:15,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:53:15,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:53:15,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:53:15,207 INFO L87 Difference]: Start difference. First operand 453 states and 641 transitions. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:15,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:53:15,759 INFO L93 Difference]: Finished difference Result 951 states and 1367 transitions. [2024-11-27 19:53:15,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:53:15,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:53:15,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:53:15,762 INFO L225 Difference]: With dead ends: 951 [2024-11-27 19:53:15,762 INFO L226 Difference]: Without dead ends: 562 [2024-11-27 19:53:15,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:53:15,763 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 173 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:53:15,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1132 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:53:15,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-27 19:53:15,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 451. [2024-11-27 19:53:15,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.4177777777777778) internal successors, (638), 450 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:15,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 638 transitions. [2024-11-27 19:53:15,774 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 638 transitions. Word has length 215 [2024-11-27 19:53:15,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:53:15,774 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 638 transitions. [2024-11-27 19:53:15,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:15,774 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 638 transitions. [2024-11-27 19:53:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:53:15,775 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:53:15,775 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:53:15,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-27 19:53:15,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-27 19:53:15,976 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:53:15,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:53:15,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1492099988, now seen corresponding path program 1 times [2024-11-27 19:53:15,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:53:15,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612373677] [2024-11-27 19:53:15,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:15,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:53:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:53:17,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:53:17,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612373677] [2024-11-27 19:53:17,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612373677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:53:17,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021767676] [2024-11-27 19:53:17,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:17,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:17,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:53:17,925 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:53:17,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 19:53:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:20,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 19:53:20,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:53:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 19:53:21,158 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:53:21,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021767676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:53:21,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:53:21,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-27 19:53:21,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165325431] [2024-11-27 19:53:21,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:53:21,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:53:21,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:53:21,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:53:21,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:53:21,160 INFO L87 Difference]: Start difference. First operand 451 states and 638 transitions. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:21,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:53:21,843 INFO L93 Difference]: Finished difference Result 959 states and 1379 transitions. [2024-11-27 19:53:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:53:21,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:53:21,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:53:21,846 INFO L225 Difference]: With dead ends: 959 [2024-11-27 19:53:21,847 INFO L226 Difference]: Without dead ends: 572 [2024-11-27 19:53:21,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:53:21,848 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 97 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:53:21,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1404 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:53:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-27 19:53:21,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 449. [2024-11-27 19:53:21,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.4174107142857142) internal successors, (635), 448 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:21,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 635 transitions. [2024-11-27 19:53:21,857 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 635 transitions. Word has length 215 [2024-11-27 19:53:21,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:53:21,858 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 635 transitions. [2024-11-27 19:53:21,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:21,858 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 635 transitions. [2024-11-27 19:53:21,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:53:21,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:53:21,859 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:53:21,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-27 19:53:22,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-27 19:53:22,060 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:53:22,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:53:22,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1280649947, now seen corresponding path program 1 times [2024-11-27 19:53:22,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:53:22,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166050773] [2024-11-27 19:53:22,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:22,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:53:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:25,160 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 42 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:53:25,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:53:25,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166050773] [2024-11-27 19:53:25,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166050773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:53:25,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054753409] [2024-11-27 19:53:25,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:25,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:25,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:53:25,162 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:53:25,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 19:53:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:28,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 19:53:28,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:53:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 19:53:28,463 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:53:28,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054753409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:53:28,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:53:28,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2024-11-27 19:53:28,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925290061] [2024-11-27 19:53:28,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:53:28,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:53:28,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:53:28,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:53:28,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:53:28,465 INFO L87 Difference]: Start difference. First operand 449 states and 635 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:29,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:53:29,171 INFO L93 Difference]: Finished difference Result 961 states and 1382 transitions. [2024-11-27 19:53:29,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:53:29,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:53:29,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:53:29,174 INFO L225 Difference]: With dead ends: 961 [2024-11-27 19:53:29,174 INFO L226 Difference]: Without dead ends: 576 [2024-11-27 19:53:29,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:53:29,175 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 101 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:53:29,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1404 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:53:29,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-27 19:53:29,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 447. [2024-11-27 19:53:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.4170403587443947) internal successors, (632), 446 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 632 transitions. [2024-11-27 19:53:29,183 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 632 transitions. Word has length 215 [2024-11-27 19:53:29,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:53:29,183 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 632 transitions. [2024-11-27 19:53:29,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:29,183 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 632 transitions. [2024-11-27 19:53:29,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:53:29,185 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:53:29,185 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:53:29,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-27 19:53:29,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:29,385 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:53:29,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:53:29,386 INFO L85 PathProgramCache]: Analyzing trace with hash -59376542, now seen corresponding path program 1 times [2024-11-27 19:53:29,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:53:29,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651377753] [2024-11-27 19:53:29,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:29,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:53:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 44 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:53:32,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:53:32,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651377753] [2024-11-27 19:53:32,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651377753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:53:32,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445942410] [2024-11-27 19:53:32,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:32,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:32,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:53:32,173 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:53:32,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 19:53:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:35,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 19:53:35,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:53:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 19:53:35,580 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:53:35,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445942410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:53:35,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:53:35,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2024-11-27 19:53:35,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607497936] [2024-11-27 19:53:35,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:53:35,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:53:35,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:53:35,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:53:35,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:53:35,582 INFO L87 Difference]: Start difference. First operand 447 states and 632 transitions. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:36,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:53:36,302 INFO L93 Difference]: Finished difference Result 963 states and 1385 transitions. [2024-11-27 19:53:36,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:53:36,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:53:36,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:53:36,305 INFO L225 Difference]: With dead ends: 963 [2024-11-27 19:53:36,305 INFO L226 Difference]: Without dead ends: 580 [2024-11-27 19:53:36,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:53:36,306 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 105 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:53:36,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1404 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:53:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-27 19:53:36,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 445. [2024-11-27 19:53:36,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.4166666666666667) internal successors, (629), 444 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 629 transitions. [2024-11-27 19:53:36,321 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 629 transitions. Word has length 215 [2024-11-27 19:53:36,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:53:36,321 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 629 transitions. [2024-11-27 19:53:36,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:36,322 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 629 transitions. [2024-11-27 19:53:36,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:53:36,323 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:53:36,324 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:53:36,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-27 19:53:36,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:36,525 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:53:36,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:53:36,525 INFO L85 PathProgramCache]: Analyzing trace with hash 665356329, now seen corresponding path program 1 times [2024-11-27 19:53:36,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:53:36,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734678205] [2024-11-27 19:53:36,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:36,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:53:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:53:38,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:53:38,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734678205] [2024-11-27 19:53:38,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734678205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:53:38,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943514319] [2024-11-27 19:53:38,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:38,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:38,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:53:38,653 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:53:38,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 19:53:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:41,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 19:53:41,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:53:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 19:53:42,030 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:53:42,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943514319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:53:42,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:53:42,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-27 19:53:42,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688666772] [2024-11-27 19:53:42,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:53:42,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:53:42,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:53:42,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:53:42,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:53:42,032 INFO L87 Difference]: Start difference. First operand 445 states and 629 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:42,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:53:42,771 INFO L93 Difference]: Finished difference Result 965 states and 1388 transitions. [2024-11-27 19:53:42,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:53:42,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:53:42,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:53:42,774 INFO L225 Difference]: With dead ends: 965 [2024-11-27 19:53:42,774 INFO L226 Difference]: Without dead ends: 584 [2024-11-27 19:53:42,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:53:42,776 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 109 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:53:42,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1404 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:53:42,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-27 19:53:42,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 443. [2024-11-27 19:53:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.416289592760181) internal successors, (626), 442 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:42,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 626 transitions. [2024-11-27 19:53:42,787 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 626 transitions. Word has length 215 [2024-11-27 19:53:42,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:53:42,788 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 626 transitions. [2024-11-27 19:53:42,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:42,788 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 626 transitions. [2024-11-27 19:53:42,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:53:42,789 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:53:42,790 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:53:42,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-27 19:53:42,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:42,990 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:53:42,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:53:42,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1146130039, now seen corresponding path program 1 times [2024-11-27 19:53:42,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:53:42,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484454634] [2024-11-27 19:53:42,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:42,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:53:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 50 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:53:45,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:53:45,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484454634] [2024-11-27 19:53:45,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484454634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:53:45,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120244828] [2024-11-27 19:53:45,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:45,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:45,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:53:45,952 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:53:45,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 19:53:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:49,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 19:53:49,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:53:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 19:53:49,545 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:53:49,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120244828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:53:49,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:53:49,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2024-11-27 19:53:49,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179829324] [2024-11-27 19:53:49,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:53:49,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:53:49,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:53:49,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:53:49,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:53:49,547 INFO L87 Difference]: Start difference. First operand 443 states and 626 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:50,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:53:50,322 INFO L93 Difference]: Finished difference Result 971 states and 1397 transitions. [2024-11-27 19:53:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:53:50,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:53:50,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:53:50,324 INFO L225 Difference]: With dead ends: 971 [2024-11-27 19:53:50,324 INFO L226 Difference]: Without dead ends: 592 [2024-11-27 19:53:50,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:53:50,325 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 117 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:53:50,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1404 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:53:50,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-27 19:53:50,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 445. [2024-11-27 19:53:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.4166666666666667) internal successors, (629), 444 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:50,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 629 transitions. [2024-11-27 19:53:50,334 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 629 transitions. Word has length 215 [2024-11-27 19:53:50,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:53:50,335 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 629 transitions. [2024-11-27 19:53:50,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:50,335 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 629 transitions. [2024-11-27 19:53:50,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:53:50,336 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:53:50,336 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:53:50,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-27 19:53:50,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:50,537 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:53:50,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:53:50,537 INFO L85 PathProgramCache]: Analyzing trace with hash -483989250, now seen corresponding path program 1 times [2024-11-27 19:53:50,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:53:50,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951161324] [2024-11-27 19:53:50,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:50,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:53:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 52 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:53:53,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:53:53,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951161324] [2024-11-27 19:53:53,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951161324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:53:53,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106024032] [2024-11-27 19:53:53,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:53,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:53,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:53:53,595 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:53:53,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 19:53:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:57,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 19:53:57,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:53:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:53:57,798 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:53:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-27 19:53:58,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106024032] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:53:58,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:53:58,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 6] total 16 [2024-11-27 19:53:58,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717296636] [2024-11-27 19:53:58,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:53:58,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:53:58,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:53:58,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:53:58,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:53:58,122 INFO L87 Difference]: Start difference. First operand 445 states and 629 transitions. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:58,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:53:58,731 INFO L93 Difference]: Finished difference Result 981 states and 1412 transitions. [2024-11-27 19:53:58,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:53:58,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:53:58,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:53:58,733 INFO L225 Difference]: With dead ends: 981 [2024-11-27 19:53:58,734 INFO L226 Difference]: Without dead ends: 600 [2024-11-27 19:53:58,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:53:58,734 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 237 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:53:58,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1132 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:53:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-11-27 19:53:58,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 447. [2024-11-27 19:53:58,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.4170403587443947) internal successors, (632), 446 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:58,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 632 transitions. [2024-11-27 19:53:58,744 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 632 transitions. Word has length 215 [2024-11-27 19:53:58,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:53:58,744 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 632 transitions. [2024-11-27 19:53:58,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:53:58,744 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 632 transitions. [2024-11-27 19:53:58,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:53:58,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:53:58,745 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:53:58,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-27 19:53:58,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:58,946 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:53:58,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:53:58,947 INFO L85 PathProgramCache]: Analyzing trace with hash 634437061, now seen corresponding path program 1 times [2024-11-27 19:53:58,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:53:58,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180396816] [2024-11-27 19:53:58,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:53:58,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:54:01,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:01,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180396816] [2024-11-27 19:54:01,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180396816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:01,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425409756] [2024-11-27 19:54:01,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:01,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:01,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:01,741 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:01,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 19:54:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:05,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 19:54:05,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:54:05,864 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:54:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 19:54:06,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425409756] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:06,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:54:06,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 14 [2024-11-27 19:54:06,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423041659] [2024-11-27 19:54:06,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:06,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:54:06,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:06,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:54:06,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:54:06,200 INFO L87 Difference]: Start difference. First operand 447 states and 632 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:06,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:06,819 INFO L93 Difference]: Finished difference Result 991 states and 1427 transitions. [2024-11-27 19:54:06,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:54:06,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:54:06,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:06,821 INFO L225 Difference]: With dead ends: 991 [2024-11-27 19:54:06,821 INFO L226 Difference]: Without dead ends: 608 [2024-11-27 19:54:06,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:54:06,822 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 245 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:06,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1132 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:54:06,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-11-27 19:54:06,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 449. [2024-11-27 19:54:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.4174107142857142) internal successors, (635), 448 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:06,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 635 transitions. [2024-11-27 19:54:06,836 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 635 transitions. Word has length 215 [2024-11-27 19:54:06,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:06,836 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 635 transitions. [2024-11-27 19:54:06,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:06,837 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 635 transitions. [2024-11-27 19:54:06,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:54:06,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:06,838 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:06,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-27 19:54:07,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:07,039 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:07,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:07,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1700297932, now seen corresponding path program 1 times [2024-11-27 19:54:07,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:07,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311637800] [2024-11-27 19:54:07,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:07,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:54:09,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:09,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311637800] [2024-11-27 19:54:09,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311637800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:09,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976660714] [2024-11-27 19:54:09,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:09,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:09,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:09,933 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:09,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-27 19:54:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:13,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 19:54:13,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 19:54:13,884 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:13,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976660714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:13,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:13,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2024-11-27 19:54:13,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367917397] [2024-11-27 19:54:13,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:13,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:54:13,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:13,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:54:13,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:54:13,886 INFO L87 Difference]: Start difference. First operand 449 states and 635 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:14,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:14,833 INFO L93 Difference]: Finished difference Result 1001 states and 1442 transitions. [2024-11-27 19:54:14,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:54:14,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:54:14,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:14,835 INFO L225 Difference]: With dead ends: 1001 [2024-11-27 19:54:14,835 INFO L226 Difference]: Without dead ends: 616 [2024-11-27 19:54:14,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:54:14,836 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 129 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:14,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1404 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 19:54:14,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-11-27 19:54:14,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 451. [2024-11-27 19:54:14,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.4177777777777778) internal successors, (638), 450 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 638 transitions. [2024-11-27 19:54:14,845 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 638 transitions. Word has length 215 [2024-11-27 19:54:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:14,846 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 638 transitions. [2024-11-27 19:54:14,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 638 transitions. [2024-11-27 19:54:14,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:54:14,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:14,847 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:14,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-27 19:54:15,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:15,047 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:15,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:15,048 INFO L85 PathProgramCache]: Analyzing trace with hash -504588781, now seen corresponding path program 1 times [2024-11-27 19:54:15,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:15,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498033035] [2024-11-27 19:54:15,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:15,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:54:18,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:18,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498033035] [2024-11-27 19:54:18,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498033035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:18,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671991896] [2024-11-27 19:54:18,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:18,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:18,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:18,954 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:18,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-27 19:54:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:22,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 19:54:22,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:54:23,409 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:54:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 19:54:23,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671991896] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:23,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:54:23,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 6] total 17 [2024-11-27 19:54:23,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329962420] [2024-11-27 19:54:23,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:23,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:54:23,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:23,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:54:23,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:54:23,779 INFO L87 Difference]: Start difference. First operand 451 states and 638 transitions. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:24,427 INFO L93 Difference]: Finished difference Result 1011 states and 1457 transitions. [2024-11-27 19:54:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:54:24,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:54:24,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:24,430 INFO L225 Difference]: With dead ends: 1011 [2024-11-27 19:54:24,430 INFO L226 Difference]: Without dead ends: 624 [2024-11-27 19:54:24,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-11-27 19:54:24,431 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 261 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:24,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1132 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:54:24,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-11-27 19:54:24,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 453. [2024-11-27 19:54:24,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.418141592920354) internal successors, (641), 452 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:24,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 641 transitions. [2024-11-27 19:54:24,441 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 641 transitions. Word has length 215 [2024-11-27 19:54:24,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:24,441 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 641 transitions. [2024-11-27 19:54:24,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:24,442 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 641 transitions. [2024-11-27 19:54:24,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 19:54:24,443 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:24,443 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:24,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-27 19:54:24,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-27 19:54:24,644 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:24,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:24,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1981843046, now seen corresponding path program 1 times [2024-11-27 19:54:24,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:24,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008842001] [2024-11-27 19:54:24,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:24,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:54:27,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:27,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008842001] [2024-11-27 19:54:27,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008842001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:27,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576526732] [2024-11-27 19:54:27,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:27,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:27,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:27,602 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:27,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-27 19:54:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:31,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-27 19:54:31,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:54:31,909 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:54:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 19:54:32,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576526732] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:32,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:54:32,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 6] total 16 [2024-11-27 19:54:32,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023018180] [2024-11-27 19:54:32,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:32,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:54:32,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:32,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:54:32,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:54:32,240 INFO L87 Difference]: Start difference. First operand 453 states and 641 transitions. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:33,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:33,007 INFO L93 Difference]: Finished difference Result 969 states and 1395 transitions. [2024-11-27 19:54:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:54:33,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-27 19:54:33,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:33,009 INFO L225 Difference]: With dead ends: 969 [2024-11-27 19:54:33,009 INFO L226 Difference]: Without dead ends: 580 [2024-11-27 19:54:33,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:54:33,010 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 135 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:33,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1377 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:54:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-27 19:54:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 403. [2024-11-27 19:54:33,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.4104477611940298) internal successors, (567), 402 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 567 transitions. [2024-11-27 19:54:33,017 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 567 transitions. Word has length 215 [2024-11-27 19:54:33,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:33,017 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 567 transitions. [2024-11-27 19:54:33,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:33,017 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 567 transitions. [2024-11-27 19:54:33,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-27 19:54:33,018 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:33,018 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:33,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-27 19:54:33,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:33,219 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:33,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:33,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1661480492, now seen corresponding path program 1 times [2024-11-27 19:54:33,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:33,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112111011] [2024-11-27 19:54:33,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:33,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:54:36,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:36,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112111011] [2024-11-27 19:54:36,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112111011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:36,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715041964] [2024-11-27 19:54:36,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:36,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:36,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:36,589 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:36,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-27 19:54:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:40,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 2388 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-27 19:54:40,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:40,732 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:54:40,732 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:54:40,921 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-27 19:54:40,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715041964] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:40,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:54:40,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 8] total 21 [2024-11-27 19:54:40,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445118264] [2024-11-27 19:54:40,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:40,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:54:40,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:40,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:54:40,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-27 19:54:40,923 INFO L87 Difference]: Start difference. First operand 403 states and 567 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:41,501 INFO L93 Difference]: Finished difference Result 786 states and 1119 transitions. [2024-11-27 19:54:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:54:41,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 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 216 [2024-11-27 19:54:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:41,503 INFO L225 Difference]: With dead ends: 786 [2024-11-27 19:54:41,503 INFO L226 Difference]: Without dead ends: 449 [2024-11-27 19:54:41,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-27 19:54:41,504 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 71 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:41,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1362 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:54:41,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-11-27 19:54:41,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 410. [2024-11-27 19:54:41,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.4058679706601467) internal successors, (575), 409 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:41,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 575 transitions. [2024-11-27 19:54:41,513 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 575 transitions. Word has length 216 [2024-11-27 19:54:41,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:41,514 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 575 transitions. [2024-11-27 19:54:41,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:41,514 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 575 transitions. [2024-11-27 19:54:41,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-27 19:54:41,516 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:41,516 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:41,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-27 19:54:41,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:41,717 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:41,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:41,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2001800808, now seen corresponding path program 1 times [2024-11-27 19:54:41,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:41,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264097345] [2024-11-27 19:54:41,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:41,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:54:44,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:44,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264097345] [2024-11-27 19:54:44,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264097345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:44,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969606346] [2024-11-27 19:54:44,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:44,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:44,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:44,855 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:44,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-27 19:54:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:48,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 2389 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 19:54:48,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-27 19:54:48,988 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:48,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969606346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:48,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:48,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2024-11-27 19:54:48,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791223078] [2024-11-27 19:54:48,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:48,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:54:48,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:48,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:54:48,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:54:48,989 INFO L87 Difference]: Start difference. First operand 410 states and 575 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:49,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:49,371 INFO L93 Difference]: Finished difference Result 764 states and 1090 transitions. [2024-11-27 19:54:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:54:49,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 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 217 [2024-11-27 19:54:49,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:49,373 INFO L225 Difference]: With dead ends: 764 [2024-11-27 19:54:49,373 INFO L226 Difference]: Without dead ends: 414 [2024-11-27 19:54:49,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:54:49,374 INFO L435 NwaCegarLoop]: 415 mSDtfsCounter, 24 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:49,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1470 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:54:49,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-27 19:54:49,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 401. [2024-11-27 19:54:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.4075) internal successors, (563), 400 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:49,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 563 transitions. [2024-11-27 19:54:49,380 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 563 transitions. Word has length 217 [2024-11-27 19:54:49,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:49,380 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 563 transitions. [2024-11-27 19:54:49,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:49,381 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 563 transitions. [2024-11-27 19:54:49,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-27 19:54:49,381 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:49,382 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:49,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-27 19:54:49,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:49,582 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:49,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:49,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1447239403, now seen corresponding path program 1 times [2024-11-27 19:54:49,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:49,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570009465] [2024-11-27 19:54:49,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:49,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 12 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:54:52,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:52,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570009465] [2024-11-27 19:54:52,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570009465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:52,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360875428] [2024-11-27 19:54:52,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:52,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:52,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:52,675 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:52,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-27 19:54:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:56,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 2391 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 19:54:56,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:56,979 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-27 19:54:56,979 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:54:56,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360875428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:54:56,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:54:56,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2024-11-27 19:54:56,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256624626] [2024-11-27 19:54:56,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:54:56,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:54:56,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:56,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:54:56,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:54:56,981 INFO L87 Difference]: Start difference. First operand 401 states and 563 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 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) [2024-11-27 19:54:57,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:57,566 INFO L93 Difference]: Finished difference Result 760 states and 1082 transitions. [2024-11-27 19:54:57,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:54:57,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 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) Word has length 217 [2024-11-27 19:54:57,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:57,567 INFO L225 Difference]: With dead ends: 760 [2024-11-27 19:54:57,568 INFO L226 Difference]: Without dead ends: 412 [2024-11-27 19:54:57,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-27 19:54:57,568 INFO L435 NwaCegarLoop]: 406 mSDtfsCounter, 27 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:57,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1545 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:54:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-27 19:54:57,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 399. [2024-11-27 19:54:57,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.4045226130653266) internal successors, (559), 398 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:54:57,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 559 transitions. [2024-11-27 19:54:57,574 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 559 transitions. Word has length 217 [2024-11-27 19:54:57,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:57,574 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 559 transitions. [2024-11-27 19:54:57,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 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) [2024-11-27 19:54:57,575 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 559 transitions. [2024-11-27 19:54:57,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-27 19:54:57,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:57,576 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:57,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-27 19:54:57,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:57,777 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:57,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:57,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1808999309, now seen corresponding path program 1 times [2024-11-27 19:54:57,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:57,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122678996] [2024-11-27 19:54:57,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:57,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:54:59,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:59,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122678996] [2024-11-27 19:54:59,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122678996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:59,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066368196] [2024-11-27 19:54:59,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:54:59,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:59,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:59,670 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:59,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-27 19:55:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:03,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 2394 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 19:55:03,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:55:04,534 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:04,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:55:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-27 19:55:04,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066368196] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:55:04,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:55:04,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 8] total 19 [2024-11-27 19:55:04,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092444509] [2024-11-27 19:55:04,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:55:04,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:55:04,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:55:04,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:55:04,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-27 19:55:04,727 INFO L87 Difference]: Start difference. First operand 399 states and 559 transitions. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:55:05,356 INFO L93 Difference]: Finished difference Result 790 states and 1117 transitions. [2024-11-27 19:55:05,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:55:05,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2024-11-27 19:55:05,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:55:05,358 INFO L225 Difference]: With dead ends: 790 [2024-11-27 19:55:05,358 INFO L226 Difference]: Without dead ends: 453 [2024-11-27 19:55:05,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-27 19:55:05,358 INFO L435 NwaCegarLoop]: 424 mSDtfsCounter, 61 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:55:05,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1608 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:55:05,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-11-27 19:55:05,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 414. [2024-11-27 19:55:05,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.397094430992736) internal successors, (577), 413 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 577 transitions. [2024-11-27 19:55:05,364 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 577 transitions. Word has length 218 [2024-11-27 19:55:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:55:05,365 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 577 transitions. [2024-11-27 19:55:05,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 577 transitions. [2024-11-27 19:55:05,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-27 19:55:05,365 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:55:05,366 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:55:05,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-27 19:55:05,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:05,566 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:55:05,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:55:05,567 INFO L85 PathProgramCache]: Analyzing trace with hash -257037902, now seen corresponding path program 1 times [2024-11-27 19:55:05,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:55:05,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984755754] [2024-11-27 19:55:05,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:05,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:55:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:08,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:55:08,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984755754] [2024-11-27 19:55:08,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984755754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:55:08,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491786690] [2024-11-27 19:55:08,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:08,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:08,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:55:08,454 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:55:08,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-27 19:55:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:12,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 2397 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 19:55:12,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:55:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:13,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:55:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-27 19:55:13,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491786690] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:55:13,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:55:13,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 8] total 22 [2024-11-27 19:55:13,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646065756] [2024-11-27 19:55:13,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:55:13,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:55:13,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:55:13,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:55:13,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-11-27 19:55:13,432 INFO L87 Difference]: Start difference. First operand 414 states and 577 transitions. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:14,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:55:14,010 INFO L93 Difference]: Finished difference Result 839 states and 1177 transitions. [2024-11-27 19:55:14,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:55:14,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 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 219 [2024-11-27 19:55:14,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:55:14,012 INFO L225 Difference]: With dead ends: 839 [2024-11-27 19:55:14,012 INFO L226 Difference]: Without dead ends: 487 [2024-11-27 19:55:14,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-11-27 19:55:14,013 INFO L435 NwaCegarLoop]: 405 mSDtfsCounter, 90 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:55:14,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 1326 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:55:14,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2024-11-27 19:55:14,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 418. [2024-11-27 19:55:14,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.3980815347721822) internal successors, (583), 417 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:14,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 583 transitions. [2024-11-27 19:55:14,022 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 583 transitions. Word has length 219 [2024-11-27 19:55:14,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:55:14,022 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 583 transitions. [2024-11-27 19:55:14,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:14,023 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 583 transitions. [2024-11-27 19:55:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-27 19:55:14,024 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:55:14,024 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:55:14,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-27 19:55:14,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:14,224 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:55:14,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:55:14,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2082475057, now seen corresponding path program 1 times [2024-11-27 19:55:14,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:55:14,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644951090] [2024-11-27 19:55:14,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:14,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:55:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 14 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:17,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:55:17,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644951090] [2024-11-27 19:55:17,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644951090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:55:17,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172693531] [2024-11-27 19:55:17,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:17,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:17,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:55:17,427 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:55:17,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-27 19:55:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:20,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 2395 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 19:55:20,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:55:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-27 19:55:21,162 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:55:21,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172693531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:55:21,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:55:21,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2024-11-27 19:55:21,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84239820] [2024-11-27 19:55:21,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:55:21,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:55:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:55:21,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:55:21,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:55:21,165 INFO L87 Difference]: Start difference. First operand 418 states and 583 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:21,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:55:21,543 INFO L93 Difference]: Finished difference Result 796 states and 1124 transitions. [2024-11-27 19:55:21,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:55:21,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 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 219 [2024-11-27 19:55:21,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:55:21,545 INFO L225 Difference]: With dead ends: 796 [2024-11-27 19:55:21,545 INFO L226 Difference]: Without dead ends: 429 [2024-11-27 19:55:21,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:55:21,546 INFO L435 NwaCegarLoop]: 404 mSDtfsCounter, 32 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:55:21,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1069 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:55:21,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-27 19:55:21,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 416. [2024-11-27 19:55:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.3927710843373493) internal successors, (578), 415 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 578 transitions. [2024-11-27 19:55:21,554 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 578 transitions. Word has length 219 [2024-11-27 19:55:21,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:55:21,554 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 578 transitions. [2024-11-27 19:55:21,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:21,555 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 578 transitions. [2024-11-27 19:55:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-27 19:55:21,555 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:55:21,555 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:55:21,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-27 19:55:21,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:21,756 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:55:21,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:55:21,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1705119158, now seen corresponding path program 1 times [2024-11-27 19:55:21,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:55:21,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236199685] [2024-11-27 19:55:21,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:21,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:55:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:24,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:55:24,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236199685] [2024-11-27 19:55:24,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236199685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:55:24,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167966966] [2024-11-27 19:55:24,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:24,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:24,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:55:24,124 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:55:24,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-27 19:55:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:28,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 2398 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 19:55:28,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:55:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-27 19:55:28,727 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:55:28,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167966966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:55:28,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:55:28,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-27 19:55:28,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757923117] [2024-11-27 19:55:28,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:55:28,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:55:28,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:55:28,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:55:28,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:55:28,729 INFO L87 Difference]: Start difference. First operand 416 states and 578 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 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) [2024-11-27 19:55:29,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:55:29,229 INFO L93 Difference]: Finished difference Result 766 states and 1082 transitions. [2024-11-27 19:55:29,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:55:29,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 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) Word has length 220 [2024-11-27 19:55:29,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:55:29,231 INFO L225 Difference]: With dead ends: 766 [2024-11-27 19:55:29,231 INFO L226 Difference]: Without dead ends: 408 [2024-11-27 19:55:29,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 19:55:29,232 INFO L435 NwaCegarLoop]: 410 mSDtfsCounter, 26 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:55:29,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1308 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:55:29,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-11-27 19:55:29,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 395. [2024-11-27 19:55:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.398477157360406) internal successors, (551), 394 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:29,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 551 transitions. [2024-11-27 19:55:29,238 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 551 transitions. Word has length 220 [2024-11-27 19:55:29,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:55:29,238 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 551 transitions. [2024-11-27 19:55:29,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 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) [2024-11-27 19:55:29,239 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 551 transitions. [2024-11-27 19:55:29,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-27 19:55:29,240 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:55:29,240 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:55:29,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-27 19:55:29,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-27 19:55:29,441 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:55:29,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:55:29,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1732988998, now seen corresponding path program 1 times [2024-11-27 19:55:29,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:55:29,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719153955] [2024-11-27 19:55:29,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:29,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:55:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:32,251 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:32,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:55:32,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719153955] [2024-11-27 19:55:32,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719153955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:55:32,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536841643] [2024-11-27 19:55:32,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:32,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:32,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:55:32,253 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:55:32,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-27 19:55:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:36,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 2400 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-27 19:55:36,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:55:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:37,298 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:55:37,492 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 19:55:37,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536841643] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:55:37,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:55:37,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 8] total 21 [2024-11-27 19:55:37,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609558036] [2024-11-27 19:55:37,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:55:37,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:55:37,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:55:37,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:55:37,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-27 19:55:37,493 INFO L87 Difference]: Start difference. First operand 395 states and 551 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:38,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:55:38,268 INFO L93 Difference]: Finished difference Result 794 states and 1115 transitions. [2024-11-27 19:55:38,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:55:38,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 0 states have call successors, (0), 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 220 [2024-11-27 19:55:38,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:55:38,270 INFO L225 Difference]: With dead ends: 794 [2024-11-27 19:55:38,270 INFO L226 Difference]: Without dead ends: 457 [2024-11-27 19:55:38,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-27 19:55:38,271 INFO L435 NwaCegarLoop]: 399 mSDtfsCounter, 69 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:55:38,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1545 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:55:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-11-27 19:55:38,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 418. [2024-11-27 19:55:38,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.3884892086330936) internal successors, (579), 417 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:38,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 579 transitions. [2024-11-27 19:55:38,281 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 579 transitions. Word has length 220 [2024-11-27 19:55:38,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:55:38,282 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 579 transitions. [2024-11-27 19:55:38,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 579 transitions. [2024-11-27 19:55:38,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-27 19:55:38,283 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:55:38,284 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:55:38,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-27 19:55:38,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-11-27 19:55:38,485 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:55:38,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:55:38,485 INFO L85 PathProgramCache]: Analyzing trace with hash -143827402, now seen corresponding path program 1 times [2024-11-27 19:55:38,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:55:38,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795572553] [2024-11-27 19:55:38,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:38,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:55:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:41,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:55:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795572553] [2024-11-27 19:55:41,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795572553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:55:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746952133] [2024-11-27 19:55:41,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:41,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:41,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:55:41,592 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:55:41,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-27 19:55:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:46,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 2401 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 19:55:46,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:55:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 19:55:46,314 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:55:46,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746952133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:55:46,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:55:46,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2024-11-27 19:55:46,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262223818] [2024-11-27 19:55:46,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:55:46,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:55:46,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:55:46,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:55:46,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:55:46,316 INFO L87 Difference]: Start difference. First operand 418 states and 579 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:46,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:55:46,717 INFO L93 Difference]: Finished difference Result 788 states and 1106 transitions. [2024-11-27 19:55:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:55:46,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2024-11-27 19:55:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:55:46,719 INFO L225 Difference]: With dead ends: 788 [2024-11-27 19:55:46,719 INFO L226 Difference]: Without dead ends: 406 [2024-11-27 19:55:46,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:55:46,721 INFO L435 NwaCegarLoop]: 407 mSDtfsCounter, 38 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:55:46,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1820 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:55:46,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-27 19:55:46,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 393. [2024-11-27 19:55:46,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 1.3954081632653061) internal successors, (547), 392 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:46,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 547 transitions. [2024-11-27 19:55:46,728 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 547 transitions. Word has length 221 [2024-11-27 19:55:46,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:55:46,728 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 547 transitions. [2024-11-27 19:55:46,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:46,728 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 547 transitions. [2024-11-27 19:55:46,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-27 19:55:46,729 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:55:46,729 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:55:46,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-27 19:55:46,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-11-27 19:55:46,930 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:55:46,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:55:46,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1423068807, now seen corresponding path program 1 times [2024-11-27 19:55:46,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:55:46,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381430912] [2024-11-27 19:55:46,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:46,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:55:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 20 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:50,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:55:50,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381430912] [2024-11-27 19:55:50,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381430912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:55:50,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099748046] [2024-11-27 19:55:50,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:50,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:50,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:55:50,432 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:55:50,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-27 19:55:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:55,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 19:55:55,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:55:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-27 19:55:55,395 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:55:55,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099748046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:55:55,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:55:55,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2024-11-27 19:55:55,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422000703] [2024-11-27 19:55:55,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:55:55,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:55:55,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:55:55,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:55:55,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:55:55,396 INFO L87 Difference]: Start difference. First operand 393 states and 547 transitions. Second operand has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:56,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:55:56,064 INFO L93 Difference]: Finished difference Result 768 states and 1078 transitions. [2024-11-27 19:55:56,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:55:56,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2024-11-27 19:55:56,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:55:56,066 INFO L225 Difference]: With dead ends: 768 [2024-11-27 19:55:56,066 INFO L226 Difference]: Without dead ends: 404 [2024-11-27 19:55:56,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:55:56,067 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 43 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:55:56,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1497 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:55:56,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-27 19:55:56,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 391. [2024-11-27 19:55:56,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.3923076923076922) internal successors, (543), 390 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:56,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 543 transitions. [2024-11-27 19:55:56,076 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 543 transitions. Word has length 221 [2024-11-27 19:55:56,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:55:56,076 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 543 transitions. [2024-11-27 19:55:56,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:55:56,077 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 543 transitions. [2024-11-27 19:55:56,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-27 19:55:56,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:55:56,078 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:55:56,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-27 19:55:56,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-11-27 19:55:56,279 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:55:56,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:55:56,279 INFO L85 PathProgramCache]: Analyzing trace with hash 587507711, now seen corresponding path program 1 times [2024-11-27 19:55:56,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:55:56,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257074977] [2024-11-27 19:55:56,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:56,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:55:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:55:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:55:59,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:55:59,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257074977] [2024-11-27 19:55:59,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257074977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:55:59,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482710905] [2024-11-27 19:55:59,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:55:59,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:59,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:55:59,013 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:55:59,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-27 19:56:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:03,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 2406 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 19:56:03,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:56:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-27 19:56:04,101 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:56:04,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482710905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:56:04,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:56:04,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2024-11-27 19:56:04,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922045618] [2024-11-27 19:56:04,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:56:04,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:56:04,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:56:04,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:56:04,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:56:04,103 INFO L87 Difference]: Start difference. First operand 391 states and 543 transitions. Second operand has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:04,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:56:04,770 INFO L93 Difference]: Finished difference Result 770 states and 1077 transitions. [2024-11-27 19:56:04,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:56:04,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2024-11-27 19:56:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:56:04,772 INFO L225 Difference]: With dead ends: 770 [2024-11-27 19:56:04,772 INFO L226 Difference]: Without dead ends: 402 [2024-11-27 19:56:04,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-27 19:56:04,774 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 47 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:56:04,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1485 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:56:04,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-11-27 19:56:04,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 389. [2024-11-27 19:56:04,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.3891752577319587) internal successors, (539), 388 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:04,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 539 transitions. [2024-11-27 19:56:04,780 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 539 transitions. Word has length 222 [2024-11-27 19:56:04,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:56:04,780 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 539 transitions. [2024-11-27 19:56:04,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:04,780 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 539 transitions. [2024-11-27 19:56:04,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-27 19:56:04,781 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:56:04,781 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:56:04,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-27 19:56:04,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-27 19:56:04,982 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:56:04,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:56:04,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1444010432, now seen corresponding path program 1 times [2024-11-27 19:56:04,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:56:04,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413897109] [2024-11-27 19:56:04,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:04,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:56:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:56:07,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:56:07,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413897109] [2024-11-27 19:56:07,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413897109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:56:07,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888564228] [2024-11-27 19:56:07,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:07,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:07,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:56:07,815 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:56:07,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-27 19:56:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:12,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 2409 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-27 19:56:12,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:56:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:56:13,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:56:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-27 19:56:13,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888564228] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:56:13,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:56:13,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 8] total 21 [2024-11-27 19:56:13,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893486888] [2024-11-27 19:56:13,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:56:13,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:56:13,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:56:13,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:56:13,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-27 19:56:13,382 INFO L87 Difference]: Start difference. First operand 389 states and 539 transitions. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:14,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:56:14,102 INFO L93 Difference]: Finished difference Result 800 states and 1112 transitions. [2024-11-27 19:56:14,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:56:14,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2024-11-27 19:56:14,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:56:14,104 INFO L225 Difference]: With dead ends: 800 [2024-11-27 19:56:14,104 INFO L226 Difference]: Without dead ends: 463 [2024-11-27 19:56:14,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-27 19:56:14,105 INFO L435 NwaCegarLoop]: 381 mSDtfsCounter, 81 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:56:14,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1509 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:56:14,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-27 19:56:14,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 424. [2024-11-27 19:56:14,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 1.375886524822695) internal successors, (582), 423 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:14,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 582 transitions. [2024-11-27 19:56:14,109 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 582 transitions. Word has length 223 [2024-11-27 19:56:14,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:56:14,110 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 582 transitions. [2024-11-27 19:56:14,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:14,110 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 582 transitions. [2024-11-27 19:56:14,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-27 19:56:14,111 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:56:14,111 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:56:14,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-27 19:56:14,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:14,311 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:56:14,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:56:14,312 INFO L85 PathProgramCache]: Analyzing trace with hash 153438076, now seen corresponding path program 1 times [2024-11-27 19:56:14,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:56:14,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653976131] [2024-11-27 19:56:14,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:14,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:56:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:56:17,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:56:17,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653976131] [2024-11-27 19:56:17,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653976131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:56:17,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968289764] [2024-11-27 19:56:17,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:17,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:17,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:56:17,933 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:56:17,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-27 19:56:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:22,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 2410 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 19:56:22,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:56:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-27 19:56:23,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:56:23,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968289764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:56:23,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:56:23,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2024-11-27 19:56:23,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803431588] [2024-11-27 19:56:23,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:56:23,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:56:23,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:56:23,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:56:23,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:56:23,122 INFO L87 Difference]: Start difference. First operand 424 states and 582 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:56:23,577 INFO L93 Difference]: Finished difference Result 803 states and 1114 transitions. [2024-11-27 19:56:23,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:56:23,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 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 224 [2024-11-27 19:56:23,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:56:23,578 INFO L225 Difference]: With dead ends: 803 [2024-11-27 19:56:23,578 INFO L226 Difference]: Without dead ends: 400 [2024-11-27 19:56:23,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:56:23,579 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 48 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:56:23,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1217 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:56:23,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-27 19:56:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 387. [2024-11-27 19:56:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.3860103626943006) internal successors, (535), 386 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 535 transitions. [2024-11-27 19:56:23,587 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 535 transitions. Word has length 224 [2024-11-27 19:56:23,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:56:23,588 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 535 transitions. [2024-11-27 19:56:23,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:23,588 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 535 transitions. [2024-11-27 19:56:23,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-27 19:56:23,589 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:56:23,589 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:56:23,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-27 19:56:23,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:23,790 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:56:23,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:56:23,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1354532168, now seen corresponding path program 1 times [2024-11-27 19:56:23,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:56:23,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477651056] [2024-11-27 19:56:23,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:23,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:56:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:56:26,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:56:26,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477651056] [2024-11-27 19:56:26,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477651056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:56:26,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379260012] [2024-11-27 19:56:26,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:26,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:26,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:56:26,520 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:56:26,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-27 19:56:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:30,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 2412 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 19:56:30,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:56:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 19:56:30,955 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:56:30,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379260012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:56:30,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:56:30,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2024-11-27 19:56:30,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010079702] [2024-11-27 19:56:30,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:56:30,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:56:30,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:56:30,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:56:30,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:56:30,957 INFO L87 Difference]: Start difference. First operand 387 states and 535 transitions. Second operand has 7 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:31,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:56:31,462 INFO L93 Difference]: Finished difference Result 774 states and 1075 transitions. [2024-11-27 19:56:31,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:56:31,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 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 224 [2024-11-27 19:56:31,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:56:31,464 INFO L225 Difference]: With dead ends: 774 [2024-11-27 19:56:31,464 INFO L226 Difference]: Without dead ends: 398 [2024-11-27 19:56:31,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:56:31,465 INFO L435 NwaCegarLoop]: 364 mSDtfsCounter, 73 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:56:31,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 1244 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:56:31,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-27 19:56:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 385. [2024-11-27 19:56:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.3828125) internal successors, (531), 384 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 531 transitions. [2024-11-27 19:56:31,472 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 531 transitions. Word has length 224 [2024-11-27 19:56:31,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:56:31,472 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 531 transitions. [2024-11-27 19:56:31,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:31,472 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 531 transitions. [2024-11-27 19:56:31,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-27 19:56:31,473 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:56:31,473 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:56:31,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-27 19:56:31,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2024-11-27 19:56:31,674 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:56:31,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:56:31,674 INFO L85 PathProgramCache]: Analyzing trace with hash 469432327, now seen corresponding path program 1 times [2024-11-27 19:56:31,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:56:31,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141259502] [2024-11-27 19:56:31,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:31,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:56:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:56:34,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:56:34,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141259502] [2024-11-27 19:56:34,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141259502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:56:34,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752343402] [2024-11-27 19:56:34,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:34,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:34,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:56:34,172 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:56:34,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-27 19:56:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:38,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 2415 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 19:56:38,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:56:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-27 19:56:38,804 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:56:38,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752343402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:56:38,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:56:38,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2024-11-27 19:56:38,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341020711] [2024-11-27 19:56:38,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:56:38,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:56:38,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:56:38,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:56:38,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:56:38,805 INFO L87 Difference]: Start difference. First operand 385 states and 531 transitions. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:39,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:56:39,341 INFO L93 Difference]: Finished difference Result 776 states and 1074 transitions. [2024-11-27 19:56:39,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:56:39,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2024-11-27 19:56:39,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:56:39,343 INFO L225 Difference]: With dead ends: 776 [2024-11-27 19:56:39,343 INFO L226 Difference]: Without dead ends: 396 [2024-11-27 19:56:39,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-27 19:56:39,344 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 79 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:56:39,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1218 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:56:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-27 19:56:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 383. [2024-11-27 19:56:39,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.3795811518324608) internal successors, (527), 382 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:39,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 527 transitions. [2024-11-27 19:56:39,350 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 527 transitions. Word has length 225 [2024-11-27 19:56:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:56:39,350 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 527 transitions. [2024-11-27 19:56:39,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 527 transitions. [2024-11-27 19:56:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-27 19:56:39,352 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:56:39,352 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:56:39,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-27 19:56:39,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:39,552 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:56:39,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:56:39,553 INFO L85 PathProgramCache]: Analyzing trace with hash -907274127, now seen corresponding path program 1 times [2024-11-27 19:56:39,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:56:39,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439500239] [2024-11-27 19:56:39,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:39,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:56:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:56:41,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:56:41,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439500239] [2024-11-27 19:56:41,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439500239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:56:41,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295103763] [2024-11-27 19:56:41,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:41,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:41,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:56:41,866 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:56:41,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-27 19:56:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:46,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 19:56:46,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:56:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:56:46,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:56:46,936 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-27 19:56:46,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295103763] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:56:46,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:56:46,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 8] total 21 [2024-11-27 19:56:46,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685568963] [2024-11-27 19:56:46,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:56:46,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:56:46,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:56:46,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:56:46,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-27 19:56:46,938 INFO L87 Difference]: Start difference. First operand 383 states and 527 transitions. Second operand has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:47,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:56:47,483 INFO L93 Difference]: Finished difference Result 806 states and 1109 transitions. [2024-11-27 19:56:47,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:56:47,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 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 226 [2024-11-27 19:56:47,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:56:47,484 INFO L225 Difference]: With dead ends: 806 [2024-11-27 19:56:47,484 INFO L226 Difference]: Without dead ends: 469 [2024-11-27 19:56:47,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-27 19:56:47,485 INFO L435 NwaCegarLoop]: 363 mSDtfsCounter, 131 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:56:47,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1242 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:56:47,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2024-11-27 19:56:47,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 430. [2024-11-27 19:56:47,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.3636363636363635) internal successors, (585), 429 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:47,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 585 transitions. [2024-11-27 19:56:47,490 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 585 transitions. Word has length 226 [2024-11-27 19:56:47,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:56:47,490 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 585 transitions. [2024-11-27 19:56:47,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:47,490 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 585 transitions. [2024-11-27 19:56:47,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-27 19:56:47,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:56:47,491 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:56:47,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-27 19:56:47,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:47,692 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:56:47,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:56:47,692 INFO L85 PathProgramCache]: Analyzing trace with hash -387605653, now seen corresponding path program 1 times [2024-11-27 19:56:47,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:56:47,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497279259] [2024-11-27 19:56:47,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:47,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:56:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:56:50,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:56:50,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497279259] [2024-11-27 19:56:50,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497279259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:56:50,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315279122] [2024-11-27 19:56:50,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:50,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:50,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:56:50,077 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:56:50,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-27 19:56:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:54,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 2419 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 19:56:54,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:56:54,736 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-27 19:56:54,736 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:56:54,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315279122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:56:54,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:56:54,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2024-11-27 19:56:54,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877501423] [2024-11-27 19:56:54,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:56:54,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:56:54,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:56:54,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:56:54,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:56:54,737 INFO L87 Difference]: Start difference. First operand 430 states and 585 transitions. Second operand has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:55,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:56:55,234 INFO L93 Difference]: Finished difference Result 821 states and 1126 transitions. [2024-11-27 19:56:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:56:55,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2024-11-27 19:56:55,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:56:55,236 INFO L225 Difference]: With dead ends: 821 [2024-11-27 19:56:55,236 INFO L226 Difference]: Without dead ends: 394 [2024-11-27 19:56:55,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:56:55,237 INFO L435 NwaCegarLoop]: 356 mSDtfsCounter, 60 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:56:55,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1184 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:56:55,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-27 19:56:55,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 381. [2024-11-27 19:56:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.3763157894736842) internal successors, (523), 380 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 523 transitions. [2024-11-27 19:56:55,242 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 523 transitions. Word has length 227 [2024-11-27 19:56:55,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:56:55,243 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 523 transitions. [2024-11-27 19:56:55,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:56:55,243 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 523 transitions. [2024-11-27 19:56:55,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-27 19:56:55,244 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:56:55,244 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:56:55,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-27 19:56:55,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:55,444 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:56:55,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:56:55,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1975527730, now seen corresponding path program 1 times [2024-11-27 19:56:55,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:56:55,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470690981] [2024-11-27 19:56:55,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:55,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:56:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:56:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 32 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:56:58,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:56:58,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470690981] [2024-11-27 19:56:58,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470690981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:56:58,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11152489] [2024-11-27 19:56:58,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:56:58,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:58,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:56:58,064 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:56:58,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-27 19:57:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:02,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 2421 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 19:57:02,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:57:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:57:03,180 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:57:03,386 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 19:57:03,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11152489] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:57:03,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:57:03,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 8] total 22 [2024-11-27 19:57:03,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448518343] [2024-11-27 19:57:03,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:57:03,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:57:03,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:57:03,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:57:03,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-11-27 19:57:03,387 INFO L87 Difference]: Start difference. First operand 381 states and 523 transitions. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:03,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:57:03,984 INFO L93 Difference]: Finished difference Result 808 states and 1108 transitions. [2024-11-27 19:57:03,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:57:03,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 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 227 [2024-11-27 19:57:03,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:57:03,985 INFO L225 Difference]: With dead ends: 808 [2024-11-27 19:57:03,985 INFO L226 Difference]: Without dead ends: 471 [2024-11-27 19:57:03,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-11-27 19:57:03,986 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 97 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:57:03,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1461 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:57:03,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-11-27 19:57:03,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 432. [2024-11-27 19:57:03,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 1.359628770301624) internal successors, (586), 431 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 586 transitions. [2024-11-27 19:57:03,991 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 586 transitions. Word has length 227 [2024-11-27 19:57:03,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:57:03,991 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 586 transitions. [2024-11-27 19:57:03,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:03,992 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 586 transitions. [2024-11-27 19:57:03,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-27 19:57:03,993 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:57:03,993 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:57:04,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-27 19:57:04,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:04,193 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:57:04,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:57:04,194 INFO L85 PathProgramCache]: Analyzing trace with hash 856271022, now seen corresponding path program 1 times [2024-11-27 19:57:04,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:57:04,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641972641] [2024-11-27 19:57:04,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:04,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:57:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 32 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:57:07,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:57:07,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641972641] [2024-11-27 19:57:07,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641972641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:57:07,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26459356] [2024-11-27 19:57:07,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:07,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:07,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:57:07,627 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:57:07,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-27 19:57:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:12,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 19:57:12,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:57:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 19:57:12,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:57:12,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26459356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:57:12,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:57:12,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2024-11-27 19:57:12,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075558918] [2024-11-27 19:57:12,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:57:12,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:57:12,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:57:12,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:57:12,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:57:12,392 INFO L87 Difference]: Start difference. First operand 432 states and 586 transitions. Second operand has 6 states, 6 states have (on average 33.333333333333336) internal successors, (200), 6 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:57:12,727 INFO L93 Difference]: Finished difference Result 830 states and 1134 transitions. [2024-11-27 19:57:12,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:57:12,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.333333333333336) internal successors, (200), 6 states have internal predecessors, (200), 0 states have call successors, (0), 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 228 [2024-11-27 19:57:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:57:12,728 INFO L225 Difference]: With dead ends: 830 [2024-11-27 19:57:12,728 INFO L226 Difference]: Without dead ends: 392 [2024-11-27 19:57:12,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:57:12,729 INFO L435 NwaCegarLoop]: 393 mSDtfsCounter, 90 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:57:12,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 1415 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 19:57:12,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-27 19:57:12,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 379. [2024-11-27 19:57:12,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.373015873015873) internal successors, (519), 378 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:12,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 519 transitions. [2024-11-27 19:57:12,734 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 519 transitions. Word has length 228 [2024-11-27 19:57:12,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:57:12,734 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 519 transitions. [2024-11-27 19:57:12,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.333333333333336) internal successors, (200), 6 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:12,734 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 519 transitions. [2024-11-27 19:57:12,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-27 19:57:12,735 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:57:12,735 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:57:12,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-27 19:57:12,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:12,936 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:57:12,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:57:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash 260231466, now seen corresponding path program 1 times [2024-11-27 19:57:12,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:57:12,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562593518] [2024-11-27 19:57:12,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:12,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:57:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:57:14,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:57:14,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562593518] [2024-11-27 19:57:14,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562593518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:57:14,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485241406] [2024-11-27 19:57:14,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:14,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:14,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:57:14,878 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:57:14,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-27 19:57:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:19,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 2424 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-27 19:57:19,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:57:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:57:19,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:57:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-27 19:57:20,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485241406] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:57:20,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:57:20,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 8] total 19 [2024-11-27 19:57:20,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716915768] [2024-11-27 19:57:20,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:57:20,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:57:20,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:57:20,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:57:20,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-27 19:57:20,167 INFO L87 Difference]: Start difference. First operand 379 states and 519 transitions. Second operand has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:20,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:57:20,708 INFO L93 Difference]: Finished difference Result 810 states and 1107 transitions. [2024-11-27 19:57:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:57:20,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 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 228 [2024-11-27 19:57:20,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:57:20,709 INFO L225 Difference]: With dead ends: 810 [2024-11-27 19:57:20,709 INFO L226 Difference]: Without dead ends: 473 [2024-11-27 19:57:20,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-27 19:57:20,710 INFO L435 NwaCegarLoop]: 351 mSDtfsCounter, 143 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:57:20,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1218 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:57:20,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-11-27 19:57:20,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 434. [2024-11-27 19:57:20,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 1.3556581986143188) internal successors, (587), 433 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 587 transitions. [2024-11-27 19:57:20,715 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 587 transitions. Word has length 228 [2024-11-27 19:57:20,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:57:20,715 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 587 transitions. [2024-11-27 19:57:20,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:20,716 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 587 transitions. [2024-11-27 19:57:20,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-27 19:57:20,717 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:57:20,717 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:57:20,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-27 19:57:20,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:20,917 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:57:20,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:57:20,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1445329362, now seen corresponding path program 1 times [2024-11-27 19:57:20,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:57:20,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258047906] [2024-11-27 19:57:20,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:20,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:57:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 34 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:57:23,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:57:23,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258047906] [2024-11-27 19:57:23,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258047906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:57:23,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936914901] [2024-11-27 19:57:23,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:23,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:23,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:57:23,676 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:57:23,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-27 19:57:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:28,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 19:57:28,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:57:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:57:28,827 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:57:29,037 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 19:57:29,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936914901] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:57:29,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:57:29,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 7] total 18 [2024-11-27 19:57:29,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373535224] [2024-11-27 19:57:29,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:57:29,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:57:29,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:57:29,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:57:29,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2024-11-27 19:57:29,039 INFO L87 Difference]: Start difference. First operand 434 states and 587 transitions. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:29,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:57:29,493 INFO L93 Difference]: Finished difference Result 1011 states and 1371 transitions. [2024-11-27 19:57:29,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:57:29,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 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 229 [2024-11-27 19:57:29,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:57:29,495 INFO L225 Difference]: With dead ends: 1011 [2024-11-27 19:57:29,495 INFO L226 Difference]: Without dead ends: 445 [2024-11-27 19:57:29,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-27 19:57:29,495 INFO L435 NwaCegarLoop]: 379 mSDtfsCounter, 124 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:57:29,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1727 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 19:57:29,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-11-27 19:57:29,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 410. [2024-11-27 19:57:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.3447432762836187) internal successors, (550), 409 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:29,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 550 transitions. [2024-11-27 19:57:29,500 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 550 transitions. Word has length 229 [2024-11-27 19:57:29,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:57:29,500 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 550 transitions. [2024-11-27 19:57:29,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:29,500 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 550 transitions. [2024-11-27 19:57:29,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-27 19:57:29,501 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:57:29,501 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:57:29,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-27 19:57:29,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-11-27 19:57:29,701 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:57:29,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:57:29,702 INFO L85 PathProgramCache]: Analyzing trace with hash 418914266, now seen corresponding path program 1 times [2024-11-27 19:57:29,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:57:29,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79683026] [2024-11-27 19:57:29,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:29,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:57:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:57:32,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:57:32,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79683026] [2024-11-27 19:57:32,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79683026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:57:32,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732446785] [2024-11-27 19:57:32,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:32,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:32,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:57:32,832 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:57:32,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-27 19:57:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:37,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 2428 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 19:57:37,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:57:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:57:37,786 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:57:37,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732446785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:57:37,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:57:37,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2024-11-27 19:57:37,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899047684] [2024-11-27 19:57:37,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:57:37,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:57:37,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:57:37,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:57:37,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:57:37,788 INFO L87 Difference]: Start difference. First operand 410 states and 550 transitions. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:38,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:57:38,306 INFO L93 Difference]: Finished difference Result 812 states and 1088 transitions. [2024-11-27 19:57:38,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:57:38,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 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 230 [2024-11-27 19:57:38,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:57:38,308 INFO L225 Difference]: With dead ends: 812 [2024-11-27 19:57:38,308 INFO L226 Difference]: Without dead ends: 366 [2024-11-27 19:57:38,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-27 19:57:38,308 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 537 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:57:38,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1011 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:57:38,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-27 19:57:38,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 355. [2024-11-27 19:57:38,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.3587570621468927) internal successors, (481), 354 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:38,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 481 transitions. [2024-11-27 19:57:38,313 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 481 transitions. Word has length 230 [2024-11-27 19:57:38,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:57:38,313 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 481 transitions. [2024-11-27 19:57:38,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:38,313 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 481 transitions. [2024-11-27 19:57:38,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-27 19:57:38,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:57:38,314 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:57:38,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-27 19:57:38,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:38,515 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:57:38,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:57:38,515 INFO L85 PathProgramCache]: Analyzing trace with hash -379938659, now seen corresponding path program 1 times [2024-11-27 19:57:38,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:57:38,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512286010] [2024-11-27 19:57:38,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:38,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:57:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:57:41,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:57:41,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512286010] [2024-11-27 19:57:41,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512286010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:57:41,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728015878] [2024-11-27 19:57:41,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:41,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:41,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:57:41,548 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:57:41,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-27 19:57:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:46,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 19:57:46,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:57:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:57:46,771 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:57:46,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728015878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:57:46,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:57:46,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2024-11-27 19:57:46,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973145282] [2024-11-27 19:57:46,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:57:46,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:57:46,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:57:46,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:57:46,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:57:46,772 INFO L87 Difference]: Start difference. First operand 355 states and 481 transitions. Second operand has 7 states, 7 states have (on average 32.142857142857146) internal successors, (225), 7 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:47,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:57:47,451 INFO L93 Difference]: Finished difference Result 762 states and 1024 transitions. [2024-11-27 19:57:47,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:57:47,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.142857142857146) internal successors, (225), 7 states have internal predecessors, (225), 0 states have call successors, (0), 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 230 [2024-11-27 19:57:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:57:47,452 INFO L225 Difference]: With dead ends: 762 [2024-11-27 19:57:47,452 INFO L226 Difference]: Without dead ends: 367 [2024-11-27 19:57:47,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:57:47,453 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 449 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:57:47,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1266 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:57:47,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-27 19:57:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 355. [2024-11-27 19:57:47,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.3559322033898304) internal successors, (480), 354 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:47,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 480 transitions. [2024-11-27 19:57:47,457 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 480 transitions. Word has length 230 [2024-11-27 19:57:47,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:57:47,457 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 480 transitions. [2024-11-27 19:57:47,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.142857142857146) internal successors, (225), 7 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:47,458 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 480 transitions. [2024-11-27 19:57:47,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-27 19:57:47,459 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:57:47,459 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:57:47,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-27 19:57:47,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:47,659 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:57:47,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:57:47,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1013018661, now seen corresponding path program 1 times [2024-11-27 19:57:47,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:57:47,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036732761] [2024-11-27 19:57:47,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:47,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:57:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:50,458 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:57:50,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:57:50,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036732761] [2024-11-27 19:57:50,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036732761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:57:50,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194387522] [2024-11-27 19:57:50,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:50,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:50,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:57:50,461 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:57:50,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-27 19:57:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:55,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 2433 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 19:57:55,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:57:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:57:56,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:57:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:57:56,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194387522] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:57:56,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:57:56,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 8] total 22 [2024-11-27 19:57:56,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014064342] [2024-11-27 19:57:56,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:57:56,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:57:56,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:57:56,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:57:56,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-11-27 19:57:56,414 INFO L87 Difference]: Start difference. First operand 355 states and 480 transitions. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:57,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:57:57,137 INFO L93 Difference]: Finished difference Result 931 states and 1268 transitions. [2024-11-27 19:57:57,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:57:57,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2024-11-27 19:57:57,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:57:57,139 INFO L225 Difference]: With dead ends: 931 [2024-11-27 19:57:57,139 INFO L226 Difference]: Without dead ends: 594 [2024-11-27 19:57:57,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2024-11-27 19:57:57,139 INFO L435 NwaCegarLoop]: 526 mSDtfsCounter, 492 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:57:57,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1712 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:57:57,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-27 19:57:57,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 418. [2024-11-27 19:57:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.3381294964028776) internal successors, (558), 417 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 558 transitions. [2024-11-27 19:57:57,145 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 558 transitions. Word has length 231 [2024-11-27 19:57:57,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:57:57,145 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 558 transitions. [2024-11-27 19:57:57,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:57:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 558 transitions. [2024-11-27 19:57:57,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-27 19:57:57,146 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:57:57,146 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:57:57,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-27 19:57:57,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:57,346 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:57:57,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:57:57,347 INFO L85 PathProgramCache]: Analyzing trace with hash 629281089, now seen corresponding path program 1 times [2024-11-27 19:57:57,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:57:57,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754659868] [2024-11-27 19:57:57,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:57,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:57:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:57:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:57:59,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:57:59,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754659868] [2024-11-27 19:57:59,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754659868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:57:59,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072003973] [2024-11-27 19:57:59,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:57:59,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:59,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:57:59,969 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:57:59,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-27 19:58:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:58:05,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-27 19:58:05,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:58:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:58:05,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:58:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 19:58:06,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072003973] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:58:06,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:58:06,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12, 8] total 23 [2024-11-27 19:58:06,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316185137] [2024-11-27 19:58:06,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:58:06,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:58:06,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:58:06,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:58:06,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2024-11-27 19:58:06,004 INFO L87 Difference]: Start difference. First operand 418 states and 558 transitions. Second operand has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 7 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:06,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:58:06,700 INFO L93 Difference]: Finished difference Result 848 states and 1129 transitions. [2024-11-27 19:58:06,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 19:58:06,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 7 states have internal predecessors, (211), 0 states have call successors, (0), 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 232 [2024-11-27 19:58:06,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:58:06,702 INFO L225 Difference]: With dead ends: 848 [2024-11-27 19:58:06,702 INFO L226 Difference]: Without dead ends: 446 [2024-11-27 19:58:06,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2024-11-27 19:58:06,703 INFO L435 NwaCegarLoop]: 338 mSDtfsCounter, 83 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:58:06,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1746 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:58:06,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-27 19:58:06,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 418. [2024-11-27 19:58:06,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.3357314148681054) internal successors, (557), 417 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:06,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 557 transitions. [2024-11-27 19:58:06,710 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 557 transitions. Word has length 232 [2024-11-27 19:58:06,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:58:06,711 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 557 transitions. [2024-11-27 19:58:06,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 7 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:06,711 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 557 transitions. [2024-11-27 19:58:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-27 19:58:06,712 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:58:06,712 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:58:06,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-27 19:58:06,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:58:06,913 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:58:06,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:58:06,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1902198628, now seen corresponding path program 1 times [2024-11-27 19:58:06,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:58:06,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452604329] [2024-11-27 19:58:06,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:58:06,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:58:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:58:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:58:10,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:58:10,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452604329] [2024-11-27 19:58:10,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452604329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:58:10,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217082198] [2024-11-27 19:58:10,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:58:10,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:58:10,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:58:10,097 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:58:10,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-27 19:58:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:58:15,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 2436 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 19:58:15,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:58:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:58:15,921 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:58:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:58:16,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217082198] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:58:16,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:58:16,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 8] total 21 [2024-11-27 19:58:16,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119618557] [2024-11-27 19:58:16,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:58:16,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:58:16,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:58:16,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:58:16,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-27 19:58:16,252 INFO L87 Difference]: Start difference. First operand 418 states and 557 transitions. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:16,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:58:16,903 INFO L93 Difference]: Finished difference Result 1124 states and 1505 transitions. [2024-11-27 19:58:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:58:16,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 0 states have call successors, (0), 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 232 [2024-11-27 19:58:16,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:58:16,905 INFO L225 Difference]: With dead ends: 1124 [2024-11-27 19:58:16,905 INFO L226 Difference]: Without dead ends: 724 [2024-11-27 19:58:16,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-27 19:58:16,906 INFO L435 NwaCegarLoop]: 526 mSDtfsCounter, 498 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:58:16,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1711 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:58:16,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-11-27 19:58:16,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 481. [2024-11-27 19:58:16,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.3270833333333334) internal successors, (637), 480 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:16,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 637 transitions. [2024-11-27 19:58:16,912 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 637 transitions. Word has length 232 [2024-11-27 19:58:16,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:58:16,913 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 637 transitions. [2024-11-27 19:58:16,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:16,913 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 637 transitions. [2024-11-27 19:58:16,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-27 19:58:16,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:58:16,914 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:58:16,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-27 19:58:17,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:58:17,115 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:58:17,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:58:17,115 INFO L85 PathProgramCache]: Analyzing trace with hash 159568316, now seen corresponding path program 1 times [2024-11-27 19:58:17,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:58:17,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255478328] [2024-11-27 19:58:17,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:58:17,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:58:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:58:19,855 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:58:19,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:58:19,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255478328] [2024-11-27 19:58:19,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255478328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:58:19,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587358607] [2024-11-27 19:58:19,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:58:19,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:58:19,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:58:19,857 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:58:19,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-27 19:58:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:58:25,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 2435 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 19:58:25,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:58:25,375 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:58:25,375 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:58:25,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587358607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:58:25,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:58:25,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2024-11-27 19:58:25,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081963914] [2024-11-27 19:58:25,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:58:25,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:58:25,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:58:25,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:58:25,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:58:25,377 INFO L87 Difference]: Start difference. First operand 481 states and 637 transitions. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:26,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:58:26,083 INFO L93 Difference]: Finished difference Result 951 states and 1258 transitions. [2024-11-27 19:58:26,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:58:26,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 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 233 [2024-11-27 19:58:26,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:58:26,084 INFO L225 Difference]: With dead ends: 951 [2024-11-27 19:58:26,085 INFO L226 Difference]: Without dead ends: 434 [2024-11-27 19:58:26,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:58:26,086 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 506 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:58:26,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1251 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:58:26,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-27 19:58:26,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 422. [2024-11-27 19:58:26,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.334916864608076) internal successors, (562), 421 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:26,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 562 transitions. [2024-11-27 19:58:26,094 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 562 transitions. Word has length 233 [2024-11-27 19:58:26,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:58:26,094 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 562 transitions. [2024-11-27 19:58:26,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:26,094 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 562 transitions. [2024-11-27 19:58:26,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-27 19:58:26,095 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:58:26,095 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:58:26,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-27 19:58:26,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2024-11-27 19:58:26,296 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:58:26,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:58:26,296 INFO L85 PathProgramCache]: Analyzing trace with hash 806703832, now seen corresponding path program 1 times [2024-11-27 19:58:26,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:58:26,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582177322] [2024-11-27 19:58:26,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:58:26,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:58:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:58:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:58:28,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:58:28,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582177322] [2024-11-27 19:58:28,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582177322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:58:28,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574649421] [2024-11-27 19:58:28,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:58:28,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:58:28,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:58:28,042 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:58:28,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-27 19:58:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:58:33,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 19:58:33,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:58:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:58:33,692 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:58:33,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574649421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:58:33,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:58:33,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-27 19:58:33,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102419852] [2024-11-27 19:58:33,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:58:33,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:58:33,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:58:33,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:58:33,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:58:33,693 INFO L87 Difference]: Start difference. First operand 422 states and 562 transitions. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:58:34,358 INFO L93 Difference]: Finished difference Result 833 states and 1108 transitions. [2024-11-27 19:58:34,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:58:34,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 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 233 [2024-11-27 19:58:34,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:58:34,359 INFO L225 Difference]: With dead ends: 833 [2024-11-27 19:58:34,359 INFO L226 Difference]: Without dead ends: 367 [2024-11-27 19:58:34,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:58:34,360 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 453 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:58:34,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1250 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:58:34,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-27 19:58:34,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 355. [2024-11-27 19:58:34,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.3502824858757063) internal successors, (478), 354 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 478 transitions. [2024-11-27 19:58:34,364 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 478 transitions. Word has length 233 [2024-11-27 19:58:34,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:58:34,364 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 478 transitions. [2024-11-27 19:58:34,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:34,364 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 478 transitions. [2024-11-27 19:58:34,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-27 19:58:34,365 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:58:34,365 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:58:34,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-27 19:58:34,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2024-11-27 19:58:34,566 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:58:34,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:58:34,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1847357292, now seen corresponding path program 1 times [2024-11-27 19:58:34,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:58:34,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725863867] [2024-11-27 19:58:34,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:58:34,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:58:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:58:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:58:37,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:58:37,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725863867] [2024-11-27 19:58:37,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725863867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:58:37,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496854764] [2024-11-27 19:58:37,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:58:37,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:58:37,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:58:37,261 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:58:37,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-27 19:58:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:58:42,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 2439 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 19:58:42,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:58:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:58:43,067 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:58:43,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496854764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:58:43,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:58:43,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2024-11-27 19:58:43,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903987796] [2024-11-27 19:58:43,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:58:43,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:58:43,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:58:43,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:58:43,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:58:43,068 INFO L87 Difference]: Start difference. First operand 355 states and 478 transitions. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:58:43,726 INFO L93 Difference]: Finished difference Result 774 states and 1033 transitions. [2024-11-27 19:58:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:58:43,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 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 233 [2024-11-27 19:58:43,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:58:43,727 INFO L225 Difference]: With dead ends: 774 [2024-11-27 19:58:43,727 INFO L226 Difference]: Without dead ends: 367 [2024-11-27 19:58:43,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-27 19:58:43,728 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 459 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:58:43,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 1257 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:58:43,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-27 19:58:43,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 355. [2024-11-27 19:58:43,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.347457627118644) internal successors, (477), 354 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:43,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 477 transitions. [2024-11-27 19:58:43,733 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 477 transitions. Word has length 233 [2024-11-27 19:58:43,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:58:43,733 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 477 transitions. [2024-11-27 19:58:43,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 477 transitions. [2024-11-27 19:58:43,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-27 19:58:43,734 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:58:43,734 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:58:43,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-11-27 19:58:43,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-11-27 19:58:43,935 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:58:43,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:58:43,935 INFO L85 PathProgramCache]: Analyzing trace with hash -126647509, now seen corresponding path program 1 times [2024-11-27 19:58:43,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:58:43,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748319080] [2024-11-27 19:58:43,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:58:43,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:58:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:58:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:58:45,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:58:45,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748319080] [2024-11-27 19:58:45,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748319080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:58:45,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736665500] [2024-11-27 19:58:45,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:58:45,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:58:45,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:58:45,818 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:58:45,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-27 19:58:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:58:51,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 2442 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 19:58:51,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:58:51,771 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:58:51,771 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:58:51,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736665500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:58:51,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:58:51,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-27 19:58:51,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521469261] [2024-11-27 19:58:51,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:58:51,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:58:51,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:58:51,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:58:51,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:58:51,772 INFO L87 Difference]: Start difference. First operand 355 states and 477 transitions. Second operand has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:52,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:58:52,378 INFO L93 Difference]: Finished difference Result 778 states and 1036 transitions. [2024-11-27 19:58:52,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:58:52,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 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 234 [2024-11-27 19:58:52,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:58:52,380 INFO L225 Difference]: With dead ends: 778 [2024-11-27 19:58:52,380 INFO L226 Difference]: Without dead ends: 367 [2024-11-27 19:58:52,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:58:52,380 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 534 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:58:52,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 1251 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:58:52,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-27 19:58:52,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 355. [2024-11-27 19:58:52,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.344632768361582) internal successors, (476), 354 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 476 transitions. [2024-11-27 19:58:52,384 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 476 transitions. Word has length 234 [2024-11-27 19:58:52,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:58:52,384 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 476 transitions. [2024-11-27 19:58:52,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:58:52,385 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 476 transitions. [2024-11-27 19:58:52,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-11-27 19:58:52,385 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:58:52,386 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:58:52,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2024-11-27 19:58:52,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2024-11-27 19:58:52,586 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:58:52,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:58:52,587 INFO L85 PathProgramCache]: Analyzing trace with hash 631446605, now seen corresponding path program 1 times [2024-11-27 19:58:52,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:58:52,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980580669] [2024-11-27 19:58:52,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:58:52,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:58:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:58:54,720 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:58:54,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:58:54,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980580669] [2024-11-27 19:58:54,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980580669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:58:54,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133567719] [2024-11-27 19:58:54,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:58:54,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:58:54,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:58:54,722 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:58:54,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-27 19:59:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:00,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 19:59:00,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:59:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:59:00,599 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:59:00,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133567719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:59:00,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:59:00,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-27 19:59:00,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518813481] [2024-11-27 19:59:00,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:59:00,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:59:00,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:59:00,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:59:00,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:59:00,600 INFO L87 Difference]: Start difference. First operand 355 states and 476 transitions. Second operand has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:01,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:59:01,294 INFO L93 Difference]: Finished difference Result 782 states and 1039 transitions. [2024-11-27 19:59:01,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:59:01,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 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 235 [2024-11-27 19:59:01,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:59:01,295 INFO L225 Difference]: With dead ends: 782 [2024-11-27 19:59:01,295 INFO L226 Difference]: Without dead ends: 367 [2024-11-27 19:59:01,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:59:01,296 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 467 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:59:01,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 1252 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:59:01,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-27 19:59:01,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 355. [2024-11-27 19:59:01,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.3418079096045197) internal successors, (475), 354 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 475 transitions. [2024-11-27 19:59:01,302 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 475 transitions. Word has length 235 [2024-11-27 19:59:01,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:59:01,302 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 475 transitions. [2024-11-27 19:59:01,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 475 transitions. [2024-11-27 19:59:01,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-27 19:59:01,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:59:01,303 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:59:01,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-11-27 19:59:01,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2024-11-27 19:59:01,503 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:59:01,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:59:01,504 INFO L85 PathProgramCache]: Analyzing trace with hash 316478450, now seen corresponding path program 1 times [2024-11-27 19:59:01,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:59:01,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378486663] [2024-11-27 19:59:01,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:01,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:59:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:59:04,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:59:04,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378486663] [2024-11-27 19:59:04,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378486663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:59:04,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126445392] [2024-11-27 19:59:04,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:04,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:04,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:59:04,405 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:59:04,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-27 19:59:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:10,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 2448 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 19:59:10,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:59:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:59:10,532 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:59:10,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126445392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:59:10,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:59:10,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2024-11-27 19:59:10,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382460083] [2024-11-27 19:59:10,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:59:10,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:59:10,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:59:10,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:59:10,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:59:10,534 INFO L87 Difference]: Start difference. First operand 355 states and 475 transitions. Second operand has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:11,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:59:11,228 INFO L93 Difference]: Finished difference Result 786 states and 1042 transitions. [2024-11-27 19:59:11,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:59:11,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 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 236 [2024-11-27 19:59:11,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:59:11,230 INFO L225 Difference]: With dead ends: 786 [2024-11-27 19:59:11,230 INFO L226 Difference]: Without dead ends: 367 [2024-11-27 19:59:11,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-27 19:59:11,231 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 546 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:59:11,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1247 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:59:11,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-27 19:59:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 355. [2024-11-27 19:59:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.3389830508474576) internal successors, (474), 354 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:11,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 474 transitions. [2024-11-27 19:59:11,238 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 474 transitions. Word has length 236 [2024-11-27 19:59:11,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:59:11,238 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 474 transitions. [2024-11-27 19:59:11,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:11,239 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 474 transitions. [2024-11-27 19:59:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-27 19:59:11,240 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:59:11,240 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:59:11,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-27 19:59:11,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:11,441 INFO L396 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:59:11,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:59:11,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1375632634, now seen corresponding path program 1 times [2024-11-27 19:59:11,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:59:11,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037482120] [2024-11-27 19:59:11,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:11,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:59:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:59:13,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:59:13,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037482120] [2024-11-27 19:59:13,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037482120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:59:13,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701758627] [2024-11-27 19:59:13,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:13,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:13,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:59:13,360 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:59:13,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-27 19:59:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:19,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 2451 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 19:59:19,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:59:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:59:19,472 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:59:19,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701758627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:59:19,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:59:19,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-27 19:59:19,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741093942] [2024-11-27 19:59:19,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:59:19,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:59:19,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:59:19,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:59:19,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:59:19,473 INFO L87 Difference]: Start difference. First operand 355 states and 474 transitions. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:20,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:59:20,181 INFO L93 Difference]: Finished difference Result 790 states and 1045 transitions. [2024-11-27 19:59:20,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:59:20,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2024-11-27 19:59:20,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:59:20,183 INFO L225 Difference]: With dead ends: 790 [2024-11-27 19:59:20,183 INFO L226 Difference]: Without dead ends: 367 [2024-11-27 19:59:20,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:59:20,185 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 477 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:59:20,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1244 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:59:20,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-27 19:59:20,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 355. [2024-11-27 19:59:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.3361581920903955) internal successors, (473), 354 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:20,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 473 transitions. [2024-11-27 19:59:20,194 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 473 transitions. Word has length 237 [2024-11-27 19:59:20,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:59:20,194 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 473 transitions. [2024-11-27 19:59:20,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:20,194 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 473 transitions. [2024-11-27 19:59:20,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-27 19:59:20,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:59:20,196 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:59:20,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-27 19:59:20,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:20,397 INFO L396 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:59:20,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:59:20,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1103733177, now seen corresponding path program 1 times [2024-11-27 19:59:20,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:59:20,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735362969] [2024-11-27 19:59:20,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:20,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:59:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:59:23,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:59:23,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735362969] [2024-11-27 19:59:23,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735362969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:59:23,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061273952] [2024-11-27 19:59:23,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:23,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:23,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:59:23,294 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:59:23,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-27 19:59:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:29,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 2454 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 19:59:29,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:59:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:59:29,560 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:59:29,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061273952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:59:29,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:59:29,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2024-11-27 19:59:29,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266157213] [2024-11-27 19:59:29,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:59:29,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:59:29,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:59:29,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:59:29,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:59:29,562 INFO L87 Difference]: Start difference. First operand 355 states and 473 transitions. Second operand has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:30,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:59:30,238 INFO L93 Difference]: Finished difference Result 794 states and 1048 transitions. [2024-11-27 19:59:30,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:59:30,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 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 238 [2024-11-27 19:59:30,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:59:30,239 INFO L225 Difference]: With dead ends: 794 [2024-11-27 19:59:30,239 INFO L226 Difference]: Without dead ends: 367 [2024-11-27 19:59:30,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:59:30,240 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 481 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:59:30,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1241 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:59:30,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-27 19:59:30,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 355. [2024-11-27 19:59:30,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.3333333333333333) internal successors, (472), 354 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:30,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 472 transitions. [2024-11-27 19:59:30,244 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 472 transitions. Word has length 238 [2024-11-27 19:59:30,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:59:30,244 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 472 transitions. [2024-11-27 19:59:30,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:30,244 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 472 transitions. [2024-11-27 19:59:30,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-27 19:59:30,244 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:59:30,245 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:59:30,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-27 19:59:30,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:30,445 INFO L396 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:59:30,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:59:30,446 INFO L85 PathProgramCache]: Analyzing trace with hash 633541823, now seen corresponding path program 1 times [2024-11-27 19:59:30,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:59:30,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425458009] [2024-11-27 19:59:30,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:30,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:59:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:59:33,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:59:33,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425458009] [2024-11-27 19:59:33,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425458009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:59:33,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150593579] [2024-11-27 19:59:33,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:33,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:33,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:59:33,829 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:59:33,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-27 19:59:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:39,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 2457 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 19:59:39,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:59:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:59:40,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:59:40,538 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:59:40,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150593579] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:59:40,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:59:40,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 8] total 21 [2024-11-27 19:59:40,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477884632] [2024-11-27 19:59:40,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:59:40,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:59:40,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:59:40,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:59:40,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-27 19:59:40,540 INFO L87 Difference]: Start difference. First operand 355 states and 472 transitions. Second operand has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:41,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:59:41,249 INFO L93 Difference]: Finished difference Result 963 states and 1292 transitions. [2024-11-27 19:59:41,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:59:41,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 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 239 [2024-11-27 19:59:41,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:59:41,251 INFO L225 Difference]: With dead ends: 963 [2024-11-27 19:59:41,251 INFO L226 Difference]: Without dead ends: 626 [2024-11-27 19:59:41,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-27 19:59:41,252 INFO L435 NwaCegarLoop]: 526 mSDtfsCounter, 455 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:59:41,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1943 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:59:41,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2024-11-27 19:59:41,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 450. [2024-11-27 19:59:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.3140311804008908) internal successors, (590), 449 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 590 transitions. [2024-11-27 19:59:41,257 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 590 transitions. Word has length 239 [2024-11-27 19:59:41,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:59:41,257 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 590 transitions. [2024-11-27 19:59:41,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:41,258 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 590 transitions. [2024-11-27 19:59:41,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-27 19:59:41,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:59:41,259 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:59:41,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-11-27 19:59:41,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:41,459 INFO L396 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:59:41,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:59:41,460 INFO L85 PathProgramCache]: Analyzing trace with hash 133048541, now seen corresponding path program 1 times [2024-11-27 19:59:41,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:59:41,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021259787] [2024-11-27 19:59:41,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:41,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:59:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:44,964 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:59:44,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:59:44,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021259787] [2024-11-27 19:59:44,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021259787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:59:44,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788382070] [2024-11-27 19:59:44,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:44,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:44,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:59:44,967 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:59:44,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-27 19:59:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:50,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 2458 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-27 19:59:50,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:59:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:59:51,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:59:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 19:59:51,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788382070] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:59:51,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:59:51,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 8] total 22 [2024-11-27 19:59:51,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707322216] [2024-11-27 19:59:51,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:59:51,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:59:51,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:59:51,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:59:51,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2024-11-27 19:59:51,956 INFO L87 Difference]: Start difference. First operand 450 states and 590 transitions. Second operand has 7 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:52,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:59:52,654 INFO L93 Difference]: Finished difference Result 912 states and 1193 transitions. [2024-11-27 19:59:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 19:59:52,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 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 240 [2024-11-27 19:59:52,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:59:52,656 INFO L225 Difference]: With dead ends: 912 [2024-11-27 19:59:52,656 INFO L226 Difference]: Without dead ends: 478 [2024-11-27 19:59:52,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2024-11-27 19:59:52,657 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 210 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:59:52,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1365 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:59:52,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-11-27 19:59:52,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 450. [2024-11-27 19:59:52,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.311804008908686) internal successors, (589), 449 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 589 transitions. [2024-11-27 19:59:52,665 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 589 transitions. Word has length 240 [2024-11-27 19:59:52,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:59:52,665 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 589 transitions. [2024-11-27 19:59:52,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:59:52,665 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 589 transitions. [2024-11-27 19:59:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-27 19:59:52,666 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:59:52,667 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:59:52,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-11-27 19:59:52,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2024-11-27 19:59:52,867 INFO L396 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:59:52,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:59:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1111809152, now seen corresponding path program 1 times [2024-11-27 19:59:52,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:59:52,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524367262] [2024-11-27 19:59:52,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:52,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:59:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:59:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:59:55,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:59:55,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524367262] [2024-11-27 19:59:55,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524367262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:59:55,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057149507] [2024-11-27 19:59:55,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:59:55,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:55,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:59:55,629 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:59:55,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-27 20:00:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:01,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 2460 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 20:00:01,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:00:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:00:01,822 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:00:01,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057149507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:01,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:00:01,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2024-11-27 20:00:01,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116673666] [2024-11-27 20:00:01,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:01,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:00:01,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:01,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:00:01,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:00:01,824 INFO L87 Difference]: Start difference. First operand 450 states and 589 transitions. Second operand has 7 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:02,626 INFO L93 Difference]: Finished difference Result 1088 states and 1410 transitions. [2024-11-27 20:00:02,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:00:02,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 0 states have call successors, (0), 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 240 [2024-11-27 20:00:02,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:02,627 INFO L225 Difference]: With dead ends: 1088 [2024-11-27 20:00:02,627 INFO L226 Difference]: Without dead ends: 461 [2024-11-27 20:00:02,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:00:02,628 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 120 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:02,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1514 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:00:02,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-11-27 20:00:02,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 448. [2024-11-27 20:00:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.3109619686800895) internal successors, (586), 447 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:02,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 586 transitions. [2024-11-27 20:00:02,634 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 586 transitions. Word has length 240 [2024-11-27 20:00:02,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:02,634 INFO L471 AbstractCegarLoop]: Abstraction has 448 states and 586 transitions. [2024-11-27 20:00:02,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:02,634 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 586 transitions. [2024-11-27 20:00:02,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-27 20:00:02,635 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:02,635 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:02,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-11-27 20:00:02,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2024-11-27 20:00:02,836 INFO L396 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:02,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:02,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1566120511, now seen corresponding path program 1 times [2024-11-27 20:00:02,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:02,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712131445] [2024-11-27 20:00:02,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:02,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:05,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:05,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712131445] [2024-11-27 20:00:05,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712131445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:00:05,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805710274] [2024-11-27 20:00:05,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:05,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:00:05,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:00:05,159 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:00:05,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-27 20:00:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:11,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 2463 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 20:00:11,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:00:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:11,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:00:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:12,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805710274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:00:12,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:00:12,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-27 20:00:12,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996739600] [2024-11-27 20:00:12,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:00:12,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:00:12,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:12,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:00:12,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:00:12,889 INFO L87 Difference]: Start difference. First operand 448 states and 586 transitions. Second operand has 17 states, 17 states have (on average 19.470588235294116) internal successors, (331), 17 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:13,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:13,686 INFO L93 Difference]: Finished difference Result 1858 states and 2372 transitions. [2024-11-27 20:00:13,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:00:13,686 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 19.470588235294116) internal successors, (331), 17 states have internal predecessors, (331), 0 states have call successors, (0), 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 241 [2024-11-27 20:00:13,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:13,687 INFO L225 Difference]: With dead ends: 1858 [2024-11-27 20:00:13,687 INFO L226 Difference]: Without dead ends: 766 [2024-11-27 20:00:13,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2024-11-27 20:00:13,689 INFO L435 NwaCegarLoop]: 486 mSDtfsCounter, 1656 mSDsluCounter, 4117 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 4603 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:13,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1656 Valid, 4603 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:00:13,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2024-11-27 20:00:13,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 760. [2024-11-27 20:00:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 1.2779973649538867) internal successors, (970), 759 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 970 transitions. [2024-11-27 20:00:13,701 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 970 transitions. Word has length 241 [2024-11-27 20:00:13,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:13,701 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 970 transitions. [2024-11-27 20:00:13,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.470588235294116) internal successors, (331), 17 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:13,701 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 970 transitions. [2024-11-27 20:00:13,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-27 20:00:13,703 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:13,703 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:13,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-11-27 20:00:13,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:00:13,904 INFO L396 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:13,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:13,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1097970622, now seen corresponding path program 1 times [2024-11-27 20:00:13,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:13,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713326710] [2024-11-27 20:00:13,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:13,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:15,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:15,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713326710] [2024-11-27 20:00:15,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713326710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:15,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:00:15,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:00:15,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440563863] [2024-11-27 20:00:15,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:15,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:00:15,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:15,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:00:15,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:00:15,422 INFO L87 Difference]: Start difference. First operand 760 states and 970 transitions. Second operand has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:16,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:16,165 INFO L93 Difference]: Finished difference Result 1602 states and 2066 transitions. [2024-11-27 20:00:16,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:00:16,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 0 states have call successors, (0), 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 242 [2024-11-27 20:00:16,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:16,168 INFO L225 Difference]: With dead ends: 1602 [2024-11-27 20:00:16,168 INFO L226 Difference]: Without dead ends: 860 [2024-11-27 20:00:16,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:00:16,169 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 489 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:16,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1067 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:00:16,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2024-11-27 20:00:16,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 763. [2024-11-27 20:00:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 762 states have (on average 1.2769028871391077) internal successors, (973), 762 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:16,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 973 transitions. [2024-11-27 20:00:16,182 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 973 transitions. Word has length 242 [2024-11-27 20:00:16,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:16,182 INFO L471 AbstractCegarLoop]: Abstraction has 763 states and 973 transitions. [2024-11-27 20:00:16,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:16,183 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 973 transitions. [2024-11-27 20:00:16,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-27 20:00:16,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:16,184 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:16,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-11-27 20:00:16,184 INFO L396 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:16,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:16,185 INFO L85 PathProgramCache]: Analyzing trace with hash 608302285, now seen corresponding path program 1 times [2024-11-27 20:00:16,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:16,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111143702] [2024-11-27 20:00:16,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:16,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:16,988 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:16,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:16,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111143702] [2024-11-27 20:00:16,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111143702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:16,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:00:16,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:00:16,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914694782] [2024-11-27 20:00:16,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:16,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:00:16,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:16,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:00:16,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:00:16,989 INFO L87 Difference]: Start difference. First operand 763 states and 973 transitions. Second operand has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:17,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:17,060 INFO L93 Difference]: Finished difference Result 1818 states and 2302 transitions. [2024-11-27 20:00:17,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:00:17,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 0 states have call successors, (0), 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 242 [2024-11-27 20:00:17,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:17,062 INFO L225 Difference]: With dead ends: 1818 [2024-11-27 20:00:17,062 INFO L226 Difference]: Without dead ends: 1073 [2024-11-27 20:00:17,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:00:17,063 INFO L435 NwaCegarLoop]: 641 mSDtfsCounter, 303 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:17,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 2315 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:00:17,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2024-11-27 20:00:17,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1068. [2024-11-27 20:00:17,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 1.2624179943767573) internal successors, (1347), 1067 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:17,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1347 transitions. [2024-11-27 20:00:17,074 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1347 transitions. Word has length 242 [2024-11-27 20:00:17,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:17,074 INFO L471 AbstractCegarLoop]: Abstraction has 1068 states and 1347 transitions. [2024-11-27 20:00:17,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:17,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1347 transitions. [2024-11-27 20:00:17,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-27 20:00:17,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:17,075 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:17,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-11-27 20:00:17,076 INFO L396 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:17,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:17,076 INFO L85 PathProgramCache]: Analyzing trace with hash -616262632, now seen corresponding path program 1 times [2024-11-27 20:00:17,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:17,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912087728] [2024-11-27 20:00:17,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:17,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:18,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:18,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912087728] [2024-11-27 20:00:18,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912087728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:18,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:00:18,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:00:18,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083190213] [2024-11-27 20:00:18,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:18,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:00:18,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:18,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:00:18,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:00:18,624 INFO L87 Difference]: Start difference. First operand 1068 states and 1347 transitions. Second operand has 6 states, 6 states have (on average 40.5) internal successors, (243), 6 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:19,341 INFO L93 Difference]: Finished difference Result 2212 states and 2812 transitions. [2024-11-27 20:00:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:00:19,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.5) internal successors, (243), 6 states have internal predecessors, (243), 0 states have call successors, (0), 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 243 [2024-11-27 20:00:19,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:19,342 INFO L225 Difference]: With dead ends: 2212 [2024-11-27 20:00:19,342 INFO L226 Difference]: Without dead ends: 1164 [2024-11-27 20:00:19,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:00:19,343 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 486 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:19,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 1065 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:00:19,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2024-11-27 20:00:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1071. [2024-11-27 20:00:19,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 1.2616822429906542) internal successors, (1350), 1070 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1350 transitions. [2024-11-27 20:00:19,359 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1350 transitions. Word has length 243 [2024-11-27 20:00:19,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:19,359 INFO L471 AbstractCegarLoop]: Abstraction has 1071 states and 1350 transitions. [2024-11-27 20:00:19,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.5) internal successors, (243), 6 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:19,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1350 transitions. [2024-11-27 20:00:19,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-27 20:00:19,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:19,361 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:19,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-11-27 20:00:19,361 INFO L396 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:19,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:19,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1297646588, now seen corresponding path program 1 times [2024-11-27 20:00:19,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:19,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069661053] [2024-11-27 20:00:19,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:19,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:21,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:21,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069661053] [2024-11-27 20:00:21,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069661053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:21,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:00:21,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 20:00:21,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337535242] [2024-11-27 20:00:21,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:21,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:00:21,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:21,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:00:21,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:00:21,158 INFO L87 Difference]: Start difference. First operand 1071 states and 1350 transitions. Second operand has 11 states, 11 states have (on average 22.09090909090909) internal successors, (243), 11 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:22,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:22,209 INFO L93 Difference]: Finished difference Result 2235 states and 2837 transitions. [2024-11-27 20:00:22,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:00:22,210 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.09090909090909) internal successors, (243), 11 states have internal predecessors, (243), 0 states have call successors, (0), 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 243 [2024-11-27 20:00:22,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:22,211 INFO L225 Difference]: With dead ends: 2235 [2024-11-27 20:00:22,211 INFO L226 Difference]: Without dead ends: 1184 [2024-11-27 20:00:22,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:00:22,212 INFO L435 NwaCegarLoop]: 404 mSDtfsCounter, 735 mSDsluCounter, 2490 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:22,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 2894 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:00:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2024-11-27 20:00:22,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1077. [2024-11-27 20:00:22,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 1.2611524163568772) internal successors, (1357), 1076 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:22,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1357 transitions. [2024-11-27 20:00:22,226 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1357 transitions. Word has length 243 [2024-11-27 20:00:22,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:22,226 INFO L471 AbstractCegarLoop]: Abstraction has 1077 states and 1357 transitions. [2024-11-27 20:00:22,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.09090909090909) internal successors, (243), 11 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:22,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1357 transitions. [2024-11-27 20:00:22,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-27 20:00:22,228 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:22,228 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:22,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-11-27 20:00:22,229 INFO L396 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:22,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:22,229 INFO L85 PathProgramCache]: Analyzing trace with hash -482726078, now seen corresponding path program 1 times [2024-11-27 20:00:22,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:22,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819044173] [2024-11-27 20:00:22,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:22,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:25,022 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:25,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:25,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819044173] [2024-11-27 20:00:25,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819044173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:00:25,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312962954] [2024-11-27 20:00:25,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:25,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:00:25,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:00:25,025 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:00:25,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-27 20:00:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:31,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 2469 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-27 20:00:31,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:00:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:32,832 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:00:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:34,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312962954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:00:34,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:00:34,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 24 [2024-11-27 20:00:34,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106604617] [2024-11-27 20:00:34,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:00:34,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 20:00:34,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:34,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 20:00:34,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:00:34,271 INFO L87 Difference]: Start difference. First operand 1077 states and 1357 transitions. Second operand has 24 states, 24 states have (on average 17.25) internal successors, (414), 24 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:36,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:36,118 INFO L93 Difference]: Finished difference Result 3123 states and 3922 transitions. [2024-11-27 20:00:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-27 20:00:36,119 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 17.25) internal successors, (414), 24 states have internal predecessors, (414), 0 states have call successors, (0), 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 243 [2024-11-27 20:00:36,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:36,120 INFO L225 Difference]: With dead ends: 3123 [2024-11-27 20:00:36,120 INFO L226 Difference]: Without dead ends: 1099 [2024-11-27 20:00:36,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 470 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 20:00:36,122 INFO L435 NwaCegarLoop]: 781 mSDtfsCounter, 2365 mSDsluCounter, 8686 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2365 SdHoareTripleChecker+Valid, 9467 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:36,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2365 Valid, 9467 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:00:36,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2024-11-27 20:00:36,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1083. [2024-11-27 20:00:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 1.2615526802218116) internal successors, (1365), 1082 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1365 transitions. [2024-11-27 20:00:36,130 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1365 transitions. Word has length 243 [2024-11-27 20:00:36,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:36,130 INFO L471 AbstractCegarLoop]: Abstraction has 1083 states and 1365 transitions. [2024-11-27 20:00:36,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 17.25) internal successors, (414), 24 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:36,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1365 transitions. [2024-11-27 20:00:36,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-27 20:00:36,132 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:36,132 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:36,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-11-27 20:00:36,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:00:36,333 INFO L396 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:36,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:36,333 INFO L85 PathProgramCache]: Analyzing trace with hash -458763428, now seen corresponding path program 1 times [2024-11-27 20:00:36,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:36,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702208382] [2024-11-27 20:00:36,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:36,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:40,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:40,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702208382] [2024-11-27 20:00:40,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702208382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:00:40,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573776740] [2024-11-27 20:00:40,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:40,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:00:40,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:00:40,613 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:00:40,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-27 20:00:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:47,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 2467 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-27 20:00:47,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:00:48,563 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:48,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:00:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:50,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573776740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:00:50,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:00:50,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 23 [2024-11-27 20:00:50,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008539914] [2024-11-27 20:00:50,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:00:50,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 20:00:50,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:50,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 20:00:50,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:00:50,090 INFO L87 Difference]: Start difference. First operand 1083 states and 1365 transitions. Second operand has 23 states, 23 states have (on average 14.695652173913043) internal successors, (338), 23 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:51,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:51,141 INFO L93 Difference]: Finished difference Result 3129 states and 3928 transitions. [2024-11-27 20:00:51,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:00:51,142 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 14.695652173913043) internal successors, (338), 23 states have internal predecessors, (338), 0 states have call successors, (0), 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 243 [2024-11-27 20:00:51,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:51,143 INFO L225 Difference]: With dead ends: 3129 [2024-11-27 20:00:51,143 INFO L226 Difference]: Without dead ends: 1099 [2024-11-27 20:00:51,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=240, Invalid=1092, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 20:00:51,145 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 2254 mSDsluCounter, 4457 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2254 SdHoareTripleChecker+Valid, 4928 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:51,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2254 Valid, 4928 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:00:51,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2024-11-27 20:00:51,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1085. [2024-11-27 20:00:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1084 states have (on average 1.2619926199261993) internal successors, (1368), 1084 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1368 transitions. [2024-11-27 20:00:51,158 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1368 transitions. Word has length 243 [2024-11-27 20:00:51,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:51,158 INFO L471 AbstractCegarLoop]: Abstraction has 1085 states and 1368 transitions. [2024-11-27 20:00:51,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.695652173913043) internal successors, (338), 23 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1368 transitions. [2024-11-27 20:00:51,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-27 20:00:51,159 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:51,159 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:51,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-11-27 20:00:51,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2024-11-27 20:00:51,360 INFO L396 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:51,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:51,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1856075077, now seen corresponding path program 1 times [2024-11-27 20:00:51,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:51,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025689870] [2024-11-27 20:00:51,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:51,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:53,493 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:53,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:53,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025689870] [2024-11-27 20:00:53,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025689870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:53,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:00:53,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 20:00:53,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886789018] [2024-11-27 20:00:53,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:53,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:00:53,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:53,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:00:53,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:00:53,495 INFO L87 Difference]: Start difference. First operand 1085 states and 1368 transitions. Second operand has 11 states, 11 states have (on average 22.181818181818183) internal successors, (244), 11 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:54,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:54,570 INFO L93 Difference]: Finished difference Result 2258 states and 2866 transitions. [2024-11-27 20:00:54,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:00:54,570 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.181818181818183) internal successors, (244), 11 states have internal predecessors, (244), 0 states have call successors, (0), 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 244 [2024-11-27 20:00:54,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:54,572 INFO L225 Difference]: With dead ends: 2258 [2024-11-27 20:00:54,572 INFO L226 Difference]: Without dead ends: 1193 [2024-11-27 20:00:54,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:00:54,573 INFO L435 NwaCegarLoop]: 396 mSDtfsCounter, 888 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:54,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 2845 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:00:54,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2024-11-27 20:00:54,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1099. [2024-11-27 20:00:54,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 1.261384335154827) internal successors, (1385), 1098 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1385 transitions. [2024-11-27 20:00:54,586 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1385 transitions. Word has length 244 [2024-11-27 20:00:54,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:54,586 INFO L471 AbstractCegarLoop]: Abstraction has 1099 states and 1385 transitions. [2024-11-27 20:00:54,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.181818181818183) internal successors, (244), 11 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:54,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1385 transitions. [2024-11-27 20:00:54,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-27 20:00:54,588 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:54,589 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:54,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-11-27 20:00:54,589 INFO L396 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:54,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:54,589 INFO L85 PathProgramCache]: Analyzing trace with hash -547394490, now seen corresponding path program 1 times [2024-11-27 20:00:54,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:54,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104534870] [2024-11-27 20:00:54,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:54,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:55,373 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:55,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:55,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104534870] [2024-11-27 20:00:55,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104534870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:55,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:00:55,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:00:55,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507469408] [2024-11-27 20:00:55,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:55,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:00:55,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:55,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:00:55,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:00:55,374 INFO L87 Difference]: Start difference. First operand 1099 states and 1385 transitions. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:55,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:55,401 INFO L93 Difference]: Finished difference Result 2174 states and 2739 transitions. [2024-11-27 20:00:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:00:55,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 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 244 [2024-11-27 20:00:55,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:55,403 INFO L225 Difference]: With dead ends: 2174 [2024-11-27 20:00:55,403 INFO L226 Difference]: Without dead ends: 1095 [2024-11-27 20:00:55,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:00:55,405 INFO L435 NwaCegarLoop]: 420 mSDtfsCounter, 338 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:55,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 839 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:00:55,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2024-11-27 20:00:55,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1091. [2024-11-27 20:00:55,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1090 states have (on average 1.2577981651376147) internal successors, (1371), 1090 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1371 transitions. [2024-11-27 20:00:55,415 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1371 transitions. Word has length 244 [2024-11-27 20:00:55,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:55,415 INFO L471 AbstractCegarLoop]: Abstraction has 1091 states and 1371 transitions. [2024-11-27 20:00:55,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:00:55,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1371 transitions. [2024-11-27 20:00:55,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-27 20:00:55,416 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:55,417 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:55,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-11-27 20:00:55,417 INFO L396 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:55,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:55,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1355433585, now seen corresponding path program 1 times [2024-11-27 20:00:55,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:55,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942995464] [2024-11-27 20:00:55,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:55,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:00:58,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:58,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942995464] [2024-11-27 20:00:58,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942995464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:00:58,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782477632] [2024-11-27 20:00:58,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:58,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:00:58,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:00:58,925 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:00:58,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-11-27 20:01:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:05,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-27 20:01:05,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:01:06,252 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:06,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782477632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:06,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:01:06,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2024-11-27 20:01:06,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743946667] [2024-11-27 20:01:06,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:06,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:01:06,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:06,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:01:06,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:01:06,253 INFO L87 Difference]: Start difference. First operand 1091 states and 1371 transitions. Second operand has 9 states, 9 states have (on average 27.22222222222222) internal successors, (245), 9 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:07,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:07,078 INFO L93 Difference]: Finished difference Result 2253 states and 2853 transitions. [2024-11-27 20:01:07,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:01:07,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 27.22222222222222) internal successors, (245), 9 states have internal predecessors, (245), 0 states have call successors, (0), 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 245 [2024-11-27 20:01:07,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:07,080 INFO L225 Difference]: With dead ends: 2253 [2024-11-27 20:01:07,080 INFO L226 Difference]: Without dead ends: 1182 [2024-11-27 20:01:07,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:01:07,081 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 1061 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:07,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 1235 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:01:07,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2024-11-27 20:01:07,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1182. [2024-11-27 20:01:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1181 states have (on average 1.275190516511431) internal successors, (1506), 1181 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1506 transitions. [2024-11-27 20:01:07,089 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1506 transitions. Word has length 245 [2024-11-27 20:01:07,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:07,090 INFO L471 AbstractCegarLoop]: Abstraction has 1182 states and 1506 transitions. [2024-11-27 20:01:07,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.22222222222222) internal successors, (245), 9 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:07,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1506 transitions. [2024-11-27 20:01:07,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-27 20:01:07,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:07,091 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:07,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-11-27 20:01:07,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:07,291 INFO L396 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:07,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:07,292 INFO L85 PathProgramCache]: Analyzing trace with hash -548903873, now seen corresponding path program 1 times [2024-11-27 20:01:07,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:07,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320071329] [2024-11-27 20:01:07,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:07,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:01:10,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:10,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320071329] [2024-11-27 20:01:10,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320071329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:10,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:10,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 20:01:10,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959675341] [2024-11-27 20:01:10,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:10,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:01:10,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:10,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:01:10,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:01:10,302 INFO L87 Difference]: Start difference. First operand 1182 states and 1506 transitions. Second operand has 11 states, 11 states have (on average 22.272727272727273) internal successors, (245), 11 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:12,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:12,062 INFO L93 Difference]: Finished difference Result 2548 states and 3284 transitions. [2024-11-27 20:01:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:01:12,063 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.272727272727273) internal successors, (245), 11 states have internal predecessors, (245), 0 states have call successors, (0), 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 245 [2024-11-27 20:01:12,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:12,064 INFO L225 Difference]: With dead ends: 2548 [2024-11-27 20:01:12,064 INFO L226 Difference]: Without dead ends: 1386 [2024-11-27 20:01:12,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:01:12,066 INFO L435 NwaCegarLoop]: 623 mSDtfsCounter, 711 mSDsluCounter, 3767 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:12,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 4390 Invalid, 1786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 20:01:12,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2024-11-27 20:01:12,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1190. [2024-11-27 20:01:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1189 states have (on average 1.274179983179142) internal successors, (1515), 1189 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:12,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1515 transitions. [2024-11-27 20:01:12,080 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1515 transitions. Word has length 245 [2024-11-27 20:01:12,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:12,080 INFO L471 AbstractCegarLoop]: Abstraction has 1190 states and 1515 transitions. [2024-11-27 20:01:12,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.272727272727273) internal successors, (245), 11 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:12,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1515 transitions. [2024-11-27 20:01:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-27 20:01:12,082 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:12,082 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:12,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-11-27 20:01:12,082 INFO L396 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:12,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:12,082 INFO L85 PathProgramCache]: Analyzing trace with hash -43193063, now seen corresponding path program 1 times [2024-11-27 20:01:12,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:12,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033634840] [2024-11-27 20:01:12,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:12,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:16,240 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:01:16,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:16,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033634840] [2024-11-27 20:01:16,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033634840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:01:16,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114671587] [2024-11-27 20:01:16,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:16,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:16,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:16,242 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:16,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-11-27 20:01:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:23,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-27 20:01:23,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:01:24,310 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:01:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:01:25,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114671587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:01:25,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:01:25,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-27 20:01:25,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253229262] [2024-11-27 20:01:25,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:01:25,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 20:01:25,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:25,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 20:01:25,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-11-27 20:01:25,896 INFO L87 Difference]: Start difference. First operand 1190 states and 1515 transitions. Second operand has 21 states, 21 states have (on average 22.38095238095238) internal successors, (470), 21 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:28,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:28,414 INFO L93 Difference]: Finished difference Result 4493 states and 5751 transitions. [2024-11-27 20:01:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:01:28,415 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 22.38095238095238) internal successors, (470), 21 states have internal predecessors, (470), 0 states have call successors, (0), 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 245 [2024-11-27 20:01:28,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:28,418 INFO L225 Difference]: With dead ends: 4493 [2024-11-27 20:01:28,418 INFO L226 Difference]: Without dead ends: 3323 [2024-11-27 20:01:28,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=914, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 20:01:28,419 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 2998 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2998 SdHoareTripleChecker+Valid, 2887 SdHoareTripleChecker+Invalid, 2598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:28,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2998 Valid, 2887 Invalid, 2598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 20:01:28,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2024-11-27 20:01:28,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 1798. [2024-11-27 20:01:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1797 states have (on average 1.325542570951586) internal successors, (2382), 1797 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:28,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2382 transitions. [2024-11-27 20:01:28,439 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2382 transitions. Word has length 245 [2024-11-27 20:01:28,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:28,440 INFO L471 AbstractCegarLoop]: Abstraction has 1798 states and 2382 transitions. [2024-11-27 20:01:28,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 22.38095238095238) internal successors, (470), 21 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:28,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2382 transitions. [2024-11-27 20:01:28,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-27 20:01:28,441 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:28,441 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:28,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-11-27 20:01:28,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:28,642 INFO L396 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:28,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:28,642 INFO L85 PathProgramCache]: Analyzing trace with hash 78039779, now seen corresponding path program 1 times [2024-11-27 20:01:28,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:28,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062033706] [2024-11-27 20:01:28,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:28,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:01:31,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:31,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062033706] [2024-11-27 20:01:31,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062033706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:01:31,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902747317] [2024-11-27 20:01:31,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:31,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:31,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:31,699 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:31,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-11-27 20:01:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:38,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 2472 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 20:01:38,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:01:38,521 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:38,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902747317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:38,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:01:38,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2024-11-27 20:01:38,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224282077] [2024-11-27 20:01:38,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:38,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:01:38,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:38,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:01:38,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:01:38,522 INFO L87 Difference]: Start difference. First operand 1798 states and 2382 transitions. Second operand has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:39,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:39,141 INFO L93 Difference]: Finished difference Result 4250 states and 5582 transitions. [2024-11-27 20:01:39,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:01:39,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 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 246 [2024-11-27 20:01:39,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:39,144 INFO L225 Difference]: With dead ends: 4250 [2024-11-27 20:01:39,144 INFO L226 Difference]: Without dead ends: 2472 [2024-11-27 20:01:39,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:01:39,145 INFO L435 NwaCegarLoop]: 328 mSDtfsCounter, 84 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:39,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1149 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:01:39,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2024-11-27 20:01:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2095. [2024-11-27 20:01:39,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 2094 states have (on average 1.316618911174785) internal successors, (2757), 2094 states have internal predecessors, (2757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 2757 transitions. [2024-11-27 20:01:39,166 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 2757 transitions. Word has length 246 [2024-11-27 20:01:39,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:39,166 INFO L471 AbstractCegarLoop]: Abstraction has 2095 states and 2757 transitions. [2024-11-27 20:01:39,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:39,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 2757 transitions. [2024-11-27 20:01:39,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-27 20:01:39,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:39,168 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:39,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2024-11-27 20:01:39,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2024-11-27 20:01:39,369 INFO L396 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:39,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:39,369 INFO L85 PathProgramCache]: Analyzing trace with hash -25850979, now seen corresponding path program 1 times [2024-11-27 20:01:39,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:39,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133089838] [2024-11-27 20:01:39,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:39,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:01:42,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:42,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133089838] [2024-11-27 20:01:42,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133089838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:01:42,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851383862] [2024-11-27 20:01:42,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:42,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:42,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:42,169 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:42,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-11-27 20:01:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:48,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:01:48,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:01:49,134 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:01:49,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851383862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:49,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:01:49,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2024-11-27 20:01:49,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164272108] [2024-11-27 20:01:49,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:49,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:01:49,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:49,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:01:49,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:01:49,135 INFO L87 Difference]: Start difference. First operand 2095 states and 2757 transitions. Second operand has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:49,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:49,839 INFO L93 Difference]: Finished difference Result 4194 states and 5515 transitions. [2024-11-27 20:01:49,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:01:49,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 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 247 [2024-11-27 20:01:49,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:49,842 INFO L225 Difference]: With dead ends: 4194 [2024-11-27 20:01:49,842 INFO L226 Difference]: Without dead ends: 1861 [2024-11-27 20:01:49,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:01:49,844 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 553 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:49,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1215 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:01:49,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-11-27 20:01:49,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1822. [2024-11-27 20:01:49,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1821 states have (on average 1.3245469522240527) internal successors, (2412), 1821 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:49,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 2412 transitions. [2024-11-27 20:01:49,870 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 2412 transitions. Word has length 247 [2024-11-27 20:01:49,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:49,870 INFO L471 AbstractCegarLoop]: Abstraction has 1822 states and 2412 transitions. [2024-11-27 20:01:49,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:49,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 2412 transitions. [2024-11-27 20:01:49,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-27 20:01:49,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:49,873 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:49,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2024-11-27 20:01:50,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2024-11-27 20:01:50,073 INFO L396 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:50,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:50,074 INFO L85 PathProgramCache]: Analyzing trace with hash 92354361, now seen corresponding path program 1 times [2024-11-27 20:01:50,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:50,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427867699] [2024-11-27 20:01:50,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:50,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:01:55,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:55,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427867699] [2024-11-27 20:01:55,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427867699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:01:55,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291186133] [2024-11-27 20:01:55,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:55,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:55,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:55,336 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:55,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-11-27 20:02:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:01,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:02:01,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:02:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-27 20:02:01,996 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:02:01,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291186133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:02:01,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:02:01,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2024-11-27 20:02:01,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483333510] [2024-11-27 20:02:01,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:02:01,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:02:01,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:02:01,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:02:01,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:02:01,997 INFO L87 Difference]: Start difference. First operand 1822 states and 2412 transitions. Second operand has 5 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:02,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:02:02,346 INFO L93 Difference]: Finished difference Result 3719 states and 4919 transitions. [2024-11-27 20:02:02,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:02:02,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2024-11-27 20:02:02,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:02:02,349 INFO L225 Difference]: With dead ends: 3719 [2024-11-27 20:02:02,349 INFO L226 Difference]: Without dead ends: 1908 [2024-11-27 20:02:02,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:02:02,351 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 31 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:02:02,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1351 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:02:02,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2024-11-27 20:02:02,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1831. [2024-11-27 20:02:02,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1830 states have (on average 1.321311475409836) internal successors, (2418), 1830 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2418 transitions. [2024-11-27 20:02:02,367 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2418 transitions. Word has length 247 [2024-11-27 20:02:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:02,367 INFO L471 AbstractCegarLoop]: Abstraction has 1831 states and 2418 transitions. [2024-11-27 20:02:02,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:02,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2418 transitions. [2024-11-27 20:02:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-27 20:02:02,370 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:02:02,370 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:02:02,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-11-27 20:02:02,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2024-11-27 20:02:02,570 INFO L396 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:02:02,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:02:02,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1191767530, now seen corresponding path program 1 times [2024-11-27 20:02:02,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:02:02,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207176408] [2024-11-27 20:02:02,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:02,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:02:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:02:05,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:02:05,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207176408] [2024-11-27 20:02:05,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207176408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:02:05,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:02:05,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:02:05,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423825216] [2024-11-27 20:02:05,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:02:05,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:02:05,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:02:05,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:02:05,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:02:05,264 INFO L87 Difference]: Start difference. First operand 1831 states and 2418 transitions. Second operand has 6 states, 6 states have (on average 41.166666666666664) internal successors, (247), 6 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:05,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:02:05,325 INFO L93 Difference]: Finished difference Result 3645 states and 4816 transitions. [2024-11-27 20:02:05,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:02:05,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 41.166666666666664) internal successors, (247), 6 states have internal predecessors, (247), 0 states have call successors, (0), 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 247 [2024-11-27 20:02:05,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:02:05,328 INFO L225 Difference]: With dead ends: 3645 [2024-11-27 20:02:05,329 INFO L226 Difference]: Without dead ends: 1834 [2024-11-27 20:02:05,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:02:05,331 INFO L435 NwaCegarLoop]: 413 mSDtfsCounter, 349 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:02:05,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1644 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:02:05,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2024-11-27 20:02:05,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1834. [2024-11-27 20:02:05,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 1.3191489361702127) internal successors, (2418), 1833 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2418 transitions. [2024-11-27 20:02:05,358 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2418 transitions. Word has length 247 [2024-11-27 20:02:05,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:05,358 INFO L471 AbstractCegarLoop]: Abstraction has 1834 states and 2418 transitions. [2024-11-27 20:02:05,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.166666666666664) internal successors, (247), 6 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:05,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2418 transitions. [2024-11-27 20:02:05,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-27 20:02:05,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:02:05,361 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:02:05,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-11-27 20:02:05,361 INFO L396 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:02:05,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:02:05,362 INFO L85 PathProgramCache]: Analyzing trace with hash 694708932, now seen corresponding path program 1 times [2024-11-27 20:02:05,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:02:05,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439376253] [2024-11-27 20:02:05,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:05,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:02:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:02:10,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:02:10,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439376253] [2024-11-27 20:02:10,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439376253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:02:10,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528570113] [2024-11-27 20:02:10,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:10,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:02:10,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:02:10,145 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:02:10,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-11-27 20:02:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:18,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-27 20:02:18,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:02:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:02:20,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:02:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-27 20:02:20,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528570113] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:02:20,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:02:20,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 11] total 23 [2024-11-27 20:02:20,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040381334] [2024-11-27 20:02:20,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:02:20,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:02:20,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:02:20,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:02:20,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:02:20,328 INFO L87 Difference]: Start difference. First operand 1834 states and 2418 transitions. Second operand has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:20,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:02:20,821 INFO L93 Difference]: Finished difference Result 3776 states and 4967 transitions. [2024-11-27 20:02:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:02:20,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 0 states have call successors, (0), 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 248 [2024-11-27 20:02:20,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:02:20,824 INFO L225 Difference]: With dead ends: 3776 [2024-11-27 20:02:20,824 INFO L226 Difference]: Without dead ends: 1941 [2024-11-27 20:02:20,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:02:20,825 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 32 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:02:20,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1182 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:02:20,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2024-11-27 20:02:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1846. [2024-11-27 20:02:20,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 1.3170731707317074) internal successors, (2430), 1845 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 2430 transitions. [2024-11-27 20:02:20,846 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 2430 transitions. Word has length 248 [2024-11-27 20:02:20,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:20,846 INFO L471 AbstractCegarLoop]: Abstraction has 1846 states and 2430 transitions. [2024-11-27 20:02:20,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 2430 transitions. [2024-11-27 20:02:20,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-27 20:02:20,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:02:20,848 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:02:20,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-11-27 20:02:21,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2024-11-27 20:02:21,049 INFO L396 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:02:21,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:02:21,049 INFO L85 PathProgramCache]: Analyzing trace with hash -672815824, now seen corresponding path program 1 times [2024-11-27 20:02:21,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:02:21,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917296519] [2024-11-27 20:02:21,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:21,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:02:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:02:22,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:02:22,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917296519] [2024-11-27 20:02:22,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917296519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:02:22,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:02:22,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:02:22,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208000764] [2024-11-27 20:02:22,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:02:22,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:02:22,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:02:22,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:02:22,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:02:22,964 INFO L87 Difference]: Start difference. First operand 1846 states and 2430 transitions. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:23,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:02:23,108 INFO L93 Difference]: Finished difference Result 3870 states and 5041 transitions. [2024-11-27 20:02:23,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:02:23,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 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 248 [2024-11-27 20:02:23,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:02:23,110 INFO L225 Difference]: With dead ends: 3870 [2024-11-27 20:02:23,111 INFO L226 Difference]: Without dead ends: 2044 [2024-11-27 20:02:23,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:02:23,112 INFO L435 NwaCegarLoop]: 389 mSDtfsCounter, 497 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:02:23,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 1162 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:02:23,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2024-11-27 20:02:23,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 2044. [2024-11-27 20:02:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 2043 states have (on average 1.28928046989721) internal successors, (2634), 2043 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:23,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2634 transitions. [2024-11-27 20:02:23,130 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2634 transitions. Word has length 248 [2024-11-27 20:02:23,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:23,130 INFO L471 AbstractCegarLoop]: Abstraction has 2044 states and 2634 transitions. [2024-11-27 20:02:23,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:23,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2634 transitions. [2024-11-27 20:02:23,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-27 20:02:23,132 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:02:23,132 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:02:23,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-11-27 20:02:23,132 INFO L396 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:02:23,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:02:23,132 INFO L85 PathProgramCache]: Analyzing trace with hash -610646726, now seen corresponding path program 1 times [2024-11-27 20:02:23,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:02:23,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721695994] [2024-11-27 20:02:23,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:23,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:02:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:26,341 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:02:26,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:02:26,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721695994] [2024-11-27 20:02:26,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721695994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:02:26,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223912658] [2024-11-27 20:02:26,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:26,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:02:26,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:02:26,343 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:02:26,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-11-27 20:02:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:33,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-27 20:02:33,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:02:33,920 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:02:33,920 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:02:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-27 20:02:34,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223912658] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:02:34,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:02:34,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 6] total 16 [2024-11-27 20:02:34,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580257861] [2024-11-27 20:02:34,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:02:34,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:02:34,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:02:34,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:02:34,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:02:34,008 INFO L87 Difference]: Start difference. First operand 2044 states and 2634 transitions. Second operand has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:02:34,420 INFO L93 Difference]: Finished difference Result 4007 states and 5207 transitions. [2024-11-27 20:02:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:02:34,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 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 249 [2024-11-27 20:02:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:02:34,423 INFO L225 Difference]: With dead ends: 4007 [2024-11-27 20:02:34,423 INFO L226 Difference]: Without dead ends: 2160 [2024-11-27 20:02:34,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:02:34,424 INFO L435 NwaCegarLoop]: 435 mSDtfsCounter, 35 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:02:34,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1372 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:02:34,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2160 states. [2024-11-27 20:02:34,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 2065. [2024-11-27 20:02:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2065 states, 2064 states have (on average 1.2863372093023255) internal successors, (2655), 2064 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:34,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2655 transitions. [2024-11-27 20:02:34,454 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2655 transitions. Word has length 249 [2024-11-27 20:02:34,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:34,455 INFO L471 AbstractCegarLoop]: Abstraction has 2065 states and 2655 transitions. [2024-11-27 20:02:34,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:34,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2655 transitions. [2024-11-27 20:02:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-27 20:02:34,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:02:34,457 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:02:34,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-11-27 20:02:34,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2024-11-27 20:02:34,658 INFO L396 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:02:34,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:02:34,658 INFO L85 PathProgramCache]: Analyzing trace with hash 2131041701, now seen corresponding path program 1 times [2024-11-27 20:02:34,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:02:34,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124372638] [2024-11-27 20:02:34,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:34,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:02:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:03:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 52 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:03:16,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:03:16,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124372638] [2024-11-27 20:03:16,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124372638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:03:16,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436786564] [2024-11-27 20:03:16,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:03:16,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:03:16,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:03:16,213 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:03:16,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-11-27 20:03:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:03:23,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 2476 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:03:23,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:03:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-27 20:03:23,427 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:03:23,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436786564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:03:23,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:03:23,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22] total 25 [2024-11-27 20:03:23,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258814935] [2024-11-27 20:03:23,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:03:23,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:03:23,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:03:23,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:03:23,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:03:23,428 INFO L87 Difference]: Start difference. First operand 2065 states and 2655 transitions. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:03:23,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:03:23,816 INFO L93 Difference]: Finished difference Result 4121 states and 5330 transitions. [2024-11-27 20:03:23,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:03:23,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 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 250 [2024-11-27 20:03:23,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:03:23,817 INFO L225 Difference]: With dead ends: 4121 [2024-11-27 20:03:23,818 INFO L226 Difference]: Without dead ends: 2229 [2024-11-27 20:03:23,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2024-11-27 20:03:23,819 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 34 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:03:23,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1358 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:03:23,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2024-11-27 20:03:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 2089. [2024-11-27 20:03:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 2088 states have (on average 1.2844827586206897) internal successors, (2682), 2088 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:03:23,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 2682 transitions. [2024-11-27 20:03:23,835 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 2682 transitions. Word has length 250 [2024-11-27 20:03:23,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:03:23,835 INFO L471 AbstractCegarLoop]: Abstraction has 2089 states and 2682 transitions. [2024-11-27 20:03:23,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:03:23,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 2682 transitions. [2024-11-27 20:03:23,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-27 20:03:23,836 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:03:23,836 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:03:23,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-11-27 20:03:24,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ed8c3f3-4afb-4c1d-8229-367f62fe7be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:03:24,037 INFO L396 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:03:24,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:03:24,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1121304123, now seen corresponding path program 1 times [2024-11-27 20:03:24,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:03:24,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480923912] [2024-11-27 20:03:24,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:03:24,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms