./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-50.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/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_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/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 32bit --witnessprinter.graph.data.programhash 06ef7f2efa2a7691ecaef299a937b3a52b6ee19dfe067204bd3fd1b2386eabbe --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:03:14,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:03:14,622 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:03:14,629 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:03:14,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:03:14,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:03:14,673 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:03:14,673 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:03:14,674 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:03:14,674 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:03:14,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:03:14,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:03:14,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:03:14,674 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:03:14,675 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:03:14,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:03:14,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:03:14,676 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:03:14,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:03:14,676 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:03:14,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:03:14,677 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:03:14,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:03:14,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:03:14,677 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:03:14,677 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:03:14,677 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:03:14,678 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:03:14,678 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:03:14,678 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:03:14,678 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:03:14,678 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:03:14,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:03:14,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:03:14,678 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:03:14,678 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:03:14,678 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:03:14,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:03:14,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:03:14,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:03:14,679 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:03:14,679 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:03:14,679 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:03:14,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:03:14,679 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:03:14,679 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:03:14,679 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:03:14,679 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:03:14,680 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_da7562e5-993a-49b1-91a5-17f61b6f12d5/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06ef7f2efa2a7691ecaef299a937b3a52b6ee19dfe067204bd3fd1b2386eabbe [2024-11-28 05:03:15,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:03:15,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:03:15,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:03:15,047 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:03:15,047 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:03:15,049 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-50.i [2024-11-28 05:03:18,689 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/data/9ffeb651b/6b5d0675c2ac413fb6cc78a7b0cdbb8f/FLAGcaa4e4c84 [2024-11-28 05:03:19,127 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:03:19,129 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-50.i [2024-11-28 05:03:19,150 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/data/9ffeb651b/6b5d0675c2ac413fb6cc78a7b0cdbb8f/FLAGcaa4e4c84 [2024-11-28 05:03:19,168 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/data/9ffeb651b/6b5d0675c2ac413fb6cc78a7b0cdbb8f [2024-11-28 05:03:19,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:03:19,172 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:03:19,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:03:19,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:03:19,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:03:19,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:03:19" (1/1) ... [2024-11-28 05:03:19,182 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1750f1ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:19, skipping insertion in model container [2024-11-28 05:03:19,182 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:03:19" (1/1) ... [2024-11-28 05:03:19,242 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:03:19,439 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_da7562e5-993a-49b1-91a5-17f61b6f12d5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-50.i[916,929] [2024-11-28 05:03:19,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:03:19,760 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:03:19,780 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_da7562e5-993a-49b1-91a5-17f61b6f12d5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-50.i[916,929] [2024-11-28 05:03:19,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:03:20,006 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:03:20,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:20 WrapperNode [2024-11-28 05:03:20,007 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:03:20,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:03:20,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:03:20,009 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:03:20,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:20" (1/1) ... [2024-11-28 05:03:20,055 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:20" (1/1) ... [2024-11-28 05:03:20,287 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 711 [2024-11-28 05:03:20,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:03:20,290 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:03:20,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:03:20,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:03:20,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:20" (1/1) ... [2024-11-28 05:03:20,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:20" (1/1) ... [2024-11-28 05:03:20,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:20" (1/1) ... [2024-11-28 05:03:20,448 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]. [2024-11-28 05:03:20,449 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:20" (1/1) ... [2024-11-28 05:03:20,449 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:20" (1/1) ... [2024-11-28 05:03:20,514 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:20" (1/1) ... [2024-11-28 05:03:20,522 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:20" (1/1) ... [2024-11-28 05:03:20,540 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:20" (1/1) ... [2024-11-28 05:03:20,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:20" (1/1) ... [2024-11-28 05:03:20,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:20" (1/1) ... [2024-11-28 05:03:20,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:03:20,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:03:20,595 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:03:20,595 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:03:20,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:20" (1/1) ... [2024-11-28 05:03:20,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:03:20,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:03:20,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:03:20,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:03:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:03:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 05:03:20,718 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 05:03:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:03:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:03:20,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:03:20,988 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:03:20,991 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:03:23,057 INFO L? ?]: Removed 86 outVars from TransFormulas that were not future-live. [2024-11-28 05:03:23,058 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:03:23,091 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:03:23,094 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:03:23,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:23 BoogieIcfgContainer [2024-11-28 05:03:23,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:03:23,098 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:03:23,099 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:03:23,106 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:03:23,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:03:19" (1/3) ... [2024-11-28 05:03:23,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2765c1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:03:23, skipping insertion in model container [2024-11-28 05:03:23,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:20" (2/3) ... [2024-11-28 05:03:23,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2765c1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:03:23, skipping insertion in model container [2024-11-28 05:03:23,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:23" (3/3) ... [2024-11-28 05:03:23,113 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-50.i [2024-11-28 05:03:23,135 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:03:23,139 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-50.i that has 2 procedures, 279 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 05:03:23,258 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:03:23,279 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;@1fa35258, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:03:23,279 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:03:23,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 209 states have (on average 1.5263157894736843) internal successors, (319), 210 states have internal predecessors, (319), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-28 05:03:23,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-28 05:03:23,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:03:23,340 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:03:23,341 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:03:23,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:23,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1188749293, now seen corresponding path program 1 times [2024-11-28 05:03:23,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:03:23,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513755200] [2024-11-28 05:03:23,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:03:23,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:03:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:03:24,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-11-28 05:03:24,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:03:24,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513755200] [2024-11-28 05:03:24,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513755200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:03:24,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428016923] [2024-11-28 05:03:24,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:03:24,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:03:24,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:03:24,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:03:24,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:03:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:03:25,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 05:03:25,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:03:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-11-28 05:03:25,437 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:03:25,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428016923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:03:25,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:03:25,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 05:03:25,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383722657] [2024-11-28 05:03:25,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:03:25,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:03:25,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:03:25,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:03:25,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:03:25,488 INFO L87 Difference]: Start difference. First operand has 279 states, 209 states have (on average 1.5263157894736843) internal successors, (319), 210 states have internal predecessors, (319), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-28 05:03:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:03:25,563 INFO L93 Difference]: Finished difference Result 549 states and 965 transitions. [2024-11-28 05:03:25,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:03:25,566 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 474 [2024-11-28 05:03:25,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:03:25,586 INFO L225 Difference]: With dead ends: 549 [2024-11-28 05:03:25,586 INFO L226 Difference]: Without dead ends: 273 [2024-11-28 05:03:25,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:03:25,603 INFO L435 NwaCegarLoop]: 441 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:03:25,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:03:25,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-28 05:03:25,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2024-11-28 05:03:25,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 204 states have (on average 1.5049019607843137) internal successors, (307), 204 states have internal predecessors, (307), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-28 05:03:25,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 441 transitions. [2024-11-28 05:03:25,725 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 441 transitions. Word has length 474 [2024-11-28 05:03:25,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:03:25,726 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 441 transitions. [2024-11-28 05:03:25,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-28 05:03:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 441 transitions. [2024-11-28 05:03:25,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-28 05:03:25,742 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:03:25,742 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:03:25,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:03:25,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 05:03:25,943 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:03:25,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:25,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1986974411, now seen corresponding path program 1 times [2024-11-28 05:03:25,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:03:25,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293699958] [2024-11-28 05:03:25,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:03:25,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:03:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:03:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-28 05:03:27,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:03:27,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293699958] [2024-11-28 05:03:27,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293699958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:03:27,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:03:27,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:03:27,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156420796] [2024-11-28 05:03:27,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:03:27,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:03:27,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:03:27,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:03:27,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:03:27,055 INFO L87 Difference]: Start difference. First operand 273 states and 441 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:27,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:03:27,268 INFO L93 Difference]: Finished difference Result 729 states and 1176 transitions. [2024-11-28 05:03:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:03:27,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 474 [2024-11-28 05:03:27,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:03:27,274 INFO L225 Difference]: With dead ends: 729 [2024-11-28 05:03:27,275 INFO L226 Difference]: Without dead ends: 459 [2024-11-28 05:03:27,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:03:27,277 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 292 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:03:27,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 844 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:03:27,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-28 05:03:27,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 456. [2024-11-28 05:03:27,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 355 states have (on average 1.5126760563380282) internal successors, (537), 356 states have internal predecessors, (537), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-28 05:03:27,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 733 transitions. [2024-11-28 05:03:27,349 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 733 transitions. Word has length 474 [2024-11-28 05:03:27,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:03:27,350 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 733 transitions. [2024-11-28 05:03:27,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:27,351 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 733 transitions. [2024-11-28 05:03:27,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-28 05:03:27,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:03:27,369 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:03:27,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:03:27,370 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:03:27,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:27,372 INFO L85 PathProgramCache]: Analyzing trace with hash 75931853, now seen corresponding path program 1 times [2024-11-28 05:03:27,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:03:27,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436477218] [2024-11-28 05:03:27,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:03:27,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:03:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:03:28,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-28 05:03:28,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:03:28,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436477218] [2024-11-28 05:03:28,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436477218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:03:28,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:03:28,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:03:28,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291673695] [2024-11-28 05:03:28,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:03:28,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:03:28,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:03:28,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:03:28,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:03:28,139 INFO L87 Difference]: Start difference. First operand 456 states and 733 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:28,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:03:28,368 INFO L93 Difference]: Finished difference Result 1320 states and 2121 transitions. [2024-11-28 05:03:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:03:28,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 474 [2024-11-28 05:03:28,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:03:28,384 INFO L225 Difference]: With dead ends: 1320 [2024-11-28 05:03:28,384 INFO L226 Difference]: Without dead ends: 867 [2024-11-28 05:03:28,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:03:28,389 INFO L435 NwaCegarLoop]: 808 mSDtfsCounter, 409 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:03:28,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1234 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:03:28,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2024-11-28 05:03:28,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 865. [2024-11-28 05:03:28,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 664 states have (on average 1.4969879518072289) internal successors, (994), 666 states have internal predecessors, (994), 196 states have call successors, (196), 4 states have call predecessors, (196), 4 states have return successors, (196), 194 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-28 05:03:28,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1386 transitions. [2024-11-28 05:03:28,588 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1386 transitions. Word has length 474 [2024-11-28 05:03:28,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:03:28,593 INFO L471 AbstractCegarLoop]: Abstraction has 865 states and 1386 transitions. [2024-11-28 05:03:28,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:28,593 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1386 transitions. [2024-11-28 05:03:28,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-28 05:03:28,610 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:03:28,611 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:03:28,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:03:28,612 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:03:28,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:28,613 INFO L85 PathProgramCache]: Analyzing trace with hash 969418191, now seen corresponding path program 1 times [2024-11-28 05:03:28,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:03:28,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350030445] [2024-11-28 05:03:28,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:03:28,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:03:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:03:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-28 05:03:29,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:03:29,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350030445] [2024-11-28 05:03:29,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350030445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:03:29,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:03:29,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:03:29,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36203314] [2024-11-28 05:03:29,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:03:29,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:03:29,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:03:29,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:03:29,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:03:29,344 INFO L87 Difference]: Start difference. First operand 865 states and 1386 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:29,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:03:29,598 INFO L93 Difference]: Finished difference Result 2585 states and 4144 transitions. [2024-11-28 05:03:29,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:03:29,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 474 [2024-11-28 05:03:29,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:03:29,617 INFO L225 Difference]: With dead ends: 2585 [2024-11-28 05:03:29,617 INFO L226 Difference]: Without dead ends: 1723 [2024-11-28 05:03:29,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:03:29,623 INFO L435 NwaCegarLoop]: 801 mSDtfsCounter, 408 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:03:29,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 1220 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:03:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2024-11-28 05:03:29,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1718. [2024-11-28 05:03:29,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1317 states have (on average 1.4844343204252088) internal successors, (1955), 1321 states have internal predecessors, (1955), 392 states have call successors, (392), 8 states have call predecessors, (392), 8 states have return successors, (392), 388 states have call predecessors, (392), 392 states have call successors, (392) [2024-11-28 05:03:29,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2739 transitions. [2024-11-28 05:03:29,933 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2739 transitions. Word has length 474 [2024-11-28 05:03:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:03:29,935 INFO L471 AbstractCegarLoop]: Abstraction has 1718 states and 2739 transitions. [2024-11-28 05:03:29,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:29,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2739 transitions. [2024-11-28 05:03:29,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-28 05:03:29,952 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:03:29,953 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:03:29,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:03:29,953 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:03:29,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:29,955 INFO L85 PathProgramCache]: Analyzing trace with hash -962740337, now seen corresponding path program 1 times [2024-11-28 05:03:29,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:03:29,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854173236] [2024-11-28 05:03:29,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:03:29,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:03:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:03:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-28 05:03:30,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:03:30,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854173236] [2024-11-28 05:03:30,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854173236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:03:30,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:03:30,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:03:30,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839833069] [2024-11-28 05:03:30,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:03:30,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:03:30,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:03:30,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:03:30,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:03:30,546 INFO L87 Difference]: Start difference. First operand 1718 states and 2739 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:30,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:03:30,916 INFO L93 Difference]: Finished difference Result 5148 states and 8211 transitions. [2024-11-28 05:03:30,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:03:30,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 474 [2024-11-28 05:03:30,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:03:30,942 INFO L225 Difference]: With dead ends: 5148 [2024-11-28 05:03:30,942 INFO L226 Difference]: Without dead ends: 3433 [2024-11-28 05:03:30,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:03:30,950 INFO L435 NwaCegarLoop]: 443 mSDtfsCounter, 432 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:03:30,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 862 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:03:30,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2024-11-28 05:03:31,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 3399. [2024-11-28 05:03:31,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3399 states, 2598 states have (on average 1.4757505773672055) internal successors, (3834), 2606 states have internal predecessors, (3834), 784 states have call successors, (784), 16 states have call predecessors, (784), 16 states have return successors, (784), 776 states have call predecessors, (784), 784 states have call successors, (784) [2024-11-28 05:03:31,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3399 states to 3399 states and 5402 transitions. [2024-11-28 05:03:31,371 INFO L78 Accepts]: Start accepts. Automaton has 3399 states and 5402 transitions. Word has length 474 [2024-11-28 05:03:31,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:03:31,375 INFO L471 AbstractCegarLoop]: Abstraction has 3399 states and 5402 transitions. [2024-11-28 05:03:31,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:31,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3399 states and 5402 transitions. [2024-11-28 05:03:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-28 05:03:31,390 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:03:31,391 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:03:31,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:03:31,393 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:03:31,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:31,393 INFO L85 PathProgramCache]: Analyzing trace with hash -760152113, now seen corresponding path program 1 times [2024-11-28 05:03:31,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:03:31,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527194796] [2024-11-28 05:03:31,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:03:31,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:03:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:03:31,902 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-28 05:03:31,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:03:31,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527194796] [2024-11-28 05:03:31,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527194796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:03:31,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:03:31,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:03:31,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290161961] [2024-11-28 05:03:31,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:03:31,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:03:31,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:03:31,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:03:31,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:03:31,909 INFO L87 Difference]: Start difference. First operand 3399 states and 5402 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:32,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:03:32,527 INFO L93 Difference]: Finished difference Result 10131 states and 16080 transitions. [2024-11-28 05:03:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:03:32,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 474 [2024-11-28 05:03:32,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:03:32,576 INFO L225 Difference]: With dead ends: 10131 [2024-11-28 05:03:32,576 INFO L226 Difference]: Without dead ends: 6735 [2024-11-28 05:03:32,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:03:32,589 INFO L435 NwaCegarLoop]: 652 mSDtfsCounter, 373 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:03:32,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1070 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:03:32,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6735 states. [2024-11-28 05:03:33,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6735 to 6733. [2024-11-28 05:03:33,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6733 states, 5132 states have (on average 1.460639127045986) internal successors, (7496), 5148 states have internal predecessors, (7496), 1568 states have call successors, (1568), 32 states have call predecessors, (1568), 32 states have return successors, (1568), 1552 states have call predecessors, (1568), 1568 states have call successors, (1568) [2024-11-28 05:03:33,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6733 states to 6733 states and 10632 transitions. [2024-11-28 05:03:33,492 INFO L78 Accepts]: Start accepts. Automaton has 6733 states and 10632 transitions. Word has length 474 [2024-11-28 05:03:33,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:03:33,493 INFO L471 AbstractCegarLoop]: Abstraction has 6733 states and 10632 transitions. [2024-11-28 05:03:33,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 6733 states and 10632 transitions. [2024-11-28 05:03:33,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-11-28 05:03:33,507 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:03:33,508 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:03:33,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:03:33,508 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:03:33,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:33,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1191079968, now seen corresponding path program 1 times [2024-11-28 05:03:33,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:03:33,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807668330] [2024-11-28 05:03:33,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:03:33,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:03:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:03:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-28 05:03:34,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:03:34,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807668330] [2024-11-28 05:03:34,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807668330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:03:34,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:03:34,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:03:34,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547719776] [2024-11-28 05:03:34,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:03:34,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:03:34,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:03:34,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:03:34,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:03:34,283 INFO L87 Difference]: Start difference. First operand 6733 states and 10632 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:03:36,460 INFO L93 Difference]: Finished difference Result 22917 states and 36103 transitions. [2024-11-28 05:03:36,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:03:36,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 475 [2024-11-28 05:03:36,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:03:36,591 INFO L225 Difference]: With dead ends: 22917 [2024-11-28 05:03:36,591 INFO L226 Difference]: Without dead ends: 16187 [2024-11-28 05:03:36,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:03:36,621 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 985 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:03:36,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 1163 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 05:03:36,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16187 states. [2024-11-28 05:03:38,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16187 to 8177. [2024-11-28 05:03:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8177 states, 6576 states have (on average 1.4969586374695865) internal successors, (9844), 6592 states have internal predecessors, (9844), 1568 states have call successors, (1568), 32 states have call predecessors, (1568), 32 states have return successors, (1568), 1552 states have call predecessors, (1568), 1568 states have call successors, (1568) [2024-11-28 05:03:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8177 states to 8177 states and 12980 transitions. [2024-11-28 05:03:38,615 INFO L78 Accepts]: Start accepts. Automaton has 8177 states and 12980 transitions. Word has length 475 [2024-11-28 05:03:38,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:03:38,616 INFO L471 AbstractCegarLoop]: Abstraction has 8177 states and 12980 transitions. [2024-11-28 05:03:38,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:38,617 INFO L276 IsEmpty]: Start isEmpty. Operand 8177 states and 12980 transitions. [2024-11-28 05:03:38,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-28 05:03:38,628 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:03:38,629 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:03:38,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:03:38,629 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:03:38,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:38,630 INFO L85 PathProgramCache]: Analyzing trace with hash 809078197, now seen corresponding path program 1 times [2024-11-28 05:03:38,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:03:38,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761306497] [2024-11-28 05:03:38,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:03:38,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:03:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:03:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-28 05:03:40,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:03:40,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761306497] [2024-11-28 05:03:40,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761306497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:03:40,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:03:40,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:03:40,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841657834] [2024-11-28 05:03:40,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:03:40,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:03:40,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:03:40,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:03:40,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:03:40,500 INFO L87 Difference]: Start difference. First operand 8177 states and 12980 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:41,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:03:41,911 INFO L93 Difference]: Finished difference Result 22801 states and 35983 transitions. [2024-11-28 05:03:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:03:41,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 476 [2024-11-28 05:03:41,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:03:41,972 INFO L225 Difference]: With dead ends: 22801 [2024-11-28 05:03:41,972 INFO L226 Difference]: Without dead ends: 14627 [2024-11-28 05:03:41,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:03:41,999 INFO L435 NwaCegarLoop]: 527 mSDtfsCounter, 559 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:03:42,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1376 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:03:42,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14627 states. [2024-11-28 05:03:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14627 to 12199. [2024-11-28 05:03:43,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12199 states, 9798 states have (on average 1.4913247601551336) internal successors, (14612), 9822 states have internal predecessors, (14612), 2352 states have call successors, (2352), 48 states have call predecessors, (2352), 48 states have return successors, (2352), 2328 states have call predecessors, (2352), 2352 states have call successors, (2352) [2024-11-28 05:03:43,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12199 states to 12199 states and 19316 transitions. [2024-11-28 05:03:43,708 INFO L78 Accepts]: Start accepts. Automaton has 12199 states and 19316 transitions. Word has length 476 [2024-11-28 05:03:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:03:43,711 INFO L471 AbstractCegarLoop]: Abstraction has 12199 states and 19316 transitions. [2024-11-28 05:03:43,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:43,712 INFO L276 IsEmpty]: Start isEmpty. Operand 12199 states and 19316 transitions. [2024-11-28 05:03:43,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-28 05:03:43,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:03:43,725 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:03:43,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:03:43,728 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:03:43,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:43,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1097325069, now seen corresponding path program 1 times [2024-11-28 05:03:43,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:03:43,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664799711] [2024-11-28 05:03:43,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:03:43,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:03:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:03:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-28 05:03:46,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:03:46,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664799711] [2024-11-28 05:03:46,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664799711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:03:46,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:03:46,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:03:46,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426716390] [2024-11-28 05:03:46,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:03:46,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:03:46,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:03:46,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:03:46,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:03:46,799 INFO L87 Difference]: Start difference. First operand 12199 states and 19316 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:49,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:03:49,188 INFO L93 Difference]: Finished difference Result 39681 states and 62589 transitions. [2024-11-28 05:03:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:03:49,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 476 [2024-11-28 05:03:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:03:49,307 INFO L225 Difference]: With dead ends: 39681 [2024-11-28 05:03:49,307 INFO L226 Difference]: Without dead ends: 27485 [2024-11-28 05:03:49,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:03:49,352 INFO L435 NwaCegarLoop]: 714 mSDtfsCounter, 590 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:03:49,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1636 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:03:49,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27485 states. [2024-11-28 05:03:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27485 to 23775. [2024-11-28 05:03:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23775 states, 19790 states have (on average 1.492167761495705) internal successors, (29530), 19862 states have internal predecessors, (29530), 3888 states have call successors, (3888), 96 states have call predecessors, (3888), 96 states have return successors, (3888), 3816 states have call predecessors, (3888), 3888 states have call successors, (3888) [2024-11-28 05:03:51,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23775 states to 23775 states and 37306 transitions. [2024-11-28 05:03:51,507 INFO L78 Accepts]: Start accepts. Automaton has 23775 states and 37306 transitions. Word has length 476 [2024-11-28 05:03:51,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:03:51,508 INFO L471 AbstractCegarLoop]: Abstraction has 23775 states and 37306 transitions. [2024-11-28 05:03:51,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:51,508 INFO L276 IsEmpty]: Start isEmpty. Operand 23775 states and 37306 transitions. [2024-11-28 05:03:51,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-28 05:03:51,528 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:03:51,528 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:03:51,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:03:51,529 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:03:51,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:51,529 INFO L85 PathProgramCache]: Analyzing trace with hash 779157749, now seen corresponding path program 1 times [2024-11-28 05:03:51,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:03:51,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714788339] [2024-11-28 05:03:51,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:03:51,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:03:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:03:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-28 05:03:52,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:03:52,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714788339] [2024-11-28 05:03:52,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714788339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:03:52,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:03:52,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:03:52,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69188042] [2024-11-28 05:03:52,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:03:52,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:03:52,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:03:52,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:03:52,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:03:52,549 INFO L87 Difference]: Start difference. First operand 23775 states and 37306 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:54,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:03:54,536 INFO L93 Difference]: Finished difference Result 58639 states and 92040 transitions. [2024-11-28 05:03:54,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:03:54,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 476 [2024-11-28 05:03:54,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:03:54,692 INFO L225 Difference]: With dead ends: 58639 [2024-11-28 05:03:54,692 INFO L226 Difference]: Without dead ends: 34867 [2024-11-28 05:03:54,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:03:54,746 INFO L435 NwaCegarLoop]: 650 mSDtfsCounter, 301 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:03:54,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1070 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:03:54,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34867 states. [2024-11-28 05:03:58,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34867 to 34865. [2024-11-28 05:03:58,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34865 states, 28888 states have (on average 1.483314871226807) internal successors, (42850), 28996 states have internal predecessors, (42850), 5832 states have call successors, (5832), 144 states have call predecessors, (5832), 144 states have return successors, (5832), 5724 states have call predecessors, (5832), 5832 states have call successors, (5832) [2024-11-28 05:03:58,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34865 states to 34865 states and 54514 transitions. [2024-11-28 05:03:58,220 INFO L78 Accepts]: Start accepts. Automaton has 34865 states and 54514 transitions. Word has length 476 [2024-11-28 05:03:58,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:03:58,221 INFO L471 AbstractCegarLoop]: Abstraction has 34865 states and 54514 transitions. [2024-11-28 05:03:58,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:03:58,222 INFO L276 IsEmpty]: Start isEmpty. Operand 34865 states and 54514 transitions. [2024-11-28 05:03:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2024-11-28 05:03:58,241 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:03:58,242 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:03:58,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 05:03:58,242 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:03:58,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:58,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2033105780, now seen corresponding path program 1 times [2024-11-28 05:03:58,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:03:58,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615935865] [2024-11-28 05:03:58,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:03:58,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:03:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:03:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-28 05:03:59,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:03:59,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615935865] [2024-11-28 05:03:59,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615935865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:03:59,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:03:59,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:03:59,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670946727] [2024-11-28 05:03:59,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:03:59,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:03:59,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:03:59,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:03:59,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:03:59,623 INFO L87 Difference]: Start difference. First operand 34865 states and 54514 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:04:03,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:03,713 INFO L93 Difference]: Finished difference Result 88463 states and 137993 transitions. [2024-11-28 05:04:03,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:04:03,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 477 [2024-11-28 05:04:03,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:03,955 INFO L225 Difference]: With dead ends: 88463 [2024-11-28 05:04:03,956 INFO L226 Difference]: Without dead ends: 53601 [2024-11-28 05:04:04,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:04:04,015 INFO L435 NwaCegarLoop]: 774 mSDtfsCounter, 828 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:04,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 2018 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:04:04,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53601 states. [2024-11-28 05:04:07,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53601 to 41822. [2024-11-28 05:04:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41822 states, 33386 states have (on average 1.4623494878092613) internal successors, (48822), 33543 states have internal predecessors, (48822), 8217 states have call successors, (8217), 218 states have call predecessors, (8217), 218 states have return successors, (8217), 8060 states have call predecessors, (8217), 8217 states have call successors, (8217) [2024-11-28 05:04:07,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41822 states to 41822 states and 65256 transitions. [2024-11-28 05:04:07,804 INFO L78 Accepts]: Start accepts. Automaton has 41822 states and 65256 transitions. Word has length 477 [2024-11-28 05:04:07,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:07,805 INFO L471 AbstractCegarLoop]: Abstraction has 41822 states and 65256 transitions. [2024-11-28 05:04:07,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:04:07,806 INFO L276 IsEmpty]: Start isEmpty. Operand 41822 states and 65256 transitions. [2024-11-28 05:04:07,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2024-11-28 05:04:07,826 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:07,826 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:07,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 05:04:07,827 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:04:07,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:07,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1422571345, now seen corresponding path program 1 times [2024-11-28 05:04:07,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:07,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293273902] [2024-11-28 05:04:07,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:07,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:11,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-28 05:04:11,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:11,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293273902] [2024-11-28 05:04:11,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293273902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:11,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:11,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:04:11,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154462564] [2024-11-28 05:04:11,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:11,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:04:11,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:11,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:04:11,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:04:11,445 INFO L87 Difference]: Start difference. First operand 41822 states and 65256 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:04:15,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:15,366 INFO L93 Difference]: Finished difference Result 79550 states and 123787 transitions. [2024-11-28 05:04:15,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:04:15,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 477 [2024-11-28 05:04:15,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:15,582 INFO L225 Difference]: With dead ends: 79550 [2024-11-28 05:04:15,583 INFO L226 Difference]: Without dead ends: 51158 [2024-11-28 05:04:15,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:04:15,652 INFO L435 NwaCegarLoop]: 427 mSDtfsCounter, 627 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:15,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1677 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 05:04:15,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51158 states. [2024-11-28 05:04:18,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51158 to 45148. [2024-11-28 05:04:18,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45148 states, 36677 states have (on average 1.4681680617280584) internal successors, (53848), 36833 states have internal predecessors, (53848), 8251 states have call successors, (8251), 219 states have call predecessors, (8251), 219 states have return successors, (8251), 8095 states have call predecessors, (8251), 8251 states have call successors, (8251) [2024-11-28 05:04:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45148 states to 45148 states and 70350 transitions. [2024-11-28 05:04:18,358 INFO L78 Accepts]: Start accepts. Automaton has 45148 states and 70350 transitions. Word has length 477 [2024-11-28 05:04:18,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:18,359 INFO L471 AbstractCegarLoop]: Abstraction has 45148 states and 70350 transitions. [2024-11-28 05:04:18,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-28 05:04:18,359 INFO L276 IsEmpty]: Start isEmpty. Operand 45148 states and 70350 transitions. [2024-11-28 05:04:18,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2024-11-28 05:04:18,375 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:18,375 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:18,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:04:18,375 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:04:18,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:18,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1029631833, now seen corresponding path program 1 times [2024-11-28 05:04:18,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:18,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721647167] [2024-11-28 05:04:18,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:18,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 90 proven. 108 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-28 05:04:23,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:23,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721647167] [2024-11-28 05:04:23,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721647167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:23,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198654833] [2024-11-28 05:04:23,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:23,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:23,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:23,674 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:23,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:04:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:24,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:04:24,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 2038 proven. 24 refuted. 0 times theorem prover too weak. 6782 trivial. 0 not checked. [2024-11-28 05:04:25,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 174 proven. 24 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-28 05:04:26,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198654833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:04:26,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:04:26,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 8] total 17 [2024-11-28 05:04:26,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532520074] [2024-11-28 05:04:26,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:04:26,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 05:04:26,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:26,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 05:04:26,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:04:26,569 INFO L87 Difference]: Start difference. First operand 45148 states and 70350 transitions. Second operand has 17 states, 17 states have (on average 20.58823529411765) internal successors, (350), 17 states have internal predecessors, (350), 6 states have call successors, (201), 3 states have call predecessors, (201), 6 states have return successors, (201), 6 states have call predecessors, (201), 6 states have call successors, (201) [2024-11-28 05:04:35,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:35,672 INFO L93 Difference]: Finished difference Result 162618 states and 250663 transitions. [2024-11-28 05:04:35,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 05:04:35,673 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.58823529411765) internal successors, (350), 17 states have internal predecessors, (350), 6 states have call successors, (201), 3 states have call predecessors, (201), 6 states have return successors, (201), 6 states have call predecessors, (201), 6 states have call successors, (201) Word has length 477 [2024-11-28 05:04:35,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:36,312 INFO L225 Difference]: With dead ends: 162618 [2024-11-28 05:04:36,312 INFO L226 Difference]: Without dead ends: 117641 [2024-11-28 05:04:36,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 945 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=945, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 05:04:36,463 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 2385 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2416 SdHoareTripleChecker+Valid, 3102 SdHoareTripleChecker+Invalid, 2435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:36,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2416 Valid, 3102 Invalid, 2435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 05:04:36,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117641 states. [2024-11-28 05:04:44,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117641 to 85221. [2024-11-28 05:04:44,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85221 states, 68480 states have (on average 1.446685163551402) internal successors, (99069), 68792 states have internal predecessors, (99069), 16051 states have call successors, (16051), 689 states have call predecessors, (16051), 689 states have return successors, (16051), 15739 states have call predecessors, (16051), 16051 states have call successors, (16051) [2024-11-28 05:04:45,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85221 states to 85221 states and 131171 transitions. [2024-11-28 05:04:45,324 INFO L78 Accepts]: Start accepts. Automaton has 85221 states and 131171 transitions. Word has length 477 [2024-11-28 05:04:45,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:45,324 INFO L471 AbstractCegarLoop]: Abstraction has 85221 states and 131171 transitions. [2024-11-28 05:04:45,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.58823529411765) internal successors, (350), 17 states have internal predecessors, (350), 6 states have call successors, (201), 3 states have call predecessors, (201), 6 states have return successors, (201), 6 states have call predecessors, (201), 6 states have call successors, (201) [2024-11-28 05:04:45,325 INFO L276 IsEmpty]: Start isEmpty. Operand 85221 states and 131171 transitions. [2024-11-28 05:04:45,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2024-11-28 05:04:45,337 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:45,337 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:45,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:04:45,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:45,538 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:04:45,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:45,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1167916635, now seen corresponding path program 1 times [2024-11-28 05:04:45,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:45,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439192681] [2024-11-28 05:04:45,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:45,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 135 proven. 63 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-28 05:04:49,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:49,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439192681] [2024-11-28 05:04:49,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439192681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:49,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579839543] [2024-11-28 05:04:49,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:49,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:49,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:49,266 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:49,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:04:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:49,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 1238 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:04:49,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3936 proven. 63 refuted. 0 times theorem prover too weak. 4845 trivial. 0 not checked. [2024-11-28 05:04:50,275 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 135 proven. 63 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-28 05:04:50,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579839543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:04:50,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:04:50,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-28 05:04:50,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80714622] [2024-11-28 05:04:50,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:04:50,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:04:50,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:50,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:04:50,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:04:50,946 INFO L87 Difference]: Start difference. First operand 85221 states and 131171 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (88), 2 states have call predecessors, (88), 4 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-28 05:04:57,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:57,063 INFO L93 Difference]: Finished difference Result 171969 states and 263567 transitions. [2024-11-28 05:04:57,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:04:57,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (88), 2 states have call predecessors, (88), 4 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 477 [2024-11-28 05:04:57,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:57,386 INFO L225 Difference]: With dead ends: 171969 [2024-11-28 05:04:57,386 INFO L226 Difference]: Without dead ends: 87083 [2024-11-28 05:04:57,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 960 GetRequests, 951 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:04:57,534 INFO L435 NwaCegarLoop]: 361 mSDtfsCounter, 288 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:57,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 946 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:04:57,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87083 states. [2024-11-28 05:05:03,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87083 to 85705. [2024-11-28 05:05:03,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85705 states, 68843 states have (on average 1.436340659181035) internal successors, (98882), 69155 states have internal predecessors, (98882), 16051 states have call successors, (16051), 810 states have call predecessors, (16051), 810 states have return successors, (16051), 15739 states have call predecessors, (16051), 16051 states have call successors, (16051) [2024-11-28 05:05:03,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85705 states to 85705 states and 130984 transitions. [2024-11-28 05:05:03,704 INFO L78 Accepts]: Start accepts. Automaton has 85705 states and 130984 transitions. Word has length 477 [2024-11-28 05:05:03,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:05:03,705 INFO L471 AbstractCegarLoop]: Abstraction has 85705 states and 130984 transitions. [2024-11-28 05:05:03,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (88), 2 states have call predecessors, (88), 4 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-28 05:05:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 85705 states and 130984 transitions. [2024-11-28 05:05:03,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-28 05:05:03,715 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:05:03,715 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:05:03,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:05:03,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da7562e5-993a-49b1-91a5-17f61b6f12d5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:03,916 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:05:03,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:03,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1396771902, now seen corresponding path program 1 times [2024-11-28 05:05:03,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:03,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553362938] [2024-11-28 05:05:03,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:03,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-28 05:05:05,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:05,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553362938] [2024-11-28 05:05:05,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553362938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:05,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:05,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:05:05,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227469929] [2024-11-28 05:05:05,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:05,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:05:05,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:05,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:05:05,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:05:05,004 INFO L87 Difference]: Start difference. First operand 85705 states and 130984 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67)