./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label33.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/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_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label33.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/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_130ab9be-6802-4be0-9e74-ced7f3a6d42d/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 18ad5ec6bc1db1d6d896db79319bb0ca45f8aff62ac630628a891f63c8426bb4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:24:16,621 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:24:16,737 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:24:16,748 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:24:16,749 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:24:16,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:24:16,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:24:16,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:24:16,802 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:24:16,802 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:24:16,802 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:24:16,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:24:16,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:24:16,804 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:24:16,806 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:24:16,806 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:24:16,806 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:24:16,807 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:24:16,807 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:24:16,807 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:24:16,807 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:24:16,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:24:16,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:24:16,807 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:24:16,807 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:24:16,807 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:24:16,808 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:24:16,808 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:24:16,808 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:24:16,808 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:24:16,808 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:24:16,808 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:24:16,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:24:16,809 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:24:16,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:24:16,809 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:24:16,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:24:16,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:24:16,810 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:24:16,810 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:24:16,810 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:24:16,811 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:24:16,811 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:24:16,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:24:16,811 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:24:16,811 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:24:16,812 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:24:16,812 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:24:16,812 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_130ab9be-6802-4be0-9e74-ced7f3a6d42d/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 -> 18ad5ec6bc1db1d6d896db79319bb0ca45f8aff62ac630628a891f63c8426bb4 [2024-11-28 05:24:17,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:24:17,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:24:17,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:24:17,214 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:24:17,214 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:24:17,216 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem12_label33.c [2024-11-28 05:24:20,869 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/data/ed454a578/b71a7105164d48cdb34ca680f538a48c/FLAGb1e133710 [2024-11-28 05:24:21,659 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:24:21,660 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/sv-benchmarks/c/eca-rers2012/Problem12_label33.c [2024-11-28 05:24:21,700 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/data/ed454a578/b71a7105164d48cdb34ca680f538a48c/FLAGb1e133710 [2024-11-28 05:24:21,727 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/data/ed454a578/b71a7105164d48cdb34ca680f538a48c [2024-11-28 05:24:21,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:24:21,734 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:24:21,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:24:21,737 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:24:21,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:24:21,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:24:21" (1/1) ... [2024-11-28 05:24:21,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b5b297a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:21, skipping insertion in model container [2024-11-28 05:24:21,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:24:21" (1/1) ... [2024-11-28 05:24:21,896 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:24:22,228 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_130ab9be-6802-4be0-9e74-ced7f3a6d42d/sv-benchmarks/c/eca-rers2012/Problem12_label33.c[6146,6159] [2024-11-28 05:24:23,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:24:23,357 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:24:23,397 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_130ab9be-6802-4be0-9e74-ced7f3a6d42d/sv-benchmarks/c/eca-rers2012/Problem12_label33.c[6146,6159] [2024-11-28 05:24:24,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:24:24,039 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:24:24,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:24 WrapperNode [2024-11-28 05:24:24,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:24:24,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:24:24,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:24:24,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:24:24,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:24" (1/1) ... [2024-11-28 05:24:24,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:24" (1/1) ... [2024-11-28 05:24:24,576 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-28 05:24:24,577 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:24:24,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:24:24,579 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:24:24,579 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:24:24,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:24" (1/1) ... [2024-11-28 05:24:24,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:24" (1/1) ... [2024-11-28 05:24:24,645 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:24" (1/1) ... [2024-11-28 05:24:24,908 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 05:24:24,908 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:24" (1/1) ... [2024-11-28 05:24:24,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:24" (1/1) ... [2024-11-28 05:24:25,116 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:24" (1/1) ... [2024-11-28 05:24:25,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:24" (1/1) ... [2024-11-28 05:24:25,173 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:24" (1/1) ... [2024-11-28 05:24:25,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:24" (1/1) ... [2024-11-28 05:24:25,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:24" (1/1) ... [2024-11-28 05:24:25,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:24:25,289 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:24:25,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:24:25,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:24:25,291 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:24" (1/1) ... [2024-11-28 05:24:25,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:24:25,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:25,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:24:25,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:24:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:24:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:24:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:24:25,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:24:25,484 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:24:25,486 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:24:33,278 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-28 05:24:33,279 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:24:33,341 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:24:33,341 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:24:33,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:24:33 BoogieIcfgContainer [2024-11-28 05:24:33,342 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:24:33,349 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:24:33,349 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:24:33,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:24:33,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:24:21" (1/3) ... [2024-11-28 05:24:33,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9a6848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:24:33, skipping insertion in model container [2024-11-28 05:24:33,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:24:24" (2/3) ... [2024-11-28 05:24:33,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9a6848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:24:33, skipping insertion in model container [2024-11-28 05:24:33,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:24:33" (3/3) ... [2024-11-28 05:24:33,365 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem12_label33.c [2024-11-28 05:24:33,386 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:24:33,388 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem12_label33.c that has 1 procedures, 818 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 05:24:33,513 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:24:33,537 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;@3d5d5aa9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:24:33,538 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:24:33,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:24:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 05:24:33,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:33,563 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:33,564 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:24:33,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:33,572 INFO L85 PathProgramCache]: Analyzing trace with hash 301649817, now seen corresponding path program 1 times [2024-11-28 05:24:33,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:33,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702635555] [2024-11-28 05:24:33,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:33,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:34,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:34,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702635555] [2024-11-28 05:24:34,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702635555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:34,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:34,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:24:34,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016376765] [2024-11-28 05:24:34,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:34,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:24:34,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:34,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:24:34,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:24:34,479 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:24:45,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:45,472 INFO L93 Difference]: Finished difference Result 3142 states and 6130 transitions. [2024-11-28 05:24:45,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:24:45,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-28 05:24:45,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:45,516 INFO L225 Difference]: With dead ends: 3142 [2024-11-28 05:24:45,516 INFO L226 Difference]: Without dead ends: 2257 [2024-11-28 05:24:45,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:24:45,531 INFO L435 NwaCegarLoop]: 738 mSDtfsCounter, 2223 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 5499 mSolverCounterSat, 1273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 6772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1273 IncrementalHoareTripleChecker+Valid, 5499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:45,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2223 Valid, 765 Invalid, 6772 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1273 Valid, 5499 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2024-11-28 05:24:45,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2024-11-28 05:24:45,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2024-11-28 05:24:45,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.5749113475177305) internal successors, (3553), 2256 states have internal predecessors, (3553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:24:45,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3553 transitions. [2024-11-28 05:24:45,731 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3553 transitions. Word has length 49 [2024-11-28 05:24:45,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:45,734 INFO L471 AbstractCegarLoop]: Abstraction has 2257 states and 3553 transitions. [2024-11-28 05:24:45,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:24:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3553 transitions. [2024-11-28 05:24:45,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-28 05:24:45,742 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:45,742 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:45,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:24:45,743 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:24:45,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:45,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2123608565, now seen corresponding path program 1 times [2024-11-28 05:24:45,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:45,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423954893] [2024-11-28 05:24:45,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:45,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:24:46,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:46,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423954893] [2024-11-28 05:24:46,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423954893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:46,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:46,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:24:46,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136443646] [2024-11-28 05:24:46,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:46,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:24:46,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:46,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:24:46,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:24:46,492 INFO L87 Difference]: Start difference. First operand 2257 states and 3553 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:24:53,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:53,232 INFO L93 Difference]: Finished difference Result 6051 states and 9916 transitions. [2024-11-28 05:24:53,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:24:53,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-11-28 05:24:53,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:53,250 INFO L225 Difference]: With dead ends: 6051 [2024-11-28 05:24:53,250 INFO L226 Difference]: Without dead ends: 3759 [2024-11-28 05:24:53,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:24:53,255 INFO L435 NwaCegarLoop]: 674 mSDtfsCounter, 688 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3779 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 4443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:53,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 692 Invalid, 4443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3779 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-28 05:24:53,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2024-11-28 05:24:53,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3008. [2024-11-28 05:24:53,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.4319920186232125) internal successors, (4306), 3007 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:24:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4306 transitions. [2024-11-28 05:24:53,344 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4306 transitions. Word has length 120 [2024-11-28 05:24:53,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:53,345 INFO L471 AbstractCegarLoop]: Abstraction has 3008 states and 4306 transitions. [2024-11-28 05:24:53,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:24:53,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4306 transitions. [2024-11-28 05:24:53,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-28 05:24:53,351 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:53,351 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:24:53,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:24:53,352 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:24:53,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:53,353 INFO L85 PathProgramCache]: Analyzing trace with hash -819857147, now seen corresponding path program 1 times [2024-11-28 05:24:53,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:53,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203275574] [2024-11-28 05:24:53,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:53,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:53,999 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-28 05:24:54,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:54,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203275574] [2024-11-28 05:24:54,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203275574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:54,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:54,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:24:54,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485701615] [2024-11-28 05:24:54,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:54,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:24:54,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:54,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:24:54,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:24:54,006 INFO L87 Difference]: Start difference. First operand 3008 states and 4306 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:24:58,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:58,063 INFO L93 Difference]: Finished difference Result 8267 states and 11519 transitions. [2024-11-28 05:24:58,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:24:58,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2024-11-28 05:24:58,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:58,083 INFO L225 Difference]: With dead ends: 8267 [2024-11-28 05:24:58,083 INFO L226 Difference]: Without dead ends: 5261 [2024-11-28 05:24:58,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:24:58,088 INFO L435 NwaCegarLoop]: 421 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:58,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 427 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 05:24:58,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2024-11-28 05:24:58,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2024-11-28 05:24:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.1982889733840305) internal successors, (6303), 5260 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:24:58,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 6303 transitions. [2024-11-28 05:24:58,189 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 6303 transitions. Word has length 259 [2024-11-28 05:24:58,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:58,190 INFO L471 AbstractCegarLoop]: Abstraction has 5261 states and 6303 transitions. [2024-11-28 05:24:58,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:24:58,190 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 6303 transitions. [2024-11-28 05:24:58,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-28 05:24:58,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:58,197 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:58,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:24:58,197 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:24:58,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:58,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2005660694, now seen corresponding path program 1 times [2024-11-28 05:24:58,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:58,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634774779] [2024-11-28 05:24:58,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:58,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:58,936 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 05:24:58,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:58,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634774779] [2024-11-28 05:24:58,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634774779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:24:58,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:24:58,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:24:58,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017856745] [2024-11-28 05:24:58,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:24:58,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:24:58,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:58,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:24:58,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:24:58,940 INFO L87 Difference]: Start difference. First operand 5261 states and 6303 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:04,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:04,743 INFO L93 Difference]: Finished difference Result 12061 states and 15068 transitions. [2024-11-28 05:25:04,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:25:04,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 261 [2024-11-28 05:25:04,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:04,772 INFO L225 Difference]: With dead ends: 12061 [2024-11-28 05:25:04,772 INFO L226 Difference]: Without dead ends: 7516 [2024-11-28 05:25:04,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:25:04,781 INFO L435 NwaCegarLoop]: 311 mSDtfsCounter, 850 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 3961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:04,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 326 Invalid, 3961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-28 05:25:04,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7516 states. [2024-11-28 05:25:04,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7516 to 7514. [2024-11-28 05:25:04,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7514 states, 7513 states have (on average 1.1812857713296951) internal successors, (8875), 7513 states have internal predecessors, (8875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:04,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7514 states to 7514 states and 8875 transitions. [2024-11-28 05:25:04,991 INFO L78 Accepts]: Start accepts. Automaton has 7514 states and 8875 transitions. Word has length 261 [2024-11-28 05:25:04,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:04,992 INFO L471 AbstractCegarLoop]: Abstraction has 7514 states and 8875 transitions. [2024-11-28 05:25:04,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 7514 states and 8875 transitions. [2024-11-28 05:25:04,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-28 05:25:04,999 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:05,000 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:05,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:25:05,000 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:05,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:05,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1457848671, now seen corresponding path program 1 times [2024-11-28 05:25:05,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:05,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491481238] [2024-11-28 05:25:05,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:05,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-28 05:25:06,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:06,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491481238] [2024-11-28 05:25:06,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491481238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:06,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:06,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:25:06,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957004883] [2024-11-28 05:25:06,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:06,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:25:06,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:06,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:25:06,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:25:06,028 INFO L87 Difference]: Start difference. First operand 7514 states and 8875 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:11,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:11,003 INFO L93 Difference]: Finished difference Result 16528 states and 20146 transitions. [2024-11-28 05:25:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:25:11,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2024-11-28 05:25:11,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:11,037 INFO L225 Difference]: With dead ends: 16528 [2024-11-28 05:25:11,038 INFO L226 Difference]: Without dead ends: 9767 [2024-11-28 05:25:11,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 05:25:11,046 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 826 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 3018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 989 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:11,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 139 Invalid, 3018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [989 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-28 05:25:11,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2024-11-28 05:25:11,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2024-11-28 05:25:11,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.207352037681753) internal successors, (11791), 9766 states have internal predecessors, (11791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 11791 transitions. [2024-11-28 05:25:11,271 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 11791 transitions. Word has length 338 [2024-11-28 05:25:11,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:11,271 INFO L471 AbstractCegarLoop]: Abstraction has 9767 states and 11791 transitions. [2024-11-28 05:25:11,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:11,272 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 11791 transitions. [2024-11-28 05:25:11,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-28 05:25:11,286 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:11,286 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:11,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:25:11,287 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:11,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:11,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1945795235, now seen corresponding path program 1 times [2024-11-28 05:25:11,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:11,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918942255] [2024-11-28 05:25:11,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:11,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-28 05:25:12,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:12,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918942255] [2024-11-28 05:25:12,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918942255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:12,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:12,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:25:12,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387811774] [2024-11-28 05:25:12,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:12,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:25:12,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:12,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:25:12,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:25:12,220 INFO L87 Difference]: Start difference. First operand 9767 states and 11791 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:16,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:16,472 INFO L93 Difference]: Finished difference Result 21034 states and 25744 transitions. [2024-11-28 05:25:16,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:25:16,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 362 [2024-11-28 05:25:16,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:16,507 INFO L225 Difference]: With dead ends: 21034 [2024-11-28 05:25:16,507 INFO L226 Difference]: Without dead ends: 12020 [2024-11-28 05:25:16,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 05:25:16,523 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:16,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 105 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 05:25:16,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12020 states. [2024-11-28 05:25:16,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12020 to 12020. [2024-11-28 05:25:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.1926116981446044) internal successors, (14334), 12019 states have internal predecessors, (14334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:16,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 14334 transitions. [2024-11-28 05:25:16,757 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 14334 transitions. Word has length 362 [2024-11-28 05:25:16,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:16,758 INFO L471 AbstractCegarLoop]: Abstraction has 12020 states and 14334 transitions. [2024-11-28 05:25:16,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:16,759 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 14334 transitions. [2024-11-28 05:25:16,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-28 05:25:16,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:16,768 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:16,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:25:16,768 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:16,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:16,769 INFO L85 PathProgramCache]: Analyzing trace with hash 982786, now seen corresponding path program 1 times [2024-11-28 05:25:16,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:16,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226220751] [2024-11-28 05:25:16,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:16,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-28 05:25:17,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:17,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226220751] [2024-11-28 05:25:17,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226220751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:17,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:17,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:25:17,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095445314] [2024-11-28 05:25:17,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:17,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:25:17,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:17,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:25:17,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:25:17,291 INFO L87 Difference]: Start difference. First operand 12020 states and 14334 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:22,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:22,420 INFO L93 Difference]: Finished difference Result 33801 states and 40725 transitions. [2024-11-28 05:25:22,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:25:22,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 376 [2024-11-28 05:25:22,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:22,463 INFO L225 Difference]: With dead ends: 33801 [2024-11-28 05:25:22,463 INFO L226 Difference]: Without dead ends: 22534 [2024-11-28 05:25:22,476 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 05:25:22,478 INFO L435 NwaCegarLoop]: 1322 mSDtfsCounter, 635 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:22,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1330 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-28 05:25:22,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22534 states. [2024-11-28 05:25:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22534 to 21032. [2024-11-28 05:25:22,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21032 states, 21031 states have (on average 1.182825353050259) internal successors, (24876), 21031 states have internal predecessors, (24876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21032 states to 21032 states and 24876 transitions. [2024-11-28 05:25:22,826 INFO L78 Accepts]: Start accepts. Automaton has 21032 states and 24876 transitions. Word has length 376 [2024-11-28 05:25:22,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:22,826 INFO L471 AbstractCegarLoop]: Abstraction has 21032 states and 24876 transitions. [2024-11-28 05:25:22,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:22,827 INFO L276 IsEmpty]: Start isEmpty. Operand 21032 states and 24876 transitions. [2024-11-28 05:25:22,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-28 05:25:22,837 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:22,837 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:22,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:25:22,837 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:22,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:22,838 INFO L85 PathProgramCache]: Analyzing trace with hash -51249649, now seen corresponding path program 1 times [2024-11-28 05:25:22,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:22,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564925651] [2024-11-28 05:25:22,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:22,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-28 05:25:23,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:23,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564925651] [2024-11-28 05:25:23,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564925651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:23,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:23,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:25:23,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405036969] [2024-11-28 05:25:23,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:23,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:25:23,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:23,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:25:23,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:25:23,313 INFO L87 Difference]: Start difference. First operand 21032 states and 24876 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:28,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:28,575 INFO L93 Difference]: Finished difference Result 49572 states and 59456 transitions. [2024-11-28 05:25:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:25:28,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2024-11-28 05:25:28,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:28,633 INFO L225 Difference]: With dead ends: 49572 [2024-11-28 05:25:28,633 INFO L226 Difference]: Without dead ends: 29293 [2024-11-28 05:25:28,653 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 05:25:28,654 INFO L435 NwaCegarLoop]: 1311 mSDtfsCounter, 711 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:28,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1319 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-28 05:25:28,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29293 states. [2024-11-28 05:25:28,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29293 to 28542. [2024-11-28 05:25:29,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28542 states, 28541 states have (on average 1.1838407904418204) internal successors, (33788), 28541 states have internal predecessors, (33788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28542 states to 28542 states and 33788 transitions. [2024-11-28 05:25:29,072 INFO L78 Accepts]: Start accepts. Automaton has 28542 states and 33788 transitions. Word has length 377 [2024-11-28 05:25:29,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:29,073 INFO L471 AbstractCegarLoop]: Abstraction has 28542 states and 33788 transitions. [2024-11-28 05:25:29,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 28542 states and 33788 transitions. [2024-11-28 05:25:29,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-11-28 05:25:29,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:29,084 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:29,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:25:29,084 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:29,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:29,085 INFO L85 PathProgramCache]: Analyzing trace with hash 108402636, now seen corresponding path program 1 times [2024-11-28 05:25:29,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:29,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246573438] [2024-11-28 05:25:29,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:29,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-28 05:25:29,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:29,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246573438] [2024-11-28 05:25:29,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246573438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:29,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:29,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:25:29,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963639220] [2024-11-28 05:25:29,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:29,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:25:29,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:29,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:25:29,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:25:29,494 INFO L87 Difference]: Start difference. First operand 28542 states and 33788 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:34,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:34,312 INFO L93 Difference]: Finished difference Result 81114 states and 96711 transitions. [2024-11-28 05:25:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:25:34,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 380 [2024-11-28 05:25:34,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:34,372 INFO L225 Difference]: With dead ends: 81114 [2024-11-28 05:25:34,372 INFO L226 Difference]: Without dead ends: 49570 [2024-11-28 05:25:34,400 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 05:25:34,401 INFO L435 NwaCegarLoop]: 1258 mSDtfsCounter, 754 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:34,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1266 Invalid, 2806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 05:25:34,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49570 states. [2024-11-28 05:25:34,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49570 to 48819. [2024-11-28 05:25:34,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48819 states, 48818 states have (on average 1.1366094473349995) internal successors, (55487), 48818 states have internal predecessors, (55487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:35,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48819 states to 48819 states and 55487 transitions. [2024-11-28 05:25:35,050 INFO L78 Accepts]: Start accepts. Automaton has 48819 states and 55487 transitions. Word has length 380 [2024-11-28 05:25:35,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:35,052 INFO L471 AbstractCegarLoop]: Abstraction has 48819 states and 55487 transitions. [2024-11-28 05:25:35,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:35,053 INFO L276 IsEmpty]: Start isEmpty. Operand 48819 states and 55487 transitions. [2024-11-28 05:25:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-11-28 05:25:35,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:35,068 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:35,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:25:35,069 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:35,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:35,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1333574750, now seen corresponding path program 1 times [2024-11-28 05:25:35,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:35,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448892718] [2024-11-28 05:25:35,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:35,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:35,609 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-28 05:25:35,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:35,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448892718] [2024-11-28 05:25:35,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448892718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:35,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:25:35,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:25:35,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629738953] [2024-11-28 05:25:35,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:35,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:25:35,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:35,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:25:35,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:25:35,612 INFO L87 Difference]: Start difference. First operand 48819 states and 55487 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:40,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:40,180 INFO L93 Difference]: Finished difference Result 96885 states and 110216 transitions. [2024-11-28 05:25:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:25:40,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 443 [2024-11-28 05:25:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:40,230 INFO L225 Difference]: With dead ends: 96885 [2024-11-28 05:25:40,230 INFO L226 Difference]: Without dead ends: 48819 [2024-11-28 05:25:40,261 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 05:25:40,262 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 684 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:40,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 277 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 05:25:40,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48819 states. [2024-11-28 05:25:41,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48819 to 48819. [2024-11-28 05:25:41,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48819 states, 48818 states have (on average 1.131877586136261) internal successors, (55256), 48818 states have internal predecessors, (55256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48819 states to 48819 states and 55256 transitions. [2024-11-28 05:25:41,161 INFO L78 Accepts]: Start accepts. Automaton has 48819 states and 55256 transitions. Word has length 443 [2024-11-28 05:25:41,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:41,162 INFO L471 AbstractCegarLoop]: Abstraction has 48819 states and 55256 transitions. [2024-11-28 05:25:41,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:41,163 INFO L276 IsEmpty]: Start isEmpty. Operand 48819 states and 55256 transitions. [2024-11-28 05:25:41,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2024-11-28 05:25:41,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:41,175 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:41,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 05:25:41,176 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:41,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:41,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1371657392, now seen corresponding path program 1 times [2024-11-28 05:25:41,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:41,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978572046] [2024-11-28 05:25:41,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:41,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 423 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:25:44,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:44,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978572046] [2024-11-28 05:25:44,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978572046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:25:44,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754330536] [2024-11-28 05:25:44,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:44,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:44,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:44,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:44,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:25:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:44,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:25:44,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-28 05:25:45,420 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:45,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754330536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:45,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:25:45,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-28 05:25:45,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54647389] [2024-11-28 05:25:45,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:45,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:25:45,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:45,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:25:45,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:25:45,423 INFO L87 Difference]: Start difference. First operand 48819 states and 55256 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:53,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:53,010 INFO L93 Difference]: Finished difference Result 147955 states and 169736 transitions. [2024-11-28 05:25:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:25:53,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 484 [2024-11-28 05:25:53,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:53,121 INFO L225 Difference]: With dead ends: 147955 [2024-11-28 05:25:53,121 INFO L226 Difference]: Without dead ends: 99889 [2024-11-28 05:25:53,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:25:53,153 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 1762 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4868 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 5468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 4868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:53,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 69 Invalid, 5468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 4868 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-28 05:25:53,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99889 states. [2024-11-28 05:25:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99889 to 99136. [2024-11-28 05:25:54,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99136 states, 99135 states have (on average 1.143057446915822) internal successors, (113317), 99135 states have internal predecessors, (113317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:54,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99136 states to 99136 states and 113317 transitions. [2024-11-28 05:25:54,911 INFO L78 Accepts]: Start accepts. Automaton has 99136 states and 113317 transitions. Word has length 484 [2024-11-28 05:25:54,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:54,912 INFO L471 AbstractCegarLoop]: Abstraction has 99136 states and 113317 transitions. [2024-11-28 05:25:54,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:25:54,912 INFO L276 IsEmpty]: Start isEmpty. Operand 99136 states and 113317 transitions. [2024-11-28 05:25:54,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2024-11-28 05:25:54,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:54,935 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:54,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:55,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 05:25:55,137 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:55,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:55,138 INFO L85 PathProgramCache]: Analyzing trace with hash 105166052, now seen corresponding path program 1 times [2024-11-28 05:25:55,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:55,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845095354] [2024-11-28 05:25:55,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:55,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:56,785 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 414 proven. 108 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-28 05:25:56,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:56,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845095354] [2024-11-28 05:25:56,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845095354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:25:56,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374733152] [2024-11-28 05:25:56,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:56,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:56,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:56,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:56,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:25:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:57,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:25:57,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-11-28 05:25:57,292 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:57,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374733152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:57,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:25:57,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-28 05:25:57,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669792712] [2024-11-28 05:25:57,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:57,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:25:57,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:57,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:25:57,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:25:57,294 INFO L87 Difference]: Start difference. First operand 99136 states and 113317 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:26:02,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:02,632 INFO L93 Difference]: Finished difference Result 241077 states and 278927 transitions. [2024-11-28 05:26:02,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:26:02,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 530 [2024-11-28 05:26:02,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:02,772 INFO L225 Difference]: With dead ends: 241077 [2024-11-28 05:26:02,772 INFO L226 Difference]: Without dead ends: 142694 [2024-11-28 05:26:02,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:26:02,803 INFO L435 NwaCegarLoop]: 489 mSDtfsCounter, 694 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 2824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:02,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 495 Invalid, 2824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 05:26:02,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142694 states. [2024-11-28 05:26:04,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142694 to 137437. [2024-11-28 05:26:04,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137437 states, 137436 states have (on average 1.1303806862830699) internal successors, (155355), 137436 states have internal predecessors, (155355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:26:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137437 states to 137437 states and 155355 transitions. [2024-11-28 05:26:04,946 INFO L78 Accepts]: Start accepts. Automaton has 137437 states and 155355 transitions. Word has length 530 [2024-11-28 05:26:04,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:04,947 INFO L471 AbstractCegarLoop]: Abstraction has 137437 states and 155355 transitions. [2024-11-28 05:26:04,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:26:04,948 INFO L276 IsEmpty]: Start isEmpty. Operand 137437 states and 155355 transitions. [2024-11-28 05:26:04,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2024-11-28 05:26:04,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:04,992 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:05,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:26:05,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 05:26:05,193 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:26:05,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:05,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1688461461, now seen corresponding path program 1 times [2024-11-28 05:26:05,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:26:05,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87874949] [2024-11-28 05:26:05,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:05,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:26:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 828 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-28 05:26:06,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:26:06,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87874949] [2024-11-28 05:26:06,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87874949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:06,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:06,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:26:06,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584638206] [2024-11-28 05:26:06,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:06,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:26:06,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:26:06,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:26:06,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:26:06,203 INFO L87 Difference]: Start difference. First operand 137437 states and 155355 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:26:12,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:12,098 INFO L93 Difference]: Finished difference Result 274872 states and 310721 transitions. [2024-11-28 05:26:12,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:26:12,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 582 [2024-11-28 05:26:12,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:12,259 INFO L225 Difference]: With dead ends: 274872 [2024-11-28 05:26:12,259 INFO L226 Difference]: Without dead ends: 138188 [2024-11-28 05:26:12,296 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 05:26:12,296 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 735 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:12,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 227 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [632 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-28 05:26:12,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138188 states. [2024-11-28 05:26:13,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138188 to 135935. [2024-11-28 05:26:14,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135935 states, 135934 states have (on average 1.1257227772301264) internal successors, (153024), 135934 states have internal predecessors, (153024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:26:14,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135935 states to 135935 states and 153024 transitions. [2024-11-28 05:26:14,235 INFO L78 Accepts]: Start accepts. Automaton has 135935 states and 153024 transitions. Word has length 582 [2024-11-28 05:26:14,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:14,235 INFO L471 AbstractCegarLoop]: Abstraction has 135935 states and 153024 transitions. [2024-11-28 05:26:14,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:26:14,236 INFO L276 IsEmpty]: Start isEmpty. Operand 135935 states and 153024 transitions. [2024-11-28 05:26:14,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-28 05:26:14,252 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:14,252 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:14,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 05:26:14,253 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:26:14,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:14,254 INFO L85 PathProgramCache]: Analyzing trace with hash 341598571, now seen corresponding path program 1 times [2024-11-28 05:26:14,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:26:14,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962365031] [2024-11-28 05:26:14,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:14,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:26:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:14,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1119 backedges. 844 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-28 05:26:14,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:26:14,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962365031] [2024-11-28 05:26:14,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962365031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:14,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:14,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:26:14,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111255528] [2024-11-28 05:26:14,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:14,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:26:14,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:26:14,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:26:14,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:26:14,935 INFO L87 Difference]: Start difference. First operand 135935 states and 153024 transitions. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:26:21,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:21,047 INFO L93 Difference]: Finished difference Result 380763 states and 429237 transitions. [2024-11-28 05:26:21,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:26:21,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 593 [2024-11-28 05:26:21,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:21,304 INFO L225 Difference]: With dead ends: 380763 [2024-11-28 05:26:21,304 INFO L226 Difference]: Without dead ends: 245581 [2024-11-28 05:26:21,351 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 05:26:21,352 INFO L435 NwaCegarLoop]: 510 mSDtfsCounter, 704 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:21,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 517 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 05:26:21,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245581 states. [2024-11-28 05:26:23,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245581 to 242577. [2024-11-28 05:26:24,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242577 states, 242576 states have (on average 1.1043920255919795) internal successors, (267899), 242576 states have internal predecessors, (267899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:26:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242577 states to 242577 states and 267899 transitions. [2024-11-28 05:26:24,658 INFO L78 Accepts]: Start accepts. Automaton has 242577 states and 267899 transitions. Word has length 593 [2024-11-28 05:26:24,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:24,658 INFO L471 AbstractCegarLoop]: Abstraction has 242577 states and 267899 transitions. [2024-11-28 05:26:24,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:26:24,659 INFO L276 IsEmpty]: Start isEmpty. Operand 242577 states and 267899 transitions. [2024-11-28 05:26:24,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2024-11-28 05:26:24,702 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:24,703 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:24,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 05:26:24,704 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:26:24,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:24,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1130398600, now seen corresponding path program 1 times [2024-11-28 05:26:24,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:26:24,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275510840] [2024-11-28 05:26:24,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:24,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:26:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 748 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2024-11-28 05:26:26,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:26:26,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275510840] [2024-11-28 05:26:26,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275510840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:26,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:26,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:26:26,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081313098] [2024-11-28 05:26:26,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:26,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:26:26,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:26:26,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:26:26,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:26:26,336 INFO L87 Difference]: Start difference. First operand 242577 states and 267899 transitions. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:26:32,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:32,976 INFO L93 Difference]: Finished difference Result 548236 states and 603361 transitions. [2024-11-28 05:26:32,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:26:32,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 737 [2024-11-28 05:26:32,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:33,320 INFO L225 Difference]: With dead ends: 548236 [2024-11-28 05:26:33,320 INFO L226 Difference]: Without dead ends: 306412 [2024-11-28 05:26:33,370 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 05:26:33,370 INFO L435 NwaCegarLoop]: 1342 mSDtfsCounter, 585 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:33,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 1350 Invalid, 2607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 05:26:33,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306412 states. [2024-11-28 05:26:37,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306412 to 298151. [2024-11-28 05:26:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298151 states, 298150 states have (on average 1.088817709206775) internal successors, (324631), 298150 states have internal predecessors, (324631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:26:37,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298151 states to 298151 states and 324631 transitions. [2024-11-28 05:26:37,809 INFO L78 Accepts]: Start accepts. Automaton has 298151 states and 324631 transitions. Word has length 737 [2024-11-28 05:26:37,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:37,810 INFO L471 AbstractCegarLoop]: Abstraction has 298151 states and 324631 transitions. [2024-11-28 05:26:37,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:26:37,811 INFO L276 IsEmpty]: Start isEmpty. Operand 298151 states and 324631 transitions. [2024-11-28 05:26:37,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2024-11-28 05:26:37,885 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:37,886 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:37,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:26:37,886 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:26:37,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:37,892 INFO L85 PathProgramCache]: Analyzing trace with hash -639411, now seen corresponding path program 1 times [2024-11-28 05:26:37,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:26:37,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921236712] [2024-11-28 05:26:37,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:37,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:26:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1687 backedges. 1151 proven. 0 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-11-28 05:26:39,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:26:39,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921236712] [2024-11-28 05:26:39,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921236712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:39,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:39,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:26:39,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586324097] [2024-11-28 05:26:39,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:39,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:26:39,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:26:39,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:26:39,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:26:39,558 INFO L87 Difference]: Start difference. First operand 298151 states and 324631 transitions. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:26:47,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:47,109 INFO L93 Difference]: Finished difference Result 673653 states and 737723 transitions. [2024-11-28 05:26:47,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:26:47,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 754 [2024-11-28 05:26:47,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:47,526 INFO L225 Difference]: With dead ends: 673653 [2024-11-28 05:26:47,526 INFO L226 Difference]: Without dead ends: 376255 [2024-11-28 05:26:47,590 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 05:26:47,591 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 669 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:47,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 474 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-28 05:26:47,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376255 states. [2024-11-28 05:26:52,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376255 to 373251. [2024-11-28 05:26:52,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373251 states, 373250 states have (on average 1.0941942397856665) internal successors, (408408), 373250 states have internal predecessors, (408408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:26:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373251 states to 373251 states and 408408 transitions. [2024-11-28 05:26:54,260 INFO L78 Accepts]: Start accepts. Automaton has 373251 states and 408408 transitions. Word has length 754 [2024-11-28 05:26:54,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:54,261 INFO L471 AbstractCegarLoop]: Abstraction has 373251 states and 408408 transitions. [2024-11-28 05:26:54,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:26:54,261 INFO L276 IsEmpty]: Start isEmpty. Operand 373251 states and 408408 transitions. [2024-11-28 05:26:54,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2024-11-28 05:26:54,352 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:54,352 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:54,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 05:26:54,353 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:26:54,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:54,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1770685735, now seen corresponding path program 1 times [2024-11-28 05:26:54,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:26:54,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908764248] [2024-11-28 05:26:54,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:54,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:26:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:55,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1744 backedges. 1052 proven. 322 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-11-28 05:26:55,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:26:55,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908764248] [2024-11-28 05:26:55,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908764248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:26:55,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868174555] [2024-11-28 05:26:55,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:55,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:55,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:55,230 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:55,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_130ab9be-6802-4be0-9e74-ced7f3a6d42d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:26:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:55,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:26:55,543 INFO L279 TraceCheckSpWp]: Computing forward predicates...