./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label21.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_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/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_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label21.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/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_b6eed030-ca0e-4a66-8201-bc4a5288ff43/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 cddd396d9051dbeeab842f0229e49128c7a3af364245c973ac8bbf7d2e9e624d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:58:15,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:58:15,724 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:58:15,736 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:58:15,737 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:58:15,774 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:58:15,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:58:15,775 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:58:15,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:58:15,776 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:58:15,777 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:58:15,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:58:15,778 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:58:15,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:58:15,778 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:58:15,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:58:15,778 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:58:15,779 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:58:15,779 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:58:15,779 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:58:15,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:58:15,780 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:58:15,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:58:15,780 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:58:15,780 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:58:15,780 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:58:15,780 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:58:15,781 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:58:15,781 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:58:15,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:58:15,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:58:15,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:58:15,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:58:15,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:58:15,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:58:15,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:58:15,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:58:15,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:58:15,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:58:15,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:58:15,782 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:58:15,782 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:58:15,782 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:58:15,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:58:15,782 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:58:15,782 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:58:15,783 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:58:15,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:58:15,784 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_b6eed030-ca0e-4a66-8201-bc4a5288ff43/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 -> cddd396d9051dbeeab842f0229e49128c7a3af364245c973ac8bbf7d2e9e624d [2024-11-28 02:58:16,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:58:16,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:58:16,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:58:16,100 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:58:16,100 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:58:16,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem03_label21.c [2024-11-28 02:58:18,942 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/data/bd7943859/04385832e8ba4a3eb77257d5e7a44c4d/FLAG158bd32b9 [2024-11-28 02:58:19,413 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:58:19,414 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/sv-benchmarks/c/eca-rers2012/Problem03_label21.c [2024-11-28 02:58:19,435 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/data/bd7943859/04385832e8ba4a3eb77257d5e7a44c4d/FLAG158bd32b9 [2024-11-28 02:58:19,458 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/data/bd7943859/04385832e8ba4a3eb77257d5e7a44c4d [2024-11-28 02:58:19,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:58:19,462 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:58:19,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:58:19,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:58:19,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:58:19,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:19" (1/1) ... [2024-11-28 02:58:19,472 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e09290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19, skipping insertion in model container [2024-11-28 02:58:19,473 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:19" (1/1) ... [2024-11-28 02:58:19,556 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:58:20,118 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_b6eed030-ca0e-4a66-8201-bc4a5288ff43/sv-benchmarks/c/eca-rers2012/Problem03_label21.c[61500,61513] [2024-11-28 02:58:20,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:58:20,170 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:58:20,435 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_b6eed030-ca0e-4a66-8201-bc4a5288ff43/sv-benchmarks/c/eca-rers2012/Problem03_label21.c[61500,61513] [2024-11-28 02:58:20,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:58:20,509 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:58:20,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:20 WrapperNode [2024-11-28 02:58:20,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:58:20,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:58:20,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:58:20,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:58:20,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:20" (1/1) ... [2024-11-28 02:58:20,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:20" (1/1) ... [2024-11-28 02:58:20,635 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-28 02:58:20,635 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:58:20,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:58:20,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:58:20,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:58:20,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:20" (1/1) ... [2024-11-28 02:58:20,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:20" (1/1) ... [2024-11-28 02:58:20,655 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:20" (1/1) ... [2024-11-28 02:58:20,686 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 02:58:20,687 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:20" (1/1) ... [2024-11-28 02:58:20,687 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:20" (1/1) ... [2024-11-28 02:58:20,731 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:20" (1/1) ... [2024-11-28 02:58:20,737 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:20" (1/1) ... [2024-11-28 02:58:20,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:20" (1/1) ... [2024-11-28 02:58:20,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:20" (1/1) ... [2024-11-28 02:58:20,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:20" (1/1) ... [2024-11-28 02:58:20,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:58:20,805 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:58:20,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:58:20,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:58:20,806 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:20" (1/1) ... [2024-11-28 02:58:20,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:58:20,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:20,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:58:20,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:58:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:58:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:58:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:58:20,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:58:20,976 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:58:20,978 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:58:23,396 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-28 02:58:23,397 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:58:23,421 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:58:23,424 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:58:23,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:23 BoogieIcfgContainer [2024-11-28 02:58:23,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:58:23,427 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:58:23,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:58:23,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:58:23,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:19" (1/3) ... [2024-11-28 02:58:23,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b25fa84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:23, skipping insertion in model container [2024-11-28 02:58:23,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:20" (2/3) ... [2024-11-28 02:58:23,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b25fa84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:23, skipping insertion in model container [2024-11-28 02:58:23,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:23" (3/3) ... [2024-11-28 02:58:23,437 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem03_label21.c [2024-11-28 02:58:23,454 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:58:23,458 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem03_label21.c that has 1 procedures, 302 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:58:23,537 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:58:23,553 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;@168c5cab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:58:23,555 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:58:23,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:23,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-28 02:58:23,584 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:23,585 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:58:23,585 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:23,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:23,591 INFO L85 PathProgramCache]: Analyzing trace with hash 759114634, now seen corresponding path program 1 times [2024-11-28 02:58:23,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:23,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811141768] [2024-11-28 02:58:23,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:23,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:24,925 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 02:58:24,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:24,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811141768] [2024-11-28 02:58:24,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811141768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:24,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:24,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:58:24,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063015201] [2024-11-28 02:58:24,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:24,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:58:24,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:24,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:58:24,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:58:24,970 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:26,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:26,412 INFO L93 Difference]: Finished difference Result 857 states and 1498 transitions. [2024-11-28 02:58:26,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:58:26,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2024-11-28 02:58:26,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:26,431 INFO L225 Difference]: With dead ends: 857 [2024-11-28 02:58:26,432 INFO L226 Difference]: Without dead ends: 462 [2024-11-28 02:58:26,435 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 02:58:26,441 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 86 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:26,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 187 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:58:26,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-28 02:58:26,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2024-11-28 02:58:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.5381263616557734) internal successors, (706), 459 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:26,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 706 transitions. [2024-11-28 02:58:26,520 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 706 transitions. Word has length 202 [2024-11-28 02:58:26,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:26,521 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 706 transitions. [2024-11-28 02:58:26,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:26,524 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 706 transitions. [2024-11-28 02:58:26,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-28 02:58:26,532 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:26,532 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:26,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:58:26,533 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:26,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:26,534 INFO L85 PathProgramCache]: Analyzing trace with hash -473411991, now seen corresponding path program 1 times [2024-11-28 02:58:26,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:26,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929810261] [2024-11-28 02:58:26,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:26,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:26,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:26,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:26,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929810261] [2024-11-28 02:58:26,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929810261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:26,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:26,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:58:26,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984708861] [2024-11-28 02:58:26,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:26,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:58:26,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:26,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:58:26,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:58:26,820 INFO L87 Difference]: Start difference. First operand 460 states and 706 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:27,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:27,957 INFO L93 Difference]: Finished difference Result 1344 states and 2079 transitions. [2024-11-28 02:58:27,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:58:27,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2024-11-28 02:58:27,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:27,962 INFO L225 Difference]: With dead ends: 1344 [2024-11-28 02:58:27,962 INFO L226 Difference]: Without dead ends: 886 [2024-11-28 02:58:27,964 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 02:58:27,965 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:27,965 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 92 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:58:27,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-28 02:58:27,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 870. [2024-11-28 02:58:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5120828538550057) internal successors, (1314), 869 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states 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 02:58:27,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1314 transitions. [2024-11-28 02:58:28,000 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1314 transitions. Word has length 210 [2024-11-28 02:58:28,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:28,000 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 1314 transitions. [2024-11-28 02:58:28,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:28,000 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1314 transitions. [2024-11-28 02:58:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-28 02:58:28,008 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:28,008 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:28,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:58:28,008 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:28,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:28,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1818915280, now seen corresponding path program 1 times [2024-11-28 02:58:28,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:28,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730487082] [2024-11-28 02:58:28,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:28,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:58:28,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:28,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730487082] [2024-11-28 02:58:28,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730487082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:28,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:28,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:58:28,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741906019] [2024-11-28 02:58:28,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:28,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:58:28,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:28,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:58:28,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:58:28,496 INFO L87 Difference]: Start difference. First operand 870 states and 1314 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 02:58:29,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:29,613 INFO L93 Difference]: Finished difference Result 2554 states and 3869 transitions. [2024-11-28 02:58:29,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:58:29,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2024-11-28 02:58:29,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:29,620 INFO L225 Difference]: With dead ends: 2554 [2024-11-28 02:58:29,620 INFO L226 Difference]: Without dead ends: 1686 [2024-11-28 02:58:29,622 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 02:58:29,622 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 233 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:29,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 416 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:58:29,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2024-11-28 02:58:29,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1684. [2024-11-28 02:58:29,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.3368983957219251) internal successors, (2250), 1683 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states 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 02:58:29,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2250 transitions. [2024-11-28 02:58:29,671 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2250 transitions. Word has length 222 [2024-11-28 02:58:29,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:29,672 INFO L471 AbstractCegarLoop]: Abstraction has 1684 states and 2250 transitions. [2024-11-28 02:58:29,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 02:58:29,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2250 transitions. [2024-11-28 02:58:29,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-28 02:58:29,677 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:29,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:58:29,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:58:29,678 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:29,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:29,679 INFO L85 PathProgramCache]: Analyzing trace with hash -111387987, now seen corresponding path program 1 times [2024-11-28 02:58:29,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:29,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402421798] [2024-11-28 02:58:29,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:29,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:29,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:29,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402421798] [2024-11-28 02:58:29,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402421798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:29,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:29,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:58:29,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666309049] [2024-11-28 02:58:29,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:29,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:58:29,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:29,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:58:29,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:58:29,963 INFO L87 Difference]: Start difference. First operand 1684 states and 2250 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 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 02:58:31,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:31,058 INFO L93 Difference]: Finished difference Result 5005 states and 6690 transitions. [2024-11-28 02:58:31,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:58:31,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 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 225 [2024-11-28 02:58:31,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:31,071 INFO L225 Difference]: With dead ends: 5005 [2024-11-28 02:58:31,071 INFO L226 Difference]: Without dead ends: 3323 [2024-11-28 02:58:31,074 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 02:58:31,077 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 241 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:31,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 174 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:58:31,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2024-11-28 02:58:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3320. [2024-11-28 02:58:31,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 3319 states have (on average 1.2853269056944863) internal successors, (4266), 3319 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states 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 02:58:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 4266 transitions. [2024-11-28 02:58:31,165 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 4266 transitions. Word has length 225 [2024-11-28 02:58:31,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:31,166 INFO L471 AbstractCegarLoop]: Abstraction has 3320 states and 4266 transitions. [2024-11-28 02:58:31,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 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 02:58:31,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 4266 transitions. [2024-11-28 02:58:31,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-28 02:58:31,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:31,175 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:58:31,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:58:31,176 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:31,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:31,177 INFO L85 PathProgramCache]: Analyzing trace with hash 288022904, now seen corresponding path program 1 times [2024-11-28 02:58:31,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:31,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386304924] [2024-11-28 02:58:31,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:31,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:58:31,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:31,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386304924] [2024-11-28 02:58:31,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386304924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:31,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:31,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:58:31,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467944761] [2024-11-28 02:58:31,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:31,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:58:31,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:31,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:58:31,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:58:31,647 INFO L87 Difference]: Start difference. First operand 3320 states and 4266 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:32,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:32,825 INFO L93 Difference]: Finished difference Result 9900 states and 12723 transitions. [2024-11-28 02:58:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:58:32,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2024-11-28 02:58:32,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:32,848 INFO L225 Difference]: With dead ends: 9900 [2024-11-28 02:58:32,849 INFO L226 Difference]: Without dead ends: 6582 [2024-11-28 02:58:32,853 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 02:58:32,855 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 202 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:32,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 418 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:58:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6582 states. [2024-11-28 02:58:33,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6582 to 6577. [2024-11-28 02:58:33,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6577 states, 6576 states have (on average 1.224756690997567) internal successors, (8054), 6576 states have internal predecessors, (8054), 0 states have call successors, (0), 0 states 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 02:58:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6577 states to 6577 states and 8054 transitions. [2024-11-28 02:58:33,049 INFO L78 Accepts]: Start accepts. Automaton has 6577 states and 8054 transitions. Word has length 237 [2024-11-28 02:58:33,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:33,050 INFO L471 AbstractCegarLoop]: Abstraction has 6577 states and 8054 transitions. [2024-11-28 02:58:33,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:33,050 INFO L276 IsEmpty]: Start isEmpty. Operand 6577 states and 8054 transitions. [2024-11-28 02:58:33,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-28 02:58:33,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:33,068 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:33,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:58:33,068 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:33,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:33,069 INFO L85 PathProgramCache]: Analyzing trace with hash 616574297, now seen corresponding path program 1 times [2024-11-28 02:58:33,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:33,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495368649] [2024-11-28 02:58:33,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:33,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:33,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:33,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495368649] [2024-11-28 02:58:33,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495368649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:33,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:33,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:58:33,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512152697] [2024-11-28 02:58:33,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:33,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:58:33,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:33,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:58:33,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:58:33,540 INFO L87 Difference]: Start difference. First operand 6577 states and 8054 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:34,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:34,629 INFO L93 Difference]: Finished difference Result 16215 states and 19826 transitions. [2024-11-28 02:58:34,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:58:34,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2024-11-28 02:58:34,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:34,659 INFO L225 Difference]: With dead ends: 16215 [2024-11-28 02:58:34,659 INFO L226 Difference]: Without dead ends: 9640 [2024-11-28 02:58:34,670 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 02:58:34,671 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 203 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:34,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 155 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:58:34,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9640 states. [2024-11-28 02:58:34,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9640 to 9638. [2024-11-28 02:58:34,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9638 states, 9637 states have (on average 1.2039016291376985) internal successors, (11602), 9637 states have internal predecessors, (11602), 0 states have call successors, (0), 0 states 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 02:58:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9638 states to 9638 states and 11602 transitions. [2024-11-28 02:58:34,955 INFO L78 Accepts]: Start accepts. Automaton has 9638 states and 11602 transitions. Word has length 243 [2024-11-28 02:58:34,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:34,955 INFO L471 AbstractCegarLoop]: Abstraction has 9638 states and 11602 transitions. [2024-11-28 02:58:34,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:34,956 INFO L276 IsEmpty]: Start isEmpty. Operand 9638 states and 11602 transitions. [2024-11-28 02:58:34,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-28 02:58:34,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:34,973 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:34,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:58:34,974 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:34,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:34,975 INFO L85 PathProgramCache]: Analyzing trace with hash 835456206, now seen corresponding path program 1 times [2024-11-28 02:58:34,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:34,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581890940] [2024-11-28 02:58:34,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:34,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:58:35,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:35,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581890940] [2024-11-28 02:58:35,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581890940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:35,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889327539] [2024-11-28 02:58:35,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:35,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:35,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:35,609 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:35,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:58:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:35,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:58:35,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:36,213 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:58:36,214 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:36,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889327539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:36,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:58:36,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-28 02:58:36,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291191101] [2024-11-28 02:58:36,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:36,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:58:36,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:36,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:58:36,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:36,217 INFO L87 Difference]: Start difference. First operand 9638 states and 11602 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:37,235 INFO L93 Difference]: Finished difference Result 19277 states and 23207 transitions. [2024-11-28 02:58:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:58:37,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2024-11-28 02:58:37,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:37,269 INFO L225 Difference]: With dead ends: 19277 [2024-11-28 02:58:37,269 INFO L226 Difference]: Without dead ends: 9641 [2024-11-28 02:58:37,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:37,280 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 76 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:37,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 98 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:58:37,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9641 states. [2024-11-28 02:58:37,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9641 to 9638. [2024-11-28 02:58:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9638 states, 9637 states have (on average 1.1977793919269482) internal successors, (11543), 9637 states have internal predecessors, (11543), 0 states have call successors, (0), 0 states 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 02:58:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9638 states to 9638 states and 11543 transitions. [2024-11-28 02:58:37,527 INFO L78 Accepts]: Start accepts. Automaton has 9638 states and 11543 transitions. Word has length 250 [2024-11-28 02:58:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:37,528 INFO L471 AbstractCegarLoop]: Abstraction has 9638 states and 11543 transitions. [2024-11-28 02:58:37,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 9638 states and 11543 transitions. [2024-11-28 02:58:37,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-28 02:58:37,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:37,554 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:37,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:58:37,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:58:37,759 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:37,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1077631683, now seen corresponding path program 1 times [2024-11-28 02:58:37,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:37,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475243552] [2024-11-28 02:58:37,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:37,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 92 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 02:58:38,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:38,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475243552] [2024-11-28 02:58:38,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475243552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:38,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628834173] [2024-11-28 02:58:38,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:38,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:38,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:38,403 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:38,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:58:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:38,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:58:38,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 02:58:39,008 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:39,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628834173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:39,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:58:39,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-28 02:58:39,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471465543] [2024-11-28 02:58:39,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:39,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:58:39,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:39,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:58:39,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:39,010 INFO L87 Difference]: Start difference. First operand 9638 states and 11543 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:40,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:40,049 INFO L93 Difference]: Finished difference Result 23771 states and 28789 transitions. [2024-11-28 02:58:40,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:58:40,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 283 [2024-11-28 02:58:40,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:40,086 INFO L225 Difference]: With dead ends: 23771 [2024-11-28 02:58:40,086 INFO L226 Difference]: Without dead ends: 14135 [2024-11-28 02:58:40,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:40,096 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 42 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:40,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 179 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:58:40,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14135 states. [2024-11-28 02:58:40,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14135 to 12486. [2024-11-28 02:58:40,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12486 states, 12485 states have (on average 1.2304365238285944) internal successors, (15362), 12485 states have internal predecessors, (15362), 0 states have call successors, (0), 0 states 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 02:58:40,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12486 states to 12486 states and 15362 transitions. [2024-11-28 02:58:40,384 INFO L78 Accepts]: Start accepts. Automaton has 12486 states and 15362 transitions. Word has length 283 [2024-11-28 02:58:40,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:40,385 INFO L471 AbstractCegarLoop]: Abstraction has 12486 states and 15362 transitions. [2024-11-28 02:58:40,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:40,385 INFO L276 IsEmpty]: Start isEmpty. Operand 12486 states and 15362 transitions. [2024-11-28 02:58:40,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-28 02:58:40,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:40,408 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:40,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:58:40,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 02:58:40,612 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:40,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:40,613 INFO L85 PathProgramCache]: Analyzing trace with hash -796027716, now seen corresponding path program 1 times [2024-11-28 02:58:40,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:40,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890807474] [2024-11-28 02:58:40,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:40,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 02:58:40,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:40,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890807474] [2024-11-28 02:58:40,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890807474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:40,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:40,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:58:40,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232937435] [2024-11-28 02:58:40,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:40,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:58:40,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:40,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:58:40,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:58:40,943 INFO L87 Difference]: Start difference. First operand 12486 states and 15362 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:42,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:42,093 INFO L93 Difference]: Finished difference Result 32541 states and 39906 transitions. [2024-11-28 02:58:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:58:42,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2024-11-28 02:58:42,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:42,132 INFO L225 Difference]: With dead ends: 32541 [2024-11-28 02:58:42,132 INFO L226 Difference]: Without dead ends: 20057 [2024-11-28 02:58:42,141 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 02:58:42,142 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 220 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:42,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 172 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:58:42,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20057 states. [2024-11-28 02:58:42,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20057 to 20054. [2024-11-28 02:58:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20054 states, 20053 states have (on average 1.220166558619658) internal successors, (24468), 20053 states have internal predecessors, (24468), 0 states have call successors, (0), 0 states 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 02:58:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20054 states to 20054 states and 24468 transitions. [2024-11-28 02:58:42,444 INFO L78 Accepts]: Start accepts. Automaton has 20054 states and 24468 transitions. Word has length 304 [2024-11-28 02:58:42,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:42,444 INFO L471 AbstractCegarLoop]: Abstraction has 20054 states and 24468 transitions. [2024-11-28 02:58:42,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:58:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 20054 states and 24468 transitions. [2024-11-28 02:58:42,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-28 02:58:42,480 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:42,480 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:42,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:58:42,482 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:42,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:42,483 INFO L85 PathProgramCache]: Analyzing trace with hash -752412313, now seen corresponding path program 1 times [2024-11-28 02:58:42,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:42,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118622915] [2024-11-28 02:58:42,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:42,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 02:58:42,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:42,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118622915] [2024-11-28 02:58:42,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118622915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:42,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530188821] [2024-11-28 02:58:42,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:42,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:42,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:42,997 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:43,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:58:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:43,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:58:43,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:58:43,373 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:58:43,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530188821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:43,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:58:43,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-28 02:58:43,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362423915] [2024-11-28 02:58:43,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:43,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:58:43,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:43,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:58:43,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:43,376 INFO L87 Difference]: Start difference. First operand 20054 states and 24468 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 02:58:44,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:44,366 INFO L93 Difference]: Finished difference Result 39082 states and 47475 transitions. [2024-11-28 02:58:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:58:44,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 311 [2024-11-28 02:58:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:44,406 INFO L225 Difference]: With dead ends: 39082 [2024-11-28 02:58:44,406 INFO L226 Difference]: Without dead ends: 19030 [2024-11-28 02:58:44,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:58:44,419 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 204 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:44,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 377 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:58:44,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19030 states. [2024-11-28 02:58:44,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19030 to 17806. [2024-11-28 02:58:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17806 states, 17805 states have (on average 1.1693906206121876) internal successors, (20821), 17805 states have internal predecessors, (20821), 0 states have call successors, (0), 0 states 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 02:58:44,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17806 states to 17806 states and 20821 transitions. [2024-11-28 02:58:44,730 INFO L78 Accepts]: Start accepts. Automaton has 17806 states and 20821 transitions. Word has length 311 [2024-11-28 02:58:44,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:44,731 INFO L471 AbstractCegarLoop]: Abstraction has 17806 states and 20821 transitions. [2024-11-28 02:58:44,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 02:58:44,731 INFO L276 IsEmpty]: Start isEmpty. Operand 17806 states and 20821 transitions. [2024-11-28 02:58:44,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-28 02:58:44,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:44,766 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:58:44,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:58:44,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:58:44,967 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:44,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:44,968 INFO L85 PathProgramCache]: Analyzing trace with hash -478651103, now seen corresponding path program 1 times [2024-11-28 02:58:44,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:44,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841766397] [2024-11-28 02:58:44,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:44,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 87 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 02:58:45,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:45,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841766397] [2024-11-28 02:58:45,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841766397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:45,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527578895] [2024-11-28 02:58:45,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:45,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:45,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:45,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:45,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:58:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:45,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:58:45,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 139 proven. 41 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:58:45,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:58:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 139 proven. 41 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:58:46,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527578895] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:58:46,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:58:46,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 6 [2024-11-28 02:58:46,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621881239] [2024-11-28 02:58:46,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:58:46,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:58:46,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:46,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:58:46,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:58:46,132 INFO L87 Difference]: Start difference. First operand 17806 states and 20821 transitions. Second operand has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 02:58:52,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:52,997 INFO L93 Difference]: Finished difference Result 136353 states and 162286 transitions. [2024-11-28 02:58:52,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:58:52,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 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 324 [2024-11-28 02:58:52,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:53,265 INFO L225 Difference]: With dead ends: 136353 [2024-11-28 02:58:53,265 INFO L226 Difference]: Without dead ends: 118549 [2024-11-28 02:58:53,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:58:53,285 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 2557 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 5690 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2557 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 6275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 5690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:53,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2557 Valid, 748 Invalid, 6275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 5690 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-28 02:58:53,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118549 states. [2024-11-28 02:58:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118549 to 84902. [2024-11-28 02:58:54,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84902 states, 84901 states have (on average 1.134674503244956) internal successors, (96335), 84901 states have internal predecessors, (96335), 0 states have call successors, (0), 0 states 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 02:58:54,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84902 states to 84902 states and 96335 transitions. [2024-11-28 02:58:54,568 INFO L78 Accepts]: Start accepts. Automaton has 84902 states and 96335 transitions. Word has length 324 [2024-11-28 02:58:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:54,569 INFO L471 AbstractCegarLoop]: Abstraction has 84902 states and 96335 transitions. [2024-11-28 02:58:54,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 02:58:54,570 INFO L276 IsEmpty]: Start isEmpty. Operand 84902 states and 96335 transitions. [2024-11-28 02:58:54,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-28 02:58:54,645 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:54,645 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:58:54,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:58:54,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:54,850 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:54,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:54,850 INFO L85 PathProgramCache]: Analyzing trace with hash 510690382, now seen corresponding path program 1 times [2024-11-28 02:58:54,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:54,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972377449] [2024-11-28 02:58:54,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:54,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 93 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 02:58:55,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:55,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972377449] [2024-11-28 02:58:55,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972377449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:55,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639505057] [2024-11-28 02:58:55,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:55,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:55,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:55,630 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:55,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:58:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:55,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:58:55,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:58:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 180 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:58:55,966 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:58:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 180 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:58:56,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639505057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:58:56,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:58:56,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 6 [2024-11-28 02:58:56,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078614022] [2024-11-28 02:58:56,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:58:56,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:58:56,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:56,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:58:56,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:58:56,094 INFO L87 Difference]: Start difference. First operand 84902 states and 96335 transitions. Second operand has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 02:59:01,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:01,746 INFO L93 Difference]: Finished difference Result 296362 states and 336491 transitions. [2024-11-28 02:59:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:59:01,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 0 states have call successors, (0), 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 327 [2024-11-28 02:59:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:02,097 INFO L225 Difference]: With dead ends: 296362 [2024-11-28 02:59:02,097 INFO L226 Difference]: Without dead ends: 211448 [2024-11-28 02:59:02,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:59:02,157 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 3206 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 4260 mSolverCounterSat, 832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3206 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 5092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 4260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:59:02,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3206 Valid, 440 Invalid, 5092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [832 Valid, 4260 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 02:59:02,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211448 states. [2024-11-28 02:59:04,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211448 to 204018. [2024-11-28 02:59:04,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204018 states, 204017 states have (on average 1.0932863437850768) internal successors, (223049), 204017 states have internal predecessors, (223049), 0 states have call successors, (0), 0 states 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 02:59:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204018 states to 204018 states and 223049 transitions. [2024-11-28 02:59:05,567 INFO L78 Accepts]: Start accepts. Automaton has 204018 states and 223049 transitions. Word has length 327 [2024-11-28 02:59:05,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:59:05,567 INFO L471 AbstractCegarLoop]: Abstraction has 204018 states and 223049 transitions. [2024-11-28 02:59:05,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 02:59:05,568 INFO L276 IsEmpty]: Start isEmpty. Operand 204018 states and 223049 transitions. [2024-11-28 02:59:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-11-28 02:59:05,696 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:05,697 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:59:05,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:59:05,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:05,897 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:59:05,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:05,898 INFO L85 PathProgramCache]: Analyzing trace with hash -97136157, now seen corresponding path program 1 times [2024-11-28 02:59:05,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:05,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405469175] [2024-11-28 02:59:05,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:05,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:06,460 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-28 02:59:06,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:06,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405469175] [2024-11-28 02:59:06,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405469175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:06,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:06,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:59:06,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291971740] [2024-11-28 02:59:06,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:06,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:59:06,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:06,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:59:06,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:59:06,462 INFO L87 Difference]: Start difference. First operand 204018 states and 223049 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 02:59:08,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:08,685 INFO L93 Difference]: Finished difference Result 434477 states and 475541 transitions. [2024-11-28 02:59:08,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:59:08,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 372 [2024-11-28 02:59:08,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:09,031 INFO L225 Difference]: With dead ends: 434477 [2024-11-28 02:59:09,031 INFO L226 Difference]: Without dead ends: 230461 [2024-11-28 02:59:09,158 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 02:59:09,158 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 156 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:59:09,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 184 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:59:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230461 states. [2024-11-28 02:59:11,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230461 to 212150. [2024-11-28 02:59:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212150 states, 212149 states have (on average 1.0892250258073335) internal successors, (231078), 212149 states have internal predecessors, (231078), 0 states have call successors, (0), 0 states 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 02:59:12,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212150 states to 212150 states and 231078 transitions. [2024-11-28 02:59:12,219 INFO L78 Accepts]: Start accepts. Automaton has 212150 states and 231078 transitions. Word has length 372 [2024-11-28 02:59:12,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:59:12,220 INFO L471 AbstractCegarLoop]: Abstraction has 212150 states and 231078 transitions. [2024-11-28 02:59:12,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 02:59:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 212150 states and 231078 transitions. [2024-11-28 02:59:12,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-28 02:59:12,381 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:12,381 INFO L218 NwaCegarLoop]: trace histogram [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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:59:12,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:59:12,381 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:59:12,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:12,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2002195184, now seen corresponding path program 1 times [2024-11-28 02:59:12,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:12,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053863629] [2024-11-28 02:59:12,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:12,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-28 02:59:13,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:13,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053863629] [2024-11-28 02:59:13,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053863629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:13,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:13,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:59:13,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190994379] [2024-11-28 02:59:13,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:13,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:59:13,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:13,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:59:13,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:59:13,165 INFO L87 Difference]: Start difference. First operand 212150 states and 231078 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:16,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:16,332 INFO L93 Difference]: Finished difference Result 612057 states and 665635 transitions. [2024-11-28 02:59:16,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:59:16,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2024-11-28 02:59:16,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:16,791 INFO L225 Difference]: With dead ends: 612057 [2024-11-28 02:59:16,791 INFO L226 Difference]: Without dead ends: 399909 [2024-11-28 02:59:16,837 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 02:59:16,838 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 798 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:59:16,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 399 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:59:17,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399909 states. [2024-11-28 02:59:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399909 to 399803. [2024-11-28 02:59:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399803 states, 399802 states have (on average 1.085594869460383) internal successors, (434023), 399802 states have internal predecessors, (434023), 0 states have call successors, (0), 0 states 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 02:59:23,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399803 states to 399803 states and 434023 transitions. [2024-11-28 02:59:23,155 INFO L78 Accepts]: Start accepts. Automaton has 399803 states and 434023 transitions. Word has length 377 [2024-11-28 02:59:23,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:59:23,155 INFO L471 AbstractCegarLoop]: Abstraction has 399803 states and 434023 transitions. [2024-11-28 02:59:23,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:59:23,155 INFO L276 IsEmpty]: Start isEmpty. Operand 399803 states and 434023 transitions. [2024-11-28 02:59:23,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-28 02:59:23,464 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:23,464 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:59:23,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:59:23,465 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:59:23,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:23,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1062832023, now seen corresponding path program 1 times [2024-11-28 02:59:23,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:23,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470908732] [2024-11-28 02:59:23,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:23,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 160 proven. 6 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-11-28 02:59:24,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:24,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470908732] [2024-11-28 02:59:24,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470908732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:59:24,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575796930] [2024-11-28 02:59:24,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:24,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:59:24,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:59:24,575 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:59:24,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6eed030-ca0e-4a66-8201-bc4a5288ff43/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:59:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:24,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:59:24,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:59:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-28 02:59:24,878 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:59:24,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575796930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:24,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:59:24,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-28 02:59:24,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687604702] [2024-11-28 02:59:24,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:24,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:59:24,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:24,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:59:24,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:59:24,880 INFO L87 Difference]: Start difference. First operand 399803 states and 434023 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 02:59:28,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:28,590 INFO L93 Difference]: Finished difference Result 877731 states and 956477 transitions. [2024-11-28 02:59:28,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:59:28,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 02:59:28,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:29,158 INFO L225 Difference]: With dead ends: 877731 [2024-11-28 02:59:29,158 INFO L226 Difference]: Without dead ends: 477930 [2024-11-28 02:59:29,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:59:29,288 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 222 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:59:29,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 165 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:59:29,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477930 states.