./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC --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 aa83d3f5173117ef698c13f0bcf19338ee3f6f59e63ac9b8ac7bd80f7d40c635 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:38:48,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:38:48,598 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:38:48,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:38:48,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:38:48,639 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:38:48,640 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:38:48,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:38:48,641 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:38:48,641 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:38:48,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:38:48,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:38:48,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:38:48,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:38:48,642 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:38:48,643 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:38:48,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:38:48,643 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:38:48,643 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:38:48,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:38:48,644 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:38:48,644 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:38:48,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:38:48,644 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:38:48,644 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:38:48,644 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:38:48,645 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:38:48,645 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:38:48,645 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:38:48,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:38:48,645 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:38:48,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:38:48,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:38:48,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:38:48,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:38:48,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:38:48,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:38:48,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:38:48,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:38:48,647 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:38:48,647 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:38:48,647 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:38:48,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:38:48,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:38:48,648 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:38:48,648 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:38:48,648 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:38:48,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:38:48,648 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_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC 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 -> aa83d3f5173117ef698c13f0bcf19338ee3f6f59e63ac9b8ac7bd80f7d40c635 [2024-11-23 23:38:49,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:38:49,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:38:49,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:38:49,059 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:38:49,060 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:38:49,061 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-23 23:38:52,748 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/data/e3a36e855/23001f5f27764e17997e07beeb51d58a/FLAG082fdf90f [2024-11-23 23:38:53,562 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:38:53,563 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-23 23:38:53,611 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/data/e3a36e855/23001f5f27764e17997e07beeb51d58a/FLAG082fdf90f [2024-11-23 23:38:53,646 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/data/e3a36e855/23001f5f27764e17997e07beeb51d58a [2024-11-23 23:38:53,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:38:53,653 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:38:53,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:38:53,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:38:53,664 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:38:53,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:38:53" (1/1) ... [2024-11-23 23:38:53,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488d5790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:53, skipping insertion in model container [2024-11-23 23:38:53,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:38:53" (1/1) ... [2024-11-23 23:38:53,840 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:38:54,393 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_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[8786,8799] [2024-11-23 23:38:54,483 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_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[14341,14354] [2024-11-23 23:38:55,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:38:55,675 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:38:55,746 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_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[8786,8799] [2024-11-23 23:38:55,768 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_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[14341,14354] [2024-11-23 23:38:56,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:38:56,493 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:38:56,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:56 WrapperNode [2024-11-23 23:38:56,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:38:56,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:38:56,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:38:56,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:38:56,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:56" (1/1) ... [2024-11-23 23:38:56,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:56" (1/1) ... [2024-11-23 23:38:57,082 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5035 [2024-11-23 23:38:57,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:38:57,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:38:57,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:38:57,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:38:57,096 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:56" (1/1) ... [2024-11-23 23:38:57,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:56" (1/1) ... [2024-11-23 23:38:57,183 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:56" (1/1) ... [2024-11-23 23:38:57,526 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]. [2024-11-23 23:38:57,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:56" (1/1) ... [2024-11-23 23:38:57,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:56" (1/1) ... [2024-11-23 23:38:57,712 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:56" (1/1) ... [2024-11-23 23:38:57,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:56" (1/1) ... [2024-11-23 23:38:57,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:56" (1/1) ... [2024-11-23 23:38:57,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:56" (1/1) ... [2024-11-23 23:38:57,831 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:56" (1/1) ... [2024-11-23 23:38:57,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:38:57,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:38:57,907 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:38:57,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:38:57,909 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:56" (1/1) ... [2024-11-23 23:38:57,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:38:57,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:38:57,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:38:57,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:38:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:38:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:38:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:38:58,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:38:58,166 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:38:58,169 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:39:06,556 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-11-23 23:39:06,556 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:39:06,628 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:39:06,628 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 23:39:06,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:39:06 BoogieIcfgContainer [2024-11-23 23:39:06,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:39:06,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:39:06,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:39:06,643 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:39:06,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:38:53" (1/3) ... [2024-11-23 23:39:06,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3465f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:39:06, skipping insertion in model container [2024-11-23 23:39:06,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:56" (2/3) ... [2024-11-23 23:39:06,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3465f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:39:06, skipping insertion in model container [2024-11-23 23:39:06,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:39:06" (3/3) ... [2024-11-23 23:39:06,647 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-23 23:39:06,668 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:39:06,673 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c that has 1 procedures, 885 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-23 23:39:06,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:39:06,842 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;@3a98a7da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:39:06,842 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 23:39:06,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:06,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-23 23:39:06,867 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:06,868 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] [2024-11-23 23:39:06,868 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:06,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:06,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1141430702, now seen corresponding path program 1 times [2024-11-23 23:39:06,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:06,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74108028] [2024-11-23 23:39:06,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:06,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:07,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:07,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:07,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74108028] [2024-11-23 23:39:07,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74108028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:07,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:07,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:39:07,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069754386] [2024-11-23 23:39:07,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:07,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:39:07,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:07,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:39:07,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:39:07,312 INFO L87 Difference]: Start difference. First operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:07,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:07,469 INFO L93 Difference]: Finished difference Result 1739 states and 3306 transitions. [2024-11-23 23:39:07,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:39:07,476 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-11-23 23:39:07,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:07,507 INFO L225 Difference]: With dead ends: 1739 [2024-11-23 23:39:07,510 INFO L226 Difference]: Without dead ends: 819 [2024-11-23 23:39:07,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:39:07,525 INFO L435 NwaCegarLoop]: 1612 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:07,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:39:07,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-11-23 23:39:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2024-11-23 23:39:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.894736842105263) internal successors, (1548), 818 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:07,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1548 transitions. [2024-11-23 23:39:07,659 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1548 transitions. Word has length 22 [2024-11-23 23:39:07,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:07,660 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1548 transitions. [2024-11-23 23:39:07,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1548 transitions. [2024-11-23 23:39:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-23 23:39:07,662 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:07,663 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] [2024-11-23 23:39:07,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:39:07,663 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:07,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:07,665 INFO L85 PathProgramCache]: Analyzing trace with hash 120362348, now seen corresponding path program 1 times [2024-11-23 23:39:07,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:07,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248936885] [2024-11-23 23:39:07,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:07,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:08,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:08,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248936885] [2024-11-23 23:39:08,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248936885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:08,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:08,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:39:08,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228579235] [2024-11-23 23:39:08,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:08,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:39:08,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:08,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:39:08,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:39:08,097 INFO L87 Difference]: Start difference. First operand 819 states and 1548 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:08,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:08,286 INFO L93 Difference]: Finished difference Result 859 states and 1609 transitions. [2024-11-23 23:39:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:39:08,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-11-23 23:39:08,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:08,293 INFO L225 Difference]: With dead ends: 859 [2024-11-23 23:39:08,293 INFO L226 Difference]: Without dead ends: 819 [2024-11-23 23:39:08,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:39:08,297 INFO L435 NwaCegarLoop]: 1546 mSDtfsCounter, 0 mSDsluCounter, 4610 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6156 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:08,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6156 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:39:08,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-11-23 23:39:08,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2024-11-23 23:39:08,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.8665850673194615) internal successors, (1525), 818 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:08,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1525 transitions. [2024-11-23 23:39:08,347 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1525 transitions. Word has length 22 [2024-11-23 23:39:08,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:08,347 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1525 transitions. [2024-11-23 23:39:08,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:08,348 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1525 transitions. [2024-11-23 23:39:08,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-23 23:39:08,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:08,349 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] [2024-11-23 23:39:08,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:39:08,350 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:08,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:08,350 INFO L85 PathProgramCache]: Analyzing trace with hash 550762215, now seen corresponding path program 1 times [2024-11-23 23:39:08,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:08,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303208105] [2024-11-23 23:39:08,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:08,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:08,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:08,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303208105] [2024-11-23 23:39:08,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303208105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:08,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:08,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:39:08,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738034066] [2024-11-23 23:39:08,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:08,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:39:08,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:08,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:39:08,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:39:08,765 INFO L87 Difference]: Start difference. First operand 819 states and 1525 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:09,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:09,148 INFO L93 Difference]: Finished difference Result 1107 states and 1981 transitions. [2024-11-23 23:39:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:39:09,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-11-23 23:39:09,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:09,156 INFO L225 Difference]: With dead ends: 1107 [2024-11-23 23:39:09,156 INFO L226 Difference]: Without dead ends: 1071 [2024-11-23 23:39:09,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:39:09,159 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 6262 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6262 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:09,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6262 Valid, 2187 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:39:09,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2024-11-23 23:39:09,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 853. [2024-11-23 23:39:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 851 states have (on average 1.8554641598119859) internal successors, (1579), 852 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:09,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1579 transitions. [2024-11-23 23:39:09,216 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1579 transitions. Word has length 44 [2024-11-23 23:39:09,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:09,216 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1579 transitions. [2024-11-23 23:39:09,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:09,217 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1579 transitions. [2024-11-23 23:39:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-23 23:39:09,222 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:09,222 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] [2024-11-23 23:39:09,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:39:09,223 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:09,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:09,226 INFO L85 PathProgramCache]: Analyzing trace with hash -414187945, now seen corresponding path program 1 times [2024-11-23 23:39:09,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:09,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377485572] [2024-11-23 23:39:09,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:09,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:09,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:09,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:09,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377485572] [2024-11-23 23:39:09,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377485572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:09,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:09,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:09,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944249031] [2024-11-23 23:39:09,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:09,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:09,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:09,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:09,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:09,467 INFO L87 Difference]: Start difference. First operand 853 states and 1579 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:09,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:09,539 INFO L93 Difference]: Finished difference Result 982 states and 1782 transitions. [2024-11-23 23:39:09,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:09,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2024-11-23 23:39:09,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:09,546 INFO L225 Difference]: With dead ends: 982 [2024-11-23 23:39:09,546 INFO L226 Difference]: Without dead ends: 912 [2024-11-23 23:39:09,547 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 [2024-11-23 23:39:09,548 INFO L435 NwaCegarLoop]: 1523 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:09,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1575 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:39:09,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-11-23 23:39:09,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2024-11-23 23:39:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8359030837004404) internal successors, (1667), 909 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:09,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1667 transitions. [2024-11-23 23:39:09,613 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1667 transitions. Word has length 46 [2024-11-23 23:39:09,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:09,613 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1667 transitions. [2024-11-23 23:39:09,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:09,614 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1667 transitions. [2024-11-23 23:39:09,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-23 23:39:09,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:09,621 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] [2024-11-23 23:39:09,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:39:09,621 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:09,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:09,622 INFO L85 PathProgramCache]: Analyzing trace with hash -347694433, now seen corresponding path program 1 times [2024-11-23 23:39:09,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:09,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956352230] [2024-11-23 23:39:09,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:09,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:10,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:10,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956352230] [2024-11-23 23:39:10,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956352230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:10,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:10,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:39:10,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547873009] [2024-11-23 23:39:10,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:10,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:39:10,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:10,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:39:10,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:39:10,166 INFO L87 Difference]: Start difference. First operand 910 states and 1667 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:10,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:10,387 INFO L93 Difference]: Finished difference Result 1039 states and 1867 transitions. [2024-11-23 23:39:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:39:10,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2024-11-23 23:39:10,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:10,394 INFO L225 Difference]: With dead ends: 1039 [2024-11-23 23:39:10,394 INFO L226 Difference]: Without dead ends: 912 [2024-11-23 23:39:10,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:39:10,396 INFO L435 NwaCegarLoop]: 1519 mSDtfsCounter, 5924 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5924 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:10,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5924 Valid, 1678 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:39:10,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-11-23 23:39:10,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2024-11-23 23:39:10,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8337004405286343) internal successors, (1665), 909 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:10,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1665 transitions. [2024-11-23 23:39:10,434 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1665 transitions. Word has length 46 [2024-11-23 23:39:10,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:10,435 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1665 transitions. [2024-11-23 23:39:10,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1665 transitions. [2024-11-23 23:39:10,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-23 23:39:10,436 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:10,437 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] [2024-11-23 23:39:10,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:39:10,437 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:10,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:10,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1691651312, now seen corresponding path program 1 times [2024-11-23 23:39:10,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:10,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079148981] [2024-11-23 23:39:10,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:10,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:10,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:10,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:10,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079148981] [2024-11-23 23:39:10,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079148981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:10,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:10,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:39:10,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252953244] [2024-11-23 23:39:10,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:10,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:39:10,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:10,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:39:10,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:39:10,767 INFO L87 Difference]: Start difference. First operand 910 states and 1665 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:10,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:10,850 INFO L93 Difference]: Finished difference Result 918 states and 1674 transitions. [2024-11-23 23:39:10,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:39:10,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-11-23 23:39:10,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:10,861 INFO L225 Difference]: With dead ends: 918 [2024-11-23 23:39:10,862 INFO L226 Difference]: Without dead ends: 916 [2024-11-23 23:39:10,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:39:10,865 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 0 mSDsluCounter, 4557 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:10,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:39:10,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-23 23:39:10,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 916. [2024-11-23 23:39:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8271334792122538) internal successors, (1670), 915 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:10,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1670 transitions. [2024-11-23 23:39:10,908 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1670 transitions. Word has length 47 [2024-11-23 23:39:10,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:10,910 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1670 transitions. [2024-11-23 23:39:10,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1670 transitions. [2024-11-23 23:39:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-23 23:39:10,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:10,912 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] [2024-11-23 23:39:10,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:39:10,913 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:10,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:10,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1538886047, now seen corresponding path program 1 times [2024-11-23 23:39:10,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:10,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141975324] [2024-11-23 23:39:10,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:10,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:11,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:11,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141975324] [2024-11-23 23:39:11,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141975324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:11,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:11,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:11,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057343922] [2024-11-23 23:39:11,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:11,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:11,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:11,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:11,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:11,064 INFO L87 Difference]: Start difference. First operand 916 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:11,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:11,129 INFO L93 Difference]: Finished difference Result 1062 states and 1891 transitions. [2024-11-23 23:39:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:11,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-23 23:39:11,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:11,135 INFO L225 Difference]: With dead ends: 1062 [2024-11-23 23:39:11,136 INFO L226 Difference]: Without dead ends: 986 [2024-11-23 23:39:11,137 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 [2024-11-23 23:39:11,138 INFO L435 NwaCegarLoop]: 1567 mSDtfsCounter, 1486 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:11,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:39:11,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-11-23 23:39:11,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 984. [2024-11-23 23:39:11,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.8034623217922607) internal successors, (1771), 983 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1771 transitions. [2024-11-23 23:39:11,180 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1771 transitions. Word has length 48 [2024-11-23 23:39:11,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:11,181 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1771 transitions. [2024-11-23 23:39:11,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:11,181 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1771 transitions. [2024-11-23 23:39:11,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-23 23:39:11,183 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:11,183 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] [2024-11-23 23:39:11,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:39:11,183 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:11,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:11,184 INFO L85 PathProgramCache]: Analyzing trace with hash 561679263, now seen corresponding path program 1 times [2024-11-23 23:39:11,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:11,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534453938] [2024-11-23 23:39:11,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:11,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:11,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:11,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534453938] [2024-11-23 23:39:11,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534453938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:11,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:11,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:11,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977073360] [2024-11-23 23:39:11,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:11,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:11,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:11,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:11,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:11,294 INFO L87 Difference]: Start difference. First operand 984 states and 1771 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:11,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:11,347 INFO L93 Difference]: Finished difference Result 1358 states and 2331 transitions. [2024-11-23 23:39:11,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:11,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-23 23:39:11,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:11,355 INFO L225 Difference]: With dead ends: 1358 [2024-11-23 23:39:11,355 INFO L226 Difference]: Without dead ends: 1159 [2024-11-23 23:39:11,357 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 [2024-11-23 23:39:11,358 INFO L435 NwaCegarLoop]: 1559 mSDtfsCounter, 1482 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:11,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:39:11,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-23 23:39:11,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2024-11-23 23:39:11,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1155 states have (on average 1.7515151515151515) internal successors, (2023), 1156 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:11,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 2023 transitions. [2024-11-23 23:39:11,407 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 2023 transitions. Word has length 48 [2024-11-23 23:39:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:11,408 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 2023 transitions. [2024-11-23 23:39:11,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:11,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 2023 transitions. [2024-11-23 23:39:11,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-23 23:39:11,409 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:11,409 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] [2024-11-23 23:39:11,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:39:11,409 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:11,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:11,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1952355169, now seen corresponding path program 1 times [2024-11-23 23:39:11,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:11,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620524169] [2024-11-23 23:39:11,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:11,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:11,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:11,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620524169] [2024-11-23 23:39:11,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620524169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:11,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:11,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:11,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512109367] [2024-11-23 23:39:11,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:11,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:11,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:11,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:11,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:11,542 INFO L87 Difference]: Start difference. First operand 1157 states and 2023 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:11,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:11,609 INFO L93 Difference]: Finished difference Result 1853 states and 3045 transitions. [2024-11-23 23:39:11,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:11,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-23 23:39:11,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:11,622 INFO L225 Difference]: With dead ends: 1853 [2024-11-23 23:39:11,622 INFO L226 Difference]: Without dead ends: 1481 [2024-11-23 23:39:11,624 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 [2024-11-23 23:39:11,625 INFO L435 NwaCegarLoop]: 1557 mSDtfsCounter, 1480 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:11,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:39:11,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2024-11-23 23:39:11,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2024-11-23 23:39:11,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1477 states have (on average 1.6784021665538253) internal successors, (2479), 1478 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2479 transitions. [2024-11-23 23:39:11,688 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2479 transitions. Word has length 48 [2024-11-23 23:39:11,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:11,689 INFO L471 AbstractCegarLoop]: Abstraction has 1479 states and 2479 transitions. [2024-11-23 23:39:11,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:11,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2479 transitions. [2024-11-23 23:39:11,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-23 23:39:11,691 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:11,691 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] [2024-11-23 23:39:11,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:39:11,692 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:11,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1517819233, now seen corresponding path program 1 times [2024-11-23 23:39:11,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:11,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926992472] [2024-11-23 23:39:11,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:11,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:11,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:11,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926992472] [2024-11-23 23:39:11,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926992472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:11,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:11,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:11,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262223642] [2024-11-23 23:39:11,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:11,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:11,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:11,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:11,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:11,792 INFO L87 Difference]: Start difference. First operand 1479 states and 2479 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:11,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:11,870 INFO L93 Difference]: Finished difference Result 2771 states and 4329 transitions. [2024-11-23 23:39:11,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:11,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-23 23:39:11,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:11,882 INFO L225 Difference]: With dead ends: 2771 [2024-11-23 23:39:11,882 INFO L226 Difference]: Without dead ends: 2077 [2024-11-23 23:39:11,884 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 [2024-11-23 23:39:11,886 INFO L435 NwaCegarLoop]: 1569 mSDtfsCounter, 1484 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:11,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1631 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:39:11,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2024-11-23 23:39:11,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2075. [2024-11-23 23:39:11,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 2073 states have (on average 1.5894838398456343) internal successors, (3295), 2074 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 3295 transitions. [2024-11-23 23:39:11,985 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 3295 transitions. Word has length 48 [2024-11-23 23:39:11,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:11,986 INFO L471 AbstractCegarLoop]: Abstraction has 2075 states and 3295 transitions. [2024-11-23 23:39:11,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:11,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 3295 transitions. [2024-11-23 23:39:11,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-23 23:39:11,987 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:11,987 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] [2024-11-23 23:39:11,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:39:11,988 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:11,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:11,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1980038869, now seen corresponding path program 1 times [2024-11-23 23:39:11,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:11,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232791255] [2024-11-23 23:39:11,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:11,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:12,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:12,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232791255] [2024-11-23 23:39:12,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232791255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:12,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:12,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:39:12,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671552349] [2024-11-23 23:39:12,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:12,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:12,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:12,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:12,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:12,096 INFO L87 Difference]: Start difference. First operand 2075 states and 3295 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:18,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:18,677 INFO L93 Difference]: Finished difference Result 3579 states and 6168 transitions. [2024-11-23 23:39:18,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:18,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-23 23:39:18,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:18,693 INFO L225 Difference]: With dead ends: 3579 [2024-11-23 23:39:18,694 INFO L226 Difference]: Without dead ends: 2826 [2024-11-23 23:39:18,696 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 [2024-11-23 23:39:18,697 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 853 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:18,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 163 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-23 23:39:18,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2024-11-23 23:39:18,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2826. [2024-11-23 23:39:18,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2824 states have (on average 1.6536827195467423) internal successors, (4670), 2825 states have internal predecessors, (4670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:18,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 4670 transitions. [2024-11-23 23:39:18,800 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 4670 transitions. Word has length 48 [2024-11-23 23:39:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:18,801 INFO L471 AbstractCegarLoop]: Abstraction has 2826 states and 4670 transitions. [2024-11-23 23:39:18,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 4670 transitions. [2024-11-23 23:39:18,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-23 23:39:18,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:18,803 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:18,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:39:18,803 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:18,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:18,804 INFO L85 PathProgramCache]: Analyzing trace with hash 879514788, now seen corresponding path program 1 times [2024-11-23 23:39:18,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:18,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515560833] [2024-11-23 23:39:18,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:18,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:39:19,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:19,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515560833] [2024-11-23 23:39:19,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515560833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:19,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:19,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:39:19,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658048129] [2024-11-23 23:39:19,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:19,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:39:19,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:19,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:39:19,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:39:19,072 INFO L87 Difference]: Start difference. First operand 2826 states and 4670 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:19,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:19,355 INFO L93 Difference]: Finished difference Result 7916 states and 11859 transitions. [2024-11-23 23:39:19,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:39:19,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-23 23:39:19,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:19,390 INFO L225 Difference]: With dead ends: 7916 [2024-11-23 23:39:19,390 INFO L226 Difference]: Without dead ends: 6986 [2024-11-23 23:39:19,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:39:19,395 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 4645 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4645 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:19,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4645 Valid, 3320 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:39:19,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6986 states. [2024-11-23 23:39:19,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6986 to 3938. [2024-11-23 23:39:19,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3938 states, 3936 states have (on average 1.5807926829268293) internal successors, (6222), 3937 states have internal predecessors, (6222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 6222 transitions. [2024-11-23 23:39:19,605 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 6222 transitions. Word has length 65 [2024-11-23 23:39:19,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:19,605 INFO L471 AbstractCegarLoop]: Abstraction has 3938 states and 6222 transitions. [2024-11-23 23:39:19,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:19,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 6222 transitions. [2024-11-23 23:39:19,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-23 23:39:19,611 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:19,611 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:19,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:39:19,612 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:19,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:19,612 INFO L85 PathProgramCache]: Analyzing trace with hash -97691996, now seen corresponding path program 1 times [2024-11-23 23:39:19,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:19,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672114563] [2024-11-23 23:39:19,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:19,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:19,843 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:39:19,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:19,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672114563] [2024-11-23 23:39:19,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672114563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:19,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:19,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:39:19,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198315186] [2024-11-23 23:39:19,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:19,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:39:19,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:19,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:39:19,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:39:19,847 INFO L87 Difference]: Start difference. First operand 3938 states and 6222 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:20,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:20,135 INFO L93 Difference]: Finished difference Result 9204 states and 13667 transitions. [2024-11-23 23:39:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:39:20,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-23 23:39:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:20,187 INFO L225 Difference]: With dead ends: 9204 [2024-11-23 23:39:20,189 INFO L226 Difference]: Without dead ends: 7914 [2024-11-23 23:39:20,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:39:20,198 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 4683 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:20,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 3323 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:39:20,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7914 states. [2024-11-23 23:39:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7914 to 5690. [2024-11-23 23:39:20,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5690 states, 5688 states have (on average 1.5228551336146272) internal successors, (8662), 5689 states have internal predecessors, (8662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 8662 transitions. [2024-11-23 23:39:20,488 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 8662 transitions. Word has length 65 [2024-11-23 23:39:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:20,488 INFO L471 AbstractCegarLoop]: Abstraction has 5690 states and 8662 transitions. [2024-11-23 23:39:20,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:20,489 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 8662 transitions. [2024-11-23 23:39:20,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-23 23:39:20,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:20,491 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:20,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:39:20,492 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:20,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:20,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1683240868, now seen corresponding path program 1 times [2024-11-23 23:39:20,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:20,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883025377] [2024-11-23 23:39:20,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:20,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-23 23:39:20,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:20,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883025377] [2024-11-23 23:39:20,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883025377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:20,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:20,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:39:20,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162904569] [2024-11-23 23:39:20,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:20,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:39:20,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:20,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:39:20,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:39:20,715 INFO L87 Difference]: Start difference. First operand 5690 states and 8662 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:21,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:21,060 INFO L93 Difference]: Finished difference Result 10492 states and 15467 transitions. [2024-11-23 23:39:21,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:39:21,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-23 23:39:21,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:21,089 INFO L225 Difference]: With dead ends: 10492 [2024-11-23 23:39:21,090 INFO L226 Difference]: Without dead ends: 9202 [2024-11-23 23:39:21,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:39:21,096 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 4677 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:21,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4677 Valid, 3339 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:39:21,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9202 states. [2024-11-23 23:39:21,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9202 to 6978. [2024-11-23 23:39:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6978 states, 6976 states have (on average 1.4997133027522935) internal successors, (10462), 6977 states have internal predecessors, (10462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6978 states to 6978 states and 10462 transitions. [2024-11-23 23:39:21,539 INFO L78 Accepts]: Start accepts. Automaton has 6978 states and 10462 transitions. Word has length 65 [2024-11-23 23:39:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:21,539 INFO L471 AbstractCegarLoop]: Abstraction has 6978 states and 10462 transitions. [2024-11-23 23:39:21,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 6978 states and 10462 transitions. [2024-11-23 23:39:21,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-23 23:39:21,543 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:21,543 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:21,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:39:21,543 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:21,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:21,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2117776804, now seen corresponding path program 1 times [2024-11-23 23:39:21,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:21,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717291608] [2024-11-23 23:39:21,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:21,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:39:21,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:21,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717291608] [2024-11-23 23:39:21,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717291608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:21,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:21,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:39:21,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746840763] [2024-11-23 23:39:21,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:21,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:39:21,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:21,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:39:21,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:39:21,748 INFO L87 Difference]: Start difference. First operand 6978 states and 10462 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:22,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:22,145 INFO L93 Difference]: Finished difference Result 11780 states and 17267 transitions. [2024-11-23 23:39:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:39:22,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-23 23:39:22,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:22,178 INFO L225 Difference]: With dead ends: 11780 [2024-11-23 23:39:22,178 INFO L226 Difference]: Without dead ends: 10490 [2024-11-23 23:39:22,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:39:22,187 INFO L435 NwaCegarLoop]: 1573 mSDtfsCounter, 4647 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4647 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:22,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4647 Valid, 3375 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:39:22,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10490 states. [2024-11-23 23:39:22,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10490 to 8266. [2024-11-23 23:39:22,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8266 states, 8264 states have (on average 1.48378509196515) internal successors, (12262), 8265 states have internal predecessors, (12262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 12262 transitions. [2024-11-23 23:39:22,528 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 12262 transitions. Word has length 65 [2024-11-23 23:39:22,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:22,528 INFO L471 AbstractCegarLoop]: Abstraction has 8266 states and 12262 transitions. [2024-11-23 23:39:22,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:22,529 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 12262 transitions. [2024-11-23 23:39:22,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-23 23:39:22,531 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:22,531 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:39:22,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:39:22,532 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:22,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:22,532 INFO L85 PathProgramCache]: Analyzing trace with hash -999421060, now seen corresponding path program 1 times [2024-11-23 23:39:22,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:22,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323340520] [2024-11-23 23:39:22,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:22,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:22,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:22,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323340520] [2024-11-23 23:39:22,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323340520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:22,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:22,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:22,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197023922] [2024-11-23 23:39:22,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:22,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:22,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:22,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:22,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:22,686 INFO L87 Difference]: Start difference. First operand 8266 states and 12262 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:22,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:22,887 INFO L93 Difference]: Finished difference Result 14998 states and 21680 transitions. [2024-11-23 23:39:22,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:22,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-23 23:39:22,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:22,911 INFO L225 Difference]: With dead ends: 14998 [2024-11-23 23:39:22,912 INFO L226 Difference]: Without dead ends: 8268 [2024-11-23 23:39:22,922 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 [2024-11-23 23:39:22,923 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 37 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:22,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:39:22,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2024-11-23 23:39:23,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 8266. [2024-11-23 23:39:23,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8266 states, 8264 states have (on average 1.4687802516940949) internal successors, (12138), 8265 states have internal predecessors, (12138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 12138 transitions. [2024-11-23 23:39:23,206 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 12138 transitions. Word has length 66 [2024-11-23 23:39:23,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:23,207 INFO L471 AbstractCegarLoop]: Abstraction has 8266 states and 12138 transitions. [2024-11-23 23:39:23,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:23,207 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 12138 transitions. [2024-11-23 23:39:23,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 23:39:23,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:23,209 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:23,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:39:23,210 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:23,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:23,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1980195300, now seen corresponding path program 1 times [2024-11-23 23:39:23,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:23,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519869167] [2024-11-23 23:39:23,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:23,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:23,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:23,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519869167] [2024-11-23 23:39:23,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519869167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:23,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:23,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:23,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947775239] [2024-11-23 23:39:23,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:23,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:23,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:23,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:23,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:23,370 INFO L87 Difference]: Start difference. First operand 8266 states and 12138 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:23,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:23,565 INFO L93 Difference]: Finished difference Result 10839 states and 15722 transitions. [2024-11-23 23:39:23,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:23,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-23 23:39:23,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:23,581 INFO L225 Difference]: With dead ends: 10839 [2024-11-23 23:39:23,581 INFO L226 Difference]: Without dead ends: 4109 [2024-11-23 23:39:23,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:23,591 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 31 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:23,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3061 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:39:23,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2024-11-23 23:39:23,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4101. [2024-11-23 23:39:23,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 4099 states have (on average 1.5557453037326177) internal successors, (6377), 4100 states have internal predecessors, (6377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:23,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 6377 transitions. [2024-11-23 23:39:23,763 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 6377 transitions. Word has length 67 [2024-11-23 23:39:23,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:23,763 INFO L471 AbstractCegarLoop]: Abstraction has 4101 states and 6377 transitions. [2024-11-23 23:39:23,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:23,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 6377 transitions. [2024-11-23 23:39:23,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-23 23:39:23,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:23,766 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:23,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:39:23,766 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:23,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:23,767 INFO L85 PathProgramCache]: Analyzing trace with hash 823701102, now seen corresponding path program 1 times [2024-11-23 23:39:23,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:23,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649791848] [2024-11-23 23:39:23,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:23,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:23,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:23,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649791848] [2024-11-23 23:39:23,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649791848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:23,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:23,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:23,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185743004] [2024-11-23 23:39:23,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:23,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:23,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:23,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:23,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:23,966 INFO L87 Difference]: Start difference. First operand 4101 states and 6377 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:24,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:24,055 INFO L93 Difference]: Finished difference Result 5381 states and 8139 transitions. [2024-11-23 23:39:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:24,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-23 23:39:24,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:24,066 INFO L225 Difference]: With dead ends: 5381 [2024-11-23 23:39:24,066 INFO L226 Difference]: Without dead ends: 2827 [2024-11-23 23:39:24,070 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 [2024-11-23 23:39:24,071 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 33 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:24,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3040 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:39:24,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2024-11-23 23:39:24,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2825. [2024-11-23 23:39:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2823 states have (on average 1.6277010272759476) internal successors, (4595), 2824 states have internal predecessors, (4595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4595 transitions. [2024-11-23 23:39:24,184 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4595 transitions. Word has length 68 [2024-11-23 23:39:24,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:24,185 INFO L471 AbstractCegarLoop]: Abstraction has 2825 states and 4595 transitions. [2024-11-23 23:39:24,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:24,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4595 transitions. [2024-11-23 23:39:24,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-23 23:39:24,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:24,187 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:24,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:39:24,187 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:24,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash -447735840, now seen corresponding path program 1 times [2024-11-23 23:39:24,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:24,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106931274] [2024-11-23 23:39:24,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:24,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:24,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:24,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106931274] [2024-11-23 23:39:24,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106931274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:24,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:24,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:39:24,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545845299] [2024-11-23 23:39:24,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:24,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:24,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:24,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:24,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:24,375 INFO L87 Difference]: Start difference. First operand 2825 states and 4595 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:24,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:24,434 INFO L93 Difference]: Finished difference Result 3467 states and 5466 transitions. [2024-11-23 23:39:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:24,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-11-23 23:39:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:24,442 INFO L225 Difference]: With dead ends: 3467 [2024-11-23 23:39:24,442 INFO L226 Difference]: Without dead ends: 2189 [2024-11-23 23:39:24,444 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 [2024-11-23 23:39:24,445 INFO L435 NwaCegarLoop]: 1536 mSDtfsCounter, 30 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:24,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:39:24,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2024-11-23 23:39:24,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2187. [2024-11-23 23:39:24,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2185 states have (on average 1.700228832951945) internal successors, (3715), 2186 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:24,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3715 transitions. [2024-11-23 23:39:24,501 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3715 transitions. Word has length 70 [2024-11-23 23:39:24,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:24,501 INFO L471 AbstractCegarLoop]: Abstraction has 2187 states and 3715 transitions. [2024-11-23 23:39:24,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:24,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3715 transitions. [2024-11-23 23:39:24,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-23 23:39:24,503 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:24,503 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:39:24,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:39:24,504 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:24,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:24,504 INFO L85 PathProgramCache]: Analyzing trace with hash -164665390, now seen corresponding path program 1 times [2024-11-23 23:39:24,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:24,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465067035] [2024-11-23 23:39:24,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:24,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:27,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:27,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465067035] [2024-11-23 23:39:27,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465067035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:27,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062577278] [2024-11-23 23:39:27,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:27,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:27,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:27,101 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:27,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:39:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:27,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 23:39:27,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:27,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:28,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062577278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:28,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:28,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-11-23 23:39:28,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645184166] [2024-11-23 23:39:28,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:28,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:39:28,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:28,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:39:28,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:39:28,449 INFO L87 Difference]: Start difference. First operand 2187 states and 3715 transitions. Second operand has 22 states, 22 states have (on average 9.227272727272727) internal successors, (203), 22 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:38,158 INFO L93 Difference]: Finished difference Result 7868 states and 11156 transitions. [2024-11-23 23:39:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-23 23:39:38,159 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.227272727272727) internal successors, (203), 22 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-23 23:39:38,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:38,178 INFO L225 Difference]: With dead ends: 7868 [2024-11-23 23:39:38,179 INFO L226 Difference]: Without dead ends: 7154 [2024-11-23 23:39:38,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4129 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1855, Invalid=9487, Unknown=0, NotChecked=0, Total=11342 [2024-11-23 23:39:38,186 INFO L435 NwaCegarLoop]: 1519 mSDtfsCounter, 22922 mSDsluCounter, 7929 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22922 SdHoareTripleChecker+Valid, 9448 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:38,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22922 Valid, 9448 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-23 23:39:38,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7154 states. [2024-11-23 23:39:38,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7154 to 6482. [2024-11-23 23:39:38,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6482 states, 6480 states have (on average 1.4266975308641976) internal successors, (9245), 6481 states have internal predecessors, (9245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:38,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6482 states to 6482 states and 9245 transitions. [2024-11-23 23:39:38,451 INFO L78 Accepts]: Start accepts. Automaton has 6482 states and 9245 transitions. Word has length 72 [2024-11-23 23:39:38,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:38,451 INFO L471 AbstractCegarLoop]: Abstraction has 6482 states and 9245 transitions. [2024-11-23 23:39:38,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.227272727272727) internal successors, (203), 22 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:38,452 INFO L276 IsEmpty]: Start isEmpty. Operand 6482 states and 9245 transitions. [2024-11-23 23:39:38,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-23 23:39:38,454 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:38,455 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:39:38,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:39:38,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:38,657 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:38,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:38,658 INFO L85 PathProgramCache]: Analyzing trace with hash -370729224, now seen corresponding path program 1 times [2024-11-23 23:39:38,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:38,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115646495] [2024-11-23 23:39:38,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:38,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:41,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:41,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115646495] [2024-11-23 23:39:41,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115646495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:41,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785032796] [2024-11-23 23:39:41,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:41,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:41,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:41,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:41,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:39:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:41,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 23:39:41,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:42,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:44,124 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:44,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785032796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:44,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:44,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-11-23 23:39:44,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61651540] [2024-11-23 23:39:44,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:44,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-23 23:39:44,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:44,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-23 23:39:44,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2024-11-23 23:39:44,127 INFO L87 Difference]: Start difference. First operand 6482 states and 9245 transitions. Second operand has 31 states, 31 states have (on average 6.419354838709677) internal successors, (199), 31 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:45,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:45,751 INFO L93 Difference]: Finished difference Result 16590 states and 22397 transitions. [2024-11-23 23:39:45,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 23:39:45,752 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.419354838709677) internal successors, (199), 31 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-23 23:39:45,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:45,786 INFO L225 Difference]: With dead ends: 16590 [2024-11-23 23:39:45,786 INFO L226 Difference]: Without dead ends: 11774 [2024-11-23 23:39:45,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=398, Invalid=1408, Unknown=0, NotChecked=0, Total=1806 [2024-11-23 23:39:45,798 INFO L435 NwaCegarLoop]: 1500 mSDtfsCounter, 15112 mSDsluCounter, 6365 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15112 SdHoareTripleChecker+Valid, 7865 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:45,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15112 Valid, 7865 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:39:45,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11774 states. [2024-11-23 23:39:46,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11774 to 11622. [2024-11-23 23:39:46,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11622 states, 11620 states have (on average 1.3525817555938038) internal successors, (15717), 11621 states have internal predecessors, (15717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11622 states to 11622 states and 15717 transitions. [2024-11-23 23:39:46,351 INFO L78 Accepts]: Start accepts. Automaton has 11622 states and 15717 transitions. Word has length 73 [2024-11-23 23:39:46,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:46,354 INFO L471 AbstractCegarLoop]: Abstraction has 11622 states and 15717 transitions. [2024-11-23 23:39:46,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.419354838709677) internal successors, (199), 31 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:46,354 INFO L276 IsEmpty]: Start isEmpty. Operand 11622 states and 15717 transitions. [2024-11-23 23:39:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-23 23:39:46,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:46,358 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:39:46,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:39:46,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:46,559 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:46,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:46,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1110377720, now seen corresponding path program 1 times [2024-11-23 23:39:46,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:46,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925082534] [2024-11-23 23:39:46,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:46,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:47,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:47,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925082534] [2024-11-23 23:39:47,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925082534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:47,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183001541] [2024-11-23 23:39:47,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:47,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:47,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:47,291 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:47,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:39:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:47,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 23:39:47,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:48,040 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:48,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:48,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183001541] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:48,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:48,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-23 23:39:48,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783858125] [2024-11-23 23:39:48,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:49,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-23 23:39:49,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:49,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-23 23:39:49,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:39:49,001 INFO L87 Difference]: Start difference. First operand 11622 states and 15717 transitions. Second operand has 25 states, 25 states have (on average 7.16) internal successors, (179), 24 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:51,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:51,918 INFO L93 Difference]: Finished difference Result 51152 states and 66632 transitions. [2024-11-23 23:39:51,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-23 23:39:51,919 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.16) internal successors, (179), 24 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-23 23:39:51,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:52,025 INFO L225 Difference]: With dead ends: 51152 [2024-11-23 23:39:52,025 INFO L226 Difference]: Without dead ends: 41132 [2024-11-23 23:39:52,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=580, Invalid=2176, Unknown=0, NotChecked=0, Total=2756 [2024-11-23 23:39:52,051 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 21460 mSDsluCounter, 5168 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21460 SdHoareTripleChecker+Valid, 6689 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:52,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21460 Valid, 6689 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:39:52,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41132 states. [2024-11-23 23:39:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41132 to 40576. [2024-11-23 23:39:54,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40576 states, 40574 states have (on average 1.2780598412776656) internal successors, (51856), 40575 states have internal predecessors, (51856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40576 states to 40576 states and 51856 transitions. [2024-11-23 23:39:54,742 INFO L78 Accepts]: Start accepts. Automaton has 40576 states and 51856 transitions. Word has length 73 [2024-11-23 23:39:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:54,742 INFO L471 AbstractCegarLoop]: Abstraction has 40576 states and 51856 transitions. [2024-11-23 23:39:54,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.16) internal successors, (179), 24 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 40576 states and 51856 transitions. [2024-11-23 23:39:54,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-23 23:39:54,746 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:54,746 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:39:54,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:39:54,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:54,948 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:54,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:54,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1338386780, now seen corresponding path program 1 times [2024-11-23 23:39:54,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:54,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283365049] [2024-11-23 23:39:54,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:54,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:55,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:55,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283365049] [2024-11-23 23:39:55,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283365049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:55,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708975431] [2024-11-23 23:39:55,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:55,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:55,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:55,430 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:55,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:39:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:55,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 23:39:55,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:56,606 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:58,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708975431] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:58,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:58,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 30 [2024-11-23 23:39:58,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558789829] [2024-11-23 23:39:58,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:58,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-23 23:39:58,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:58,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-23 23:39:58,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-11-23 23:39:58,492 INFO L87 Difference]: Start difference. First operand 40576 states and 51856 transitions. Second operand has 30 states, 30 states have (on average 6.4) internal successors, (192), 30 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:40:00,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:40:00,742 INFO L93 Difference]: Finished difference Result 79450 states and 101028 transitions. [2024-11-23 23:40:00,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-23 23:40:00,742 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.4) internal successors, (192), 30 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-23 23:40:00,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:40:00,791 INFO L225 Difference]: With dead ends: 79450 [2024-11-23 23:40:00,791 INFO L226 Difference]: Without dead ends: 42260 [2024-11-23 23:40:00,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=468, Invalid=1512, Unknown=0, NotChecked=0, Total=1980 [2024-11-23 23:40:00,816 INFO L435 NwaCegarLoop]: 1513 mSDtfsCounter, 22342 mSDsluCounter, 7809 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22342 SdHoareTripleChecker+Valid, 9322 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:40:00,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22342 Valid, 9322 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:40:00,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42260 states. [2024-11-23 23:40:03,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42260 to 39776. [2024-11-23 23:40:03,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39776 states, 39774 states have (on average 1.2674611555287374) internal successors, (50412), 39775 states have internal predecessors, (50412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:40:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39776 states to 39776 states and 50412 transitions. [2024-11-23 23:40:03,123 INFO L78 Accepts]: Start accepts. Automaton has 39776 states and 50412 transitions. Word has length 74 [2024-11-23 23:40:03,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:40:03,123 INFO L471 AbstractCegarLoop]: Abstraction has 39776 states and 50412 transitions. [2024-11-23 23:40:03,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.4) internal successors, (192), 30 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:40:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand 39776 states and 50412 transitions. [2024-11-23 23:40:03,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-23 23:40:03,127 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:40:03,127 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:40:03,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 23:40:03,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:40:03,328 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:40:03,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:40:03,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1997806360, now seen corresponding path program 1 times [2024-11-23 23:40:03,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:40:03,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982476315] [2024-11-23 23:40:03,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:40:03,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:40:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:40:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:40:04,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:40:04,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982476315] [2024-11-23 23:40:04,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982476315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:40:04,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239388847] [2024-11-23 23:40:04,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:40:04,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:40:04,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:40:04,424 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:40:04,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:40:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:40:04,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-23 23:40:04,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:40:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:40:10,869 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:40:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:40:12,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239388847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:40:12,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:40:12,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 41 [2024-11-23 23:40:12,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874590481] [2024-11-23 23:40:12,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:40:12,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-23 23:40:12,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:40:12,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-23 23:40:12,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1427, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 23:40:12,897 INFO L87 Difference]: Start difference. First operand 39776 states and 50412 transitions. Second operand has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 41 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:40:16,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:40:16,656 INFO L93 Difference]: Finished difference Result 57672 states and 72600 transitions. [2024-11-23 23:40:16,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 23:40:16,656 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 41 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-23 23:40:16,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:40:16,692 INFO L225 Difference]: With dead ends: 57672 [2024-11-23 23:40:16,692 INFO L226 Difference]: Without dead ends: 44206 [2024-11-23 23:40:16,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=819, Invalid=3213, Unknown=0, NotChecked=0, Total=4032 [2024-11-23 23:40:16,707 INFO L435 NwaCegarLoop]: 1500 mSDtfsCounter, 12723 mSDsluCounter, 17863 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12723 SdHoareTripleChecker+Valid, 19363 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:40:16,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12723 Valid, 19363 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:40:16,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44206 states. [2024-11-23 23:40:17,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44206 to 36736. [2024-11-23 23:40:17,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36736 states, 36734 states have (on average 1.2668372624816246) internal successors, (46536), 36735 states have internal predecessors, (46536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:40:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36736 states to 36736 states and 46536 transitions. [2024-11-23 23:40:17,920 INFO L78 Accepts]: Start accepts. Automaton has 36736 states and 46536 transitions. Word has length 75 [2024-11-23 23:40:17,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:40:17,920 INFO L471 AbstractCegarLoop]: Abstraction has 36736 states and 46536 transitions. [2024-11-23 23:40:17,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 41 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:40:17,921 INFO L276 IsEmpty]: Start isEmpty. Operand 36736 states and 46536 transitions. [2024-11-23 23:40:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-23 23:40:17,922 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:40:17,922 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:40:17,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 23:40:18,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:40:18,123 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:40:18,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:40:18,123 INFO L85 PathProgramCache]: Analyzing trace with hash 542917572, now seen corresponding path program 1 times [2024-11-23 23:40:18,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:40:18,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33991197] [2024-11-23 23:40:18,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:40:18,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:40:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:40:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:40:18,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:40:18,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33991197] [2024-11-23 23:40:18,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33991197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:40:18,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389736742] [2024-11-23 23:40:18,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:40:18,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:40:18,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:40:18,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:40:18,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:40:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:40:19,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-23 23:40:19,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:40:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:40:19,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:40:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:40:21,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389736742] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:40:21,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:40:21,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-23 23:40:21,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181598889] [2024-11-23 23:40:21,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:40:21,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-23 23:40:21,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:40:21,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-23 23:40:21,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2024-11-23 23:40:21,092 INFO L87 Difference]: Start difference. First operand 36736 states and 46536 transitions. Second operand has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:40:36,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:40:36,913 INFO L93 Difference]: Finished difference Result 104188 states and 130875 transitions. [2024-11-23 23:40:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-23 23:40:36,914 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-23 23:40:36,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:40:36,985 INFO L225 Difference]: With dead ends: 104188 [2024-11-23 23:40:36,985 INFO L226 Difference]: Without dead ends: 83614 [2024-11-23 23:40:37,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8651 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=4417, Invalid=19453, Unknown=0, NotChecked=0, Total=23870 [2024-11-23 23:40:37,010 INFO L435 NwaCegarLoop]: 1510 mSDtfsCounter, 15499 mSDsluCounter, 19902 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15499 SdHoareTripleChecker+Valid, 21412 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:40:37,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15499 Valid, 21412 Invalid, 1929 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [103 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 23:40:37,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83614 states. [2024-11-23 23:40:38,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83614 to 29306. [2024-11-23 23:40:38,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29306 states, 29304 states have (on average 1.2708503958503958) internal successors, (37241), 29305 states have internal predecessors, (37241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:40:38,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29306 states to 29306 states and 37241 transitions. [2024-11-23 23:40:38,580 INFO L78 Accepts]: Start accepts. Automaton has 29306 states and 37241 transitions. Word has length 75 [2024-11-23 23:40:38,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:40:38,581 INFO L471 AbstractCegarLoop]: Abstraction has 29306 states and 37241 transitions. [2024-11-23 23:40:38,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:40:38,581 INFO L276 IsEmpty]: Start isEmpty. Operand 29306 states and 37241 transitions. [2024-11-23 23:40:38,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-23 23:40:38,582 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:40:38,582 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:40:38,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:40:38,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:40:38,783 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:40:38,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:40:38,783 INFO L85 PathProgramCache]: Analyzing trace with hash -684367234, now seen corresponding path program 1 times [2024-11-23 23:40:38,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:40:38,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188026350] [2024-11-23 23:40:38,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:40:38,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:40:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:40:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:40:41,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:40:41,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188026350] [2024-11-23 23:40:41,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188026350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:40:41,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855706846] [2024-11-23 23:40:41,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:40:41,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:40:41,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:40:41,164 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:40:41,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:40:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:40:41,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-23 23:40:41,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:40:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:40:46,651 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:40:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:40:54,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855706846] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:40:54,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:40:54,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28, 21] total 72 [2024-11-23 23:40:54,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608106628] [2024-11-23 23:40:54,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:40:54,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-23 23:40:54,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:40:54,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-23 23:40:54,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=617, Invalid=4495, Unknown=0, NotChecked=0, Total=5112 [2024-11-23 23:40:54,068 INFO L87 Difference]: Start difference. First operand 29306 states and 37241 transitions. Second operand has 72 states, 72 states have (on average 2.9166666666666665) internal successors, (210), 72 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) [2024-11-23 23:43:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:43:30,580 INFO L93 Difference]: Finished difference Result 95262 states and 119907 transitions. [2024-11-23 23:43:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 307 states. [2024-11-23 23:43:30,580 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.9166666666666665) internal successors, (210), 72 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 76 [2024-11-23 23:43:30,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:43:30,651 INFO L225 Difference]: With dead ends: 95262 [2024-11-23 23:43:30,651 INFO L226 Difference]: Without dead ends: 88050 [2024-11-23 23:43:30,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 374 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59032 ImplicationChecksByTransitivity, 148.2s TimeCoverageRelationStatistics Valid=20631, Invalid=120369, Unknown=0, NotChecked=0, Total=141000 [2024-11-23 23:43:30,673 INFO L435 NwaCegarLoop]: 1568 mSDtfsCounter, 32788 mSDsluCounter, 25425 mSDsCounter, 0 mSdLazyCounter, 6801 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32788 SdHoareTripleChecker+Valid, 26993 SdHoareTripleChecker+Invalid, 7033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 6801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:43:30,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32788 Valid, 26993 Invalid, 7033 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [232 Valid, 6801 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2024-11-23 23:43:30,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88050 states. [2024-11-23 23:43:32,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88050 to 34081. [2024-11-23 23:43:32,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34081 states, 34079 states have (on average 1.2630945743713138) internal successors, (43045), 34080 states have internal predecessors, (43045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:32,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34081 states to 34081 states and 43045 transitions. [2024-11-23 23:43:32,975 INFO L78 Accepts]: Start accepts. Automaton has 34081 states and 43045 transitions. Word has length 76 [2024-11-23 23:43:32,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:43:32,975 INFO L471 AbstractCegarLoop]: Abstraction has 34081 states and 43045 transitions. [2024-11-23 23:43:32,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.9166666666666665) internal successors, (210), 72 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) [2024-11-23 23:43:32,975 INFO L276 IsEmpty]: Start isEmpty. Operand 34081 states and 43045 transitions. [2024-11-23 23:43:32,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-23 23:43:32,976 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:43:32,976 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:43:32,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 23:43:33,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-23 23:43:33,178 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:43:33,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:43:33,178 INFO L85 PathProgramCache]: Analyzing trace with hash 823031838, now seen corresponding path program 1 times [2024-11-23 23:43:33,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:43:33,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075638717] [2024-11-23 23:43:33,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:33,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:43:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:43:33,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:43:33,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075638717] [2024-11-23 23:43:33,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075638717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:43:33,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321540230] [2024-11-23 23:43:33,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:33,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:43:33,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:43:33,929 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:43:33,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:43:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:34,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-23 23:43:34,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:43:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:43:39,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:43:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:43:46,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321540230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:43:46,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:43:46,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 24] total 55 [2024-11-23 23:43:46,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487152881] [2024-11-23 23:43:46,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:43:46,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-23 23:43:46,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:43:46,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-23 23:43:46,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=2540, Unknown=0, NotChecked=0, Total=2970 [2024-11-23 23:43:46,383 INFO L87 Difference]: Start difference. First operand 34081 states and 43045 transitions. Second operand has 55 states, 55 states have (on average 3.4727272727272727) internal successors, (191), 55 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:02,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:02,226 INFO L93 Difference]: Finished difference Result 51673 states and 65188 transitions. [2024-11-23 23:44:02,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-23 23:44:02,227 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.4727272727272727) internal successors, (191), 55 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-23 23:44:02,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:02,255 INFO L225 Difference]: With dead ends: 51673 [2024-11-23 23:44:02,255 INFO L226 Difference]: Without dead ends: 35705 [2024-11-23 23:44:02,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2994 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=2837, Invalid=9819, Unknown=0, NotChecked=0, Total=12656 [2024-11-23 23:44:02,265 INFO L435 NwaCegarLoop]: 1539 mSDtfsCounter, 21819 mSDsluCounter, 21761 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21819 SdHoareTripleChecker+Valid, 23300 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:02,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21819 Valid, 23300 Invalid, 2513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-23 23:44:02,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35705 states. [2024-11-23 23:44:03,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35705 to 24151. [2024-11-23 23:44:03,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24151 states, 24149 states have (on average 1.2740900244316535) internal successors, (30768), 24150 states have internal predecessors, (30768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:03,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24151 states to 24151 states and 30768 transitions. [2024-11-23 23:44:03,687 INFO L78 Accepts]: Start accepts. Automaton has 24151 states and 30768 transitions. Word has length 77 [2024-11-23 23:44:03,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:03,687 INFO L471 AbstractCegarLoop]: Abstraction has 24151 states and 30768 transitions. [2024-11-23 23:44:03,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.4727272727272727) internal successors, (191), 55 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:03,688 INFO L276 IsEmpty]: Start isEmpty. Operand 24151 states and 30768 transitions. [2024-11-23 23:44:03,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-23 23:44:03,692 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:03,692 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:03,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-23 23:44:03,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:03,893 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:03,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:03,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1357442190, now seen corresponding path program 1 times [2024-11-23 23:44:03,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:03,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915879054] [2024-11-23 23:44:03,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:03,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:04,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:04,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915879054] [2024-11-23 23:44:04,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915879054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:04,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952946064] [2024-11-23 23:44:04,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:04,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:04,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:04,754 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:04,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:44:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:04,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 23:44:04,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 33 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:06,226 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:44:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:08,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952946064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:44:08,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:44:08,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2024-11-23 23:44:08,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412874632] [2024-11-23 23:44:08,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:44:08,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-23 23:44:08,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:08,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-23 23:44:08,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2024-11-23 23:44:08,590 INFO L87 Difference]: Start difference. First operand 24151 states and 30768 transitions. Second operand has 26 states, 26 states have (on average 10.23076923076923) internal successors, (266), 25 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:10,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:10,706 INFO L93 Difference]: Finished difference Result 36606 states and 46342 transitions. [2024-11-23 23:44:10,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:44:10,706 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.23076923076923) internal successors, (266), 25 states have internal predecessors, (266), 0 states have call successors, (0), 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 121 [2024-11-23 23:44:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:10,741 INFO L225 Difference]: With dead ends: 36606 [2024-11-23 23:44:10,741 INFO L226 Difference]: Without dead ends: 25505 [2024-11-23 23:44:10,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2024-11-23 23:44:10,754 INFO L435 NwaCegarLoop]: 1527 mSDtfsCounter, 13454 mSDsluCounter, 10887 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13454 SdHoareTripleChecker+Valid, 12414 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:10,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13454 Valid, 12414 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:44:10,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25505 states. [2024-11-23 23:44:12,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25505 to 24151. [2024-11-23 23:44:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24151 states, 24149 states have (on average 1.265766698414013) internal successors, (30567), 24150 states have internal predecessors, (30567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:12,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24151 states to 24151 states and 30567 transitions. [2024-11-23 23:44:12,507 INFO L78 Accepts]: Start accepts. Automaton has 24151 states and 30567 transitions. Word has length 121 [2024-11-23 23:44:12,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:12,507 INFO L471 AbstractCegarLoop]: Abstraction has 24151 states and 30567 transitions. [2024-11-23 23:44:12,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.23076923076923) internal successors, (266), 25 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:12,508 INFO L276 IsEmpty]: Start isEmpty. Operand 24151 states and 30567 transitions. [2024-11-23 23:44:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-23 23:44:12,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:12,512 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-23 23:44:12,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:44:12,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-23 23:44:12,716 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:12,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:12,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1591585104, now seen corresponding path program 1 times [2024-11-23 23:44:12,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:12,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613307865] [2024-11-23 23:44:12,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:12,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 44 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:13,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:13,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613307865] [2024-11-23 23:44:13,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613307865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:13,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024624405] [2024-11-23 23:44:13,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:13,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:13,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:13,819 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:13,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:44:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:14,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-23 23:44:14,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 35 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:17,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:44:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 35 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:22,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024624405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:44:22,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:44:22,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 45 [2024-11-23 23:44:22,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050708150] [2024-11-23 23:44:22,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:44:22,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-23 23:44:22,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:22,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-23 23:44:22,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1813, Unknown=0, NotChecked=0, Total=1980 [2024-11-23 23:44:22,022 INFO L87 Difference]: Start difference. First operand 24151 states and 30567 transitions. Second operand has 45 states, 45 states have (on average 7.155555555555556) internal successors, (322), 45 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:55,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:55,665 INFO L93 Difference]: Finished difference Result 52319 states and 65109 transitions. [2024-11-23 23:44:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-23 23:44:55,665 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 7.155555555555556) internal successors, (322), 45 states have internal predecessors, (322), 0 states have call successors, (0), 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 121 [2024-11-23 23:44:55,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:55,708 INFO L225 Difference]: With dead ends: 52319 [2024-11-23 23:44:55,708 INFO L226 Difference]: Without dead ends: 36670 [2024-11-23 23:44:55,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8480 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=3936, Invalid=24120, Unknown=0, NotChecked=0, Total=28056 [2024-11-23 23:44:55,722 INFO L435 NwaCegarLoop]: 1620 mSDtfsCounter, 26610 mSDsluCounter, 31171 mSDsCounter, 0 mSdLazyCounter, 3974 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26610 SdHoareTripleChecker+Valid, 32791 SdHoareTripleChecker+Invalid, 4089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:55,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26610 Valid, 32791 Invalid, 4089 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 3974 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-23 23:44:55,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36670 states. [2024-11-23 23:44:57,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36670 to 29121. [2024-11-23 23:44:57,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29121 states, 29119 states have (on average 1.2433119269205672) internal successors, (36204), 29120 states have internal predecessors, (36204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:57,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29121 states to 29121 states and 36204 transitions. [2024-11-23 23:44:57,961 INFO L78 Accepts]: Start accepts. Automaton has 29121 states and 36204 transitions. Word has length 121 [2024-11-23 23:44:57,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:57,961 INFO L471 AbstractCegarLoop]: Abstraction has 29121 states and 36204 transitions. [2024-11-23 23:44:57,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 7.155555555555556) internal successors, (322), 45 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:57,962 INFO L276 IsEmpty]: Start isEmpty. Operand 29121 states and 36204 transitions. [2024-11-23 23:44:57,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-23 23:44:57,964 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:57,964 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-23 23:44:57,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-23 23:44:58,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-23 23:44:58,165 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:58,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:58,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1379830784, now seen corresponding path program 1 times [2024-11-23 23:44:58,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:58,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277536904] [2024-11-23 23:44:58,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:58,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 43 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:59,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:59,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277536904] [2024-11-23 23:44:59,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277536904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:59,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820407363] [2024-11-23 23:44:59,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:59,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:59,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:59,553 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:59,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:44:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:59,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-23 23:44:59,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:45:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 20 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:02,182 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:45:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 16 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:06,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820407363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:45:06,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:45:06,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 16] total 51 [2024-11-23 23:45:06,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161185498] [2024-11-23 23:45:06,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:45:06,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-23 23:45:06,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:06,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-23 23:45:06,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=2376, Unknown=0, NotChecked=0, Total=2652 [2024-11-23 23:45:06,409 INFO L87 Difference]: Start difference. First operand 29121 states and 36204 transitions. Second operand has 52 states, 52 states have (on average 6.711538461538462) internal successors, (349), 51 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:55,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:55,311 INFO L93 Difference]: Finished difference Result 101676 states and 125278 transitions. [2024-11-23 23:45:55,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2024-11-23 23:45:55,311 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.711538461538462) internal successors, (349), 51 states have internal predecessors, (349), 0 states have call successors, (0), 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 121 [2024-11-23 23:45:55,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:55,378 INFO L225 Difference]: With dead ends: 101676 [2024-11-23 23:45:55,378 INFO L226 Difference]: Without dead ends: 85344 [2024-11-23 23:45:55,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27309 ImplicationChecksByTransitivity, 41.2s TimeCoverageRelationStatistics Valid=10464, Invalid=68216, Unknown=0, NotChecked=0, Total=78680 [2024-11-23 23:45:55,396 INFO L435 NwaCegarLoop]: 1652 mSDtfsCounter, 30918 mSDsluCounter, 26741 mSDsCounter, 0 mSdLazyCounter, 4085 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30918 SdHoareTripleChecker+Valid, 28393 SdHoareTripleChecker+Invalid, 4310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 4085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:55,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30918 Valid, 28393 Invalid, 4310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [225 Valid, 4085 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-23 23:45:55,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85344 states. [2024-11-23 23:46:00,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85344 to 65230. [2024-11-23 23:46:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65230 states, 65228 states have (on average 1.2246427914392592) internal successors, (79881), 65229 states have internal predecessors, (79881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:00,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65230 states to 65230 states and 79881 transitions. [2024-11-23 23:46:00,168 INFO L78 Accepts]: Start accepts. Automaton has 65230 states and 79881 transitions. Word has length 121 [2024-11-23 23:46:00,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:00,168 INFO L471 AbstractCegarLoop]: Abstraction has 65230 states and 79881 transitions. [2024-11-23 23:46:00,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 6.711538461538462) internal successors, (349), 51 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 65230 states and 79881 transitions. [2024-11-23 23:46:00,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-23 23:46:00,171 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:00,171 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-23 23:46:00,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-23 23:46:00,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:00,373 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:00,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:00,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1695257852, now seen corresponding path program 1 times [2024-11-23 23:46:00,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:00,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866563461] [2024-11-23 23:46:00,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:00,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:02,349 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 42 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:46:02,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:02,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866563461] [2024-11-23 23:46:02,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866563461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:02,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275150530] [2024-11-23 23:46:02,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:02,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:02,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:02,351 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:02,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:46:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:02,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 23:46:02,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:03,463 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 20 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:46:03,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:46:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 16 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:46:06,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275150530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:46:06,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:46:06,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 11, 11] total 45 [2024-11-23 23:46:06,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097566561] [2024-11-23 23:46:06,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:46:06,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-23 23:46:06,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:06,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-23 23:46:06,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1909, Unknown=0, NotChecked=0, Total=2070 [2024-11-23 23:46:06,417 INFO L87 Difference]: Start difference. First operand 65230 states and 79881 transitions. Second operand has 46 states, 46 states have (on average 7.5) internal successors, (345), 45 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:31,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:31,778 INFO L93 Difference]: Finished difference Result 125723 states and 152143 transitions. [2024-11-23 23:46:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-23 23:46:31,781 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 7.5) internal successors, (345), 45 states have internal predecessors, (345), 0 states have call successors, (0), 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 121 [2024-11-23 23:46:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:31,871 INFO L225 Difference]: With dead ends: 125723 [2024-11-23 23:46:31,871 INFO L226 Difference]: Without dead ends: 91847 [2024-11-23 23:46:31,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8932 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=3896, Invalid=25516, Unknown=0, NotChecked=0, Total=29412 [2024-11-23 23:46:31,887 INFO L435 NwaCegarLoop]: 1672 mSDtfsCounter, 24238 mSDsluCounter, 33648 mSDsCounter, 0 mSdLazyCounter, 5397 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24238 SdHoareTripleChecker+Valid, 35320 SdHoareTripleChecker+Invalid, 5479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 5397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:31,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24238 Valid, 35320 Invalid, 5479 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [82 Valid, 5397 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-23 23:46:31,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91847 states. [2024-11-23 23:46:36,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91847 to 54234. [2024-11-23 23:46:36,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54234 states, 54232 states have (on average 1.2175283965186605) internal successors, (66029), 54233 states have internal predecessors, (66029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54234 states to 54234 states and 66029 transitions. [2024-11-23 23:46:36,783 INFO L78 Accepts]: Start accepts. Automaton has 54234 states and 66029 transitions. Word has length 121 [2024-11-23 23:46:36,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:36,784 INFO L471 AbstractCegarLoop]: Abstraction has 54234 states and 66029 transitions. [2024-11-23 23:46:36,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 7.5) internal successors, (345), 45 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:36,784 INFO L276 IsEmpty]: Start isEmpty. Operand 54234 states and 66029 transitions. [2024-11-23 23:46:36,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-23 23:46:36,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:36,787 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:36,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 23:46:36,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:36,987 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:36,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:36,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1999412094, now seen corresponding path program 1 times [2024-11-23 23:46:36,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:36,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152129234] [2024-11-23 23:46:36,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:36,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:46:37,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:37,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152129234] [2024-11-23 23:46:37,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152129234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:37,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:37,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:46:37,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700018490] [2024-11-23 23:46:37,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:37,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:46:37,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:37,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:46:37,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:46:37,062 INFO L87 Difference]: Start difference. First operand 54234 states and 66029 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:46,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:46,210 INFO L93 Difference]: Finished difference Result 57242 states and 71653 transitions. [2024-11-23 23:46:46,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:46:46,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2024-11-23 23:46:46,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:46,257 INFO L225 Difference]: With dead ends: 57242 [2024-11-23 23:46:46,257 INFO L226 Difference]: Without dead ends: 55738 [2024-11-23 23:46:46,265 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 [2024-11-23 23:46:46,265 INFO L435 NwaCegarLoop]: 430 mSDtfsCounter, 1000 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:46,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 437 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-23 23:46:46,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55738 states. [2024-11-23 23:46:51,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55738 to 55736. [2024-11-23 23:46:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55736 states, 55734 states have (on average 1.2234183801629168) internal successors, (68186), 55735 states have internal predecessors, (68186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:51,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55736 states to 55736 states and 68186 transitions. [2024-11-23 23:46:51,412 INFO L78 Accepts]: Start accepts. Automaton has 55736 states and 68186 transitions. Word has length 121 [2024-11-23 23:46:51,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:51,413 INFO L471 AbstractCegarLoop]: Abstraction has 55736 states and 68186 transitions. [2024-11-23 23:46:51,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:51,413 INFO L276 IsEmpty]: Start isEmpty. Operand 55736 states and 68186 transitions. [2024-11-23 23:46:51,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-23 23:46:51,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:51,418 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:51,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-23 23:46:51,418 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:51,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:51,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1600056260, now seen corresponding path program 1 times [2024-11-23 23:46:51,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:51,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045026920] [2024-11-23 23:46:51,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:51,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 16 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:46:54,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:54,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045026920] [2024-11-23 23:46:54,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045026920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:54,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734901987] [2024-11-23 23:46:54,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:54,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:54,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:54,024 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:54,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 23:46:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:54,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-23 23:46:54,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:47:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 16 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:47:01,055 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:47:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 16 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:47:11,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734901987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:47:11,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:47:11,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 29, 29] total 81 [2024-11-23 23:47:11,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689187205] [2024-11-23 23:47:11,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:47:11,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-23 23:47:11,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:11,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-23 23:47:11,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=5936, Unknown=0, NotChecked=0, Total=6480 [2024-11-23 23:47:11,644 INFO L87 Difference]: Start difference. First operand 55736 states and 68186 transitions. Second operand has 81 states, 81 states have (on average 4.333333333333333) internal successors, (351), 81 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:51:04,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:51:04,653 INFO L93 Difference]: Finished difference Result 193214 states and 233359 transitions. [2024-11-23 23:51:04,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 469 states. [2024-11-23 23:51:04,654 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.333333333333333) internal successors, (351), 81 states have internal predecessors, (351), 0 states have call successors, (0), 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 122 [2024-11-23 23:51:04,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:51:05,219 INFO L225 Difference]: With dead ends: 193214 [2024-11-23 23:51:05,219 INFO L226 Difference]: Without dead ends: 178429 [2024-11-23 23:51:05,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 538 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122113 ImplicationChecksByTransitivity, 202.3s TimeCoverageRelationStatistics Valid=25912, Invalid=265148, Unknown=0, NotChecked=0, Total=291060 [2024-11-23 23:51:05,359 INFO L435 NwaCegarLoop]: 1745 mSDtfsCounter, 40788 mSDsluCounter, 41507 mSDsCounter, 0 mSdLazyCounter, 13781 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40788 SdHoareTripleChecker+Valid, 43252 SdHoareTripleChecker+Invalid, 14204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 13781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:51:05,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40788 Valid, 43252 Invalid, 14204 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [423 Valid, 13781 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2024-11-23 23:51:05,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178429 states. [2024-11-23 23:51:16,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178429 to 69553. [2024-11-23 23:51:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69553 states, 69551 states have (on average 1.2180701930957138) internal successors, (84718), 69552 states have internal predecessors, (84718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:51:16,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69553 states to 69553 states and 84718 transitions. [2024-11-23 23:51:16,504 INFO L78 Accepts]: Start accepts. Automaton has 69553 states and 84718 transitions. Word has length 122 [2024-11-23 23:51:16,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:51:16,505 INFO L471 AbstractCegarLoop]: Abstraction has 69553 states and 84718 transitions. [2024-11-23 23:51:16,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.333333333333333) internal successors, (351), 81 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:51:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 69553 states and 84718 transitions. [2024-11-23 23:51:16,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-23 23:51:16,520 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:51:16,520 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:51:16,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-23 23:51:16,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-23 23:51:16,722 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:51:16,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:51:16,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1959084384, now seen corresponding path program 1 times [2024-11-23 23:51:16,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:51:16,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155294949] [2024-11-23 23:51:16,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:51:16,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:51:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:51:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 16 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:51:20,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:51:20,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155294949] [2024-11-23 23:51:20,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155294949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:51:20,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011476859] [2024-11-23 23:51:20,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:51:20,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:51:20,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:51:20,831 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:51:20,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e69458a-9ba1-454d-a4b9-fb4a876a2f9a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 23:51:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:51:21,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-23 23:51:21,091 INFO L279 TraceCheckSpWp]: Computing forward predicates...