./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-31.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7443a0a8cb83ad1cb418009a7dc67d45dd495b9ce5249e0f3a79a6d2936d9f0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:40:59,144 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:40:59,284 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:40:59,297 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:40:59,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:40:59,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:40:59,336 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:40:59,336 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:40:59,337 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:40:59,337 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:40:59,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:40:59,339 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:40:59,340 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:40:59,340 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:40:59,340 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:40:59,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:40:59,341 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:40:59,342 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:40:59,342 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:40:59,342 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:40:59,342 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:40:59,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:40:59,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:40:59,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:40:59,343 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:40:59,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:40:59,343 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:40:59,343 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:40:59,344 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:40:59,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:40:59,344 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:40:59,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:40:59,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:40:59,345 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:40:59,345 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:40:59,346 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:40:59,346 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:40:59,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:40:59,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:40:59,346 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:40:59,347 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:40:59,347 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:40:59,347 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:40:59,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:40:59,347 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:40:59,347 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:40:59,347 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:40:59,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:40:59,347 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_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7443a0a8cb83ad1cb418009a7dc67d45dd495b9ce5249e0f3a79a6d2936d9f0 [2024-11-28 03:40:59,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:40:59,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:40:59,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:40:59,752 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:40:59,753 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:40:59,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-31.i [2024-11-28 03:41:03,091 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/data/793fee7f0/fd7106aa1f084a9f83c5a9343b1ede35/FLAGfc9e5f8a7 [2024-11-28 03:41:03,509 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:41:03,510 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-31.i [2024-11-28 03:41:03,537 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/data/793fee7f0/fd7106aa1f084a9f83c5a9343b1ede35/FLAGfc9e5f8a7 [2024-11-28 03:41:03,565 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/data/793fee7f0/fd7106aa1f084a9f83c5a9343b1ede35 [2024-11-28 03:41:03,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:41:03,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:41:03,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:41:03,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:41:03,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:41:03,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:41:03" (1/1) ... [2024-11-28 03:41:03,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ad7792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:03, skipping insertion in model container [2024-11-28 03:41:03,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:41:03" (1/1) ... [2024-11-28 03:41:03,657 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:41:03,851 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_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-31.i[916,929] [2024-11-28 03:41:04,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:41:04,316 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:41:04,330 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_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-31.i[916,929] [2024-11-28 03:41:04,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:41:04,515 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:41:04,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:04 WrapperNode [2024-11-28 03:41:04,516 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:41:04,517 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:41:04,517 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:41:04,518 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:41:04,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:04" (1/1) ... [2024-11-28 03:41:04,559 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:04" (1/1) ... [2024-11-28 03:41:04,747 INFO L138 Inliner]: procedures = 26, calls = 105, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 911 [2024-11-28 03:41:04,748 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:41:04,750 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:41:04,750 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:41:04,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:41:04,759 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:04" (1/1) ... [2024-11-28 03:41:04,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:04" (1/1) ... [2024-11-28 03:41:04,789 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:04" (1/1) ... [2024-11-28 03:41:04,923 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:41:04,923 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:04" (1/1) ... [2024-11-28 03:41:04,924 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:04" (1/1) ... [2024-11-28 03:41:04,978 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:04" (1/1) ... [2024-11-28 03:41:04,985 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:04" (1/1) ... [2024-11-28 03:41:05,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:04" (1/1) ... [2024-11-28 03:41:05,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:04" (1/1) ... [2024-11-28 03:41:05,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:04" (1/1) ... [2024-11-28 03:41:05,052 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:41:05,054 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:41:05,055 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:41:05,055 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:41:05,056 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:04" (1/1) ... [2024-11-28 03:41:05,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:41:05,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:05,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:41:05,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:41:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:41:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:41:05,136 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:41:05,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:41:05,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:41:05,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:41:05,358 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:41:05,360 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:41:07,886 INFO L? ?]: Removed 102 outVars from TransFormulas that were not future-live. [2024-11-28 03:41:07,887 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:41:07,923 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:41:07,927 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:41:07,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:41:07 BoogieIcfgContainer [2024-11-28 03:41:07,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:41:07,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:41:07,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:41:07,939 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:41:07,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:41:03" (1/3) ... [2024-11-28 03:41:07,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730cf8b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:41:07, skipping insertion in model container [2024-11-28 03:41:07,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:41:04" (2/3) ... [2024-11-28 03:41:07,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730cf8b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:41:07, skipping insertion in model container [2024-11-28 03:41:07,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:41:07" (3/3) ... [2024-11-28 03:41:07,944 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-31.i [2024-11-28 03:41:07,963 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:41:07,966 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-31.i that has 2 procedures, 363 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:41:08,069 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:41:08,086 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;@2981e105, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:41:08,086 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:41:08,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 363 states, 268 states have (on average 1.5223880597014925) internal successors, (408), 269 states have internal predecessors, (408), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-28 03:41:08,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2024-11-28 03:41:08,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:08,139 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:08,140 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:08,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:08,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1864424466, now seen corresponding path program 1 times [2024-11-28 03:41:08,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:08,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705798820] [2024-11-28 03:41:08,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:08,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 16562 trivial. 0 not checked. [2024-11-28 03:41:09,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:09,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705798820] [2024-11-28 03:41:09,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705798820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:09,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201491517] [2024-11-28 03:41:09,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:09,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:09,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:09,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:09,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:41:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:09,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:41:09,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 16562 trivial. 0 not checked. [2024-11-28 03:41:09,870 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:41:09,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201491517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:09,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:41:09,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:41:09,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677056328] [2024-11-28 03:41:09,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:09,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:41:09,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:09,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:41:09,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:41:09,919 INFO L87 Difference]: Start difference. First operand has 363 states, 268 states have (on average 1.5223880597014925) internal successors, (408), 269 states have internal predecessors, (408), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Second operand has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 2 states have call successors, (92) [2024-11-28 03:41:10,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:10,057 INFO L93 Difference]: Finished difference Result 719 states and 1270 transitions. [2024-11-28 03:41:10,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:41:10,059 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 2 states have call successors, (92) Word has length 604 [2024-11-28 03:41:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:10,070 INFO L225 Difference]: With dead ends: 719 [2024-11-28 03:41:10,070 INFO L226 Difference]: Without dead ends: 359 [2024-11-28 03:41:10,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:41:10,079 INFO L435 NwaCegarLoop]: 582 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, 582 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:10,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:41:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-11-28 03:41:10,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2024-11-28 03:41:10,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 265 states have (on average 1.5018867924528303) internal successors, (398), 265 states have internal predecessors, (398), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-28 03:41:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 582 transitions. [2024-11-28 03:41:10,194 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 582 transitions. Word has length 604 [2024-11-28 03:41:10,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:10,194 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 582 transitions. [2024-11-28 03:41:10,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 2 states have call successors, (92) [2024-11-28 03:41:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 582 transitions. [2024-11-28 03:41:10,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2024-11-28 03:41:10,212 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:10,212 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:10,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:41:10,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:41:10,417 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:10,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:10,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1038862842, now seen corresponding path program 1 times [2024-11-28 03:41:10,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:10,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562902385] [2024-11-28 03:41:10,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:10,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:12,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:41:12,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:12,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562902385] [2024-11-28 03:41:12,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562902385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:12,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:12,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:41:12,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819669184] [2024-11-28 03:41:12,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:12,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:12,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:12,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:12,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:41:12,054 INFO L87 Difference]: Start difference. First operand 359 states and 582 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:12,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:12,795 INFO L93 Difference]: Finished difference Result 1072 states and 1741 transitions. [2024-11-28 03:41:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:41:12,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 604 [2024-11-28 03:41:12,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:12,807 INFO L225 Difference]: With dead ends: 1072 [2024-11-28 03:41:12,807 INFO L226 Difference]: Without dead ends: 716 [2024-11-28 03:41:12,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:41:12,810 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 590 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:12,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1693 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:41:12,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-28 03:41:12,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 697. [2024-11-28 03:41:12,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 510 states have (on average 1.503921568627451) internal successors, (767), 510 states have internal predecessors, (767), 184 states have call successors, (184), 2 states have call predecessors, (184), 2 states have return successors, (184), 184 states have call predecessors, (184), 184 states have call successors, (184) [2024-11-28 03:41:12,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1135 transitions. [2024-11-28 03:41:12,999 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1135 transitions. Word has length 604 [2024-11-28 03:41:13,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:13,004 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1135 transitions. [2024-11-28 03:41:13,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:13,004 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1135 transitions. [2024-11-28 03:41:13,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2024-11-28 03:41:13,024 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:13,025 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:13,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:41:13,025 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:13,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:13,026 INFO L85 PathProgramCache]: Analyzing trace with hash 926713154, now seen corresponding path program 1 times [2024-11-28 03:41:13,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:13,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353813942] [2024-11-28 03:41:13,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:13,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:14,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-28 03:41:14,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:14,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353813942] [2024-11-28 03:41:14,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353813942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:14,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125839425] [2024-11-28 03:41:14,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:14,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:14,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:14,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:14,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:41:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:15,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 1436 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:41:15,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:41:16,421 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:41:16,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125839425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:16,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:41:16,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-28 03:41:16,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839945192] [2024-11-28 03:41:16,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:16,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:16,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:16,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:16,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:41:16,425 INFO L87 Difference]: Start difference. First operand 697 states and 1135 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:17,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:17,065 INFO L93 Difference]: Finished difference Result 1254 states and 2043 transitions. [2024-11-28 03:41:17,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:41:17,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 605 [2024-11-28 03:41:17,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:17,073 INFO L225 Difference]: With dead ends: 1254 [2024-11-28 03:41:17,073 INFO L226 Difference]: Without dead ends: 716 [2024-11-28 03:41:17,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 604 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:41:17,076 INFO L435 NwaCegarLoop]: 570 mSDtfsCounter, 397 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:17,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 1696 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:41:17,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-28 03:41:17,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 698. [2024-11-28 03:41:17,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 511 states have (on average 1.5009784735812133) internal successors, (767), 511 states have internal predecessors, (767), 184 states have call successors, (184), 2 states have call predecessors, (184), 2 states have return successors, (184), 184 states have call predecessors, (184), 184 states have call successors, (184) [2024-11-28 03:41:17,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1135 transitions. [2024-11-28 03:41:17,204 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1135 transitions. Word has length 605 [2024-11-28 03:41:17,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:17,205 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1135 transitions. [2024-11-28 03:41:17,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:17,206 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1135 transitions. [2024-11-28 03:41:17,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2024-11-28 03:41:17,221 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:17,222 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:17,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:41:17,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:17,426 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:17,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:17,427 INFO L85 PathProgramCache]: Analyzing trace with hash -6203777, now seen corresponding path program 1 times [2024-11-28 03:41:17,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:17,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644022225] [2024-11-28 03:41:17,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:17,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:41:18,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:18,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644022225] [2024-11-28 03:41:18,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644022225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:18,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:18,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:41:18,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142890890] [2024-11-28 03:41:18,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:18,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:18,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:18,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:18,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:41:18,378 INFO L87 Difference]: Start difference. First operand 698 states and 1135 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:19,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:19,016 INFO L93 Difference]: Finished difference Result 1437 states and 2348 transitions. [2024-11-28 03:41:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:41:19,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 606 [2024-11-28 03:41:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:19,024 INFO L225 Difference]: With dead ends: 1437 [2024-11-28 03:41:19,024 INFO L226 Difference]: Without dead ends: 898 [2024-11-28 03:41:19,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:41:19,027 INFO L435 NwaCegarLoop]: 570 mSDtfsCounter, 401 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:19,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1677 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:41:19,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2024-11-28 03:41:19,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 882. [2024-11-28 03:41:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 695 states have (on average 1.5453237410071943) internal successors, (1074), 695 states have internal predecessors, (1074), 184 states have call successors, (184), 2 states have call predecessors, (184), 2 states have return successors, (184), 184 states have call predecessors, (184), 184 states have call successors, (184) [2024-11-28 03:41:19,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1442 transitions. [2024-11-28 03:41:19,117 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1442 transitions. Word has length 606 [2024-11-28 03:41:19,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:19,118 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1442 transitions. [2024-11-28 03:41:19,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:19,119 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1442 transitions. [2024-11-28 03:41:19,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2024-11-28 03:41:19,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:19,128 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:19,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:41:19,129 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:19,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1805383013, now seen corresponding path program 1 times [2024-11-28 03:41:19,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:19,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770049758] [2024-11-28 03:41:19,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:19,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:41:19,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:19,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770049758] [2024-11-28 03:41:19,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770049758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:19,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:19,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:41:19,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314671560] [2024-11-28 03:41:19,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:19,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:41:19,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:19,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:41:19,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:19,579 INFO L87 Difference]: Start difference. First operand 882 states and 1442 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:19,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:19,735 INFO L93 Difference]: Finished difference Result 2189 states and 3581 transitions. [2024-11-28 03:41:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:41:19,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 607 [2024-11-28 03:41:19,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:19,746 INFO L225 Difference]: With dead ends: 2189 [2024-11-28 03:41:19,746 INFO L226 Difference]: Without dead ends: 1495 [2024-11-28 03:41:19,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:19,749 INFO L435 NwaCegarLoop]: 564 mSDtfsCounter, 373 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:19,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1119 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:41:19,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2024-11-28 03:41:19,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1492. [2024-11-28 03:41:19,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1266 states have (on average 1.5726698262243286) internal successors, (1991), 1267 states have internal predecessors, (1991), 221 states have call successors, (221), 4 states have call predecessors, (221), 4 states have return successors, (221), 220 states have call predecessors, (221), 221 states have call successors, (221) [2024-11-28 03:41:19,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2433 transitions. [2024-11-28 03:41:19,855 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2433 transitions. Word has length 607 [2024-11-28 03:41:19,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:19,856 INFO L471 AbstractCegarLoop]: Abstraction has 1492 states and 2433 transitions. [2024-11-28 03:41:19,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:19,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2433 transitions. [2024-11-28 03:41:19,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2024-11-28 03:41:19,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:19,863 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:19,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:41:19,863 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:19,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash 433575715, now seen corresponding path program 1 times [2024-11-28 03:41:19,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:19,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925417522] [2024-11-28 03:41:19,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:19,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:41:20,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:20,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925417522] [2024-11-28 03:41:20,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925417522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:20,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:20,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:41:20,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7603458] [2024-11-28 03:41:20,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:20,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:41:20,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:20,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:41:20,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:20,303 INFO L87 Difference]: Start difference. First operand 1492 states and 2433 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:20,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:20,467 INFO L93 Difference]: Finished difference Result 3820 states and 6218 transitions. [2024-11-28 03:41:20,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:41:20,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 607 [2024-11-28 03:41:20,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:20,484 INFO L225 Difference]: With dead ends: 3820 [2024-11-28 03:41:20,484 INFO L226 Difference]: Without dead ends: 2669 [2024-11-28 03:41:20,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:20,488 INFO L435 NwaCegarLoop]: 734 mSDtfsCounter, 374 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:20,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1296 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:41:20,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2024-11-28 03:41:20,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 2666. [2024-11-28 03:41:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2666 states, 2359 states have (on average 1.5879610004239084) internal successors, (3746), 2362 states have internal predecessors, (3746), 299 states have call successors, (299), 7 states have call predecessors, (299), 7 states have return successors, (299), 296 states have call predecessors, (299), 299 states have call successors, (299) [2024-11-28 03:41:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 4344 transitions. [2024-11-28 03:41:20,647 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 4344 transitions. Word has length 607 [2024-11-28 03:41:20,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:20,648 INFO L471 AbstractCegarLoop]: Abstraction has 2666 states and 4344 transitions. [2024-11-28 03:41:20,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 4344 transitions. [2024-11-28 03:41:20,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2024-11-28 03:41:20,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:20,655 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:20,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:41:20,655 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:20,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:20,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1643761183, now seen corresponding path program 1 times [2024-11-28 03:41:20,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:20,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818523334] [2024-11-28 03:41:20,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:20,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:41:21,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:21,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818523334] [2024-11-28 03:41:21,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818523334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:21,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:21,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:41:21,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642002453] [2024-11-28 03:41:21,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:21,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:41:21,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:21,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:41:21,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:21,041 INFO L87 Difference]: Start difference. First operand 2666 states and 4344 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:21,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:21,256 INFO L93 Difference]: Finished difference Result 6828 states and 11046 transitions. [2024-11-28 03:41:21,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:41:21,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 607 [2024-11-28 03:41:21,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:21,282 INFO L225 Difference]: With dead ends: 6828 [2024-11-28 03:41:21,282 INFO L226 Difference]: Without dead ends: 4673 [2024-11-28 03:41:21,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:21,289 INFO L435 NwaCegarLoop]: 611 mSDtfsCounter, 531 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:21,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 1176 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:41:21,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4673 states. [2024-11-28 03:41:21,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4673 to 2762. [2024-11-28 03:41:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2762 states, 2455 states have (on average 1.5918533604887983) internal successors, (3908), 2458 states have internal predecessors, (3908), 299 states have call successors, (299), 7 states have call predecessors, (299), 7 states have return successors, (299), 296 states have call predecessors, (299), 299 states have call successors, (299) [2024-11-28 03:41:21,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4506 transitions. [2024-11-28 03:41:21,550 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4506 transitions. Word has length 607 [2024-11-28 03:41:21,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:21,553 INFO L471 AbstractCegarLoop]: Abstraction has 2762 states and 4506 transitions. [2024-11-28 03:41:21,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:21,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4506 transitions. [2024-11-28 03:41:21,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2024-11-28 03:41:21,560 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:21,561 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:21,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:41:21,561 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:21,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:21,562 INFO L85 PathProgramCache]: Analyzing trace with hash 805838947, now seen corresponding path program 1 times [2024-11-28 03:41:21,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:21,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968349474] [2024-11-28 03:41:21,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:21,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:21,916 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:41:21,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:21,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968349474] [2024-11-28 03:41:21,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968349474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:21,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:21,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:41:21,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888952322] [2024-11-28 03:41:21,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:21,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:41:21,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:21,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:41:21,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:21,919 INFO L87 Difference]: Start difference. First operand 2762 states and 4506 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:22,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:22,133 INFO L93 Difference]: Finished difference Result 7204 states and 11702 transitions. [2024-11-28 03:41:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:41:22,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 607 [2024-11-28 03:41:22,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:22,161 INFO L225 Difference]: With dead ends: 7204 [2024-11-28 03:41:22,161 INFO L226 Difference]: Without dead ends: 4949 [2024-11-28 03:41:22,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:22,168 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 560 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:22,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 1556 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:41:22,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2024-11-28 03:41:22,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 3254. [2024-11-28 03:41:22,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3254 states, 2947 states have (on average 1.6172378690193416) internal successors, (4766), 2950 states have internal predecessors, (4766), 299 states have call successors, (299), 7 states have call predecessors, (299), 7 states have return successors, (299), 296 states have call predecessors, (299), 299 states have call successors, (299) [2024-11-28 03:41:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 5364 transitions. [2024-11-28 03:41:22,421 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 5364 transitions. Word has length 607 [2024-11-28 03:41:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:22,423 INFO L471 AbstractCegarLoop]: Abstraction has 3254 states and 5364 transitions. [2024-11-28 03:41:22,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:22,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 5364 transitions. [2024-11-28 03:41:22,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2024-11-28 03:41:22,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:22,432 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:22,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:41:22,433 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:22,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:22,434 INFO L85 PathProgramCache]: Analyzing trace with hash 946387557, now seen corresponding path program 1 times [2024-11-28 03:41:22,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:22,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533578357] [2024-11-28 03:41:22,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:22,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:41:24,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:24,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533578357] [2024-11-28 03:41:24,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533578357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:24,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:24,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:41:24,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565303695] [2024-11-28 03:41:24,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:24,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:24,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:24,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:24,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:41:24,424 INFO L87 Difference]: Start difference. First operand 3254 states and 5364 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:24,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:24,715 INFO L93 Difference]: Finished difference Result 10216 states and 16988 transitions. [2024-11-28 03:41:24,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:41:24,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 607 [2024-11-28 03:41:24,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:24,763 INFO L225 Difference]: With dead ends: 10216 [2024-11-28 03:41:24,763 INFO L226 Difference]: Without dead ends: 7393 [2024-11-28 03:41:24,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:41:24,775 INFO L435 NwaCegarLoop]: 659 mSDtfsCounter, 483 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:24,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 1791 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:41:24,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7393 states. [2024-11-28 03:41:25,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7393 to 6251. [2024-11-28 03:41:25,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6251 states, 5733 states have (on average 1.6101517530088958) internal successors, (9231), 5739 states have internal predecessors, (9231), 506 states have call successors, (506), 11 states have call predecessors, (506), 11 states have return successors, (506), 500 states have call predecessors, (506), 506 states have call successors, (506) [2024-11-28 03:41:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6251 states to 6251 states and 10243 transitions. [2024-11-28 03:41:25,162 INFO L78 Accepts]: Start accepts. Automaton has 6251 states and 10243 transitions. Word has length 607 [2024-11-28 03:41:25,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:25,163 INFO L471 AbstractCegarLoop]: Abstraction has 6251 states and 10243 transitions. [2024-11-28 03:41:25,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:25,170 INFO L276 IsEmpty]: Start isEmpty. Operand 6251 states and 10243 transitions. [2024-11-28 03:41:25,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2024-11-28 03:41:25,179 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:25,180 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:25,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:41:25,180 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:25,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:25,181 INFO L85 PathProgramCache]: Analyzing trace with hash 930868839, now seen corresponding path program 1 times [2024-11-28 03:41:25,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:25,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827510109] [2024-11-28 03:41:25,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:25,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 120 proven. 153 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-28 03:41:28,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:28,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827510109] [2024-11-28 03:41:28,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827510109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:28,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106302341] [2024-11-28 03:41:28,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:28,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:28,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:28,786 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:28,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:41:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:29,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 03:41:29,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8331 proven. 153 refuted. 0 times theorem prover too weak. 8260 trivial. 0 not checked. [2024-11-28 03:41:31,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 120 proven. 153 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-28 03:41:32,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106302341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:32,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:32,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 16 [2024-11-28 03:41:32,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088902177] [2024-11-28 03:41:32,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:32,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:41:32,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:32,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:41:32,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:41:32,930 INFO L87 Difference]: Start difference. First operand 6251 states and 10243 transitions. Second operand has 16 states, 16 states have (on average 18.625) internal successors, (298), 16 states have internal predecessors, (298), 5 states have call successors, (235), 3 states have call predecessors, (235), 6 states have return successors, (236), 5 states have call predecessors, (236), 5 states have call successors, (236) [2024-11-28 03:41:36,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:36,817 INFO L93 Difference]: Finished difference Result 20765 states and 33468 transitions. [2024-11-28 03:41:36,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 03:41:36,819 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.625) internal successors, (298), 16 states have internal predecessors, (298), 5 states have call successors, (235), 3 states have call predecessors, (235), 6 states have return successors, (236), 5 states have call predecessors, (236), 5 states have call successors, (236) Word has length 607 [2024-11-28 03:41:36,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:36,882 INFO L225 Difference]: With dead ends: 20765 [2024-11-28 03:41:36,882 INFO L226 Difference]: Without dead ends: 14725 [2024-11-28 03:41:36,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1248 GetRequests, 1206 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=428, Invalid=1378, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 03:41:36,897 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 5790 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 1550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5923 SdHoareTripleChecker+Valid, 3706 SdHoareTripleChecker+Invalid, 2964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1550 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:36,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5923 Valid, 3706 Invalid, 2964 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1550 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 03:41:36,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14725 states. [2024-11-28 03:41:37,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14725 to 6793. [2024-11-28 03:41:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6793 states, 6276 states have (on average 1.607074569789675) internal successors, (10086), 6282 states have internal predecessors, (10086), 502 states have call successors, (502), 14 states have call predecessors, (502), 14 states have return successors, (502), 496 states have call predecessors, (502), 502 states have call successors, (502) [2024-11-28 03:41:37,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6793 states to 6793 states and 11090 transitions. [2024-11-28 03:41:37,573 INFO L78 Accepts]: Start accepts. Automaton has 6793 states and 11090 transitions. Word has length 607 [2024-11-28 03:41:37,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:37,574 INFO L471 AbstractCegarLoop]: Abstraction has 6793 states and 11090 transitions. [2024-11-28 03:41:37,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.625) internal successors, (298), 16 states have internal predecessors, (298), 5 states have call successors, (235), 3 states have call predecessors, (235), 6 states have return successors, (236), 5 states have call predecessors, (236), 5 states have call successors, (236) [2024-11-28 03:41:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 6793 states and 11090 transitions. [2024-11-28 03:41:37,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2024-11-28 03:41:37,648 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:37,648 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:37,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:41:37,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:41:37,856 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:37,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:37,870 INFO L85 PathProgramCache]: Analyzing trace with hash 980554471, now seen corresponding path program 1 times [2024-11-28 03:41:37,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:37,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014454277] [2024-11-28 03:41:37,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:37,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:41:39,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:39,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014454277] [2024-11-28 03:41:39,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014454277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:39,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:39,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:41:39,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020965483] [2024-11-28 03:41:39,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:39,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:41:39,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:39,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:41:39,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:41:39,914 INFO L87 Difference]: Start difference. First operand 6793 states and 11090 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:40,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:40,888 INFO L93 Difference]: Finished difference Result 18103 states and 28971 transitions. [2024-11-28 03:41:40,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:41:40,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 608 [2024-11-28 03:41:40,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:40,931 INFO L225 Difference]: With dead ends: 18103 [2024-11-28 03:41:40,931 INFO L226 Difference]: Without dead ends: 12657 [2024-11-28 03:41:40,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:41:40,945 INFO L435 NwaCegarLoop]: 667 mSDtfsCounter, 662 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:40,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 2236 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:41:41,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12657 states. [2024-11-28 03:41:41,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12657 to 7045. [2024-11-28 03:41:41,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7045 states, 6528 states have (on average 1.6075367647058822) internal successors, (10494), 6534 states have internal predecessors, (10494), 502 states have call successors, (502), 14 states have call predecessors, (502), 14 states have return successors, (502), 496 states have call predecessors, (502), 502 states have call successors, (502) [2024-11-28 03:41:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 11498 transitions. [2024-11-28 03:41:41,447 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 11498 transitions. Word has length 608 [2024-11-28 03:41:41,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:41,448 INFO L471 AbstractCegarLoop]: Abstraction has 7045 states and 11498 transitions. [2024-11-28 03:41:41,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:41,449 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 11498 transitions. [2024-11-28 03:41:41,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2024-11-28 03:41:41,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:41,458 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:41,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:41:41,458 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:41,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:41,459 INFO L85 PathProgramCache]: Analyzing trace with hash 838148843, now seen corresponding path program 1 times [2024-11-28 03:41:41,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:41,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337083647] [2024-11-28 03:41:41,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:41,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 123 proven. 150 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-28 03:41:43,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:43,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337083647] [2024-11-28 03:41:43,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337083647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:43,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521770303] [2024-11-28 03:41:43,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:43,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:43,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:43,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:43,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:41:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:44,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:41:44,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:45,884 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 7407 proven. 87 refuted. 0 times theorem prover too weak. 9250 trivial. 0 not checked. [2024-11-28 03:41:45,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 186 proven. 87 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-28 03:41:46,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521770303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:46,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:46,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 8] total 18 [2024-11-28 03:41:46,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595429955] [2024-11-28 03:41:46,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:46,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:41:46,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:46,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:41:46,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:41:46,870 INFO L87 Difference]: Start difference. First operand 7045 states and 11498 transitions. Second operand has 18 states, 18 states have (on average 20.88888888888889) internal successors, (376), 18 states have internal predecessors, (376), 5 states have call successors, (234), 3 states have call predecessors, (234), 6 states have return successors, (235), 5 states have call predecessors, (235), 5 states have call successors, (235) [2024-11-28 03:41:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:50,788 INFO L93 Difference]: Finished difference Result 10814 states and 17554 transitions. [2024-11-28 03:41:50,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:41:50,789 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.88888888888889) internal successors, (376), 18 states have internal predecessors, (376), 5 states have call successors, (234), 3 states have call predecessors, (234), 6 states have return successors, (235), 5 states have call predecessors, (235), 5 states have call successors, (235) Word has length 608 [2024-11-28 03:41:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:50,803 INFO L225 Difference]: With dead ends: 10814 [2024-11-28 03:41:50,803 INFO L226 Difference]: Without dead ends: 3955 [2024-11-28 03:41:50,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1204 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=383, Invalid=1423, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 03:41:50,814 INFO L435 NwaCegarLoop]: 640 mSDtfsCounter, 3429 mSDsluCounter, 3429 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 1442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3429 SdHoareTripleChecker+Valid, 4069 SdHoareTripleChecker+Invalid, 4174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1442 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:50,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3429 Valid, 4069 Invalid, 4174 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1442 Valid, 2732 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 03:41:50,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2024-11-28 03:41:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3643. [2024-11-28 03:41:51,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3643 states, 3274 states have (on average 1.5552840562003665) internal successors, (5092), 3276 states have internal predecessors, (5092), 350 states have call successors, (350), 18 states have call predecessors, (350), 18 states have return successors, (350), 348 states have call predecessors, (350), 350 states have call successors, (350) [2024-11-28 03:41:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5792 transitions. [2024-11-28 03:41:51,105 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5792 transitions. Word has length 608 [2024-11-28 03:41:51,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:51,108 INFO L471 AbstractCegarLoop]: Abstraction has 3643 states and 5792 transitions. [2024-11-28 03:41:51,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.88888888888889) internal successors, (376), 18 states have internal predecessors, (376), 5 states have call successors, (234), 3 states have call predecessors, (234), 6 states have return successors, (235), 5 states have call predecessors, (235), 5 states have call successors, (235) [2024-11-28 03:41:51,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5792 transitions. [2024-11-28 03:41:51,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2024-11-28 03:41:51,116 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:51,116 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:51,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:41:51,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 03:41:51,321 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:51,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:51,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1533593282, now seen corresponding path program 1 times [2024-11-28 03:41:51,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:51,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349340178] [2024-11-28 03:41:51,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:51,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:41:51,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:51,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349340178] [2024-11-28 03:41:51,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349340178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:51,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:51,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:41:51,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691447731] [2024-11-28 03:41:51,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:51,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:41:51,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:51,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:41:51,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:51,727 INFO L87 Difference]: Start difference. First operand 3643 states and 5792 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:52,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:52,266 INFO L93 Difference]: Finished difference Result 9927 states and 15742 transitions. [2024-11-28 03:41:52,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:41:52,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 609 [2024-11-28 03:41:52,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:52,288 INFO L225 Difference]: With dead ends: 9927 [2024-11-28 03:41:52,288 INFO L226 Difference]: Without dead ends: 6963 [2024-11-28 03:41:52,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:52,294 INFO L435 NwaCegarLoop]: 1038 mSDtfsCounter, 533 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:52,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 1596 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:41:52,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6963 states. [2024-11-28 03:41:52,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6963 to 4927. [2024-11-28 03:41:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4927 states, 4558 states have (on average 1.57788503729706) internal successors, (7192), 4560 states have internal predecessors, (7192), 350 states have call successors, (350), 18 states have call predecessors, (350), 18 states have return successors, (350), 348 states have call predecessors, (350), 350 states have call successors, (350) [2024-11-28 03:41:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4927 states to 4927 states and 7892 transitions. [2024-11-28 03:41:52,669 INFO L78 Accepts]: Start accepts. Automaton has 4927 states and 7892 transitions. Word has length 609 [2024-11-28 03:41:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:52,670 INFO L471 AbstractCegarLoop]: Abstraction has 4927 states and 7892 transitions. [2024-11-28 03:41:52,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:52,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4927 states and 7892 transitions. [2024-11-28 03:41:52,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2024-11-28 03:41:52,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:52,677 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:52,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:41:52,677 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:52,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:52,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1545220288, now seen corresponding path program 1 times [2024-11-28 03:41:52,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:52,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751238134] [2024-11-28 03:41:52,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:52,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:41:54,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:54,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751238134] [2024-11-28 03:41:54,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751238134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:54,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:54,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:41:54,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512872137] [2024-11-28 03:41:54,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:54,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:54,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:54,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:54,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:41:54,097 INFO L87 Difference]: Start difference. First operand 4927 states and 7892 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:54,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:54,775 INFO L93 Difference]: Finished difference Result 10805 states and 17149 transitions. [2024-11-28 03:41:54,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:41:54,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 609 [2024-11-28 03:41:54,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:54,797 INFO L225 Difference]: With dead ends: 10805 [2024-11-28 03:41:54,797 INFO L226 Difference]: Without dead ends: 6989 [2024-11-28 03:41:54,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:41:54,804 INFO L435 NwaCegarLoop]: 1013 mSDtfsCounter, 1374 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:54,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1374 Valid, 2560 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:41:54,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6989 states. [2024-11-28 03:41:55,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6989 to 4945. [2024-11-28 03:41:55,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4945 states, 4576 states have (on average 1.5782342657342658) internal successors, (7222), 4578 states have internal predecessors, (7222), 350 states have call successors, (350), 18 states have call predecessors, (350), 18 states have return successors, (350), 348 states have call predecessors, (350), 350 states have call successors, (350) [2024-11-28 03:41:55,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4945 states to 4945 states and 7922 transitions. [2024-11-28 03:41:55,264 INFO L78 Accepts]: Start accepts. Automaton has 4945 states and 7922 transitions. Word has length 609 [2024-11-28 03:41:55,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:55,265 INFO L471 AbstractCegarLoop]: Abstraction has 4945 states and 7922 transitions. [2024-11-28 03:41:55,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:55,266 INFO L276 IsEmpty]: Start isEmpty. Operand 4945 states and 7922 transitions. [2024-11-28 03:41:55,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2024-11-28 03:41:55,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:55,272 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:55,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:41:55,273 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:55,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:55,274 INFO L85 PathProgramCache]: Analyzing trace with hash 363237502, now seen corresponding path program 1 times [2024-11-28 03:41:55,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:55,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397988424] [2024-11-28 03:41:55,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:55,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:41:55,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:55,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397988424] [2024-11-28 03:41:55,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397988424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:55,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:55,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:41:55,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063226649] [2024-11-28 03:41:55,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:55,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:41:55,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:55,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:41:55,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:55,640 INFO L87 Difference]: Start difference. First operand 4945 states and 7922 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:55,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:55,996 INFO L93 Difference]: Finished difference Result 13351 states and 21376 transitions. [2024-11-28 03:41:55,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:41:55,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 609 [2024-11-28 03:41:55,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:56,020 INFO L225 Difference]: With dead ends: 13351 [2024-11-28 03:41:56,020 INFO L226 Difference]: Without dead ends: 8667 [2024-11-28 03:41:56,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:56,028 INFO L435 NwaCegarLoop]: 665 mSDtfsCounter, 387 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:56,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1224 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:41:56,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8667 states. [2024-11-28 03:41:56,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8667 to 8663. [2024-11-28 03:41:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8663 states, 8115 states have (on average 1.5775723967960567) internal successors, (12802), 8121 states have internal predecessors, (12802), 518 states have call successors, (518), 29 states have call predecessors, (518), 29 states have return successors, (518), 512 states have call predecessors, (518), 518 states have call successors, (518) [2024-11-28 03:41:56,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8663 states to 8663 states and 13838 transitions. [2024-11-28 03:41:56,591 INFO L78 Accepts]: Start accepts. Automaton has 8663 states and 13838 transitions. Word has length 609 [2024-11-28 03:41:56,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:56,596 INFO L471 AbstractCegarLoop]: Abstraction has 8663 states and 13838 transitions. [2024-11-28 03:41:56,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:41:56,596 INFO L276 IsEmpty]: Start isEmpty. Operand 8663 states and 13838 transitions. [2024-11-28 03:41:56,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2024-11-28 03:41:56,604 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:56,605 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:56,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:41:56,605 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:56,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:56,606 INFO L85 PathProgramCache]: Analyzing trace with hash -129388672, now seen corresponding path program 1 times [2024-11-28 03:41:56,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:56,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556699730] [2024-11-28 03:41:56,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:56,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:41:58,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:58,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556699730] [2024-11-28 03:41:58,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556699730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:58,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:58,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:41:58,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366283509] [2024-11-28 03:41:58,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:58,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:41:58,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:58,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:41:58,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:41:58,732 INFO L87 Difference]: Start difference. First operand 8663 states and 13838 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:42:00,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:00,202 INFO L93 Difference]: Finished difference Result 20407 states and 32384 transitions. [2024-11-28 03:42:00,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:42:00,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 609 [2024-11-28 03:42:00,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:00,237 INFO L225 Difference]: With dead ends: 20407 [2024-11-28 03:42:00,237 INFO L226 Difference]: Without dead ends: 13969 [2024-11-28 03:42:00,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:42:00,250 INFO L435 NwaCegarLoop]: 1199 mSDtfsCounter, 730 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:00,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 3042 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:42:00,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13969 states. [2024-11-28 03:42:00,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13969 to 12827. [2024-11-28 03:42:00,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12827 states, 12109 states have (on average 1.572466760260963) internal successors, (19041), 12119 states have internal predecessors, (19041), 678 states have call successors, (678), 39 states have call predecessors, (678), 39 states have return successors, (678), 668 states have call predecessors, (678), 678 states have call successors, (678) [2024-11-28 03:42:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12827 states to 12827 states and 20397 transitions. [2024-11-28 03:42:00,945 INFO L78 Accepts]: Start accepts. Automaton has 12827 states and 20397 transitions. Word has length 609 [2024-11-28 03:42:00,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:00,946 INFO L471 AbstractCegarLoop]: Abstraction has 12827 states and 20397 transitions. [2024-11-28 03:42:00,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:42:00,947 INFO L276 IsEmpty]: Start isEmpty. Operand 12827 states and 20397 transitions. [2024-11-28 03:42:00,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2024-11-28 03:42:00,957 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:00,957 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:00,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:42:00,958 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:00,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:00,958 INFO L85 PathProgramCache]: Analyzing trace with hash 85764164, now seen corresponding path program 1 times [2024-11-28 03:42:00,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:00,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409476780] [2024-11-28 03:42:00,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:00,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:42:02,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:02,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409476780] [2024-11-28 03:42:02,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409476780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:42:02,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:42:02,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:42:02,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561946195] [2024-11-28 03:42:02,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:42:02,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:42:02,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:02,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:42:02,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:42:02,478 INFO L87 Difference]: Start difference. First operand 12827 states and 20397 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:42:03,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:03,755 INFO L93 Difference]: Finished difference Result 28432 states and 45296 transitions. [2024-11-28 03:42:03,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:42:03,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 609 [2024-11-28 03:42:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:03,789 INFO L225 Difference]: With dead ends: 28432 [2024-11-28 03:42:03,790 INFO L226 Difference]: Without dead ends: 17001 [2024-11-28 03:42:03,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:42:03,802 INFO L435 NwaCegarLoop]: 1051 mSDtfsCounter, 699 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:03,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 2784 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:42:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17001 states. [2024-11-28 03:42:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17001 to 12667. [2024-11-28 03:42:04,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12667 states, 12171 states have (on average 1.605291266124394) internal successors, (19538), 12175 states have internal predecessors, (19538), 456 states have call successors, (456), 39 states have call predecessors, (456), 39 states have return successors, (456), 452 states have call predecessors, (456), 456 states have call successors, (456) [2024-11-28 03:42:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12667 states to 12667 states and 20450 transitions. [2024-11-28 03:42:04,341 INFO L78 Accepts]: Start accepts. Automaton has 12667 states and 20450 transitions. Word has length 609 [2024-11-28 03:42:04,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:04,341 INFO L471 AbstractCegarLoop]: Abstraction has 12667 states and 20450 transitions. [2024-11-28 03:42:04,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:42:04,342 INFO L276 IsEmpty]: Start isEmpty. Operand 12667 states and 20450 transitions. [2024-11-28 03:42:04,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2024-11-28 03:42:04,351 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:04,351 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:04,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:42:04,351 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:04,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:04,352 INFO L85 PathProgramCache]: Analyzing trace with hash 259993451, now seen corresponding path program 1 times [2024-11-28 03:42:04,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:04,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399849864] [2024-11-28 03:42:04,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:04,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:42:05,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:05,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399849864] [2024-11-28 03:42:05,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399849864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:42:05,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:42:05,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:42:05,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298614074] [2024-11-28 03:42:05,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:42:05,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:42:05,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:05,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:42:05,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:42:05,847 INFO L87 Difference]: Start difference. First operand 12667 states and 20450 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:42:07,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:07,080 INFO L93 Difference]: Finished difference Result 23721 states and 38029 transitions. [2024-11-28 03:42:07,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:42:07,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 609 [2024-11-28 03:42:07,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:07,110 INFO L225 Difference]: With dead ends: 23721 [2024-11-28 03:42:07,110 INFO L226 Difference]: Without dead ends: 14439 [2024-11-28 03:42:07,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:42:07,125 INFO L435 NwaCegarLoop]: 817 mSDtfsCounter, 589 mSDsluCounter, 1705 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:07,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 2522 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:42:07,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14439 states. [2024-11-28 03:42:07,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14439 to 11575. [2024-11-28 03:42:07,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11575 states, 11079 states have (on average 1.5961729397960105) internal successors, (17684), 11083 states have internal predecessors, (17684), 456 states have call successors, (456), 39 states have call predecessors, (456), 39 states have return successors, (456), 452 states have call predecessors, (456), 456 states have call successors, (456) [2024-11-28 03:42:07,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11575 states to 11575 states and 18596 transitions. [2024-11-28 03:42:07,853 INFO L78 Accepts]: Start accepts. Automaton has 11575 states and 18596 transitions. Word has length 609 [2024-11-28 03:42:07,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:07,854 INFO L471 AbstractCegarLoop]: Abstraction has 11575 states and 18596 transitions. [2024-11-28 03:42:07,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:42:07,854 INFO L276 IsEmpty]: Start isEmpty. Operand 11575 states and 18596 transitions. [2024-11-28 03:42:07,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2024-11-28 03:42:07,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:07,862 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:07,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:42:07,863 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:07,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:07,864 INFO L85 PathProgramCache]: Analyzing trace with hash 508139945, now seen corresponding path program 1 times [2024-11-28 03:42:07,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:07,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481322314] [2024-11-28 03:42:07,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:07,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-28 03:42:08,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:08,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481322314] [2024-11-28 03:42:08,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481322314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:42:08,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:42:08,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:42:08,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826019131] [2024-11-28 03:42:08,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:42:08,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:42:08,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:08,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:42:08,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:42:08,875 INFO L87 Difference]: Start difference. First operand 11575 states and 18596 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:42:09,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:09,895 INFO L93 Difference]: Finished difference Result 21457 states and 34193 transitions. [2024-11-28 03:42:09,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:42:09,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 609 [2024-11-28 03:42:09,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:09,918 INFO L225 Difference]: With dead ends: 21457 [2024-11-28 03:42:09,918 INFO L226 Difference]: Without dead ends: 13031 [2024-11-28 03:42:09,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:42:09,928 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 683 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:09,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 2152 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:42:09,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13031 states. [2024-11-28 03:42:10,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13031 to 10291. [2024-11-28 03:42:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10291 states, 9795 states have (on average 1.5830525778458397) internal successors, (15506), 9799 states have internal predecessors, (15506), 456 states have call successors, (456), 39 states have call predecessors, (456), 39 states have return successors, (456), 452 states have call predecessors, (456), 456 states have call successors, (456) [2024-11-28 03:42:10,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10291 states to 10291 states and 16418 transitions. [2024-11-28 03:42:10,482 INFO L78 Accepts]: Start accepts. Automaton has 10291 states and 16418 transitions. Word has length 609 [2024-11-28 03:42:10,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:10,484 INFO L471 AbstractCegarLoop]: Abstraction has 10291 states and 16418 transitions. [2024-11-28 03:42:10,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2024-11-28 03:42:10,484 INFO L276 IsEmpty]: Start isEmpty. Operand 10291 states and 16418 transitions. [2024-11-28 03:42:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2024-11-28 03:42:10,492 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:10,493 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:10,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:42:10,493 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:10,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:10,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1013262005, now seen corresponding path program 1 times [2024-11-28 03:42:10,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:10,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409256979] [2024-11-28 03:42:10,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:10,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:12,983 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 6 proven. 267 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-28 03:42:12,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:12,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409256979] [2024-11-28 03:42:12,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409256979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:12,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392905249] [2024-11-28 03:42:12,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:12,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:12,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:12,986 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:12,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:42:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:13,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:42:13,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 6111 proven. 63 refuted. 0 times theorem prover too weak. 10570 trivial. 0 not checked. [2024-11-28 03:42:14,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 210 proven. 63 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-28 03:42:14,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392905249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:14,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:14,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-11-28 03:42:14,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075011205] [2024-11-28 03:42:14,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:14,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:42:14,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:14,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:42:14,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:42:14,657 INFO L87 Difference]: Start difference. First operand 10291 states and 16418 transitions. Second operand has 10 states, 10 states have (on average 27.6) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (202), 2 states have call predecessors, (202), 4 states have return successors, (204), 4 states have call predecessors, (204), 4 states have call successors, (204) [2024-11-28 03:42:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:16,551 INFO L93 Difference]: Finished difference Result 20231 states and 32287 transitions. [2024-11-28 03:42:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:42:16,552 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 27.6) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (202), 2 states have call predecessors, (202), 4 states have return successors, (204), 4 states have call predecessors, (204), 4 states have call successors, (204) Word has length 610 [2024-11-28 03:42:16,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:16,569 INFO L225 Difference]: With dead ends: 20231 [2024-11-28 03:42:16,569 INFO L226 Difference]: Without dead ends: 10434 [2024-11-28 03:42:16,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1236 GetRequests, 1218 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:42:16,579 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 1403 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:16,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 1557 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:42:16,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10434 states. [2024-11-28 03:42:17,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10434 to 10366. [2024-11-28 03:42:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10366 states, 9860 states have (on average 1.5705882352941176) internal successors, (15486), 9864 states have internal predecessors, (15486), 456 states have call successors, (456), 49 states have call predecessors, (456), 49 states have return successors, (456), 452 states have call predecessors, (456), 456 states have call successors, (456) [2024-11-28 03:42:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10366 states to 10366 states and 16398 transitions. [2024-11-28 03:42:17,115 INFO L78 Accepts]: Start accepts. Automaton has 10366 states and 16398 transitions. Word has length 610 [2024-11-28 03:42:17,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:17,116 INFO L471 AbstractCegarLoop]: Abstraction has 10366 states and 16398 transitions. [2024-11-28 03:42:17,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.6) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (202), 2 states have call predecessors, (202), 4 states have return successors, (204), 4 states have call predecessors, (204), 4 states have call successors, (204) [2024-11-28 03:42:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 10366 states and 16398 transitions. [2024-11-28 03:42:17,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2024-11-28 03:42:17,124 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:17,124 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:17,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:42:17,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:17,325 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:17,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:17,326 INFO L85 PathProgramCache]: Analyzing trace with hash 227401070, now seen corresponding path program 1 times [2024-11-28 03:42:17,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:17,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518986973] [2024-11-28 03:42:17,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:17,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 453 proven. 603 refuted. 0 times theorem prover too weak. 15688 trivial. 0 not checked. [2024-11-28 03:42:20,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:20,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518986973] [2024-11-28 03:42:20,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518986973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:20,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935534972] [2024-11-28 03:42:20,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:20,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:20,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:20,266 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:20,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:42:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:20,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 03:42:20,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 9205 proven. 573 refuted. 0 times theorem prover too weak. 6966 trivial. 0 not checked. [2024-11-28 03:42:23,974 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:25,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 228 proven. 582 refuted. 0 times theorem prover too weak. 15934 trivial. 0 not checked. [2024-11-28 03:42:25,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935534972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:25,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:25,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 27 [2024-11-28 03:42:25,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994686986] [2024-11-28 03:42:25,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:25,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 03:42:25,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:25,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 03:42:25,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:42:25,093 INFO L87 Difference]: Start difference. First operand 10366 states and 16398 transitions. Second operand has 27 states, 27 states have (on average 12.0) internal successors, (324), 27 states have internal predecessors, (324), 11 states have call successors, (252), 4 states have call predecessors, (252), 10 states have return successors, (254), 11 states have call predecessors, (254), 11 states have call successors, (254) [2024-11-28 03:42:29,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:29,973 INFO L93 Difference]: Finished difference Result 30724 states and 48271 transitions. [2024-11-28 03:42:29,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-28 03:42:29,974 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 12.0) internal successors, (324), 27 states have internal predecessors, (324), 11 states have call successors, (252), 4 states have call predecessors, (252), 10 states have return successors, (254), 11 states have call predecessors, (254), 11 states have call successors, (254) Word has length 610 [2024-11-28 03:42:29,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:30,009 INFO L225 Difference]: With dead ends: 30724 [2024-11-28 03:42:30,010 INFO L226 Difference]: Without dead ends: 20654 [2024-11-28 03:42:30,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1291 GetRequests, 1215 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1422, Invalid=4584, Unknown=0, NotChecked=0, Total=6006 [2024-11-28 03:42:30,026 INFO L435 NwaCegarLoop]: 593 mSDtfsCounter, 3749 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 1312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3749 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1312 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:30,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3749 Valid, 2974 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1312 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 03:42:30,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20654 states. [2024-11-28 03:42:31,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20654 to 20394. [2024-11-28 03:42:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20394 states, 19493 states have (on average 1.5617401118350176) internal successors, (30443), 19503 states have internal predecessors, (30443), 746 states have call successors, (746), 154 states have call predecessors, (746), 154 states have return successors, (746), 736 states have call predecessors, (746), 746 states have call successors, (746) [2024-11-28 03:42:31,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20394 states to 20394 states and 31935 transitions. [2024-11-28 03:42:31,245 INFO L78 Accepts]: Start accepts. Automaton has 20394 states and 31935 transitions. Word has length 610 [2024-11-28 03:42:31,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:31,245 INFO L471 AbstractCegarLoop]: Abstraction has 20394 states and 31935 transitions. [2024-11-28 03:42:31,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 12.0) internal successors, (324), 27 states have internal predecessors, (324), 11 states have call successors, (252), 4 states have call predecessors, (252), 10 states have return successors, (254), 11 states have call predecessors, (254), 11 states have call successors, (254) [2024-11-28 03:42:31,246 INFO L276 IsEmpty]: Start isEmpty. Operand 20394 states and 31935 transitions. [2024-11-28 03:42:31,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2024-11-28 03:42:31,254 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:31,255 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:31,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:42:31,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:31,455 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:31,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:31,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1490762130, now seen corresponding path program 1 times [2024-11-28 03:42:31,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:31,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259023900] [2024-11-28 03:42:31,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:31,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:37,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 207 proven. 333 refuted. 0 times theorem prover too weak. 16204 trivial. 0 not checked. [2024-11-28 03:42:37,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:37,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259023900] [2024-11-28 03:42:37,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259023900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:37,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336565459] [2024-11-28 03:42:37,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:37,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:37,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:37,643 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:37,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:42:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:38,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 03:42:38,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 11048 proven. 582 refuted. 0 times theorem prover too weak. 5114 trivial. 0 not checked. [2024-11-28 03:42:45,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:54,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336565459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:54,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:42:54,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 24] total 30 [2024-11-28 03:42:54,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318857261] [2024-11-28 03:42:54,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:54,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 03:42:54,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:54,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 03:42:54,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 03:42:54,555 INFO L87 Difference]: Start difference. First operand 20394 states and 31935 transitions. Second operand has 30 states, 30 states have (on average 9.933333333333334) internal successors, (298), 27 states have internal predecessors, (298), 10 states have call successors, (184), 8 states have call predecessors, (184), 11 states have return successors, (184), 10 states have call predecessors, (184), 10 states have call successors, (184) [2024-11-28 03:43:06,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:06,802 INFO L93 Difference]: Finished difference Result 65971 states and 101300 transitions. [2024-11-28 03:43:06,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-28 03:43:06,803 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.933333333333334) internal successors, (298), 27 states have internal predecessors, (298), 10 states have call successors, (184), 8 states have call predecessors, (184), 11 states have return successors, (184), 10 states have call predecessors, (184), 10 states have call successors, (184) Word has length 611 [2024-11-28 03:43:06,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:06,861 INFO L225 Difference]: With dead ends: 65971 [2024-11-28 03:43:06,861 INFO L226 Difference]: Without dead ends: 45834 [2024-11-28 03:43:06,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3092 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1427, Invalid=8275, Unknown=0, NotChecked=0, Total=9702 [2024-11-28 03:43:06,894 INFO L435 NwaCegarLoop]: 629 mSDtfsCounter, 5163 mSDsluCounter, 5287 mSDsCounter, 0 mSdLazyCounter, 4158 mSolverCounterSat, 1760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5164 SdHoareTripleChecker+Valid, 5916 SdHoareTripleChecker+Invalid, 5918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1760 IncrementalHoareTripleChecker+Valid, 4158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:06,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5164 Valid, 5916 Invalid, 5918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1760 Valid, 4158 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-28 03:43:06,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45834 states. [2024-11-28 03:43:09,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45834 to 32718. [2024-11-28 03:43:09,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32718 states, 31308 states have (on average 1.5376900472722628) internal successors, (48142), 31342 states have internal predecessors, (48142), 1178 states have call successors, (1178), 231 states have call predecessors, (1178), 231 states have return successors, (1178), 1144 states have call predecessors, (1178), 1178 states have call successors, (1178) [2024-11-28 03:43:09,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32718 states to 32718 states and 50498 transitions. [2024-11-28 03:43:09,108 INFO L78 Accepts]: Start accepts. Automaton has 32718 states and 50498 transitions. Word has length 611 [2024-11-28 03:43:09,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:09,109 INFO L471 AbstractCegarLoop]: Abstraction has 32718 states and 50498 transitions. [2024-11-28 03:43:09,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.933333333333334) internal successors, (298), 27 states have internal predecessors, (298), 10 states have call successors, (184), 8 states have call predecessors, (184), 11 states have return successors, (184), 10 states have call predecessors, (184), 10 states have call successors, (184) [2024-11-28 03:43:09,109 INFO L276 IsEmpty]: Start isEmpty. Operand 32718 states and 50498 transitions. [2024-11-28 03:43:09,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2024-11-28 03:43:09,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:09,132 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:09,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:43:09,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:09,332 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:09,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:09,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1912421846, now seen corresponding path program 1 times [2024-11-28 03:43:09,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:09,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236419237] [2024-11-28 03:43:09,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:43:09,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 573 proven. 483 refuted. 0 times theorem prover too weak. 15688 trivial. 0 not checked. [2024-11-28 03:43:15,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:15,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236419237] [2024-11-28 03:43:15,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236419237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:15,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145906574] [2024-11-28 03:43:15,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:43:15,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:15,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:15,632 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:15,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:43:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:16,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 03:43:16,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 10878 proven. 321 refuted. 0 times theorem prover too weak. 5545 trivial. 0 not checked. [2024-11-28 03:43:18,882 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 480 proven. 330 refuted. 0 times theorem prover too weak. 15934 trivial. 0 not checked. [2024-11-28 03:43:21,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145906574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:21,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:21,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 41 [2024-11-28 03:43:21,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514389757] [2024-11-28 03:43:21,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:21,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 03:43:21,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:21,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 03:43:21,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1394, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:43:21,178 INFO L87 Difference]: Start difference. First operand 32718 states and 50498 transitions. Second operand has 41 states, 37 states have (on average 10.027027027027026) internal successors, (371), 38 states have internal predecessors, (371), 15 states have call successors, (250), 5 states have call predecessors, (250), 10 states have return successors, (250), 12 states have call predecessors, (250), 15 states have call successors, (250) [2024-11-28 03:44:00,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:00,042 INFO L93 Difference]: Finished difference Result 153652 states and 234019 transitions. [2024-11-28 03:44:00,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2024-11-28 03:44:00,043 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 10.027027027027026) internal successors, (371), 38 states have internal predecessors, (371), 15 states have call successors, (250), 5 states have call predecessors, (250), 10 states have return successors, (250), 12 states have call predecessors, (250), 15 states have call successors, (250) Word has length 612 [2024-11-28 03:44:00,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:00,244 INFO L225 Difference]: With dead ends: 153652 [2024-11-28 03:44:00,244 INFO L226 Difference]: Without dead ends: 128120 [2024-11-28 03:44:00,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1441 GetRequests, 1243 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15438 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=7858, Invalid=31942, Unknown=0, NotChecked=0, Total=39800 [2024-11-28 03:44:00,281 INFO L435 NwaCegarLoop]: 1208 mSDtfsCounter, 10828 mSDsluCounter, 14135 mSDsCounter, 0 mSdLazyCounter, 10525 mSolverCounterSat, 4078 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10854 SdHoareTripleChecker+Valid, 15343 SdHoareTripleChecker+Invalid, 14603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4078 IncrementalHoareTripleChecker+Valid, 10525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:00,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10854 Valid, 15343 Invalid, 14603 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4078 Valid, 10525 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time] [2024-11-28 03:44:00,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128120 states. [2024-11-28 03:44:03,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128120 to 51738. [2024-11-28 03:44:03,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51738 states, 50271 states have (on average 1.5528038033856497) internal successors, (78061), 50305 states have internal predecessors, (78061), 1178 states have call successors, (1178), 288 states have call predecessors, (1178), 288 states have return successors, (1178), 1144 states have call predecessors, (1178), 1178 states have call successors, (1178) [2024-11-28 03:44:03,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51738 states to 51738 states and 80417 transitions. [2024-11-28 03:44:03,355 INFO L78 Accepts]: Start accepts. Automaton has 51738 states and 80417 transitions. Word has length 612 [2024-11-28 03:44:03,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:03,355 INFO L471 AbstractCegarLoop]: Abstraction has 51738 states and 80417 transitions. [2024-11-28 03:44:03,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 10.027027027027026) internal successors, (371), 38 states have internal predecessors, (371), 15 states have call successors, (250), 5 states have call predecessors, (250), 10 states have return successors, (250), 12 states have call predecessors, (250), 15 states have call successors, (250) [2024-11-28 03:44:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand 51738 states and 80417 transitions. [2024-11-28 03:44:03,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2024-11-28 03:44:03,387 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:03,387 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:03,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:44:03,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:03,592 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:03,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:03,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2114245780, now seen corresponding path program 1 times [2024-11-28 03:44:03,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:03,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602889622] [2024-11-28 03:44:03,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:03,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 612 proven. 444 refuted. 0 times theorem prover too weak. 15688 trivial. 0 not checked. [2024-11-28 03:44:07,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:07,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602889622] [2024-11-28 03:44:07,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602889622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:07,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015952374] [2024-11-28 03:44:07,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:07,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:07,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:07,268 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:07,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca8caa6a-856f-4ad2-b1bd-4876d8db2e17/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:44:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:07,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-28 03:44:07,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 13120 proven. 975 refuted. 0 times theorem prover too weak. 2649 trivial. 0 not checked. [2024-11-28 03:44:17,007 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 216 proven. 57 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2024-11-28 03:44:25,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015952374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:25,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:25,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 31, 9] total 46 [2024-11-28 03:44:25,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677831060] [2024-11-28 03:44:25,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:25,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-28 03:44:25,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:25,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-28 03:44:25,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1696, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 03:44:25,971 INFO L87 Difference]: Start difference. First operand 51738 states and 80417 transitions. Second operand has 46 states, 45 states have (on average 8.0) internal successors, (360), 43 states have internal predecessors, (360), 16 states have call successors, (241), 10 states have call predecessors, (241), 16 states have return successors, (243), 16 states have call predecessors, (243), 16 states have call successors, (243)