./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8f54012f988f8b18e3a56958a20c5d2f68df7899121416cbc3449d3f0665a6c5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:38:54,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:38:54,111 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:38:54,118 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:38:54,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:38:54,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:38:54,149 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:38:54,149 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:38:54,150 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:38:54,150 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:38:54,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:38:54,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:38:54,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:38:54,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:38:54,152 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:38:54,152 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:38:54,152 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:38:54,152 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:38:54,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:38:54,153 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:38:54,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:38:54,153 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:38:54,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:38:54,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:38:54,153 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:38:54,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:38:54,153 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:38:54,154 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:38:54,154 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:38:54,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:38:54,154 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:38:54,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:38:54,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:38:54,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:38:54,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:38:54,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:38:54,155 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:38:54,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:38:54,155 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:38:54,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:38:54,158 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:38:54,158 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:38:54,158 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:38:54,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:38:54,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:38:54,159 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:38:54,159 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:38:54,159 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:38:54,159 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_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f54012f988f8b18e3a56958a20c5d2f68df7899121416cbc3449d3f0665a6c5 [2024-11-23 23:38:54,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:38:54,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:38:54,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:38:54,579 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:38:54,580 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:38:54,582 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/array-programs/partial_mod_count_limited_1.c [2024-11-23 23:38:57,881 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/data/a7a3865ca/1bbcae0d56824889be81d43de35f7929/FLAG98bdff9bf [2024-11-23 23:38:58,217 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:38:58,218 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/sv-benchmarks/c/array-programs/partial_mod_count_limited_1.c [2024-11-23 23:38:58,230 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/data/a7a3865ca/1bbcae0d56824889be81d43de35f7929/FLAG98bdff9bf [2024-11-23 23:38:58,261 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/data/a7a3865ca/1bbcae0d56824889be81d43de35f7929 [2024-11-23 23:38:58,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:38:58,269 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:38:58,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:38:58,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:38:58,279 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:38:58,280 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:38:58" (1/1) ... [2024-11-23 23:38:58,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a4e9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58, skipping insertion in model container [2024-11-23 23:38:58,281 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:38:58" (1/1) ... [2024-11-23 23:38:58,304 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:38:58,507 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_ef84ebd8-20c9-4638-9381-d6cca222e7fd/sv-benchmarks/c/array-programs/partial_mod_count_limited_1.c[331,344] [2024-11-23 23:38:58,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:38:58,557 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:38:58,571 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_ef84ebd8-20c9-4638-9381-d6cca222e7fd/sv-benchmarks/c/array-programs/partial_mod_count_limited_1.c[331,344] [2024-11-23 23:38:58,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:38:58,610 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:38:58,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58 WrapperNode [2024-11-23 23:38:58,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:38:58,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:38:58,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:38:58,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:38:58,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58" (1/1) ... [2024-11-23 23:38:58,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58" (1/1) ... [2024-11-23 23:38:58,652 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-11-23 23:38:58,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:38:58,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:38:58,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:38:58,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:38:58,664 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58" (1/1) ... [2024-11-23 23:38:58,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58" (1/1) ... [2024-11-23 23:38:58,672 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58" (1/1) ... [2024-11-23 23:38:58,694 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-23 23:38:58,695 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58" (1/1) ... [2024-11-23 23:38:58,695 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58" (1/1) ... [2024-11-23 23:38:58,702 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58" (1/1) ... [2024-11-23 23:38:58,707 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58" (1/1) ... [2024-11-23 23:38:58,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58" (1/1) ... [2024-11-23 23:38:58,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58" (1/1) ... [2024-11-23 23:38:58,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58" (1/1) ... [2024-11-23 23:38:58,717 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:38:58,722 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:38:58,722 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:38:58,722 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:38:58,723 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58" (1/1) ... [2024-11-23 23:38:58,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:38:58,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:38:58,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:38:58,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:38:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:38:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:38:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:38:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:38:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:38:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:38:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:38:58,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:38:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:38:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:38:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:38:58,880 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:38:58,883 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:38:59,066 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-23 23:38:59,067 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:38:59,080 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:38:59,081 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:38:59,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:38:59 BoogieIcfgContainer [2024-11-23 23:38:59,083 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:38:59,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:38:59,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:38:59,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:38:59,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:38:58" (1/3) ... [2024-11-23 23:38:59,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b363b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:38:59, skipping insertion in model container [2024-11-23 23:38:59,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:38:58" (2/3) ... [2024-11-23 23:38:59,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b363b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:38:59, skipping insertion in model container [2024-11-23 23:38:59,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:38:59" (3/3) ... [2024-11-23 23:38:59,099 INFO L128 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_1.c [2024-11-23 23:38:59,120 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:38:59,122 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG partial_mod_count_limited_1.c that has 1 procedures, 23 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-23 23:38:59,207 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:38:59,226 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;@73a0c563, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:38:59,227 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:38:59,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:38:59,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-23 23:38:59,241 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:38:59,242 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:38:59,243 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:38:59,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:38:59,250 INFO L85 PathProgramCache]: Analyzing trace with hash -345222235, now seen corresponding path program 1 times [2024-11-23 23:38:59,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:38:59,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253874999] [2024-11-23 23:38:59,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:38:59,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:38:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:38:59,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:38:59,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:38:59,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253874999] [2024-11-23 23:38:59,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253874999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:38:59,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:38:59,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:38:59,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344682926] [2024-11-23 23:38:59,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:38:59,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:38:59,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:38:59,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:38:59,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:38:59,545 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:38:59,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:38:59,564 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2024-11-23 23:38:59,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:38:59,567 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-23 23:38:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:38:59,576 INFO L225 Difference]: With dead ends: 43 [2024-11-23 23:38:59,579 INFO L226 Difference]: Without dead ends: 19 [2024-11-23 23:38:59,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:38:59,588 INFO L435 NwaCegarLoop]: 27 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, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:38:59,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:38:59,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-23 23:38:59,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-23 23:38:59,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:38:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-23 23:38:59,635 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2024-11-23 23:38:59,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:38:59,636 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-23 23:38:59,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:38:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-23 23:38:59,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-23 23:38:59,639 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:38:59,639 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:38:59,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:38:59,640 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:38:59,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:38:59,643 INFO L85 PathProgramCache]: Analyzing trace with hash -738249245, now seen corresponding path program 1 times [2024-11-23 23:38:59,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:38:59,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841527904] [2024-11-23 23:38:59,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:38:59,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:38:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:38:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:38:59,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:38:59,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841527904] [2024-11-23 23:38:59,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841527904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:38:59,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:38:59,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:38:59,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253021745] [2024-11-23 23:38:59,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:38:59,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:38:59,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:38:59,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:38:59,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:38:59,969 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:00,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:00,096 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2024-11-23 23:39:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:39:00,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-23 23:39:00,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:00,099 INFO L225 Difference]: With dead ends: 42 [2024-11-23 23:39:00,099 INFO L226 Difference]: Without dead ends: 33 [2024-11-23 23:39:00,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:39:00,100 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 35 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:00,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 21 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:39:00,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-23 23:39:00,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 20. [2024-11-23 23:39:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-23 23:39:00,107 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 12 [2024-11-23 23:39:00,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:00,107 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-23 23:39:00,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:00,107 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-23 23:39:00,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-23 23:39:00,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:00,108 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:00,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:39:00,108 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:00,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:00,109 INFO L85 PathProgramCache]: Analyzing trace with hash 458588015, now seen corresponding path program 1 times [2024-11-23 23:39:00,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:00,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281777400] [2024-11-23 23:39:00,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:00,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:00,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:00,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281777400] [2024-11-23 23:39:00,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281777400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:00,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015496007] [2024-11-23 23:39:00,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:00,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:00,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:00,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:00,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:39:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:00,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:39:00,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:00,693 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:00,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:00,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015496007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:00,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:00,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-23 23:39:00,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448582512] [2024-11-23 23:39:00,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:00,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:39:00,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:00,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:39:00,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:39:00,797 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:01,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:01,000 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2024-11-23 23:39:01,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:39:01,002 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-23 23:39:01,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:01,003 INFO L225 Difference]: With dead ends: 72 [2024-11-23 23:39:01,003 INFO L226 Difference]: Without dead ends: 63 [2024-11-23 23:39:01,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:39:01,004 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 158 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:01,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 46 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:39:01,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-23 23:39:01,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 38. [2024-11-23 23:39:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:01,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2024-11-23 23:39:01,017 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 18 [2024-11-23 23:39:01,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:01,017 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2024-11-23 23:39:01,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:01,018 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2024-11-23 23:39:01,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-23 23:39:01,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:01,019 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:01,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:39:01,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-23 23:39:01,220 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:01,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:01,220 INFO L85 PathProgramCache]: Analyzing trace with hash -826980845, now seen corresponding path program 2 times [2024-11-23 23:39:01,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:01,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182370019] [2024-11-23 23:39:01,221 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:39:01,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:01,312 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 23:39:01,314 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-23 23:39:01,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:01,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182370019] [2024-11-23 23:39:01,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182370019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:01,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:01,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:39:01,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487132898] [2024-11-23 23:39:01,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:01,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:39:01,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:01,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:39:01,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:39:01,944 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:02,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:02,130 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2024-11-23 23:39:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:39:02,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-23 23:39:02,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:02,132 INFO L225 Difference]: With dead ends: 52 [2024-11-23 23:39:02,132 INFO L226 Difference]: Without dead ends: 50 [2024-11-23 23:39:02,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:39:02,133 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:02,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 40 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:39:02,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-23 23:39:02,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-23 23:39:02,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2024-11-23 23:39:02,161 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 36 [2024-11-23 23:39:02,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:02,163 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2024-11-23 23:39:02,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2024-11-23 23:39:02,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-23 23:39:02,164 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:02,164 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:02,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:39:02,165 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:02,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:02,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1882354749, now seen corresponding path program 1 times [2024-11-23 23:39:02,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:02,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953060901] [2024-11-23 23:39:02,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:02,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:39:02,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:02,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953060901] [2024-11-23 23:39:02,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953060901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:02,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903148794] [2024-11-23 23:39:02,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:02,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:02,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:02,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:02,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:39:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:02,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:39:02,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:39:03,086 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:39:03,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903148794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:03,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:03,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-23 23:39:03,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844978906] [2024-11-23 23:39:03,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:03,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 23:39:03,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:03,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 23:39:03,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:39:03,335 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 18 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:03,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:03,873 INFO L93 Difference]: Finished difference Result 276 states and 333 transitions. [2024-11-23 23:39:03,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:39:03,874 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 18 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-23 23:39:03,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:03,875 INFO L225 Difference]: With dead ends: 276 [2024-11-23 23:39:03,876 INFO L226 Difference]: Without dead ends: 255 [2024-11-23 23:39:03,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:39:03,881 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 304 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:03,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 118 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:39:03,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-23 23:39:03,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 86. [2024-11-23 23:39:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 85 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2024-11-23 23:39:03,928 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 42 [2024-11-23 23:39:03,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:03,929 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2024-11-23 23:39:03,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 18 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:03,929 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2024-11-23 23:39:03,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-23 23:39:03,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:03,935 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:03,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:39:04,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:04,136 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:04,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:04,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1195690117, now seen corresponding path program 2 times [2024-11-23 23:39:04,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:04,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518200934] [2024-11-23 23:39:04,137 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:39:04,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:04,266 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:39:04,266 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:39:05,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:05,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518200934] [2024-11-23 23:39:05,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518200934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:05,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385526559] [2024-11-23 23:39:05,299 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:39:05,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:05,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:05,301 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:05,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:39:05,509 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:39:05,510 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:05,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 23:39:05,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:39:06,124 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:39:06,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385526559] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:06,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:06,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-23 23:39:06,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246446507] [2024-11-23 23:39:06,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:06,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-23 23:39:06,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:06,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-23 23:39:06,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2024-11-23 23:39:06,716 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand has 37 states, 37 states have (on average 5.4324324324324325) internal successors, (201), 36 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:07,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:07,961 INFO L93 Difference]: Finished difference Result 588 states and 711 transitions. [2024-11-23 23:39:07,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 23:39:07,962 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.4324324324324325) internal successors, (201), 36 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-23 23:39:07,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:07,965 INFO L225 Difference]: With dead ends: 588 [2024-11-23 23:39:07,965 INFO L226 Difference]: Without dead ends: 567 [2024-11-23 23:39:07,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2024-11-23 23:39:07,968 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 1124 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:07,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 241 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:39:07,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2024-11-23 23:39:08,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 158. [2024-11-23 23:39:08,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.3121019108280254) internal successors, (206), 157 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:08,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 206 transitions. [2024-11-23 23:39:08,013 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 206 transitions. Word has length 78 [2024-11-23 23:39:08,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:08,013 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 206 transitions. [2024-11-23 23:39:08,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.4324324324324325) internal successors, (201), 36 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:08,013 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 206 transitions. [2024-11-23 23:39:08,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-23 23:39:08,015 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:08,015 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:08,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 23:39:08,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-23 23:39:08,220 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:08,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:08,220 INFO L85 PathProgramCache]: Analyzing trace with hash 237495573, now seen corresponding path program 3 times [2024-11-23 23:39:08,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:08,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453170196] [2024-11-23 23:39:08,220 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:39:08,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:08,502 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-23 23:39:08,503 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2024-11-23 23:39:10,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:10,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453170196] [2024-11-23 23:39:10,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453170196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:10,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47799413] [2024-11-23 23:39:10,166 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:39:10,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:10,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:10,169 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:10,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:39:10,419 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 23:39:10,420 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:10,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 23:39:10,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2024-11-23 23:39:11,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1413 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2024-11-23 23:39:18,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47799413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:18,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:18,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 8] total 21 [2024-11-23 23:39:18,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099098241] [2024-11-23 23:39:18,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:18,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 23:39:18,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:18,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 23:39:18,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:39:18,200 INFO L87 Difference]: Start difference. First operand 158 states and 206 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:20,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:20,355 INFO L93 Difference]: Finished difference Result 722 states and 953 transitions. [2024-11-23 23:39:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 23:39:20,355 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2024-11-23 23:39:20,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:20,361 INFO L225 Difference]: With dead ends: 722 [2024-11-23 23:39:20,362 INFO L226 Difference]: Without dead ends: 720 [2024-11-23 23:39:20,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=394, Invalid=1088, Unknown=0, NotChecked=0, Total=1482 [2024-11-23 23:39:20,364 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 205 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:20,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 227 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 23:39:20,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-23 23:39:20,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 182. [2024-11-23 23:39:20,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.292817679558011) internal successors, (234), 181 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:20,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 234 transitions. [2024-11-23 23:39:20,441 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 234 transitions. Word has length 150 [2024-11-23 23:39:20,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:20,441 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 234 transitions. [2024-11-23 23:39:20,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:20,442 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 234 transitions. [2024-11-23 23:39:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-23 23:39:20,444 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:20,444 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:20,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 23:39:20,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:20,645 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:20,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:20,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1349126845, now seen corresponding path program 4 times [2024-11-23 23:39:20,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:20,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423829304] [2024-11-23 23:39:20,646 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:39:20,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:20,771 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:39:20,771 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1493 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-23 23:39:23,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:23,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423829304] [2024-11-23 23:39:23,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423829304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:23,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105545436] [2024-11-23 23:39:23,635 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:39:23,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:23,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:23,640 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:23,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:39:25,894 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:39:25,894 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:25,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 23:39:25,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1493 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-23 23:39:26,868 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1493 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-23 23:39:28,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105545436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:28,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:28,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 72 [2024-11-23 23:39:28,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242396933] [2024-11-23 23:39:28,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:28,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-23 23:39:28,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:28,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-23 23:39:28,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2283, Invalid=2973, Unknown=0, NotChecked=0, Total=5256 [2024-11-23 23:39:28,166 INFO L87 Difference]: Start difference. First operand 182 states and 234 transitions. Second operand has 73 states, 73 states have (on average 5.712328767123288) internal successors, (417), 72 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:31,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:31,064 INFO L93 Difference]: Finished difference Result 2240 states and 2665 transitions. [2024-11-23 23:39:31,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-23 23:39:31,065 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 5.712328767123288) internal successors, (417), 72 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2024-11-23 23:39:31,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:31,078 INFO L225 Difference]: With dead ends: 2240 [2024-11-23 23:39:31,078 INFO L226 Difference]: Without dead ends: 2195 [2024-11-23 23:39:31,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3196 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3433, Invalid=5687, Unknown=0, NotChecked=0, Total=9120 [2024-11-23 23:39:31,085 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 2354 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2354 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:31,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2354 Valid, 442 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:39:31,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2024-11-23 23:39:31,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 326. [2024-11-23 23:39:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 1.3107692307692307) internal successors, (426), 325 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:31,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 426 transitions. [2024-11-23 23:39:31,185 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 426 transitions. Word has length 174 [2024-11-23 23:39:31,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:31,186 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 426 transitions. [2024-11-23 23:39:31,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 5.712328767123288) internal successors, (417), 72 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:39:31,186 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 426 transitions. [2024-11-23 23:39:31,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-23 23:39:31,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:31,192 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:31,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:39:31,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:31,393 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:39:31,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:31,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1969271773, now seen corresponding path program 5 times [2024-11-23 23:39:31,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:31,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129497147] [2024-11-23 23:39:31,398 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 23:39:31,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:38,894 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-23 23:39:38,895 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6341 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-23 23:39:46,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:46,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129497147] [2024-11-23 23:39:46,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129497147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:46,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005221147] [2024-11-23 23:39:46,087 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 23:39:46,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:46,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:46,089 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:46,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef84ebd8-20c9-4638-9381-d6cca222e7fd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process