./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd --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 2535b8df62b232497a5d3d6ff06546d8e28bdaf58cbf4426ff971bf84e825948 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:55:34,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:55:34,132 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:55:34,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:55:34,139 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:55:34,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:55:34,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:55:34,168 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:55:34,168 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:55:34,168 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:55:34,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:55:34,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:55:34,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:55:34,170 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:55:34,170 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:55:34,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:55:34,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:55:34,171 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:55:34,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:55:34,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:55:34,171 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:55:34,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:55:34,172 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:55:34,172 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:55:34,172 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:55:34,172 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:55:34,172 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:55:34,172 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:55:34,172 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:55:34,173 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:55:34,173 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:55:34,173 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:55:34,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:55:34,173 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:55:34,173 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:55:34,173 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:55:34,174 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:55:34,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:55:34,175 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:55:34,176 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:55:34,176 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:55:34,176 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:55:34,176 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_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd 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 -> 2535b8df62b232497a5d3d6ff06546d8e28bdaf58cbf4426ff971bf84e825948 [2024-11-13 14:55:34,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:55:34,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:55:34,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:55:34,553 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:55:34,553 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:55:34,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c Unable to find full path for "g++" [2024-11-13 14:55:37,128 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:55:37,442 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:55:37,443 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c [2024-11-13 14:55:37,454 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/data/78dd4cc7d/dd0760b97a7f4fbbaf981e4e912f1f1f/FLAG38c8f89bb [2024-11-13 14:55:37,712 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/data/78dd4cc7d/dd0760b97a7f4fbbaf981e4e912f1f1f [2024-11-13 14:55:37,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:55:37,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:55:37,721 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:55:37,721 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:55:37,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:55:37,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:55:37" (1/1) ... [2024-11-13 14:55:37,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@739c7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:55:37, skipping insertion in model container [2024-11-13 14:55:37,734 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:55:37" (1/1) ... [2024-11-13 14:55:37,754 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:55:37,944 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_06e9bdad-145a-46f0-a1d2-240000f6fe15/sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c[331,344] [2024-11-13 14:55:37,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:55:37,992 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:55:38,004 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_06e9bdad-145a-46f0-a1d2-240000f6fe15/sv-benchmarks/c/array-programs/partial_mod_count_limited_5.c[331,344] [2024-11-13 14:55:38,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:55:38,035 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:55:38,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:55:38 WrapperNode [2024-11-13 14:55:38,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:55:38,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:55:38,038 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:55:38,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:55:38,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:55:38" (1/1) ... [2024-11-13 14:55:38,056 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:55:38" (1/1) ... [2024-11-13 14:55:38,082 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-11-13 14:55:38,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:55:38,085 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:55:38,085 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:55:38,086 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:55:38,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:55:38" (1/1) ... [2024-11-13 14:55:38,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:55:38" (1/1) ... [2024-11-13 14:55:38,101 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:55:38" (1/1) ... [2024-11-13 14:55:38,128 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]. [2024-11-13 14:55:38,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:55:38" (1/1) ... [2024-11-13 14:55:38,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:55:38" (1/1) ... [2024-11-13 14:55:38,137 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:55:38" (1/1) ... [2024-11-13 14:55:38,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:55:38" (1/1) ... [2024-11-13 14:55:38,148 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:55:38" (1/1) ... [2024-11-13 14:55:38,149 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:55:38" (1/1) ... [2024-11-13 14:55:38,156 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:55:38,157 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:55:38,161 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:55:38,161 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:55:38,162 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:55:38" (1/1) ... [2024-11-13 14:55:38,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:55:38,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:55:38,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:55:38,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:55:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:55:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:55:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:55:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:55:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:55:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:55:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:55:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:55:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:55:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:55:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:55:38,387 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:55:38,390 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:55:38,627 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-13 14:55:38,627 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:55:38,640 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:55:38,640 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:55:38,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:55:38 BoogieIcfgContainer [2024-11-13 14:55:38,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:55:38,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:55:38,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:55:38,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:55:38,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:55:37" (1/3) ... [2024-11-13 14:55:38,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e24a30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:55:38, skipping insertion in model container [2024-11-13 14:55:38,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:55:38" (2/3) ... [2024-11-13 14:55:38,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e24a30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:55:38, skipping insertion in model container [2024-11-13 14:55:38,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:55:38" (3/3) ... [2024-11-13 14:55:38,653 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_5.c [2024-11-13 14:55:38,674 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:55:38,678 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG partial_mod_count_limited_5.c that has 1 procedures, 21 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 14:55:38,765 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:55:38,786 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;@52e70a23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:55:38,786 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:55:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 14:55:38,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:38,801 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:38,802 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:38,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:38,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1939796378, now seen corresponding path program 1 times [2024-11-13 14:55:38,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:55:38,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650129866] [2024-11-13 14:55:38,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:38,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:55:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:55:39,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:55:39,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650129866] [2024-11-13 14:55:39,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650129866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:55:39,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:55:39,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:55:39,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762651837] [2024-11-13 14:55:39,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:55:39,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:55:39,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:55:39,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:55:39,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:55:39,122 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:39,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:39,139 INFO L93 Difference]: Finished difference Result 39 states and 54 transitions. [2024-11-13 14:55:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:55:39,142 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-13 14:55:39,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:39,151 INFO L225 Difference]: With dead ends: 39 [2024-11-13 14:55:39,151 INFO L226 Difference]: Without dead ends: 17 [2024-11-13 14:55:39,155 INFO L431 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 [2024-11-13 14:55:39,159 INFO L432 NwaCegarLoop]: 25 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, 25 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 [2024-11-13 14:55:39,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:55:39,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-13 14:55:39,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-13 14:55:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-13 14:55:39,194 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2024-11-13 14:55:39,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:39,194 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-13 14:55:39,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:39,195 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-13 14:55:39,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 14:55:39,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:39,195 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:39,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:55:39,196 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:39,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:39,197 INFO L85 PathProgramCache]: Analyzing trace with hash -54935082, now seen corresponding path program 1 times [2024-11-13 14:55:39,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:55:39,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909880077] [2024-11-13 14:55:39,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:39,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:55:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:55:39,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:55:39,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909880077] [2024-11-13 14:55:39,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909880077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:55:39,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:55:39,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:55:39,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047143519] [2024-11-13 14:55:39,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:55:39,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:55:39,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:55:39,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:55:39,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:55:39,477 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:39,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:39,578 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-11-13 14:55:39,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:55:39,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-13 14:55:39,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:39,581 INFO L225 Difference]: With dead ends: 42 [2024-11-13 14:55:39,581 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 14:55:39,581 INFO L431 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 [2024-11-13 14:55:39,582 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:55:39,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 19 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:55:39,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 14:55:39,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2024-11-13 14:55:39,589 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) [2024-11-13 14:55:39,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-13 14:55:39,590 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2024-11-13 14:55:39,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:39,591 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-13 14:55:39,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:39,591 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-13 14:55:39,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 14:55:39,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:39,592 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:39,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:55:39,592 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:39,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:39,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1485448361, now seen corresponding path program 1 times [2024-11-13 14:55:39,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:55:39,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499028483] [2024-11-13 14:55:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:39,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:55:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:40,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:55:40,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:55:40,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499028483] [2024-11-13 14:55:40,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499028483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:55:40,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:55:40,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:55:40,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565338888] [2024-11-13 14:55:40,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:55:40,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:55:40,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:55:40,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:55:40,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:55:40,122 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:40,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:40,209 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2024-11-13 14:55:40,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:55:40,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-13 14:55:40,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:40,212 INFO L225 Difference]: With dead ends: 42 [2024-11-13 14:55:40,212 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 14:55:40,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:55:40,213 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:55:40,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:55:40,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 14:55:40,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2024-11-13 14:55:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:40,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-13 14:55:40,224 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 16 [2024-11-13 14:55:40,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:40,225 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-13 14:55:40,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:40,225 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-13 14:55:40,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 14:55:40,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:40,225 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:40,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:55:40,226 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:40,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:40,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2129460565, now seen corresponding path program 1 times [2024-11-13 14:55:40,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:55:40,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255781108] [2024-11-13 14:55:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:40,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:55:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:40,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:55:40,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:55:40,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255781108] [2024-11-13 14:55:40,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255781108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:55:40,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393531371] [2024-11-13 14:55:40,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:40,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:40,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:55:40,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:55:40,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:55:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:40,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:55:40,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:55:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:55:40,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:55:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:55:40,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393531371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:55:40,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:55:40,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-13 14:55:40,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348810274] [2024-11-13 14:55:40,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:55:40,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:55:40,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:55:40,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:55:40,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:55:40,700 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:40,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:40,916 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2024-11-13 14:55:40,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:55:40,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 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 16 [2024-11-13 14:55:40,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:40,917 INFO L225 Difference]: With dead ends: 68 [2024-11-13 14:55:40,918 INFO L226 Difference]: Without dead ends: 55 [2024-11-13 14:55:40,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:55:40,920 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 152 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:55:40,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 35 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:55:40,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-13 14:55:40,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 33. [2024-11-13 14:55:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-11-13 14:55:40,935 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 16 [2024-11-13 14:55:40,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:40,936 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-11-13 14:55:40,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:40,936 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-11-13 14:55:40,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 14:55:40,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:40,937 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:40,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:55:41,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:41,138 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:41,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:41,139 INFO L85 PathProgramCache]: Analyzing trace with hash -169738732, now seen corresponding path program 1 times [2024-11-13 14:55:41,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:55:41,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196700646] [2024-11-13 14:55:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:41,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:55:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 14:55:41,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:55:41,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196700646] [2024-11-13 14:55:41,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196700646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:55:41,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771379592] [2024-11-13 14:55:41,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:41,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:41,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:55:41,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:55:41,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:55:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:41,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:55:41,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:55:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:55:42,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:55:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:55:42,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771379592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:55:42,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:55:42,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2024-11-13 14:55:42,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785313472] [2024-11-13 14:55:42,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:55:42,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 14:55:42,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:55:42,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 14:55:42,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:55:42,375 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:43,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:43,239 INFO L93 Difference]: Finished difference Result 162 states and 207 transitions. [2024-11-13 14:55:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 14:55:43,240 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 0 states have call successors, (0), 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 31 [2024-11-13 14:55:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:43,241 INFO L225 Difference]: With dead ends: 162 [2024-11-13 14:55:43,241 INFO L226 Difference]: Without dead ends: 142 [2024-11-13 14:55:43,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=395, Invalid=727, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:55:43,244 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 422 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:55:43,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 117 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:55:43,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-13 14:55:43,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 63. [2024-11-13 14:55:43,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 62 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:43,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2024-11-13 14:55:43,257 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 31 [2024-11-13 14:55:43,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:43,257 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2024-11-13 14:55:43,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:43,258 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2024-11-13 14:55:43,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-13 14:55:43,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:43,259 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:43,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:55:43,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:43,460 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:43,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:43,461 INFO L85 PathProgramCache]: Analyzing trace with hash -287163532, now seen corresponding path program 2 times [2024-11-13 14:55:43,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:55:43,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268540255] [2024-11-13 14:55:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:43,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:55:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-13 14:55:44,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:55:44,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268540255] [2024-11-13 14:55:44,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268540255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:55:44,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:55:44,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:55:44,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267186746] [2024-11-13 14:55:44,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:55:44,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:55:44,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:55:44,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:55:44,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:55:44,391 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) [2024-11-13 14:55:44,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:44,553 INFO L93 Difference]: Finished difference Result 184 states and 236 transitions. [2024-11-13 14:55:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:55:44,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) Word has length 61 [2024-11-13 14:55:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:44,557 INFO L225 Difference]: With dead ends: 184 [2024-11-13 14:55:44,557 INFO L226 Difference]: Without dead ends: 144 [2024-11-13 14:55:44,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:55:44,559 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:55:44,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 45 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:55:44,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-13 14:55:44,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 110. [2024-11-13 14:55:44,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 109 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:44,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2024-11-13 14:55:44,577 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 61 [2024-11-13 14:55:44,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:44,578 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2024-11-13 14:55:44,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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) [2024-11-13 14:55:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2024-11-13 14:55:44,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-13 14:55:44,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:44,580 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:44,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:55:44,580 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:44,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:44,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2132530698, now seen corresponding path program 3 times [2024-11-13 14:55:44,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:55:44,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307734526] [2024-11-13 14:55:44,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:44,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:55:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 133 proven. 26 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-13 14:55:45,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:55:45,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307734526] [2024-11-13 14:55:45,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307734526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:55:45,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442103330] [2024-11-13 14:55:45,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:55:45,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:45,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:55:45,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:55:45,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:55:45,713 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-13 14:55:45,713 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:55:45,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:55:45,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:55:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-13 14:55:46,535 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:55:46,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442103330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:55:46,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:55:46,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2024-11-13 14:55:46,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320631418] [2024-11-13 14:55:46,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:55:46,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:55:46,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:55:46,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:55:46,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:55:46,537 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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) [2024-11-13 14:55:46,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:46,661 INFO L93 Difference]: Finished difference Result 117 states and 144 transitions. [2024-11-13 14:55:46,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:55:46,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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 61 [2024-11-13 14:55:46,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:46,663 INFO L225 Difference]: With dead ends: 117 [2024-11-13 14:55:46,664 INFO L226 Difference]: Without dead ends: 115 [2024-11-13 14:55:46,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:55:46,665 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:55:46,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 32 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:55:46,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-13 14:55:46,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-13 14:55:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.2456140350877194) internal successors, (142), 114 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:46,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 142 transitions. [2024-11-13 14:55:46,687 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 142 transitions. Word has length 61 [2024-11-13 14:55:46,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:46,687 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 142 transitions. [2024-11-13 14:55:46,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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) [2024-11-13 14:55:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 142 transitions. [2024-11-13 14:55:46,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-13 14:55:46,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:46,689 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:46,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:55:46,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 14:55:46,891 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:46,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:46,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2132590280, now seen corresponding path program 1 times [2024-11-13 14:55:46,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:55:46,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499290561] [2024-11-13 14:55:46,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:46,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:55:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:47,689 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 133 proven. 26 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-13 14:55:47,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:55:47,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499290561] [2024-11-13 14:55:47,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499290561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:55:47,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858796708] [2024-11-13 14:55:47,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:47,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:47,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:55:47,694 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:55:47,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:55:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:47,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:55:47,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:55:48,496 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:55:48,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:55:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:55:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858796708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:55:49,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:55:49,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 30 [2024-11-13 14:55:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883883392] [2024-11-13 14:55:49,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:55:49,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 14:55:49,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:55:49,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 14:55:49,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=574, Unknown=0, NotChecked=0, Total=930 [2024-11-13 14:55:49,048 INFO L87 Difference]: Start difference. First operand 115 states and 142 transitions. Second operand has 31 states, 31 states have (on average 4.419354838709677) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:52,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:52,288 INFO L93 Difference]: Finished difference Result 641 states and 825 transitions. [2024-11-13 14:55:52,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-13 14:55:52,290 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.419354838709677) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 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 61 [2024-11-13 14:55:52,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:52,292 INFO L225 Difference]: With dead ends: 641 [2024-11-13 14:55:52,292 INFO L226 Difference]: Without dead ends: 579 [2024-11-13 14:55:52,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2497 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2591, Invalid=4719, Unknown=0, NotChecked=0, Total=7310 [2024-11-13 14:55:52,296 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 749 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:55:52,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 158 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:55:52,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-13 14:55:52,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 160. [2024-11-13 14:55:52,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.2955974842767295) internal successors, (206), 159 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) [2024-11-13 14:55:52,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 206 transitions. [2024-11-13 14:55:52,320 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 206 transitions. Word has length 61 [2024-11-13 14:55:52,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:52,320 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 206 transitions. [2024-11-13 14:55:52,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.419354838709677) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:52,321 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 206 transitions. [2024-11-13 14:55:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-13 14:55:52,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:52,323 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:52,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:55:52,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 14:55:52,527 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:52,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:52,528 INFO L85 PathProgramCache]: Analyzing trace with hash -299816332, now seen corresponding path program 2 times [2024-11-13 14:55:52,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:55:52,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983505435] [2024-11-13 14:55:52,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:52,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:55:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 615 proven. 297 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-13 14:55:54,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:55:54,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983505435] [2024-11-13 14:55:54,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983505435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:55:54,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248211187] [2024-11-13 14:55:54,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:55:54,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:54,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:55:54,191 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:55:54,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:55:54,322 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:55:54,322 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:55:54,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:55:54,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:55:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1177 trivial. 0 not checked. [2024-11-13 14:55:55,214 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:55:55,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248211187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:55:55,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:55:55,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2024-11-13 14:55:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524962546] [2024-11-13 14:55:55,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:55:55,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:55:55,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:55:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:55:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:55:55,216 INFO L87 Difference]: Start difference. First operand 160 states and 206 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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) [2024-11-13 14:55:55,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:55,368 INFO L93 Difference]: Finished difference Result 167 states and 214 transitions. [2024-11-13 14:55:55,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:55:55,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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 121 [2024-11-13 14:55:55,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:55,372 INFO L225 Difference]: With dead ends: 167 [2024-11-13 14:55:55,372 INFO L226 Difference]: Without dead ends: 165 [2024-11-13 14:55:55,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:55:55,377 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:55:55,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 40 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:55:55,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-13 14:55:55,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-13 14:55:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.2926829268292683) internal successors, (212), 164 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 212 transitions. [2024-11-13 14:55:55,411 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 212 transitions. Word has length 121 [2024-11-13 14:55:55,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:55,411 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 212 transitions. [2024-11-13 14:55:55,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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) [2024-11-13 14:55:55,412 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 212 transitions. [2024-11-13 14:55:55,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 14:55:55,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:55,414 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 11, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:55,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:55:55,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:55,615 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:55,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:55,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1131822973, now seen corresponding path program 1 times [2024-11-13 14:55:55,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:55:55,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458528712] [2024-11-13 14:55:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:55,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:55:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 615 proven. 297 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-13 14:55:57,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:55:57,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458528712] [2024-11-13 14:55:57,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458528712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:55:57,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561509903] [2024-11-13 14:55:57,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:57,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:57,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:55:57,096 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:55:57,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:55:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:57,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 14:55:57,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:55:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:55:58,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:55:59,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:55:59,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561509903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:55:59,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:55:59,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 25, 25] total 61 [2024-11-13 14:55:59,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906534659] [2024-11-13 14:55:59,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:55:59,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-13 14:55:59,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:55:59,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-13 14:55:59,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1394, Invalid=2388, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 14:55:59,476 INFO L87 Difference]: Start difference. First operand 165 states and 212 transitions. Second operand has 62 states, 62 states have (on average 4.870967741935484) internal successors, (302), 61 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:02,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:02,727 INFO L93 Difference]: Finished difference Result 5221 states and 6685 transitions. [2024-11-13 14:56:02,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-13 14:56:02,729 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.870967741935484) internal successors, (302), 61 states have internal predecessors, (302), 0 states have call successors, (0), 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 126 [2024-11-13 14:56:02,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:02,752 INFO L225 Difference]: With dead ends: 5221 [2024-11-13 14:56:02,752 INFO L226 Difference]: Without dead ends: 5069 [2024-11-13 14:56:02,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2567, Invalid=4573, Unknown=0, NotChecked=0, Total=7140 [2024-11-13 14:56:02,757 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1928 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:02,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 367 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:56:02,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5069 states. [2024-11-13 14:56:02,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5069 to 985. [2024-11-13 14:56:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 984 states have (on average 1.20630081300813) internal successors, (1187), 984 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:02,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1187 transitions. [2024-11-13 14:56:02,965 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1187 transitions. Word has length 126 [2024-11-13 14:56:02,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:02,965 INFO L471 AbstractCegarLoop]: Abstraction has 985 states and 1187 transitions. [2024-11-13 14:56:02,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.870967741935484) internal successors, (302), 61 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:02,966 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1187 transitions. [2024-11-13 14:56:02,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-13 14:56:02,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:02,973 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 34, 23, 23, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:03,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:56:03,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 14:56:03,174 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:03,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:03,175 INFO L85 PathProgramCache]: Analyzing trace with hash -2058768925, now seen corresponding path program 2 times [2024-11-13 14:56:03,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:03,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216732151] [2024-11-13 14:56:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:03,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 1024 proven. 8 refuted. 0 times theorem prover too weak. 4193 trivial. 0 not checked. [2024-11-13 14:56:04,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:04,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216732151] [2024-11-13 14:56:04,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216732151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:56:04,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17366802] [2024-11-13 14:56:04,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:56:04,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:56:04,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:56:04,936 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:56:04,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:56:05,485 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:56:05,485 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:56:05,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-13 14:56:05,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:56:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:56:08,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:56:12,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:56:12,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17366802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:56:12,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:56:12,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 49, 49] total 105 [2024-11-13 14:56:12,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495531410] [2024-11-13 14:56:12,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:56:12,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-13 14:56:12,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:56:12,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-13 14:56:12,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4680, Invalid=6240, Unknown=0, NotChecked=0, Total=10920 [2024-11-13 14:56:12,927 INFO L87 Difference]: Start difference. First operand 985 states and 1187 transitions. Second operand has 105 states, 105 states have (on average 4.847619047619047) internal successors, (509), 105 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:44,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:56:44,351 INFO L93 Difference]: Finished difference Result 3169 states and 3907 transitions. [2024-11-13 14:56:44,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2024-11-13 14:56:44,352 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 4.847619047619047) internal successors, (509), 105 states have internal predecessors, (509), 0 states have call successors, (0), 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 246 [2024-11-13 14:56:44,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:56:44,361 INFO L225 Difference]: With dead ends: 3169 [2024-11-13 14:56:44,361 INFO L226 Difference]: Without dead ends: 2207 [2024-11-13 14:56:44,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59286 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=47127, Invalid=103029, Unknown=0, NotChecked=0, Total=150156 [2024-11-13 14:56:44,386 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 6414 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6414 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:56:44,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6414 Valid, 594 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 14:56:44,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2024-11-13 14:56:44,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 587. [2024-11-13 14:56:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 586 states have (on average 1.1689419795221843) internal successors, (685), 586 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 685 transitions. [2024-11-13 14:56:44,470 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 685 transitions. Word has length 246 [2024-11-13 14:56:44,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:56:44,471 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 685 transitions. [2024-11-13 14:56:44,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 4.847619047619047) internal successors, (509), 105 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:56:44,471 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 685 transitions. [2024-11-13 14:56:44,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-13 14:56:44,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:56:44,483 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 47, 47, 47, 47, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:56:44,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:56:44,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:56:44,687 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:56:44,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:56:44,688 INFO L85 PathProgramCache]: Analyzing trace with hash -498853379, now seen corresponding path program 3 times [2024-11-13 14:56:44,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:56:44,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765386454] [2024-11-13 14:56:44,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:56:44,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:56:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:56:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 21953 backedges. 11091 proven. 5499 refuted. 0 times theorem prover too weak. 5363 trivial. 0 not checked. [2024-11-13 14:56:57,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:56:57,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765386454] [2024-11-13 14:56:57,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765386454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:56:57,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43211934] [2024-11-13 14:56:57,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:56:57,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:56:57,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:56:57,945 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:56:57,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:56:58,420 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 14:56:58,420 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:56:58,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 14:56:58,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:57:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 21953 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21949 trivial. 0 not checked. [2024-11-13 14:57:01,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:57:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 21953 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21949 trivial. 0 not checked. [2024-11-13 14:57:10,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43211934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:57:10,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:57:10,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 7, 8] total 63 [2024-11-13 14:57:10,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074735748] [2024-11-13 14:57:10,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:57:10,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-13 14:57:10,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:57:10,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-13 14:57:10,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1294, Invalid=2738, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 14:57:10,387 INFO L87 Difference]: Start difference. First operand 587 states and 685 transitions. Second operand has 64 states, 64 states have (on average 4.671875) internal successors, (299), 63 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:59:12,952 INFO L93 Difference]: Finished difference Result 2628 states and 3327 transitions. [2024-11-13 14:59:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 614 states. [2024-11-13 14:59:12,953 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.671875) internal successors, (299), 63 states have internal predecessors, (299), 0 states have call successors, (0), 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 486 [2024-11-13 14:59:12,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:59:12,963 INFO L225 Difference]: With dead ends: 2628 [2024-11-13 14:59:12,963 INFO L226 Difference]: Without dead ends: 2284 [2024-11-13 14:59:12,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1628 GetRequests, 958 SyntacticMatches, 1 SemanticMatches, 669 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210652 ImplicationChecksByTransitivity, 113.5s TimeCoverageRelationStatistics Valid=97883, Invalid=351687, Unknown=0, NotChecked=0, Total=449570 [2024-11-13 14:59:12,984 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 10243 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10243 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1569 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:59:12,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10243 Valid, 354 Invalid, 2632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1569 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-13 14:59:12,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2024-11-13 14:59:13,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 605. [2024-11-13 14:59:13,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 604 states have (on average 1.1672185430463575) internal successors, (705), 604 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:13,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 705 transitions. [2024-11-13 14:59:13,093 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 705 transitions. Word has length 486 [2024-11-13 14:59:13,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:59:13,094 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 705 transitions. [2024-11-13 14:59:13,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.671875) internal successors, (299), 63 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:13,095 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 705 transitions. [2024-11-13 14:59:13,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2024-11-13 14:59:13,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:59:13,108 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 48, 48, 46, 46, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:59:13,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 14:59:13,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:13,308 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:59:13,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:13,309 INFO L85 PathProgramCache]: Analyzing trace with hash -90658119, now seen corresponding path program 4 times [2024-11-13 14:59:13,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:59:13,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648348906] [2024-11-13 14:59:13,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:13,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:59:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 22019 backedges. 11083 proven. 5736 refuted. 0 times theorem prover too weak. 5200 trivial. 0 not checked. [2024-11-13 14:59:26,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:59:26,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648348906] [2024-11-13 14:59:26,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648348906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:59:26,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997115368] [2024-11-13 14:59:26,056 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:59:26,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:26,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:59:26,060 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:59:26,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e9bdad-145a-46f0-a1d2-240000f6fe15/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process