./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/partial_mod_count_1.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_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/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_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-programs/partial_mod_count_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/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_a66bc30c-2236-4c4a-892c-7b9f84523a68/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 a899e425fabfbfedb683b8dde873d61190b064645b1f5edf26c70c4b83dfe4a2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:48:55,523 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:48:55,618 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:48:55,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:48:55,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:48:55,665 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:48:55,665 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:48:55,666 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:48:55,666 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:48:55,666 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:48:55,666 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:48:55,666 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:48:55,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:48:55,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:48:55,667 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:48:55,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:48:55,669 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:48:55,669 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:48:55,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:48:55,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:48:55,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:48:55,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:48:55,671 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:48:55,671 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:48:55,671 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:48:55,671 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:48:55,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:48:55,671 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:48:55,671 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:48:55,672 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:48:55,672 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:48:55,672 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:48:55,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:48:55,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:48:55,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:48:55,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:48:55,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:48:55,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:48:55,672 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:48:55,673 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:48:55,673 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:48:55,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:48:55,673 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_a66bc30c-2236-4c4a-892c-7b9f84523a68/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 -> a899e425fabfbfedb683b8dde873d61190b064645b1f5edf26c70c4b83dfe4a2 [2024-11-13 13:48:56,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:48:56,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:48:56,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:48:56,037 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:48:56,037 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:48:56,039 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-programs/partial_mod_count_1.c Unable to find full path for "g++" [2024-11-13 13:48:57,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:48:58,163 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:48:58,164 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/sv-benchmarks/c/array-programs/partial_mod_count_1.c [2024-11-13 13:48:58,180 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/data/c00463921/2eabc0e6692a462e84c1495557a57d67/FLAGd1c942dc8 [2024-11-13 13:48:58,194 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/data/c00463921/2eabc0e6692a462e84c1495557a57d67 [2024-11-13 13:48:58,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:48:58,197 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:48:58,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:48:58,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:48:58,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:48:58,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:48:58" (1/1) ... [2024-11-13 13:48:58,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3304f2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:58, skipping insertion in model container [2024-11-13 13:48:58,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:48:58" (1/1) ... [2024-11-13 13:48:58,228 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:48:58,359 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_a66bc30c-2236-4c4a-892c-7b9f84523a68/sv-benchmarks/c/array-programs/partial_mod_count_1.c[323,336] [2024-11-13 13:48:58,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:48:58,383 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:48:58,393 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/sv-benchmarks/c/array-programs/partial_mod_count_1.c[323,336] [2024-11-13 13:48:58,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:48:58,411 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:48:58,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:58 WrapperNode [2024-11-13 13:48:58,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:48:58,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:48:58,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:48:58,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:48:58,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:58" (1/1) ... [2024-11-13 13:48:58,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:58" (1/1) ... [2024-11-13 13:48:58,440 INFO L138 Inliner]: procedures = 13, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2024-11-13 13:48:58,440 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:48:58,441 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:48:58,441 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:48:58,441 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:48:58,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:58" (1/1) ... [2024-11-13 13:48:58,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:58" (1/1) ... [2024-11-13 13:48:58,450 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:58" (1/1) ... [2024-11-13 13:48:58,461 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 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 13:48:58,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:58" (1/1) ... [2024-11-13 13:48:58,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:58" (1/1) ... [2024-11-13 13:48:58,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:58" (1/1) ... [2024-11-13 13:48:58,470 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:58" (1/1) ... [2024-11-13 13:48:58,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:58" (1/1) ... [2024-11-13 13:48:58,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:58" (1/1) ... [2024-11-13 13:48:58,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:48:58,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:48:58,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:48:58,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:48:58,475 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:58" (1/1) ... [2024-11-13 13:48:58,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:48:58,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:58,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:48:58,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:48:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:48:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:48:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:48:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 13:48:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:48:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:48:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:48:58,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:48:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:48:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:48:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 13:48:58,636 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:48:58,638 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:48:58,785 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-13 13:48:58,786 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:48:58,794 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:48:58,795 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:48:58,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:48:58 BoogieIcfgContainer [2024-11-13 13:48:58,795 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:48:58,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:48:58,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:48:58,804 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:48:58,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:48:58" (1/3) ... [2024-11-13 13:48:58,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83c4da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:48:58, skipping insertion in model container [2024-11-13 13:48:58,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:48:58" (2/3) ... [2024-11-13 13:48:58,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83c4da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:48:58, skipping insertion in model container [2024-11-13 13:48:58,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:48:58" (3/3) ... [2024-11-13 13:48:58,807 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_1.c [2024-11-13 13:48:58,822 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:48:58,823 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG partial_mod_count_1.c that has 1 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 13:48:58,877 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:48:58,892 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;@69d6a420, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:48:58,892 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:48:58,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 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 13:48:58,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 13:48:58,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:58,904 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:58,904 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:58,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:58,910 INFO L85 PathProgramCache]: Analyzing trace with hash -694175938, now seen corresponding path program 1 times [2024-11-13 13:48:58,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:58,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105875031] [2024-11-13 13:48:58,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:58,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:59,090 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 13:48:59,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:59,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105875031] [2024-11-13 13:48:59,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105875031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:59,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:48:59,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:48:59,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289448458] [2024-11-13 13:48:59,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:59,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:48:59,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:59,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:48:59,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:48:59,126 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 13:48:59,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:59,140 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2024-11-13 13:48:59,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:48:59,141 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-13 13:48:59,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:59,149 INFO L225 Difference]: With dead ends: 29 [2024-11-13 13:48:59,149 INFO L226 Difference]: Without dead ends: 13 [2024-11-13 13:48:59,152 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 13:48:59,155 INFO L432 NwaCegarLoop]: 20 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, 20 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 13:48:59,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:48:59,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-13 13:48:59,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-13 13:48:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 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 13:48:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2024-11-13 13:48:59,189 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 9 [2024-11-13 13:48:59,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:59,189 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2024-11-13 13:48:59,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 13:48:59,192 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2024-11-13 13:48:59,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 13:48:59,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:59,192 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:59,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:48:59,193 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:59,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:59,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1866781837, now seen corresponding path program 1 times [2024-11-13 13:48:59,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:59,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984354338] [2024-11-13 13:48:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:59,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:59,366 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 13:48:59,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:59,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984354338] [2024-11-13 13:48:59,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984354338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:48:59,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:48:59,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:48:59,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334788766] [2024-11-13 13:48:59,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:48:59,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:48:59,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:59,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:48:59,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:48:59,369 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 13:48:59,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:48:59,423 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2024-11-13 13:48:59,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:48:59,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-13 13:48:59,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:48:59,424 INFO L225 Difference]: With dead ends: 34 [2024-11-13 13:48:59,424 INFO L226 Difference]: Without dead ends: 23 [2024-11-13 13:48:59,424 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 13:48:59,425 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:48:59,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 12 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:48:59,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-13 13:48:59,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 15. [2024-11-13 13:48:59,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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 13:48:59,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-11-13 13:48:59,430 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 9 [2024-11-13 13:48:59,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:48:59,430 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-11-13 13:48:59,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 13:48:59,431 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-11-13 13:48:59,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 13:48:59,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:48:59,431 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:48:59,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:48:59,432 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:48:59,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:48:59,432 INFO L85 PathProgramCache]: Analyzing trace with hash 97563565, now seen corresponding path program 1 times [2024-11-13 13:48:59,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:48:59,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957294599] [2024-11-13 13:48:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:59,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:59,635 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 13:48:59,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:59,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957294599] [2024-11-13 13:48:59,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957294599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:48:59,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300952161] [2024-11-13 13:48:59,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:59,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:59,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:59,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:59,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:48:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:59,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:48:59,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:48:59,845 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 13:48:59,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:48:59,904 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 13:48:59,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300952161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:48:59,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:48:59,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-13 13:48:59,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060668124] [2024-11-13 13:48:59,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:48:59,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:48:59,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:48:59,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:48:59,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:48:59,909 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 13:49:00,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:49:00,107 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2024-11-13 13:49:00,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:49:00,109 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) Word has length 12 [2024-11-13 13:49:00,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:49:00,110 INFO L225 Difference]: With dead ends: 56 [2024-11-13 13:49:00,110 INFO L226 Difference]: Without dead ends: 45 [2024-11-13 13:49:00,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 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 13:49:00,111 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 110 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:49:00,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 32 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:49:00,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-13 13:49:00,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 23. [2024-11-13 13:49:00,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 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 13:49:00,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-13 13:49:00,121 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2024-11-13 13:49:00,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:49:00,122 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-13 13:49:00,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 13:49:00,122 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-13 13:49:00,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 13:49:00,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:49:00,123 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:49:00,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:49:00,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:00,329 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:49:00,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:49:00,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1361285581, now seen corresponding path program 1 times [2024-11-13 13:49:00,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:49:00,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70197841] [2024-11-13 13:49:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:00,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:49:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 13:49:00,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:49:00,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70197841] [2024-11-13 13:49:00,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70197841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:49:00,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:49:00,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:49:00,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202428447] [2024-11-13 13:49:00,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:49:00,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:49:00,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:49:00,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:49:00,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:49:00,931 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 13:49:01,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:49:01,045 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2024-11-13 13:49:01,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:49:01,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 21 [2024-11-13 13:49:01,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:49:01,047 INFO L225 Difference]: With dead ends: 35 [2024-11-13 13:49:01,047 INFO L226 Difference]: Without dead ends: 33 [2024-11-13 13:49:01,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-13 13:49:01,049 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 26 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:49:01,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 20 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:49:01,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-13 13:49:01,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-13 13:49:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 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 13:49:01,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-13 13:49:01,061 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 21 [2024-11-13 13:49:01,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:49:01,061 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-13 13:49:01,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 13:49:01,061 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-13 13:49:01,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 13:49:01,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:49:01,064 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:49:01,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:49:01,065 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:49:01,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:49:01,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1500421776, now seen corresponding path program 1 times [2024-11-13 13:49:01,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:49:01,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531034008] [2024-11-13 13:49:01,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:01,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:49:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 13:49:01,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:49:01,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531034008] [2024-11-13 13:49:01,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531034008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:49:01,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124594771] [2024-11-13 13:49:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:01,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:01,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:49:01,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:49:01,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:49:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:01,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:49:01,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:49:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:49:01,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:49:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:49:02,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124594771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:49:02,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:49:02,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2024-11-13 13:49:02,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570225421] [2024-11-13 13:49:02,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:49:02,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 13:49:02,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:49:02,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 13:49:02,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:49:02,083 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 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 13:49:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:49:04,123 INFO L93 Difference]: Finished difference Result 258 states and 319 transitions. [2024-11-13 13:49:04,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-13 13:49:04,124 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 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 26 [2024-11-13 13:49:04,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:49:04,127 INFO L225 Difference]: With dead ends: 258 [2024-11-13 13:49:04,127 INFO L226 Difference]: Without dead ends: 235 [2024-11-13 13:49:04,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2745 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2091, Invalid=4715, Unknown=0, NotChecked=0, Total=6806 [2024-11-13 13:49:04,131 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 372 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:49:04,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 81 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:49:04,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-13 13:49:04,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 56. [2024-11-13 13:49:04,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:49:04,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2024-11-13 13:49:04,146 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 26 [2024-11-13 13:49:04,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:49:04,146 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2024-11-13 13:49:04,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 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 13:49:04,146 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2024-11-13 13:49:04,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 13:49:04,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:49:04,147 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 13:49:04,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:49:04,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:04,348 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:49:04,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:49:04,349 INFO L85 PathProgramCache]: Analyzing trace with hash 914792529, now seen corresponding path program 2 times [2024-11-13 13:49:04,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:49:04,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631792620] [2024-11-13 13:49:04,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:04,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:49:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 79 proven. 40 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-13 13:49:04,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:49:04,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631792620] [2024-11-13 13:49:04,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631792620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:49:04,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774327738] [2024-11-13 13:49:04,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:49:04,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:04,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:49:04,868 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:49:04,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:49:04,989 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:49:04,989 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:49:04,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 13:49:04,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:49:05,319 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 13:49:05,319 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:49:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 13:49:05,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774327738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:49:05,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:49:05,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2024-11-13 13:49:05,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616045196] [2024-11-13 13:49:05,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:49:05,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 13:49:05,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:49:05,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 13:49:05,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=618, Unknown=0, NotChecked=0, Total=992 [2024-11-13 13:49:05,658 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 32 states, 32 states have (on average 3.0) internal successors, (96), 31 states have internal predecessors, (96), 0 states have call successors, (0), 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 13:49:06,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:49:06,440 INFO L93 Difference]: Finished difference Result 581 states and 700 transitions. [2024-11-13 13:49:06,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 13:49:06,441 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0) internal successors, (96), 31 states have internal predecessors, (96), 0 states have call successors, (0), 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 49 [2024-11-13 13:49:06,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:49:06,443 INFO L225 Difference]: With dead ends: 581 [2024-11-13 13:49:06,443 INFO L226 Difference]: Without dead ends: 544 [2024-11-13 13:49:06,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=671, Invalid=1135, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 13:49:06,445 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 826 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:49:06,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 133 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:49:06,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2024-11-13 13:49:06,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 92. [2024-11-13 13:49:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.1868131868131868) internal successors, (108), 91 states have internal predecessors, (108), 0 states have call successors, (0), 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 13:49:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2024-11-13 13:49:06,468 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 49 [2024-11-13 13:49:06,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:49:06,468 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2024-11-13 13:49:06,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0) internal successors, (96), 31 states have internal predecessors, (96), 0 states have call successors, (0), 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 13:49:06,468 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2024-11-13 13:49:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-13 13:49:06,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:49:06,470 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 11, 11, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 13:49:06,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 13:49:06,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:06,671 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:49:06,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:49:06,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1163552017, now seen corresponding path program 3 times [2024-11-13 13:49:06,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:49:06,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315698511] [2024-11-13 13:49:06,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:06,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:49:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:07,856 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 373 proven. 187 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-13 13:49:07,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:49:07,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315698511] [2024-11-13 13:49:07,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315698511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:49:07,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391486965] [2024-11-13 13:49:07,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:49:07,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:07,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:49:07,859 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:49:07,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:49:07,965 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 13:49:07,965 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:49:07,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 13:49:07,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:49:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-13 13:49:08,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:49:10,007 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-13 13:49:10,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391486965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:49:10,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:49:10,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 7] total 25 [2024-11-13 13:49:10,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59213363] [2024-11-13 13:49:10,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:49:10,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 13:49:10,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:49:10,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 13:49:10,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2024-11-13 13:49:10,010 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 25 states have internal predecessors, (92), 0 states have call successors, (0), 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 13:49:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:49:15,686 INFO L93 Difference]: Finished difference Result 567 states and 720 transitions. [2024-11-13 13:49:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2024-11-13 13:49:15,686 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 25 states have internal predecessors, (92), 0 states have call successors, (0), 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 85 [2024-11-13 13:49:15,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:49:15,688 INFO L225 Difference]: With dead ends: 567 [2024-11-13 13:49:15,688 INFO L226 Difference]: Without dead ends: 512 [2024-11-13 13:49:15,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18136 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=10115, Invalid=26941, Unknown=0, NotChecked=0, Total=37056 [2024-11-13 13:49:15,705 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 511 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:49:15,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 137 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:49:15,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-13 13:49:15,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 117. [2024-11-13 13:49:15,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.1810344827586208) internal successors, (137), 116 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 13:49:15,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2024-11-13 13:49:15,730 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 85 [2024-11-13 13:49:15,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:49:15,731 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2024-11-13 13:49:15,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 25 states have internal predecessors, (92), 0 states have call successors, (0), 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 13:49:15,731 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2024-11-13 13:49:15,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-13 13:49:15,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:49:15,734 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 12, 10, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-13 13:49:15,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 13:49:15,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:15,934 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:49:15,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:49:15,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1432607600, now seen corresponding path program 4 times [2024-11-13 13:49:15,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:49:15,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520007054] [2024-11-13 13:49:15,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:15,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:49:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 367 proven. 222 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2024-11-13 13:49:17,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:49:17,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520007054] [2024-11-13 13:49:17,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520007054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:49:17,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856026006] [2024-11-13 13:49:17,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:49:17,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:17,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:49:17,081 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:49:17,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:49:17,745 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:49:17,746 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:49:17,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 13:49:17,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:49:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-13 13:49:18,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:49:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-13 13:49:19,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856026006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:49:19,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:49:19,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25, 25] total 62 [2024-11-13 13:49:19,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358717791] [2024-11-13 13:49:19,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:49:19,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-13 13:49:19,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:49:19,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-13 13:49:19,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1421, Invalid=2485, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 13:49:19,269 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand has 63 states, 63 states have (on average 3.0) internal successors, (189), 62 states have internal predecessors, (189), 0 states have call successors, (0), 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 13:49:21,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:49:21,345 INFO L93 Difference]: Finished difference Result 2252 states and 2707 transitions. [2024-11-13 13:49:21,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-13 13:49:21,345 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.0) internal successors, (189), 62 states have internal predecessors, (189), 0 states have call successors, (0), 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 110 [2024-11-13 13:49:21,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:49:21,354 INFO L225 Difference]: With dead ends: 2252 [2024-11-13 13:49:21,354 INFO L226 Difference]: Without dead ends: 2172 [2024-11-13 13:49:21,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2218 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2594, Invalid=4716, Unknown=0, NotChecked=0, Total=7310 [2024-11-13 13:49:21,357 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1975 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1975 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:49:21,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1975 Valid, 256 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:49:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2024-11-13 13:49:21,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 189. [2024-11-13 13:49:21,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.1808510638297873) internal successors, (222), 188 states have internal predecessors, (222), 0 states have call successors, (0), 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 13:49:21,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2024-11-13 13:49:21,425 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 110 [2024-11-13 13:49:21,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:49:21,425 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2024-11-13 13:49:21,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.0) internal successors, (189), 62 states have internal predecessors, (189), 0 states have call successors, (0), 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 13:49:21,426 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2024-11-13 13:49:21,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-13 13:49:21,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:49:21,429 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 23, 23, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-13 13:49:21,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:49:21,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:21,629 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:49:21,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:49:21,630 INFO L85 PathProgramCache]: Analyzing trace with hash -698875982, now seen corresponding path program 5 times [2024-11-13 13:49:21,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:49:21,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176753608] [2024-11-13 13:49:21,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:49:21,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:49:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:49:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3284 backedges. 1609 proven. 805 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2024-11-13 13:49:24,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:49:24,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176753608] [2024-11-13 13:49:24,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176753608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:49:24,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998262943] [2024-11-13 13:49:24,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:49:24,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:49:24,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:49:24,514 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:49:24,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a66bc30c-2236-4c4a-892c-7b9f84523a68/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process