./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/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_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/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_98401598-b05a-4575-b501-5aaac6bc3e5a/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 8f54012f988f8b18e3a56958a20c5d2f68df7899121416cbc3449d3f0665a6c5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:24:23,548 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:24:23,639 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:24:23,644 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:24:23,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:24:23,687 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:24:23,690 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:24:23,691 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:24:23,691 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:24:23,691 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:24:23,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:24:23,692 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:24:23,692 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:24:23,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:24:23,693 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:24:23,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:24:23,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:24:23,695 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:24:23,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:24:23,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:24:23,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:24:23,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:24:23,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:24:23,696 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:24:23,697 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:24:23,697 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:24:23,697 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:24:23,697 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:24:23,697 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:24:23,697 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:24:23,697 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:24:23,697 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:24:23,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:24:23,698 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:24:23,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:24:23,698 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:24:23,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:24:23,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:24:23,698 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:24:23,698 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:24:23,698 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:24:23,698 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:24:23,698 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_98401598-b05a-4575-b501-5aaac6bc3e5a/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 -> 8f54012f988f8b18e3a56958a20c5d2f68df7899121416cbc3449d3f0665a6c5 [2024-11-13 14:24:24,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:24:24,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:24:24,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:24:24,084 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:24:24,085 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:24:24,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-programs/partial_mod_count_limited_1.c Unable to find full path for "g++" [2024-11-13 14:24:26,242 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:24:26,502 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:24:26,503 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/sv-benchmarks/c/array-programs/partial_mod_count_limited_1.c [2024-11-13 14:24:26,517 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/data/342a9d2c0/4f039ff880a7432eaeb388d859765aa5/FLAG3c0e195a1 [2024-11-13 14:24:26,540 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/data/342a9d2c0/4f039ff880a7432eaeb388d859765aa5 [2024-11-13 14:24:26,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:24:26,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:24:26,546 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:24:26,546 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:24:26,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:24:26,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:24:26" (1/1) ... [2024-11-13 14:24:26,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3545f2a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:24:26, skipping insertion in model container [2024-11-13 14:24:26,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:24:26" (1/1) ... [2024-11-13 14:24:26,573 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:24:26,766 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_98401598-b05a-4575-b501-5aaac6bc3e5a/sv-benchmarks/c/array-programs/partial_mod_count_limited_1.c[331,344] [2024-11-13 14:24:26,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:24:26,800 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:24:26,812 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_98401598-b05a-4575-b501-5aaac6bc3e5a/sv-benchmarks/c/array-programs/partial_mod_count_limited_1.c[331,344] [2024-11-13 14:24:26,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:24:26,837 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:24:26,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:24:26 WrapperNode [2024-11-13 14:24:26,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:24:26,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:24:26,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:24:26,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:24:26,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:24:26" (1/1) ... [2024-11-13 14:24:26,854 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:24:26" (1/1) ... [2024-11-13 14:24:26,877 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-11-13 14:24:26,877 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:24:26,878 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:24:26,878 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:24:26,878 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:24:26,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:24:26" (1/1) ... [2024-11-13 14:24:26,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:24:26" (1/1) ... [2024-11-13 14:24:26,889 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:24:26" (1/1) ... [2024-11-13 14:24:26,903 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-13 14:24:26,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:24:26" (1/1) ... [2024-11-13 14:24:26,903 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:24:26" (1/1) ... [2024-11-13 14:24:26,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:24:26" (1/1) ... [2024-11-13 14:24:26,913 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:24:26" (1/1) ... [2024-11-13 14:24:26,914 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:24:26" (1/1) ... [2024-11-13 14:24:26,915 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:24:26" (1/1) ... [2024-11-13 14:24:26,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:24:26,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:24:26,918 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:24:26,918 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:24:26,919 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:24:26" (1/1) ... [2024-11-13 14:24:26,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:24:26,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:26,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:24:26,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:24:26,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:24:26,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:24:26,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:24:26,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:24:26,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:24:26,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:24:26,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:24:26,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:24:26,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:24:26,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:24:26,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:24:27,072 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:24:27,074 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:24:27,260 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-13 14:24:27,260 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:24:27,270 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:24:27,271 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:24:27,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:24:27 BoogieIcfgContainer [2024-11-13 14:24:27,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:24:27,274 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:24:27,274 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:24:27,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:24:27,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:24:26" (1/3) ... [2024-11-13 14:24:27,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51afbd6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:24:27, skipping insertion in model container [2024-11-13 14:24:27,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:24:26" (2/3) ... [2024-11-13 14:24:27,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51afbd6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:24:27, skipping insertion in model container [2024-11-13 14:24:27,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:24:27" (3/3) ... [2024-11-13 14:24:27,283 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_1.c [2024-11-13 14:24:27,301 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:24:27,303 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG partial_mod_count_limited_1.c that has 1 procedures, 21 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 14:24:27,366 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:24:27,380 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;@60fa8ddf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:24:27,380 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:24:27,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 14:24:27,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:27,394 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:27,395 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:27,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:27,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1939796378, now seen corresponding path program 1 times [2024-11-13 14:24:27,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:27,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990441558] [2024-11-13 14:24:27,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:27,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:27,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:27,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990441558] [2024-11-13 14:24:27,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990441558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:24:27,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:24:27,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:24:27,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501153404] [2024-11-13 14:24:27,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:24:27,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:24:27,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:27,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:24:27,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:24:27,668 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:27,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:27,688 INFO L93 Difference]: Finished difference Result 39 states and 54 transitions. [2024-11-13 14:24:27,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:24:27,690 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 14:24:27,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:27,697 INFO L225 Difference]: With dead ends: 39 [2024-11-13 14:24:27,698 INFO L226 Difference]: Without dead ends: 17 [2024-11-13 14:24:27,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:24:27,705 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:27,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:24:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-13 14:24:27,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-13 14:24:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:27,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-13 14:24:27,745 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2024-11-13 14:24:27,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:27,747 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-13 14:24:27,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:27,748 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-13 14:24:27,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 14:24:27,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:27,749 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:27,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:24:27,749 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:27,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:27,750 INFO L85 PathProgramCache]: Analyzing trace with hash -54935082, now seen corresponding path program 1 times [2024-11-13 14:24:27,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:27,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953463189] [2024-11-13 14:24:27,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:27,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:28,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:28,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953463189] [2024-11-13 14:24:28,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953463189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:24:28,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:24:28,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:24:28,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170753050] [2024-11-13 14:24:28,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:24:28,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:24:28,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:28,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:24:28,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:24:28,028 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:28,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:28,101 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2024-11-13 14:24:28,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:24:28,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 14:24:28,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:28,103 INFO L225 Difference]: With dead ends: 37 [2024-11-13 14:24:28,116 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 14:24:28,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:24:28,118 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:28,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 21 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:24:28,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 14:24:28,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18. [2024-11-13 14:24:28,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:28,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-13 14:24:28,130 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2024-11-13 14:24:28,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:28,130 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-13 14:24:28,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:28,131 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-13 14:24:28,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 14:24:28,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:28,132 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:28,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:24:28,132 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:28,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:28,134 INFO L85 PathProgramCache]: Analyzing trace with hash 784383783, now seen corresponding path program 1 times [2024-11-13 14:24:28,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:28,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709306854] [2024-11-13 14:24:28,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:28,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:28,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:28,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709306854] [2024-11-13 14:24:28,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709306854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:28,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903657510] [2024-11-13 14:24:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:28,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:28,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:28,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:28,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:24:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:28,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:24:28,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:28,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:28,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903657510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:28,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:28,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-13 14:24:28,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201987876] [2024-11-13 14:24:28,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:28,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:24:28,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:24:28,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:24:28,779 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:28,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:28,991 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-11-13 14:24:28,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:24:28,991 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-13 14:24:28,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:28,992 INFO L225 Difference]: With dead ends: 63 [2024-11-13 14:24:28,992 INFO L226 Difference]: Without dead ends: 55 [2024-11-13 14:24:28,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:24:28,994 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 136 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:28,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 47 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:24:28,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-13 14:24:29,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 33. [2024-11-13 14:24:29,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:29,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2024-11-13 14:24:29,006 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 16 [2024-11-13 14:24:29,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:29,006 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2024-11-13 14:24:29,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:29,006 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2024-11-13 14:24:29,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 14:24:29,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:29,007 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:29,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:24:29,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:29,208 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:29,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:29,210 INFO L85 PathProgramCache]: Analyzing trace with hash -520466666, now seen corresponding path program 2 times [2024-11-13 14:24:29,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:29,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407957802] [2024-11-13 14:24:29,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:29,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:29,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:29,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407957802] [2024-11-13 14:24:29,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407957802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:29,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817884951] [2024-11-13 14:24:29,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:24:29,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:29,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:29,840 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:29,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:24:29,951 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:24:29,951 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:29,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:24:29,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:30,617 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 14:24:30,617 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:24:30,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817884951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:24:30,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:24:30,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2024-11-13 14:24:30,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863863178] [2024-11-13 14:24:30,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:24:30,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:24:30,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:30,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:24:30,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:24:30,619 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:30,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:30,746 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2024-11-13 14:24:30,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:24:30,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-13 14:24:30,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:30,748 INFO L225 Difference]: With dead ends: 40 [2024-11-13 14:24:30,748 INFO L226 Difference]: Without dead ends: 38 [2024-11-13 14:24:30,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:24:30,749 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:30,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 39 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:24:30,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-13 14:24:30,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-13 14:24:30,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:30,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2024-11-13 14:24:30,769 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 31 [2024-11-13 14:24:30,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:30,770 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2024-11-13 14:24:30,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:30,770 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2024-11-13 14:24:30,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 14:24:30,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:30,771 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:30,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:24:30,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:30,976 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:30,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:30,976 INFO L85 PathProgramCache]: Analyzing trace with hash -520526248, now seen corresponding path program 1 times [2024-11-13 14:24:30,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:30,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95272359] [2024-11-13 14:24:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:30,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:31,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:31,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95272359] [2024-11-13 14:24:31,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95272359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334779002] [2024-11-13 14:24:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:31,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:31,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:31,376 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:31,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:24:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:31,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:24:31,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:31,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:31,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334779002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:31,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:31,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-13 14:24:31,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942542064] [2024-11-13 14:24:31,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:31,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:24:31,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:31,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:24:31,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:24:31,865 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 18 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:32,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:32,278 INFO L93 Difference]: Finished difference Result 189 states and 237 transitions. [2024-11-13 14:24:32,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:24:32,279 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 18 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-13 14:24:32,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:32,282 INFO L225 Difference]: With dead ends: 189 [2024-11-13 14:24:32,282 INFO L226 Difference]: Without dead ends: 176 [2024-11-13 14:24:32,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:24:32,284 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 437 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:32,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 97 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:24:32,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-13 14:24:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 68. [2024-11-13 14:24:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 67 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 91 transitions. [2024-11-13 14:24:32,308 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 91 transitions. Word has length 31 [2024-11-13 14:24:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:32,309 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 91 transitions. [2024-11-13 14:24:32,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 18 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:32,309 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 91 transitions. [2024-11-13 14:24:32,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-13 14:24:32,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:32,312 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:32,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:24:32,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:32,513 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:32,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:32,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1117364680, now seen corresponding path program 2 times [2024-11-13 14:24:32,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:32,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906061003] [2024-11-13 14:24:32,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:32,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:33,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:33,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906061003] [2024-11-13 14:24:33,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906061003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:33,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434918258] [2024-11-13 14:24:33,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:24:33,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:33,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:33,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:33,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:24:33,652 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:24:33,652 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:33,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:24:33,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-13 14:24:34,716 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:24:34,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434918258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:24:34,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:24:34,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 18 [2024-11-13 14:24:34,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993158514] [2024-11-13 14:24:34,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:24:34,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:24:34,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:34,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:24:34,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:24:34,718 INFO L87 Difference]: Start difference. First operand 68 states and 91 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:34,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:34,929 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2024-11-13 14:24:34,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:24:34,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-13 14:24:34,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:34,931 INFO L225 Difference]: With dead ends: 75 [2024-11-13 14:24:34,931 INFO L226 Difference]: Without dead ends: 73 [2024-11-13 14:24:34,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:24:34,932 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:34,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 54 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:24:34,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-13 14:24:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-13 14:24:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 72 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2024-11-13 14:24:34,957 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 61 [2024-11-13 14:24:34,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:34,957 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2024-11-13 14:24:34,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:34,958 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2024-11-13 14:24:34,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-13 14:24:34,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:34,959 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:34,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:24:35,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 14:24:35,162 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:35,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:35,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1930508743, now seen corresponding path program 1 times [2024-11-13 14:24:35,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:35,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043219007] [2024-11-13 14:24:35,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:35,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:36,036 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:24:36,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:36,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043219007] [2024-11-13 14:24:36,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043219007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:36,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366911972] [2024-11-13 14:24:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:36,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:36,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:36,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:36,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:24:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:36,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:24:36,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:24:36,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:37,146 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:24:37,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366911972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:37,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:37,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-13 14:24:37,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501008213] [2024-11-13 14:24:37,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:37,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 14:24:37,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:37,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 14:24:37,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 14:24:37,153 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand has 37 states, 37 states have (on average 4.594594594594595) internal successors, (170), 36 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:38,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:38,173 INFO L93 Difference]: Finished difference Result 500 states and 623 transitions. [2024-11-13 14:24:38,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 14:24:38,174 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.594594594594595) internal successors, (170), 36 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-13 14:24:38,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:38,176 INFO L225 Difference]: With dead ends: 500 [2024-11-13 14:24:38,176 INFO L226 Difference]: Without dead ends: 482 [2024-11-13 14:24:38,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 14:24:38,179 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 802 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:38,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 239 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:24:38,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-11-13 14:24:38,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 133. [2024-11-13 14:24:38,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.371212121212121) internal successors, (181), 132 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:38,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 181 transitions. [2024-11-13 14:24:38,205 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 181 transitions. Word has length 66 [2024-11-13 14:24:38,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:38,205 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 181 transitions. [2024-11-13 14:24:38,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.594594594594595) internal successors, (170), 36 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:38,205 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 181 transitions. [2024-11-13 14:24:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 14:24:38,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:38,208 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:38,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 14:24:38,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:38,413 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:38,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:38,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2034710919, now seen corresponding path program 2 times [2024-11-13 14:24:38,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:38,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479670470] [2024-11-13 14:24:38,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:38,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:24:41,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:41,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479670470] [2024-11-13 14:24:41,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479670470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:41,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574018248] [2024-11-13 14:24:41,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:24:41,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:41,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:41,132 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:41,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:24:41,421 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:24:41,421 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:41,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 14:24:41,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:24:42,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:24:43,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574018248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:43,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:43,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 72 [2024-11-13 14:24:43,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990303938] [2024-11-13 14:24:43,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:43,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-13 14:24:43,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:43,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-13 14:24:43,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=2949, Unknown=0, NotChecked=0, Total=5256 [2024-11-13 14:24:43,669 INFO L87 Difference]: Start difference. First operand 133 states and 181 transitions. Second operand has 73 states, 73 states have (on average 4.794520547945205) internal successors, (350), 72 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:45,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:45,885 INFO L93 Difference]: Finished difference Result 1028 states and 1283 transitions. [2024-11-13 14:24:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-13 14:24:45,886 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 4.794520547945205) internal successors, (350), 72 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-11-13 14:24:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:45,890 INFO L225 Difference]: With dead ends: 1028 [2024-11-13 14:24:45,890 INFO L226 Difference]: Without dead ends: 1010 [2024-11-13 14:24:45,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3217 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3480, Invalid=5640, Unknown=0, NotChecked=0, Total=9120 [2024-11-13 14:24:45,895 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 2316 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2316 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:45,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2316 Valid, 467 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:24:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2024-11-13 14:24:45,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 253. [2024-11-13 14:24:45,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.3849206349206349) internal successors, (349), 252 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:45,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 349 transitions. [2024-11-13 14:24:45,930 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 349 transitions. Word has length 126 [2024-11-13 14:24:45,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:45,930 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 349 transitions. [2024-11-13 14:24:45,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 4.794520547945205) internal successors, (350), 72 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:45,931 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 349 transitions. [2024-11-13 14:24:45,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-13 14:24:45,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:45,934 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:45,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:24:46,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:46,138 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:46,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:46,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1449842951, now seen corresponding path program 3 times [2024-11-13 14:24:46,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:46,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495325340] [2024-11-13 14:24:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:46,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:53,227 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:24:53,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:53,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495325340] [2024-11-13 14:24:53,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495325340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:53,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56705457] [2024-11-13 14:24:53,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:24:53,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:53,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:53,230 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:53,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:24:53,461 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 14:24:53,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:53,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 14:24:53,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5221 trivial. 0 not checked. [2024-11-13 14:24:55,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5221 trivial. 0 not checked. [2024-11-13 14:25:00,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56705457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:00,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:00,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 7, 8] total 62 [2024-11-13 14:25:00,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901311501] [2024-11-13 14:25:00,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:00,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-13 14:25:00,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:00,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-13 14:25:00,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1245, Invalid=2661, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 14:25:00,633 INFO L87 Difference]: Start difference. First operand 253 states and 349 transitions. Second operand has 63 states, 63 states have (on average 4.492063492063492) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:22,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:22,638 INFO L93 Difference]: Finished difference Result 1942 states and 2540 transitions. [2024-11-13 14:26:22,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 601 states. [2024-11-13 14:26:22,639 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.492063492063492) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2024-11-13 14:26:22,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:22,649 INFO L225 Difference]: With dead ends: 1942 [2024-11-13 14:26:22,650 INFO L226 Difference]: Without dead ends: 1924 [2024-11-13 14:26:22,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1133 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 655 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201755 ImplicationChecksByTransitivity, 76.2s TimeCoverageRelationStatistics Valid=93936, Invalid=337056, Unknown=0, NotChecked=0, Total=430992 [2024-11-13 14:26:22,687 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 9873 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 1433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9873 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1433 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:22,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9873 Valid, 440 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1433 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-13 14:26:22,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2024-11-13 14:26:22,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 278. [2024-11-13 14:26:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.371841155234657) internal successors, (380), 277 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 380 transitions. [2024-11-13 14:26:22,754 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 380 transitions. Word has length 246 [2024-11-13 14:26:22,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:22,755 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 380 transitions. [2024-11-13 14:26:22,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.492063492063492) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:22,756 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 380 transitions. [2024-11-13 14:26:22,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-13 14:26:22,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:22,760 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:22,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:26:22,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:22,964 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:26:22,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:22,965 INFO L85 PathProgramCache]: Analyzing trace with hash 165370440, now seen corresponding path program 4 times [2024-11-13 14:26:22,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:22,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747185927] [2024-11-13 14:26:22,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:22,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:29,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5522 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 14:26:29,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:29,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747185927] [2024-11-13 14:26:29,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747185927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:29,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091749372] [2024-11-13 14:26:29,307 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:26:29,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:29,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:29,309 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:29,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:27:37,382 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:27:37,382 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:27:37,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 14:27:37,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5522 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 14:27:39,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:44,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5522 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 14:27:44,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091749372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:44,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:27:44,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 147 [2024-11-13 14:27:44,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413369615] [2024-11-13 14:27:44,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:44,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 148 states [2024-11-13 14:27:44,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:44,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2024-11-13 14:27:44,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9607, Invalid=12149, Unknown=0, NotChecked=0, Total=21756 [2024-11-13 14:27:44,113 INFO L87 Difference]: Start difference. First operand 278 states and 380 transitions. Second operand has 148 states, 148 states have (on average 4.898648648648648) internal successors, (725), 147 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:27:56,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:56,438 INFO L93 Difference]: Finished difference Result 3986 states and 4886 transitions. [2024-11-13 14:27:56,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-13 14:27:56,439 INFO L78 Accepts]: Start accepts. Automaton has has 148 states, 148 states have (on average 4.898648648648648) internal successors, (725), 147 states have internal predecessors, (725), 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 271 [2024-11-13 14:27:56,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:56,455 INFO L225 Difference]: With dead ends: 3986 [2024-11-13 14:27:56,455 INFO L226 Difference]: Without dead ends: 3948 [2024-11-13 14:27:56,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13917 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=14455, Invalid=23765, Unknown=0, NotChecked=0, Total=38220 [2024-11-13 14:27:56,461 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 5250 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:56,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 989 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 14:27:56,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2024-11-13 14:27:56,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 523. [2024-11-13 14:27:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 522 states have (on average 1.3850574712643677) internal successors, (723), 522 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:27:56,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 723 transitions. [2024-11-13 14:27:56,579 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 723 transitions. Word has length 271 [2024-11-13 14:27:56,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:56,580 INFO L471 AbstractCegarLoop]: Abstraction has 523 states and 723 transitions. [2024-11-13 14:27:56,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 148 states, 148 states have (on average 4.898648648648648) internal successors, (725), 147 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:27:56,581 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 723 transitions. [2024-11-13 14:27:56,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2024-11-13 14:27:56,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:56,593 INFO L215 NwaCegarLoop]: trace histogram [96, 96, 96, 96, 96, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:56,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:27:56,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:56,794 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:27:56,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:56,795 INFO L85 PathProgramCache]: Analyzing trace with hash 29861913, now seen corresponding path program 5 times [2024-11-13 14:27:56,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:56,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730224666] [2024-11-13 14:27:56,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:56,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 22966 backedges. 0 proven. 22896 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 14:28:18,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:28:18,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730224666] [2024-11-13 14:28:18,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730224666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:28:18,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170980627] [2024-11-13 14:28:18,227 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:28:18,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:18,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:18,230 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:18,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98401598-b05a-4575-b501-5aaac6bc3e5a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process