./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s5if.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_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/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_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s5if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/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_85e1e81c-d665-4122-9950-bf5d34130e1e/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 b618695aa08df106816e7defd71220f009a5c8c09539ff7c8c29235c85f2ce8d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:11:03,911 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:11:03,977 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 16:11:03,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:11:03,983 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:11:04,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:11:04,025 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:11:04,025 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:11:04,026 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:11:04,026 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:11:04,026 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:11:04,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:11:04,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:11:04,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:11:04,027 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:11:04,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:11:04,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:11:04,029 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:11:04,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:11:04,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:11:04,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:11:04,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:11:04,030 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:11:04,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:11:04,031 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:11:04,031 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:11:04,031 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:11:04,031 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:11:04,031 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:11:04,031 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:11:04,031 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:11:04,031 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:11:04,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:11:04,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:11:04,032 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:11:04,032 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:11:04,032 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:11:04,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:11:04,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:11:04,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:11:04,032 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:11:04,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:11:04,032 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_85e1e81c-d665-4122-9950-bf5d34130e1e/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 -> b618695aa08df106816e7defd71220f009a5c8c09539ff7c8c29235c85f2ce8d [2024-11-13 16:11:04,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:11:04,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:11:04,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:11:04,397 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:11:04,397 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:11:04,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-fpi/s5if.c Unable to find full path for "g++" [2024-11-13 16:11:06,302 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:11:06,592 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:11:06,593 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/sv-benchmarks/c/array-fpi/s5if.c [2024-11-13 16:11:06,620 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/data/446fe861b/40b0cc2718c54548b6d19185dbcfad22/FLAGb3fa11456 [2024-11-13 16:11:06,662 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/data/446fe861b/40b0cc2718c54548b6d19185dbcfad22 [2024-11-13 16:11:06,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:11:06,672 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:11:06,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:11:06,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:11:06,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:11:06,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:06,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd81436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06, skipping insertion in model container [2024-11-13 16:11:06,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:06,703 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:11:06,894 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_85e1e81c-d665-4122-9950-bf5d34130e1e/sv-benchmarks/c/array-fpi/s5if.c[587,600] [2024-11-13 16:11:06,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:11:06,935 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:11:06,951 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_85e1e81c-d665-4122-9950-bf5d34130e1e/sv-benchmarks/c/array-fpi/s5if.c[587,600] [2024-11-13 16:11:06,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:11:06,986 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:11:06,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06 WrapperNode [2024-11-13 16:11:06,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:11:06,989 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:11:06,990 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:11:06,990 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:11:06,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:07,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:07,029 INFO L138 Inliner]: procedures = 17, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2024-11-13 16:11:07,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:11:07,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:11:07,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:11:07,033 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:11:07,042 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:07,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:07,045 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:07,068 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 7, 4, 6]. 37 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 4 writes are split as follows [0, 0, 1, 3]. [2024-11-13 16:11:07,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:07,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:07,083 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:07,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:07,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:07,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:07,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:11:07,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:11:07,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:11:07,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:11:07,096 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:07,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:11:07,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:07,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:11:07,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:11:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:11:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:11:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 16:11:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 16:11:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 16:11:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 16:11:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:11:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 16:11:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 16:11:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 16:11:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:11:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:11:07,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:11:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 16:11:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 16:11:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 16:11:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 16:11:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 16:11:07,250 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:11:07,252 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:11:07,410 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-13 16:11:07,410 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:11:07,418 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:11:07,419 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 16:11:07,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:11:07 BoogieIcfgContainer [2024-11-13 16:11:07,419 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:11:07,422 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:11:07,422 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:11:07,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:11:07,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:11:06" (1/3) ... [2024-11-13 16:11:07,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@deb7f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:11:07, skipping insertion in model container [2024-11-13 16:11:07,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06" (2/3) ... [2024-11-13 16:11:07,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@deb7f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:11:07, skipping insertion in model container [2024-11-13 16:11:07,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:11:07" (3/3) ... [2024-11-13 16:11:07,430 INFO L112 eAbstractionObserver]: Analyzing ICFG s5if.c [2024-11-13 16:11:07,447 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:11:07,449 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG s5if.c that has 1 procedures, 18 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 16:11:07,506 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:11:07,520 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;@47da88be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:11:07,520 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 16:11:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:07,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 16:11:07,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:07,531 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:07,532 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:07,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:07,541 INFO L85 PathProgramCache]: Analyzing trace with hash 354752829, now seen corresponding path program 1 times [2024-11-13 16:11:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:07,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868237777] [2024-11-13 16:11:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:07,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:07,731 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 16:11:07,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:07,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868237777] [2024-11-13 16:11:07,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868237777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:07,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:07,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:11:07,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371539827] [2024-11-13 16:11:07,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:07,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 16:11:07,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:07,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 16:11:07,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 16:11:07,769 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 16:11:07,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:07,787 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2024-11-13 16:11:07,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 16:11:07,790 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 16:11:07,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:07,797 INFO L225 Difference]: With dead ends: 32 [2024-11-13 16:11:07,797 INFO L226 Difference]: Without dead ends: 14 [2024-11-13 16:11:07,801 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 16:11:07,805 INFO L432 NwaCegarLoop]: 21 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, 21 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 16:11:07,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:11:07,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-13 16:11:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-13 16:11:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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 16:11:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-11-13 16:11:07,846 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2024-11-13 16:11:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:07,846 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-13 16:11:07,847 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 16:11:07,847 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-11-13 16:11:07,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 16:11:07,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:07,848 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:07,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:11:07,849 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:07,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:07,850 INFO L85 PathProgramCache]: Analyzing trace with hash -454593797, now seen corresponding path program 1 times [2024-11-13 16:11:07,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:07,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766584486] [2024-11-13 16:11:07,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:07,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:08,087 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 16:11:08,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:08,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766584486] [2024-11-13 16:11:08,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766584486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:08,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:08,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:11:08,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201987876] [2024-11-13 16:11:08,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:08,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:11:08,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:08,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:11:08,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:11:08,095 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 16:11:08,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:08,158 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-11-13 16:11:08,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:11:08,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 16:11:08,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:08,160 INFO L225 Difference]: With dead ends: 26 [2024-11-13 16:11:08,160 INFO L226 Difference]: Without dead ends: 18 [2024-11-13 16:11:08,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 16:11:08,162 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 19 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:08,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 10 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:11:08,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-13 16:11:08,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2024-11-13 16:11:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-11-13 16:11:08,167 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2024-11-13 16:11:08,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:08,168 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-11-13 16:11:08,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 16:11:08,168 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-11-13 16:11:08,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 16:11:08,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:08,169 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:08,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:11:08,169 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:08,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:08,170 INFO L85 PathProgramCache]: Analyzing trace with hash 340215071, now seen corresponding path program 1 times [2024-11-13 16:11:08,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:08,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050097684] [2024-11-13 16:11:08,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:08,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:09,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:09,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050097684] [2024-11-13 16:11:09,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050097684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:09,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110426871] [2024-11-13 16:11:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:09,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:09,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:09,172 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:09,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:11:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:09,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 16:11:09,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:09,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:11:09,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:11:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:09,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:09,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110426871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:09,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:09,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2024-11-13 16:11:09,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501008213] [2024-11-13 16:11:09,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:09,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 16:11:09,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:09,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 16:11:09,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-13 16:11:09,926 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:10,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:10,349 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2024-11-13 16:11:10,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 16:11:10,350 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-13 16:11:10,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:10,350 INFO L225 Difference]: With dead ends: 33 [2024-11-13 16:11:10,350 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 16:11:10,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-11-13 16:11:10,352 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 23 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:10,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 44 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:11:10,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 16:11:10,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2024-11-13 16:11:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 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 16:11:10,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-11-13 16:11:10,361 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 15 [2024-11-13 16:11:10,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:10,361 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-11-13 16:11:10,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-11-13 16:11:10,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 16:11:10,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:10,362 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:10,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:11:10,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:10,563 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:10,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:10,563 INFO L85 PathProgramCache]: Analyzing trace with hash 397473373, now seen corresponding path program 1 times [2024-11-13 16:11:10,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:10,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022630028] [2024-11-13 16:11:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:10,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:10,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:10,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022630028] [2024-11-13 16:11:10,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022630028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:10,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79390225] [2024-11-13 16:11:10,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:10,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:10,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:10,891 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:10,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:11:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:10,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 16:11:10,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:11,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:11:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:11,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:11,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-13 16:11:11,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-13 16:11:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:11,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79390225] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:11,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:11,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-13 16:11:11,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033789150] [2024-11-13 16:11:11,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:11,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:11:11,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:11,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:11:11,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:11:11,128 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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 16:11:11,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:11,202 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-13 16:11:11,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:11:11,202 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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) Word has length 15 [2024-11-13 16:11:11,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:11,203 INFO L225 Difference]: With dead ends: 36 [2024-11-13 16:11:11,203 INFO L226 Difference]: Without dead ends: 24 [2024-11-13 16:11:11,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:11:11,204 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:11,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 48 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:11:11,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-13 16:11:11,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2024-11-13 16:11:11,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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 16:11:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-13 16:11:11,210 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2024-11-13 16:11:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:11,210 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-13 16:11:11,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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 16:11:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-13 16:11:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 16:11:11,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:11,211 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:11,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:11:11,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:11,415 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:11,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:11,416 INFO L85 PathProgramCache]: Analyzing trace with hash -8189143, now seen corresponding path program 2 times [2024-11-13 16:11:11,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:11,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616858327] [2024-11-13 16:11:11,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:11,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:11,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:11,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616858327] [2024-11-13 16:11:11,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616858327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:11,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424870622] [2024-11-13 16:11:11,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:11:11,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:11,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:11,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:11,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:11:11,637 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:11:11,637 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:11,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:11:11,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:11,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:11,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424870622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:11,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:11,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-13 16:11:11,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295395540] [2024-11-13 16:11:11,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:11,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 16:11:11,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:11,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 16:11:11,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:11:11,799 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:11,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:11,956 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-11-13 16:11:11,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:11:11,957 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-13 16:11:11,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:11,957 INFO L225 Difference]: With dead ends: 31 [2024-11-13 16:11:11,957 INFO L226 Difference]: Without dead ends: 27 [2024-11-13 16:11:11,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-13 16:11:11,959 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:11,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 21 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:11:11,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-13 16:11:11,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2024-11-13 16:11:11,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 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 16:11:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-11-13 16:11:11,968 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2024-11-13 16:11:11,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:11,968 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-11-13 16:11:11,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:11,969 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-11-13 16:11:11,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 16:11:11,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:11,970 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:11,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:11:12,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:12,170 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:12,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:12,171 INFO L85 PathProgramCache]: Analyzing trace with hash 763379653, now seen corresponding path program 3 times [2024-11-13 16:11:12,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:12,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686642807] [2024-11-13 16:11:12,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:12,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:12,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:12,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686642807] [2024-11-13 16:11:12,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686642807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:12,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784327081] [2024-11-13 16:11:12,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:11:12,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:12,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:12,282 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:12,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:11:12,369 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 16:11:12,370 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:12,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:11:12,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:12,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:12,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784327081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:12,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:12,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-13 16:11:12,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768371482] [2024-11-13 16:11:12,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:12,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 16:11:12,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:12,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 16:11:12,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:11:12,478 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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 16:11:12,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:12,581 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-11-13 16:11:12,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:11:12,581 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) Word has length 18 [2024-11-13 16:11:12,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:12,582 INFO L225 Difference]: With dead ends: 34 [2024-11-13 16:11:12,582 INFO L226 Difference]: Without dead ends: 22 [2024-11-13 16:11:12,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-13 16:11:12,583 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:12,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 41 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:11:12,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-13 16:11:12,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-13 16:11:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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 16:11:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-13 16:11:12,589 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 18 [2024-11-13 16:11:12,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:12,589 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-13 16:11:12,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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 16:11:12,589 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-13 16:11:12,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 16:11:12,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:12,590 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:12,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 16:11:12,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 16:11:12,790 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:12,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:12,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1905572485, now seen corresponding path program 4 times [2024-11-13 16:11:12,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:12,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636777926] [2024-11-13 16:11:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:12,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:13,427 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:13,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:13,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636777926] [2024-11-13 16:11:13,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636777926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:13,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239804405] [2024-11-13 16:11:13,428 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:11:13,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:13,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:13,430 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:13,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:11:13,518 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:11:13,518 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:13,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 16:11:13,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:13,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:11:13,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:11:13,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:11:14,003 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 16:11:14,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2024-11-13 16:11:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:14,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:14,460 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 16:11:14,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 9 [2024-11-13 16:11:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:14,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239804405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:14,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:14,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2024-11-13 16:11:14,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181212073] [2024-11-13 16:11:14,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:14,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 16:11:14,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:14,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 16:11:14,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 16:11:14,840 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 33 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 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 16:11:16,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:16,457 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2024-11-13 16:11:16,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 16:11:16,458 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 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) Word has length 19 [2024-11-13 16:11:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:16,460 INFO L225 Difference]: With dead ends: 53 [2024-11-13 16:11:16,460 INFO L226 Difference]: Without dead ends: 43 [2024-11-13 16:11:16,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=346, Invalid=2104, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 16:11:16,462 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:16,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 78 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:11:16,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-13 16:11:16,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2024-11-13 16:11:16,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 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 16:11:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2024-11-13 16:11:16,473 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 19 [2024-11-13 16:11:16,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:16,473 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2024-11-13 16:11:16,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 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 16:11:16,473 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2024-11-13 16:11:16,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 16:11:16,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:16,474 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:16,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 16:11:16,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:16,679 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:16,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:16,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1848314183, now seen corresponding path program 1 times [2024-11-13 16:11:16,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:16,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296272951] [2024-11-13 16:11:16,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:16,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:17,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:17,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296272951] [2024-11-13 16:11:17,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296272951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:17,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383383277] [2024-11-13 16:11:17,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:17,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:17,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:17,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:17,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:11:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:17,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 16:11:17,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:17,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:11:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:17,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:17,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-13 16:11:17,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-13 16:11:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:17,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383383277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:17,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:17,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-13 16:11:17,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617905233] [2024-11-13 16:11:17,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:17,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 16:11:17,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:17,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 16:11:17,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-13 16:11:17,247 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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 16:11:17,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:17,353 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2024-11-13 16:11:17,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:11:17,354 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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 19 [2024-11-13 16:11:17,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:17,357 INFO L225 Difference]: With dead ends: 59 [2024-11-13 16:11:17,357 INFO L226 Difference]: Without dead ends: 41 [2024-11-13 16:11:17,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-13 16:11:17,359 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:17,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 63 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:11:17,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-13 16:11:17,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2024-11-13 16:11:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 38 states have internal predecessors, (46), 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 16:11:17,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2024-11-13 16:11:17,373 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 19 [2024-11-13 16:11:17,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:17,373 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2024-11-13 16:11:17,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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 16:11:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2024-11-13 16:11:17,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 16:11:17,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:17,374 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:17,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 16:11:17,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:17,575 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:17,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:17,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1256257157, now seen corresponding path program 5 times [2024-11-13 16:11:17,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:17,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679265900] [2024-11-13 16:11:17,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:17,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:17,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:17,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679265900] [2024-11-13 16:11:17,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679265900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:17,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960983125] [2024-11-13 16:11:17,710 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:11:17,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:17,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:17,712 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:17,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:11:17,806 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-13 16:11:17,806 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:17,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:11:17,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:17,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:17,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960983125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:17,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:17,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-13 16:11:17,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739528679] [2024-11-13 16:11:17,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:17,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 16:11:17,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:17,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 16:11:17,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-13 16:11:17,987 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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 16:11:18,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:18,210 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2024-11-13 16:11:18,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:11:18,212 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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 20 [2024-11-13 16:11:18,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:18,212 INFO L225 Difference]: With dead ends: 49 [2024-11-13 16:11:18,212 INFO L226 Difference]: Without dead ends: 45 [2024-11-13 16:11:18,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:11:18,213 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:18,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 37 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:11:18,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-13 16:11:18,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2024-11-13 16:11:18,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 38 states have internal predecessors, (46), 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 16:11:18,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2024-11-13 16:11:18,233 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 20 [2024-11-13 16:11:18,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:18,233 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2024-11-13 16:11:18,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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 16:11:18,234 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2024-11-13 16:11:18,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 16:11:18,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:18,234 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:18,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 16:11:18,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:18,435 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:18,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:18,436 INFO L85 PathProgramCache]: Analyzing trace with hash -730873049, now seen corresponding path program 2 times [2024-11-13 16:11:18,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:18,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438366648] [2024-11-13 16:11:18,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:18,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:18,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:18,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438366648] [2024-11-13 16:11:18,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438366648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:18,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874664141] [2024-11-13 16:11:18,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:11:18,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:18,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:18,574 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:18,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:11:18,670 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:11:18,670 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:18,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:11:18,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:18,761 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:18,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:18,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874664141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:18,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:18,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-13 16:11:18,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752952263] [2024-11-13 16:11:18,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:18,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 16:11:18,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:18,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 16:11:18,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-13 16:11:18,828 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 16:11:18,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:18,937 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2024-11-13 16:11:18,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 16:11:18,938 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 22 [2024-11-13 16:11:18,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:18,938 INFO L225 Difference]: With dead ends: 52 [2024-11-13 16:11:18,938 INFO L226 Difference]: Without dead ends: 26 [2024-11-13 16:11:18,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-13 16:11:18,939 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:18,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 35 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:11:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-13 16:11:18,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-13 16:11:18,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 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 16:11:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2024-11-13 16:11:18,945 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 22 [2024-11-13 16:11:18,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:18,945 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2024-11-13 16:11:18,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 16:11:18,946 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2024-11-13 16:11:18,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 16:11:18,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:18,946 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:18,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 16:11:19,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 16:11:19,147 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:19,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:19,147 INFO L85 PathProgramCache]: Analyzing trace with hash 350964895, now seen corresponding path program 6 times [2024-11-13 16:11:19,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:19,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624623098] [2024-11-13 16:11:19,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:19,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:20,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624623098] [2024-11-13 16:11:20,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624623098] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938408042] [2024-11-13 16:11:20,135 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:11:20,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:20,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:20,139 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:20,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 16:11:20,265 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-13 16:11:20,266 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:20,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 16:11:20,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:20,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:11:20,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:11:20,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:11:21,134 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-13 16:11:21,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 10 [2024-11-13 16:11:21,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:11:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:21,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:22,426 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-13 16:11:22,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2024-11-13 16:11:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:22,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938408042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:22,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:22,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 47 [2024-11-13 16:11:22,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357805346] [2024-11-13 16:11:22,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:22,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 16:11:22,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:22,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 16:11:22,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1950, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 16:11:22,859 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 47 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 states have internal predecessors, (58), 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 16:11:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:24,583 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2024-11-13 16:11:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 16:11:24,584 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 states have internal predecessors, (58), 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 23 [2024-11-13 16:11:24,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:24,585 INFO L225 Difference]: With dead ends: 47 [2024-11-13 16:11:24,585 INFO L226 Difference]: Without dead ends: 43 [2024-11-13 16:11:24,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=411, Invalid=3371, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 16:11:24,589 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:24,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 96 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 16:11:24,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-13 16:11:24,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2024-11-13 16:11:24,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 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 16:11:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-13 16:11:24,602 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 23 [2024-11-13 16:11:24,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:24,603 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-13 16:11:24,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 states have internal predecessors, (58), 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 16:11:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-13 16:11:24,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 16:11:24,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:24,607 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:24,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 16:11:24,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 16:11:24,812 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:24,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:24,812 INFO L85 PathProgramCache]: Analyzing trace with hash 408223197, now seen corresponding path program 3 times [2024-11-13 16:11:24,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:24,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916228322] [2024-11-13 16:11:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:24,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:25,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:25,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916228322] [2024-11-13 16:11:25,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916228322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:25,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416866022] [2024-11-13 16:11:25,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:11:25,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:25,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:25,192 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:25,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 16:11:25,322 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 16:11:25,322 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:25,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 16:11:25,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:25,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 16:11:25,436 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:11:25,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-13 16:11:25,515 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 16:11:25,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:25,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 16:11:25,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416866022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:25,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:25,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2024-11-13 16:11:25,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555996865] [2024-11-13 16:11:25,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:25,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 16:11:25,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:25,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 16:11:25,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-13 16:11:25,667 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:26,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:26,353 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-11-13 16:11:26,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 16:11:26,354 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-13 16:11:26,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:26,355 INFO L225 Difference]: With dead ends: 36 [2024-11-13 16:11:26,355 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 16:11:26,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=874, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 16:11:26,356 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 31 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:26,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 53 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:11:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 16:11:26,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-13 16:11:26,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 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 16:11:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-13 16:11:26,365 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 23 [2024-11-13 16:11:26,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:26,365 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-13 16:11:26,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-13 16:11:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 16:11:26,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:26,366 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:26,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 16:11:26,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 16:11:26,570 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:26,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:26,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1111160763, now seen corresponding path program 7 times [2024-11-13 16:11:26,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:26,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186158650] [2024-11-13 16:11:26,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:26,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:26,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:26,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186158650] [2024-11-13 16:11:26,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186158650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:26,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617631027] [2024-11-13 16:11:26,723 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:11:26,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:26,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:26,725 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:26,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:11:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:26,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 16:11:26,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:26,958 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:27,087 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:27,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617631027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:27,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:27,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-13 16:11:27,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337925343] [2024-11-13 16:11:27,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:27,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 16:11:27,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:27,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 16:11:27,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-13 16:11:27,091 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 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 16:11:27,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:27,228 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2024-11-13 16:11:27,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 16:11:27,229 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 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) Word has length 26 [2024-11-13 16:11:27,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:27,229 INFO L225 Difference]: With dead ends: 53 [2024-11-13 16:11:27,229 INFO L226 Difference]: Without dead ends: 33 [2024-11-13 16:11:27,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:11:27,230 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:27,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 41 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:11:27,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-13 16:11:27,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2024-11-13 16:11:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 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 16:11:27,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2024-11-13 16:11:27,243 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 26 [2024-11-13 16:11:27,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:27,243 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2024-11-13 16:11:27,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 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 16:11:27,244 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2024-11-13 16:11:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 16:11:27,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:27,244 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:27,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 16:11:27,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 16:11:27,450 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:27,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1031669765, now seen corresponding path program 8 times [2024-11-13 16:11:27,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:27,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102682100] [2024-11-13 16:11:27,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:27,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:28,399 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:28,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:28,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102682100] [2024-11-13 16:11:28,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102682100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:28,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516343844] [2024-11-13 16:11:28,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:11:28,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:28,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:28,403 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:28,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 16:11:28,512 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:11:28,513 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:28,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 16:11:28,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:28,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:11:28,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:11:28,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:11:28,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:11:29,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:11:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:29,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:30,255 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:30,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516343844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:30,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:30,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 17] total 43 [2024-11-13 16:11:30,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990552065] [2024-11-13 16:11:30,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:30,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-13 16:11:30,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:30,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-13 16:11:30,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1662, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 16:11:30,258 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:31,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:31,388 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2024-11-13 16:11:31,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 16:11:31,389 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-13 16:11:31,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:31,390 INFO L225 Difference]: With dead ends: 51 [2024-11-13 16:11:31,390 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 16:11:31,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=232, Invalid=2524, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 16:11:31,392 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:31,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 89 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:11:31,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 16:11:31,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2024-11-13 16:11:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 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 16:11:31,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2024-11-13 16:11:31,407 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 27 [2024-11-13 16:11:31,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:31,407 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2024-11-13 16:11:31,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:31,407 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2024-11-13 16:11:31,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 16:11:31,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:31,408 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:31,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 16:11:31,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 16:11:31,613 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:31,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:31,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1432551173, now seen corresponding path program 9 times [2024-11-13 16:11:31,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:31,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812515454] [2024-11-13 16:11:31,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:31,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:31,844 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:31,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:31,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812515454] [2024-11-13 16:11:31,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812515454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:31,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338922461] [2024-11-13 16:11:31,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:11:31,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:31,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:31,847 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:31,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 16:11:32,017 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-13 16:11:32,018 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:32,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 16:11:32,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:32,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:32,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338922461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:32,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:32,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-13 16:11:32,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039759268] [2024-11-13 16:11:32,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:32,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 16:11:32,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:32,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 16:11:32,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:11:32,342 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:32,684 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2024-11-13 16:11:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 16:11:32,686 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-13 16:11:32,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:32,687 INFO L225 Difference]: With dead ends: 57 [2024-11-13 16:11:32,687 INFO L226 Difference]: Without dead ends: 53 [2024-11-13 16:11:32,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2024-11-13 16:11:32,688 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:32,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 40 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:11:32,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-13 16:11:32,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 31. [2024-11-13 16:11:32,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 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 16:11:32,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-13 16:11:32,709 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 28 [2024-11-13 16:11:32,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:32,709 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-13 16:11:32,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:32,709 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-13 16:11:32,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 16:11:32,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:32,713 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:32,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 16:11:32,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 16:11:32,917 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:32,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:32,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1851019113, now seen corresponding path program 10 times [2024-11-13 16:11:32,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:32,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473187940] [2024-11-13 16:11:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:32,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:33,155 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:33,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:33,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473187940] [2024-11-13 16:11:33,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473187940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:33,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391201735] [2024-11-13 16:11:33,155 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:11:33,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:33,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:33,160 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:33,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 16:11:33,307 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:11:33,307 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:33,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 16:11:33,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:33,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:33,627 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:33,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391201735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:33,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:33,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-13 16:11:33,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76782693] [2024-11-13 16:11:33,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:33,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 16:11:33,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:33,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 16:11:33,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:11:33,630 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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 16:11:33,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:33,831 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2024-11-13 16:11:33,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:11:33,832 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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 30 [2024-11-13 16:11:33,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:33,834 INFO L225 Difference]: With dead ends: 60 [2024-11-13 16:11:33,834 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 16:11:33,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 44 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-13 16:11:33,835 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 33 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:33,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 41 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:11:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 16:11:33,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2024-11-13 16:11:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 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 16:11:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-11-13 16:11:33,852 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 30 [2024-11-13 16:11:33,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:33,852 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-11-13 16:11:33,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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 16:11:33,853 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-11-13 16:11:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 16:11:33,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:33,855 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:33,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-13 16:11:34,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 16:11:34,056 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:34,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:34,056 INFO L85 PathProgramCache]: Analyzing trace with hash -419007457, now seen corresponding path program 11 times [2024-11-13 16:11:34,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:34,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070344602] [2024-11-13 16:11:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:34,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:35,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:35,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070344602] [2024-11-13 16:11:35,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070344602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:35,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201774413] [2024-11-13 16:11:35,475 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:11:35,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:35,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:35,478 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:35,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 16:11:35,630 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-13 16:11:35,630 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:35,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-13 16:11:35,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:35,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:11:36,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:11:36,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:11:36,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:11:36,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:11:37,450 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2024-11-13 16:11:37,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 16 [2024-11-13 16:11:37,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:11:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:37,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:39,589 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2024-11-13 16:11:39,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 21 [2024-11-13 16:11:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:40,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201774413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:40,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:40,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 69 [2024-11-13 16:11:40,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584485869] [2024-11-13 16:11:40,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:40,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-13 16:11:40,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:40,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-13 16:11:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=4310, Unknown=0, NotChecked=0, Total=4692 [2024-11-13 16:11:40,451 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 69 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 69 states have internal predecessors, (80), 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 16:11:57,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:57,177 INFO L93 Difference]: Finished difference Result 105 states and 134 transitions. [2024-11-13 16:11:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-13 16:11:57,178 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 69 states have internal predecessors, (80), 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 16:11:57,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:57,179 INFO L225 Difference]: With dead ends: 105 [2024-11-13 16:11:57,179 INFO L226 Difference]: Without dead ends: 93 [2024-11-13 16:11:57,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3698 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=1723, Invalid=12319, Unknown=0, NotChecked=0, Total=14042 [2024-11-13 16:11:57,182 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 65 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:57,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 108 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 16:11:57,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-13 16:11:57,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 75. [2024-11-13 16:11:57,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 74 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:57,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2024-11-13 16:11:57,229 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 31 [2024-11-13 16:11:57,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:57,230 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2024-11-13 16:11:57,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 69 states have internal predecessors, (80), 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 16:11:57,230 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2024-11-13 16:11:57,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 16:11:57,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:57,233 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:57,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 16:11:57,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 16:11:57,434 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:57,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:57,435 INFO L85 PathProgramCache]: Analyzing trace with hash 261050913, now seen corresponding path program 4 times [2024-11-13 16:11:57,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:57,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820970887] [2024-11-13 16:11:57,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:57,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 16:11:57,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:57,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820970887] [2024-11-13 16:11:57,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820970887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:57,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139143324] [2024-11-13 16:11:57,966 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:11:57,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:57,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:57,969 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:57,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 16:11:58,106 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:11:58,106 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:58,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 16:11:58,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:58,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-13 16:11:58,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-13 16:11:58,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:11:58,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-13 16:11:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 16:11:58,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 16:11:58,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139143324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:58,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:58,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 22 [2024-11-13 16:11:58,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331776499] [2024-11-13 16:11:58,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:58,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 16:11:58,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:58,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 16:11:58,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-11-13 16:11:58,623 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:00,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:00,358 INFO L93 Difference]: Finished difference Result 137 states and 174 transitions. [2024-11-13 16:12:00,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 16:12:00,359 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-13 16:12:00,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:00,360 INFO L225 Difference]: With dead ends: 137 [2024-11-13 16:12:00,360 INFO L226 Difference]: Without dead ends: 100 [2024-11-13 16:12:00,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=424, Invalid=2228, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 16:12:00,362 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 56 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:00,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 64 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:12:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-13 16:12:00,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2024-11-13 16:12:00,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.205128205128205) internal successors, (94), 78 states have internal predecessors, (94), 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 16:12:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2024-11-13 16:12:00,409 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 31 [2024-11-13 16:12:00,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:00,410 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2024-11-13 16:12:00,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:00,410 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2024-11-13 16:12:00,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 16:12:00,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:00,411 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:00,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 16:12:00,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 16:12:00,613 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:00,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:00,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2070354391, now seen corresponding path program 12 times [2024-11-13 16:12:00,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:00,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323678896] [2024-11-13 16:12:00,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:00,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:00,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:00,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323678896] [2024-11-13 16:12:00,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323678896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:00,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203725124] [2024-11-13 16:12:00,918 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:12:00,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:00,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:00,922 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:00,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 16:12:01,109 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-13 16:12:01,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:12:01,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:12:01,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:01,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:12:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:01,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203725124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:12:01,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:12:01,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-13 16:12:01,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045484666] [2024-11-13 16:12:01,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:12:01,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 16:12:01,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:01,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 16:12:01,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-13 16:12:01,555 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 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 16:12:02,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:02,096 INFO L93 Difference]: Finished difference Result 99 states and 117 transitions. [2024-11-13 16:12:02,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 16:12:02,096 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 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 32 [2024-11-13 16:12:02,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:02,097 INFO L225 Difference]: With dead ends: 99 [2024-11-13 16:12:02,097 INFO L226 Difference]: Without dead ends: 95 [2024-11-13 16:12:02,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 16:12:02,098 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 33 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:02,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 48 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:12:02,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-13 16:12:02,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 79. [2024-11-13 16:12:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.205128205128205) internal successors, (94), 78 states have internal predecessors, (94), 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 16:12:02,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2024-11-13 16:12:02,148 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 32 [2024-11-13 16:12:02,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:02,148 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2024-11-13 16:12:02,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 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 16:12:02,148 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2024-11-13 16:12:02,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 16:12:02,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:02,149 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:02,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 16:12:02,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:02,350 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:02,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:02,350 INFO L85 PathProgramCache]: Analyzing trace with hash -658273669, now seen corresponding path program 13 times [2024-11-13 16:12:02,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:02,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269518673] [2024-11-13 16:12:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:02,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:03,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:03,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269518673] [2024-11-13 16:12:03,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269518673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:03,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097343869] [2024-11-13 16:12:03,994 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:12:03,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:03,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:03,996 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:03,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 16:12:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:04,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-13 16:12:04,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:04,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:12:04,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:12:04,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:12:04,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:12:04,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:12:05,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:12:05,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:12:05,443 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:05,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:12:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:07,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097343869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:12:07,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:12:07,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23, 23] total 61 [2024-11-13 16:12:07,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702179822] [2024-11-13 16:12:07,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:12:07,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-13 16:12:07,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:07,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-13 16:12:07,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=3450, Unknown=0, NotChecked=0, Total=3660 [2024-11-13 16:12:07,318 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand has 61 states, 61 states have (on average 1.360655737704918) internal successors, (83), 61 states have internal predecessors, (83), 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 16:12:10,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:10,111 INFO L93 Difference]: Finished difference Result 108 states and 127 transitions. [2024-11-13 16:12:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 16:12:10,112 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.360655737704918) internal successors, (83), 61 states have internal predecessors, (83), 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 35 [2024-11-13 16:12:10,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:10,112 INFO L225 Difference]: With dead ends: 108 [2024-11-13 16:12:10,112 INFO L226 Difference]: Without dead ends: 104 [2024-11-13 16:12:10,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=335, Invalid=5215, Unknown=0, NotChecked=0, Total=5550 [2024-11-13 16:12:10,114 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:10,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 145 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 16:12:10,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-13 16:12:10,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2024-11-13 16:12:10,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.1914893617021276) internal successors, (112), 94 states have internal predecessors, (112), 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 16:12:10,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 112 transitions. [2024-11-13 16:12:10,157 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 112 transitions. Word has length 35 [2024-11-13 16:12:10,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:10,158 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 112 transitions. [2024-11-13 16:12:10,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.360655737704918) internal successors, (83), 61 states have internal predecessors, (83), 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 16:12:10,158 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 112 transitions. [2024-11-13 16:12:10,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 16:12:10,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:10,159 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:10,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 16:12:10,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-13 16:12:10,360 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:10,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:10,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1537611899, now seen corresponding path program 14 times [2024-11-13 16:12:10,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:10,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039161861] [2024-11-13 16:12:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:10,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 15 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:10,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:10,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039161861] [2024-11-13 16:12:10,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039161861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:10,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737120271] [2024-11-13 16:12:10,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:12:10,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:10,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:10,737 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:10,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 16:12:10,903 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:12:10,903 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:12:10,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:12:10,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:11,171 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 21 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:11,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:12:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 21 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:11,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737120271] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:12:11,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:12:11,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-13 16:12:11,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762420162] [2024-11-13 16:12:11,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:12:11,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 16:12:11,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:11,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 16:12:11,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-13 16:12:11,411 INFO L87 Difference]: Start difference. First operand 95 states and 112 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:12,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:12,187 INFO L93 Difference]: Finished difference Result 138 states and 162 transitions. [2024-11-13 16:12:12,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 16:12:12,187 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-13 16:12:12,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:12,188 INFO L225 Difference]: With dead ends: 138 [2024-11-13 16:12:12,189 INFO L226 Difference]: Without dead ends: 134 [2024-11-13 16:12:12,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 49 SyntacticMatches, 14 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=352, Invalid=1208, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 16:12:12,190 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 38 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:12,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 59 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:12:12,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-13 16:12:12,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 82. [2024-11-13 16:12:12,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 81 states have internal predecessors, (98), 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 16:12:12,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2024-11-13 16:12:12,222 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 36 [2024-11-13 16:12:12,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:12,222 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2024-11-13 16:12:12,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:12,222 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2024-11-13 16:12:12,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 16:12:12,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:12,223 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:12,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-13 16:12:12,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:12,424 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:12,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:12,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1728818409, now seen corresponding path program 15 times [2024-11-13 16:12:12,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:12,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890626387] [2024-11-13 16:12:12,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:12,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:12,768 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 54 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:12,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:12,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890626387] [2024-11-13 16:12:12,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890626387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:12,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053547106] [2024-11-13 16:12:12,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:12:12,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:12,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:12,772 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:12,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 16:12:12,990 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-13 16:12:12,990 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:12:12,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:12:12,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 70 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:13,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:12:13,392 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 70 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:13,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053547106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:12:13,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:12:13,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-13 16:12:13,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447318090] [2024-11-13 16:12:13,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:12:13,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 16:12:13,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:13,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 16:12:13,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-13 16:12:13,394 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 26 states have internal predecessors, (64), 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 16:12:13,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:13,684 INFO L93 Difference]: Finished difference Result 141 states and 166 transitions. [2024-11-13 16:12:13,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 16:12:13,686 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 26 states have internal predecessors, (64), 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 38 [2024-11-13 16:12:13,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:13,686 INFO L225 Difference]: With dead ends: 141 [2024-11-13 16:12:13,686 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 16:12:13,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 54 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-13 16:12:13,689 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 50 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:13,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 47 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:12:13,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 16:12:13,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2024-11-13 16:12:13,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 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 16:12:13,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-13 16:12:13,711 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 38 [2024-11-13 16:12:13,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:13,711 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-13 16:12:13,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 26 states have internal predecessors, (64), 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 16:12:13,711 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-13 16:12:13,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 16:12:13,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:13,712 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:13,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 16:12:13,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:13,913 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:13,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:13,913 INFO L85 PathProgramCache]: Analyzing trace with hash 369146783, now seen corresponding path program 16 times [2024-11-13 16:12:13,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:13,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108272018] [2024-11-13 16:12:13,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:13,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:15,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:15,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108272018] [2024-11-13 16:12:15,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108272018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:15,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138939345] [2024-11-13 16:12:15,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:12:15,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:15,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:15,865 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:15,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 16:12:16,066 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:12:16,066 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:12:16,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-13 16:12:16,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:16,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:12:16,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:12:16,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:12:17,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:12:17,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:12:18,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:12:19,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:12:20,504 INFO L349 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2024-11-13 16:12:20,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 78 treesize of output 22 [2024-11-13 16:12:20,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:12:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:20,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:12:27,174 INFO L349 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2024-11-13 16:12:27,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 85 treesize of output 29 [2024-11-13 16:12:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:28,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138939345] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:12:28,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:12:28,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 93 [2024-11-13 16:12:28,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091545875] [2024-11-13 16:12:28,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:12:28,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-11-13 16:12:28,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:28,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-11-13 16:12:28,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=7934, Unknown=0, NotChecked=0, Total=8556 [2024-11-13 16:12:28,832 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 93 states, 93 states have (on average 1.118279569892473) internal successors, (104), 93 states have internal predecessors, (104), 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 16:12:52,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:12:58,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:13:03,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:13:04,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:13:07,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:13:39,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:13:44,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:13:49,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:13:50,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:13:52,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:14:16,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:14:31,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-13 16:14:42,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:14:44,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:14:50,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:14:51,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:15:08,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:08,500 INFO L93 Difference]: Finished difference Result 158 states and 201 transitions. [2024-11-13 16:15:08,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-13 16:15:08,501 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.118279569892473) internal successors, (104), 93 states have internal predecessors, (104), 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 39 [2024-11-13 16:15:08,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:08,502 INFO L225 Difference]: With dead ends: 158 [2024-11-13 16:15:08,502 INFO L226 Difference]: Without dead ends: 143 [2024-11-13 16:15:08,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7910 ImplicationChecksByTransitivity, 88.8s TimeCoverageRelationStatistics Valid=3442, Invalid=24950, Unknown=0, NotChecked=0, Total=28392 [2024-11-13 16:15:08,504 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 89 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2247 mSolverCounterSat, 389 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 2247 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:08,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 151 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 2247 Invalid, 4 Unknown, 0 Unchecked, 82.0s Time] [2024-11-13 16:15:08,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-13 16:15:08,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 112. [2024-11-13 16:15:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.2612612612612613) internal successors, (140), 111 states have internal predecessors, (140), 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 16:15:08,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 140 transitions. [2024-11-13 16:15:08,556 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 140 transitions. Word has length 39 [2024-11-13 16:15:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:08,556 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 140 transitions. [2024-11-13 16:15:08,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.118279569892473) internal successors, (104), 93 states have internal predecessors, (104), 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 16:15:08,556 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 140 transitions. [2024-11-13 16:15:08,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 16:15:08,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:08,557 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:15:08,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 16:15:08,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:08,757 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:15:08,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:08,758 INFO L85 PathProgramCache]: Analyzing trace with hash 627312221, now seen corresponding path program 5 times [2024-11-13 16:15:08,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:15:08,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100250049] [2024-11-13 16:15:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:08,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:15:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:09,563 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 15 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:09,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:15:09,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100250049] [2024-11-13 16:15:09,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100250049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:15:09,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179178781] [2024-11-13 16:15:09,564 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:15:09,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:09,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:09,566 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:09,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 16:15:10,014 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-13 16:15:10,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:15:10,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 16:15:10,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:10,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:15:10,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:15:10,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-13 16:15:10,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:15:10,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-13 16:15:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 38 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 16:15:10,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:15:11,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2024-11-13 16:15:11,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 406 treesize of output 390 [2024-11-13 16:15:11,356 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 54 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 16:15:11,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179178781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:15:11,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:15:11,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 16] total 46 [2024-11-13 16:15:11,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120558777] [2024-11-13 16:15:11,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:15:11,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 16:15:11,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:15:11,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 16:15:11,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1830, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 16:15:11,358 INFO L87 Difference]: Start difference. First operand 112 states and 140 transitions. Second operand has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 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 16:15:12,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:12,259 INFO L93 Difference]: Finished difference Result 183 states and 234 transitions. [2024-11-13 16:15:12,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 16:15:12,260 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 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 39 [2024-11-13 16:15:12,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:12,261 INFO L225 Difference]: With dead ends: 183 [2024-11-13 16:15:12,261 INFO L226 Difference]: Without dead ends: 121 [2024-11-13 16:15:12,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=418, Invalid=2662, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 16:15:12,263 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 81 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:12,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 86 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:15:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-13 16:15:12,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 112. [2024-11-13 16:15:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.2432432432432432) internal successors, (138), 111 states have internal predecessors, (138), 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 16:15:12,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 138 transitions. [2024-11-13 16:15:12,328 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 138 transitions. Word has length 39 [2024-11-13 16:15:12,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:12,328 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 138 transitions. [2024-11-13 16:15:12,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.934782608695652) internal successors, (89), 46 states have internal predecessors, (89), 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 16:15:12,328 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 138 transitions. [2024-11-13 16:15:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 16:15:12,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:12,329 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:15:12,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 16:15:12,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 16:15:12,529 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:15:12,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:12,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1168999337, now seen corresponding path program 17 times [2024-11-13 16:15:12,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:15:12,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193367018] [2024-11-13 16:15:12,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:12,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:15:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:12,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:15:12,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193367018] [2024-11-13 16:15:12,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193367018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:15:12,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366136413] [2024-11-13 16:15:12,975 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:15:12,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:12,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:12,977 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:12,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 16:15:13,354 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-13 16:15:13,354 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:15:13,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 16:15:13,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 28 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:13,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:15:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 28 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:13,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366136413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:15:13,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:15:13,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-13 16:15:13,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53083530] [2024-11-13 16:15:13,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:15:13,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 16:15:13,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:15:13,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 16:15:13,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-13 16:15:13,987 INFO L87 Difference]: Start difference. First operand 112 states and 138 transitions. Second operand has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 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 16:15:14,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:14,732 INFO L93 Difference]: Finished difference Result 145 states and 177 transitions. [2024-11-13 16:15:14,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 16:15:14,733 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 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 40 [2024-11-13 16:15:14,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:14,734 INFO L225 Difference]: With dead ends: 145 [2024-11-13 16:15:14,734 INFO L226 Difference]: Without dead ends: 141 [2024-11-13 16:15:14,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 54 SyntacticMatches, 16 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=440, Invalid=1540, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 16:15:14,735 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 44 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:14,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 45 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:15:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-13 16:15:14,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 115. [2024-11-13 16:15:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.2456140350877194) internal successors, (142), 114 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:15:14,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 142 transitions. [2024-11-13 16:15:14,811 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 142 transitions. Word has length 40 [2024-11-13 16:15:14,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:14,812 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 142 transitions. [2024-11-13 16:15:14,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 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 16:15:14,812 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 142 transitions. [2024-11-13 16:15:14,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 16:15:14,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:14,813 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:15:14,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-13 16:15:15,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:15,018 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:15:15,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:15,018 INFO L85 PathProgramCache]: Analyzing trace with hash -691536645, now seen corresponding path program 18 times [2024-11-13 16:15:15,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:15:15,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332765115] [2024-11-13 16:15:15,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:15,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:15:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:15:17,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:15:17,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332765115] [2024-11-13 16:15:17,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332765115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:15:17,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709920364] [2024-11-13 16:15:17,414 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:15:17,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:17,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:17,416 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:17,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 16:15:17,748 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-13 16:15:17,748 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:15:17,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-13 16:15:17,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:17,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:15:17,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:15:18,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:15:18,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:15:18,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:15:19,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:15:19,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:15:20,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:15:20,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:15:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 8 proven. 92 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 16:15:20,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:15:25,381 INFO L349 Elim1Store]: treesize reduction 150, result has 0.7 percent of original size [2024-11-13 16:15:25,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 104 treesize of output 33 [2024-11-13 16:15:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 16:15:25,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709920364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:15:25,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:15:25,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 31, 32] total 92 [2024-11-13 16:15:25,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243174071] [2024-11-13 16:15:25,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:15:25,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-11-13 16:15:25,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:15:25,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-11-13 16:15:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=7795, Unknown=0, NotChecked=0, Total=8372 [2024-11-13 16:15:25,749 INFO L87 Difference]: Start difference. First operand 115 states and 142 transitions. Second operand has 92 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 92 states have internal predecessors, (103), 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 16:16:02,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:02,919 INFO L93 Difference]: Finished difference Result 209 states and 265 transitions. [2024-11-13 16:16:02,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-13 16:16:02,920 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 92 states have internal predecessors, (103), 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 43 [2024-11-13 16:16:02,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:02,921 INFO L225 Difference]: With dead ends: 209 [2024-11-13 16:16:02,921 INFO L226 Difference]: Without dead ends: 204 [2024-11-13 16:16:02,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9653 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=3756, Invalid=32534, Unknown=0, NotChecked=0, Total=36290 [2024-11-13 16:16:02,923 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 116 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 3692 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 4043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 3692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:16:02,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 181 Invalid, 4043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 3692 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-13 16:16:02,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-13 16:16:03,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 178. [2024-11-13 16:16:03,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.2542372881355932) internal successors, (222), 177 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:16:03,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 222 transitions. [2024-11-13 16:16:03,037 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 222 transitions. Word has length 43 [2024-11-13 16:16:03,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:03,038 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 222 transitions. [2024-11-13 16:16:03,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 92 states have internal predecessors, (103), 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 16:16:03,038 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 222 transitions. [2024-11-13 16:16:03,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 16:16:03,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:03,039 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:16:03,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 16:16:03,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:03,240 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:16:03,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -433371207, now seen corresponding path program 6 times [2024-11-13 16:16:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:16:03,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270319300] [2024-11-13 16:16:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:03,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:16:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 21 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:04,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:16:04,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270319300] [2024-11-13 16:16:04,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270319300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:16:04,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444091895] [2024-11-13 16:16:04,196 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:16:04,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:04,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:04,199 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:04,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 16:16:04,541 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-13 16:16:04,541 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:16:04,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 16:16:04,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:04,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 16:16:04,845 INFO L349 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2024-11-13 16:16:04,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2024-11-13 16:16:04,960 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2024-11-13 16:16:04,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 25 [2024-11-13 16:16:05,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 16:16:05,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 23 [2024-11-13 16:16:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 60 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:06,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:16:07,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-13 16:16:07,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2024-11-13 16:16:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 82 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:07,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444091895] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:16:07,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:16:07,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 56 [2024-11-13 16:16:07,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113653210] [2024-11-13 16:16:07,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:16:07,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 16:16:07,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:16:07,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 16:16:07,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=2663, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 16:16:07,417 INFO L87 Difference]: Start difference. First operand 178 states and 222 transitions. Second operand has 56 states, 56 states have (on average 1.8928571428571428) internal successors, (106), 56 states have internal predecessors, (106), 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 16:16:10,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:16:16,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 16:16:22,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:22,977 INFO L93 Difference]: Finished difference Result 252 states and 310 transitions. [2024-11-13 16:16:22,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-13 16:16:22,978 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.8928571428571428) internal successors, (106), 56 states have internal predecessors, (106), 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 43 [2024-11-13 16:16:22,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:22,979 INFO L225 Difference]: With dead ends: 252 [2024-11-13 16:16:22,979 INFO L226 Difference]: Without dead ends: 72 [2024-11-13 16:16:22,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4075 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2198, Invalid=12564, Unknown=0, NotChecked=0, Total=14762 [2024-11-13 16:16:22,980 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 347 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 119 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:16:22,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 70 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1121 Invalid, 8 Unknown, 0 Unchecked, 10.1s Time] [2024-11-13 16:16:22,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-13 16:16:23,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-13 16:16:23,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 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 16:16:23,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-11-13 16:16:23,028 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 43 [2024-11-13 16:16:23,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:23,028 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-11-13 16:16:23,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.8928571428571428) internal successors, (106), 56 states have internal predecessors, (106), 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 16:16:23,029 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-11-13 16:16:23,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 16:16:23,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:23,029 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:16:23,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 16:16:23,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 16:16:23,230 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:16:23,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:23,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1152572447, now seen corresponding path program 19 times [2024-11-13 16:16:23,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:16:23,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868815334] [2024-11-13 16:16:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:23,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:16:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 379 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:24,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:16:24,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868815334] [2024-11-13 16:16:24,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868815334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:16:24,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225470417] [2024-11-13 16:16:24,192 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:16:24,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:24,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:24,194 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:24,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 16:16:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:24,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 16:16:24,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:24,894 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 341 proven. 45 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-13 16:16:24,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:16:25,187 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 341 proven. 45 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-13 16:16:25,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225470417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:16:25,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:16:25,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 23, 23] total 42 [2024-11-13 16:16:25,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429942013] [2024-11-13 16:16:25,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:16:25,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 16:16:25,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:16:25,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 16:16:25,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=1326, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 16:16:25,189 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 42 states, 42 states have (on average 2.5714285714285716) internal successors, (108), 42 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:16:25,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:25,581 INFO L93 Difference]: Finished difference Result 130 states and 132 transitions. [2024-11-13 16:16:25,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 16:16:25,582 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.5714285714285716) internal successors, (108), 42 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-13 16:16:25,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:25,583 INFO L225 Difference]: With dead ends: 130 [2024-11-13 16:16:25,583 INFO L226 Difference]: Without dead ends: 73 [2024-11-13 16:16:25,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 111 SyntacticMatches, 19 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=576, Invalid=1974, Unknown=0, NotChecked=0, Total=2550 [2024-11-13 16:16:25,584 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 94 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:16:25,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 38 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:16:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-13 16:16:25,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-13 16:16:25,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 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 16:16:25,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2024-11-13 16:16:25,620 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 71 [2024-11-13 16:16:25,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:25,620 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2024-11-13 16:16:25,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.5714285714285716) internal successors, (108), 42 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:16:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2024-11-13 16:16:25,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-13 16:16:25,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:25,621 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:16:25,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 16:16:25,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 16:16:25,821 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:16:25,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:25,822 INFO L85 PathProgramCache]: Analyzing trace with hash 967638057, now seen corresponding path program 20 times [2024-11-13 16:16:25,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:16:25,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326875386] [2024-11-13 16:16:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:25,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:16:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 379 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:26,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:16:26,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326875386] [2024-11-13 16:16:26,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326875386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:16:26,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075653935] [2024-11-13 16:16:26,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:16:26,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:26,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:26,812 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:26,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 16:16:27,064 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:16:27,064 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:16:27,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 16:16:27,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 362 proven. 55 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-13 16:16:27,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:16:27,988 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 362 proven. 55 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-13 16:16:27,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075653935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:16:27,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:16:27,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 25, 25] total 44 [2024-11-13 16:16:27,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907056644] [2024-11-13 16:16:27,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:16:27,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-13 16:16:27,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:16:27,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-13 16:16:27,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=1458, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 16:16:27,990 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 44 states, 44 states have (on average 2.5454545454545454) internal successors, (112), 44 states have internal predecessors, (112), 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 16:16:28,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:28,458 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2024-11-13 16:16:28,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 16:16:28,459 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.5454545454545454) internal successors, (112), 44 states have internal predecessors, (112), 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 72 [2024-11-13 16:16:28,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:28,460 INFO L225 Difference]: With dead ends: 131 [2024-11-13 16:16:28,460 INFO L226 Difference]: Without dead ends: 74 [2024-11-13 16:16:28,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 110 SyntacticMatches, 21 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=649, Invalid=2213, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 16:16:28,461 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 92 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:16:28,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 44 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:16:28,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-13 16:16:28,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-13 16:16:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 73 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:16:28,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2024-11-13 16:16:28,501 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 72 [2024-11-13 16:16:28,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:28,501 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2024-11-13 16:16:28,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.5454545454545454) internal successors, (112), 44 states have internal predecessors, (112), 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 16:16:28,502 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2024-11-13 16:16:28,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 16:16:28,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:28,502 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:16:28,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-13 16:16:28,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 16:16:28,703 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:16:28,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:28,703 INFO L85 PathProgramCache]: Analyzing trace with hash -470360737, now seen corresponding path program 21 times [2024-11-13 16:16:28,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:16:28,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762292478] [2024-11-13 16:16:28,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:28,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:16:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 379 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:29,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:16:29,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762292478] [2024-11-13 16:16:29,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762292478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:16:29,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926305141] [2024-11-13 16:16:29,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:16:29,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:29,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:29,695 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:29,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 16:16:31,117 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-13 16:16:31,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:16:31,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 16:16:31,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 425 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:32,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:16:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 425 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:32,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926305141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:16:32,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:16:32,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 62 [2024-11-13 16:16:32,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601808629] [2024-11-13 16:16:32,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:16:32,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-13 16:16:32,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:16:32,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-13 16:16:32,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=941, Invalid=2841, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 16:16:32,787 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 62 states, 62 states have (on average 2.4516129032258065) internal successors, (152), 62 states have internal predecessors, (152), 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 16:16:33,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:16:33,897 INFO L93 Difference]: Finished difference Result 189 states and 196 transitions. [2024-11-13 16:16:33,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-13 16:16:33,898 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.4516129032258065) internal successors, (152), 62 states have internal predecessors, (152), 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 73 [2024-11-13 16:16:33,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:16:33,899 INFO L225 Difference]: With dead ends: 189 [2024-11-13 16:16:33,899 INFO L226 Difference]: Without dead ends: 82 [2024-11-13 16:16:33,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 99 SyntacticMatches, 17 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3131 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1745, Invalid=6265, Unknown=0, NotChecked=0, Total=8010 [2024-11-13 16:16:33,901 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 275 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:16:33,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 54 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:16:33,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-13 16:16:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2024-11-13 16:16:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:16:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-11-13 16:16:33,954 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 73 [2024-11-13 16:16:33,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:16:33,954 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-11-13 16:16:33,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.4516129032258065) internal successors, (152), 62 states have internal predecessors, (152), 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 16:16:33,954 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-11-13 16:16:33,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 16:16:33,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:16:33,955 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:16:33,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-13 16:16:34,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:34,156 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:16:34,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:16:34,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1831797023, now seen corresponding path program 22 times [2024-11-13 16:16:34,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:16:34,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881451338] [2024-11-13 16:16:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:34,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:16:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:41,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:16:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881451338] [2024-11-13 16:16:41,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881451338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:16:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793762615] [2024-11-13 16:16:41,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:16:41,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:16:41,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:16:41,247 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:16:41,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 16:16:43,021 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:16:43,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:16:43,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 190 conjuncts are in the unsatisfiable core [2024-11-13 16:16:43,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:43,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:16:45,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:45,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:46,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:46,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:47,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:47,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:48,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:48,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:49,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:50,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:51,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:52,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:52,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:53,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:54,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:55,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:56,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:16:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:16:57,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:17:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:17:14,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793762615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:17:14,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:17:14,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 58, 56] total 180 [2024-11-13 16:17:14,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703633641] [2024-11-13 16:17:14,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:17:14,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 180 states [2024-11-13 16:17:14,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:17:14,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2024-11-13 16:17:14,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=753, Invalid=31467, Unknown=0, NotChecked=0, Total=32220 [2024-11-13 16:17:14,671 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 180 states, 180 states have (on average 1.25) internal successors, (225), 180 states have internal predecessors, (225), 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 16:17:44,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:17:44,287 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2024-11-13 16:17:44,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-13 16:17:44,287 INFO L78 Accepts]: Start accepts. Automaton has has 180 states, 180 states have (on average 1.25) internal successors, (225), 180 states have internal predecessors, (225), 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 79 [2024-11-13 16:17:44,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:17:44,289 INFO L225 Difference]: With dead ends: 140 [2024-11-13 16:17:44,289 INFO L226 Difference]: Without dead ends: 136 [2024-11-13 16:17:44,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18327 ImplicationChecksByTransitivity, 51.2s TimeCoverageRelationStatistics Valid=1722, Invalid=52334, Unknown=0, NotChecked=0, Total=54056 [2024-11-13 16:17:44,292 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 137 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6770 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 7065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 6770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:17:44,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 207 Invalid, 7065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 6770 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2024-11-13 16:17:44,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-13 16:17:44,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 85. [2024-11-13 16:17:44,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 84 states have internal predecessors, (87), 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 16:17:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2024-11-13 16:17:44,357 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 79 [2024-11-13 16:17:44,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:17:44,357 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2024-11-13 16:17:44,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 180 states, 180 states have (on average 1.25) internal successors, (225), 180 states have internal predecessors, (225), 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 16:17:44,358 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2024-11-13 16:17:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 16:17:44,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:17:44,358 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:17:44,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 16:17:44,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:17:44,559 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:17:44,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:17:44,560 INFO L85 PathProgramCache]: Analyzing trace with hash 548763433, now seen corresponding path program 23 times [2024-11-13 16:17:44,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:17:44,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133506410] [2024-11-13 16:17:44,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:17:44,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:17:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:17:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 136 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:17:46,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:17:46,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133506410] [2024-11-13 16:17:46,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133506410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:17:46,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195080845] [2024-11-13 16:17:46,026 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:17:46,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:17:46,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:17:46,028 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:17:46,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 16:18:17,869 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-13 16:18:17,869 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:18:17,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 16:18:17,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:18:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 153 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:18,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:18:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 153 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:19,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195080845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:18:19,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:18:19,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2024-11-13 16:18:19,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126080140] [2024-11-13 16:18:19,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:18:19,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-13 16:18:19,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:18:19,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-13 16:18:19,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=2619, Unknown=0, NotChecked=0, Total=3422 [2024-11-13 16:18:19,292 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand has 59 states, 59 states have (on average 2.3559322033898304) internal successors, (139), 59 states have internal predecessors, (139), 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 16:18:20,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:20,926 INFO L93 Difference]: Finished difference Result 143 states and 145 transitions. [2024-11-13 16:18:20,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-13 16:18:20,927 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.3559322033898304) internal successors, (139), 59 states have internal predecessors, (139), 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 80 [2024-11-13 16:18:20,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:20,928 INFO L225 Difference]: With dead ends: 143 [2024-11-13 16:18:20,928 INFO L226 Difference]: Without dead ends: 139 [2024-11-13 16:18:20,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 104 SyntacticMatches, 36 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3741 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1870, Invalid=7060, Unknown=0, NotChecked=0, Total=8930 [2024-11-13 16:18:20,929 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 48 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:18:20,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 47 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 16:18:20,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-13 16:18:20,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 83. [2024-11-13 16:18:20,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 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 16:18:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2024-11-13 16:18:20,994 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2024-11-13 16:18:20,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:20,995 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2024-11-13 16:18:20,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.3559322033898304) internal successors, (139), 59 states have internal predecessors, (139), 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 16:18:20,995 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2024-11-13 16:18:20,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-13 16:18:20,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:20,995 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:21,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 16:18:21,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:21,196 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:18:21,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:21,196 INFO L85 PathProgramCache]: Analyzing trace with hash 749667269, now seen corresponding path program 24 times [2024-11-13 16:18:21,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:21,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016372109] [2024-11-13 16:18:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:21,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 428 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:22,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:18:22,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016372109] [2024-11-13 16:18:22,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016372109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:18:22,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790645150] [2024-11-13 16:18:22,300 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:18:22,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:22,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:18:22,302 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:18:22,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 16:18:25,189 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-13 16:18:25,189 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:18:25,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 16:18:25,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:18:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 477 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:26,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:18:26,731 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 477 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:26,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790645150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:18:26,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:18:26,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2024-11-13 16:18:26,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818840079] [2024-11-13 16:18:26,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:18:26,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-13 16:18:26,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:18:26,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-13 16:18:26,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=2619, Unknown=0, NotChecked=0, Total=3422 [2024-11-13 16:18:26,733 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 59 states, 59 states have (on average 2.389830508474576) internal successors, (141), 59 states have internal predecessors, (141), 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 16:18:27,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:27,412 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2024-11-13 16:18:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-13 16:18:27,412 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.389830508474576) internal successors, (141), 59 states have internal predecessors, (141), 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 82 [2024-11-13 16:18:27,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:27,413 INFO L225 Difference]: With dead ends: 146 [2024-11-13 16:18:27,413 INFO L226 Difference]: Without dead ends: 86 [2024-11-13 16:18:27,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 109 SyntacticMatches, 35 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2655 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1347, Invalid=4353, Unknown=0, NotChecked=0, Total=5700 [2024-11-13 16:18:27,414 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 144 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:18:27,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 74 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:18:27,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-13 16:18:27,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2024-11-13 16:18:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 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 16:18:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2024-11-13 16:18:27,463 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 82 [2024-11-13 16:18:27,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:27,463 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2024-11-13 16:18:27,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.389830508474576) internal successors, (141), 59 states have internal predecessors, (141), 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 16:18:27,464 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2024-11-13 16:18:27,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 16:18:27,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:27,464 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:27,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 16:18:27,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-13 16:18:27,665 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:18:27,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:27,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1190045317, now seen corresponding path program 25 times [2024-11-13 16:18:27,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:27,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273354397] [2024-11-13 16:18:27,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:27,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:33,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:18:33,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273354397] [2024-11-13 16:18:33,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273354397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:18:33,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333343876] [2024-11-13 16:18:33,749 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:18:33,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:33,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:18:33,751 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:18:33,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 16:18:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:34,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-13 16:18:34,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:18:34,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:18:34,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:34,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:34,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:34,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:35,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:35,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:36,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:36,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:37,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:37,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:38,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:38,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:39,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:40,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:41,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:41,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:42,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:43,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:18:43,915 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:18:43,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:00,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333343876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:00,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:00,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 59, 59] total 169 [2024-11-13 16:19:00,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281111027] [2024-11-13 16:19:00,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:00,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 169 states [2024-11-13 16:19:00,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:00,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2024-11-13 16:19:00,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=27786, Unknown=0, NotChecked=0, Total=28392 [2024-11-13 16:19:00,378 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 169 states, 169 states have (on average 1.2781065088757397) internal successors, (216), 169 states have internal predecessors, (216), 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 16:19:17,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:17,335 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2024-11-13 16:19:17,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-13 16:19:17,336 INFO L78 Accepts]: Start accepts. Automaton has has 169 states, 169 states have (on average 1.2781065088757397) internal successors, (216), 169 states have internal predecessors, (216), 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 83 [2024-11-13 16:19:17,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:17,337 INFO L225 Difference]: With dead ends: 147 [2024-11-13 16:19:17,337 INFO L226 Difference]: Without dead ends: 143 [2024-11-13 16:19:17,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14283 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=939, Invalid=41291, Unknown=0, NotChecked=0, Total=42230 [2024-11-13 16:19:17,339 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 7307 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 7330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 7307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:17,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 351 Invalid, 7330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 7307 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-13 16:19:17,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-13 16:19:17,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 89. [2024-11-13 16:19:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 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 16:19:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2024-11-13 16:19:17,431 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 83 [2024-11-13 16:19:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:17,431 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2024-11-13 16:19:17,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 169 states, 169 states have (on average 1.2781065088757397) internal successors, (216), 169 states have internal predecessors, (216), 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 16:19:17,431 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2024-11-13 16:19:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-13 16:19:17,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:17,432 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:17,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 16:19:17,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-13 16:19:17,632 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:17,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:17,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1191593339, now seen corresponding path program 26 times [2024-11-13 16:19:17,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:17,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916662490] [2024-11-13 16:19:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:17,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 153 proven. 514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:18,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:18,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916662490] [2024-11-13 16:19:18,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916662490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:18,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635403774] [2024-11-13 16:19:18,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:19:18,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:18,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:18,560 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:18,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 16:19:18,819 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:19:18,819 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:18,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 16:19:18,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 171 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:19,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:20,385 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 171 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:20,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635403774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:20,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:20,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 62 [2024-11-13 16:19:20,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274573086] [2024-11-13 16:19:20,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:20,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-13 16:19:20,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:20,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-13 16:19:20,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=885, Invalid=2897, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 16:19:20,387 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 62 states, 62 states have (on average 2.3548387096774195) internal successors, (146), 62 states have internal predecessors, (146), 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 16:19:21,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:21,908 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2024-11-13 16:19:21,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-13 16:19:21,909 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.3548387096774195) internal successors, (146), 62 states have internal predecessors, (146), 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 84 [2024-11-13 16:19:21,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:21,910 INFO L225 Difference]: With dead ends: 150 [2024-11-13 16:19:21,910 INFO L226 Difference]: Without dead ends: 146 [2024-11-13 16:19:21,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 109 SyntacticMatches, 38 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4159 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2068, Invalid=7832, Unknown=0, NotChecked=0, Total=9900 [2024-11-13 16:19:21,911 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 48 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:21,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 53 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 16:19:21,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-13 16:19:21,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 87. [2024-11-13 16:19:21,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 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 16:19:21,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-11-13 16:19:21,999 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 84 [2024-11-13 16:19:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:21,999 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-11-13 16:19:21,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.3548387096774195) internal successors, (146), 62 states have internal predecessors, (146), 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 16:19:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-11-13 16:19:22,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 16:19:22,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:22,000 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:22,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-13 16:19:22,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 16:19:22,201 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:22,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:22,201 INFO L85 PathProgramCache]: Analyzing trace with hash -440959511, now seen corresponding path program 27 times [2024-11-13 16:19:22,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:22,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730865424] [2024-11-13 16:19:22,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:22,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:23,115 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 480 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:23,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:23,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730865424] [2024-11-13 16:19:23,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730865424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:23,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933958562] [2024-11-13 16:19:23,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:19:23,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:23,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:23,117 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:23,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 16:19:25,379 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2024-11-13 16:19:25,379 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:25,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 16:19:25,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 532 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:26,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 532 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:27,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933958562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:27,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:27,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 62 [2024-11-13 16:19:27,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325251931] [2024-11-13 16:19:27,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:27,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-13 16:19:27,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:27,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-13 16:19:27,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=885, Invalid=2897, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 16:19:27,045 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 62 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 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 16:19:27,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:27,897 INFO L93 Difference]: Finished difference Result 153 states and 155 transitions. [2024-11-13 16:19:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 16:19:27,898 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 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 86 [2024-11-13 16:19:27,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:27,899 INFO L225 Difference]: With dead ends: 153 [2024-11-13 16:19:27,899 INFO L226 Difference]: Without dead ends: 90 [2024-11-13 16:19:27,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 114 SyntacticMatches, 37 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2946 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1488, Invalid=4832, Unknown=0, NotChecked=0, Total=6320 [2024-11-13 16:19:27,900 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 212 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:27,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 47 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:19:27,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-13 16:19:27,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2024-11-13 16:19:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 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 16:19:27,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-11-13 16:19:27,989 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 86 [2024-11-13 16:19:27,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:27,989 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-11-13 16:19:27,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.3870967741935485) internal successors, (148), 62 states have internal predecessors, (148), 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 16:19:27,989 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-11-13 16:19:27,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-13 16:19:27,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:27,990 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:28,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 16:19:28,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-13 16:19:28,190 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:28,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:28,190 INFO L85 PathProgramCache]: Analyzing trace with hash 686557343, now seen corresponding path program 28 times [2024-11-13 16:19:28,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:28,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700834118] [2024-11-13 16:19:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:28,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:19:34,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:34,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700834118] [2024-11-13 16:19:34,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700834118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:34,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261082154] [2024-11-13 16:19:34,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:19:34,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:34,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:34,192 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:34,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 16:21:34,641 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:21:34,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:21:34,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 205 conjuncts are in the unsatisfiable core [2024-11-13 16:21:34,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:21:34,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:21:34,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:35,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:35,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:35,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:36,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:36,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:37,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:37,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:38,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:39,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:39,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:40,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:41,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:42,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:43,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:44,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:45,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:46,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:47,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:21:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:21:48,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:22:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:09,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261082154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:22:09,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:22:09,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 62, 62] total 178 [2024-11-13 16:22:09,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793702388] [2024-11-13 16:22:09,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:22:09,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 178 states [2024-11-13 16:22:09,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:22:09,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2024-11-13 16:22:09,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=639, Invalid=30867, Unknown=0, NotChecked=0, Total=31506 [2024-11-13 16:22:09,996 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 178 states, 178 states have (on average 1.2696629213483146) internal successors, (226), 178 states have internal predecessors, (226), 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 16:22:31,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:22:31,455 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions. [2024-11-13 16:22:31,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-13 16:22:31,456 INFO L78 Accepts]: Start accepts. Automaton has has 178 states, 178 states have (on average 1.2696629213483146) internal successors, (226), 178 states have internal predecessors, (226), 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 87 [2024-11-13 16:22:31,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:22:31,457 INFO L225 Difference]: With dead ends: 154 [2024-11-13 16:22:31,457 INFO L226 Difference]: Without dead ends: 150 [2024-11-13 16:22:31,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15818 ImplicationChecksByTransitivity, 45.6s TimeCoverageRelationStatistics Valid=990, Invalid=45882, Unknown=0, NotChecked=0, Total=46872 [2024-11-13 16:22:31,459 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 8178 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 8201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 8178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:22:31,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 368 Invalid, 8201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 8178 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2024-11-13 16:22:31,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-13 16:22:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 93. [2024-11-13 16:22:31,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 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 16:22:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2024-11-13 16:22:31,560 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 87 [2024-11-13 16:22:31,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:22:31,560 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2024-11-13 16:22:31,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 178 states, 178 states have (on average 1.2696629213483146) internal successors, (226), 178 states have internal predecessors, (226), 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 16:22:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2024-11-13 16:22:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-13 16:22:31,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:22:31,561 INFO L215 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:22:31,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 16:22:31,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 16:22:31,762 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:22:31,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:22:31,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1279841449, now seen corresponding path program 29 times [2024-11-13 16:22:31,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:22:31,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747648160] [2024-11-13 16:22:31,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:22:31,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:22:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:22:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 171 proven. 571 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:22:32,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:22:32,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747648160] [2024-11-13 16:22:32,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747648160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:22:32,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19443373] [2024-11-13 16:22:32,856 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:22:32,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:22:32,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:22:32,858 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:22:32,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 16:24:53,154 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-13 16:24:53,154 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:24:53,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 16:24:53,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:53,876 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 190 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:53,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 190 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:54,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19443373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:54,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:24:54,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2024-11-13 16:24:54,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385243777] [2024-11-13 16:24:54,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:54,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-13 16:24:54,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:54,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-13 16:24:54,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=971, Invalid=3189, Unknown=0, NotChecked=0, Total=4160 [2024-11-13 16:24:54,637 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand has 65 states, 65 states have (on average 2.353846153846154) internal successors, (153), 65 states have internal predecessors, (153), 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 16:24:56,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:24:56,311 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2024-11-13 16:24:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-13 16:24:56,311 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.353846153846154) internal successors, (153), 65 states have internal predecessors, (153), 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 88 [2024-11-13 16:24:56,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:24:56,312 INFO L225 Difference]: With dead ends: 157 [2024-11-13 16:24:56,312 INFO L226 Difference]: Without dead ends: 153 [2024-11-13 16:24:56,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 114 SyntacticMatches, 40 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4599 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2276, Invalid=8644, Unknown=0, NotChecked=0, Total=10920 [2024-11-13 16:24:56,314 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 50 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:24:56,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 54 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 16:24:56,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-13 16:24:56,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 91. [2024-11-13 16:24:56,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:56,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2024-11-13 16:24:56,445 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88 [2024-11-13 16:24:56,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:24:56,445 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2024-11-13 16:24:56,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.353846153846154) internal successors, (153), 65 states have internal predecessors, (153), 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 16:24:56,446 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2024-11-13 16:24:56,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 16:24:56,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:24:56,446 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:56,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-13 16:24:56,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-13 16:24:56,647 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:24:56,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:56,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2134559813, now seen corresponding path program 30 times [2024-11-13 16:24:56,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:56,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131349877] [2024-11-13 16:24:56,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:56,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 535 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:57,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:57,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131349877] [2024-11-13 16:24:57,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131349877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:57,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580301729] [2024-11-13 16:24:57,728 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:24:57,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:57,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:57,730 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:57,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 16:25:04,216 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-11-13 16:25:04,216 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:25:04,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 16:25:04,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:25:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 590 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:25:05,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:25:05,871 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 590 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:25:05,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580301729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:25:05,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:25:05,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2024-11-13 16:25:05,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002618555] [2024-11-13 16:25:05,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:25:05,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-13 16:25:05,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:25:05,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-13 16:25:05,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=971, Invalid=3189, Unknown=0, NotChecked=0, Total=4160 [2024-11-13 16:25:05,873 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 65 states, 65 states have (on average 2.3846153846153846) internal successors, (155), 65 states have internal predecessors, (155), 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 16:25:06,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:25:06,643 INFO L93 Difference]: Finished difference Result 160 states and 162 transitions. [2024-11-13 16:25:06,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-13 16:25:06,643 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.3846153846153846) internal successors, (155), 65 states have internal predecessors, (155), 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 90 [2024-11-13 16:25:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:25:06,644 INFO L225 Difference]: With dead ends: 160 [2024-11-13 16:25:06,644 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 16:25:06,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 119 SyntacticMatches, 39 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3252 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1636, Invalid=5336, Unknown=0, NotChecked=0, Total=6972 [2024-11-13 16:25:06,645 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 274 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:25:06,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 38 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:25:06,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 16:25:06,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2024-11-13 16:25:06,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:25:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2024-11-13 16:25:06,764 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 90 [2024-11-13 16:25:06,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:25:06,764 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2024-11-13 16:25:06,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.3846153846153846) internal successors, (155), 65 states have internal predecessors, (155), 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 16:25:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2024-11-13 16:25:06,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-13 16:25:06,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:25:06,765 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:25:06,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-13 16:25:06,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-13 16:25:06,965 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:25:06,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:25:06,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1424028677, now seen corresponding path program 31 times [2024-11-13 16:25:06,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:25:06,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143378838] [2024-11-13 16:25:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:25:06,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:25:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:25:13,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:25:13,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143378838] [2024-11-13 16:25:13,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143378838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:25:13,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346501659] [2024-11-13 16:25:13,357 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:25:13,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:25:13,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:25:13,359 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:25:13,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e1e81c-d665-4122-9950-bf5d34130e1e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 16:25:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:25:13,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 212 conjuncts are in the unsatisfiable core [2024-11-13 16:25:13,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:25:13,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:25:13,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:14,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:14,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:14,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:15,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:15,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:15,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:16,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:16,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:17,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:17,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:18,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:19,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:20,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:21,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:21,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:22,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:23,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:24,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:26,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:25:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:25:26,315 INFO L311 TraceCheckSpWp]: Computing backward predicates...