./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/zero_sum_const3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/zero_sum_const3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB --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 4a8466707e2bff30c44c48996d40a42275ef25007ed8ba21de1de20ade9b7ba9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:16:14,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:16:14,498 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:16:14,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:16:14,504 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:16:14,535 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:16:14,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:16:14,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:16:14,537 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:16:14,537 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:16:14,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:16:14,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:16:14,538 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:16:14,538 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:16:14,538 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:16:14,539 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:16:14,539 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:16:14,539 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:16:14,539 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:16:14,539 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:16:14,539 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:16:14,539 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:16:14,539 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:16:14,540 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:16:14,540 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:16:14,540 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:16:14,540 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:16:14,540 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:16:14,541 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:16:14,541 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:16:14,541 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:16:14,541 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:16:14,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:16:14,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:16:14,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:16:14,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:16:14,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:16:14,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:16:14,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:16:14,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:16:14,543 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:16:14,543 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:16:14,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:16:14,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:16:14,544 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:16:14,544 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:16:14,544 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:16:14,544 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:16:14,544 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_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 4a8466707e2bff30c44c48996d40a42275ef25007ed8ba21de1de20ade9b7ba9 [2024-11-28 03:16:14,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:16:14,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:16:14,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:16:14,902 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:16:14,903 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:16:14,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-crafted/zero_sum_const3.c [2024-11-28 03:16:18,440 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/data/267a29b8c/1e2046db0cab4adbb6a08172397d5ca5/FLAGbee74c472 [2024-11-28 03:16:18,871 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:16:18,872 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/sv-benchmarks/c/array-crafted/zero_sum_const3.c [2024-11-28 03:16:18,884 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/data/267a29b8c/1e2046db0cab4adbb6a08172397d5ca5/FLAGbee74c472 [2024-11-28 03:16:18,915 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/data/267a29b8c/1e2046db0cab4adbb6a08172397d5ca5 [2024-11-28 03:16:18,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:16:18,919 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:16:18,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:16:18,925 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:16:18,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:16:18,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:18" (1/1) ... [2024-11-28 03:16:18,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630b251a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:18, skipping insertion in model container [2024-11-28 03:16:18,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:18" (1/1) ... [2024-11-28 03:16:18,958 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:16:19,189 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_4e28aed4-627c-43a6-a43b-ef76ada4afe3/sv-benchmarks/c/array-crafted/zero_sum_const3.c[406,419] [2024-11-28 03:16:19,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:16:19,249 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:16:19,264 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_4e28aed4-627c-43a6-a43b-ef76ada4afe3/sv-benchmarks/c/array-crafted/zero_sum_const3.c[406,419] [2024-11-28 03:16:19,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:16:19,303 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:16:19,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:19 WrapperNode [2024-11-28 03:16:19,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:16:19,307 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:16:19,308 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:16:19,308 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:16:19,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:19" (1/1) ... [2024-11-28 03:16:19,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:19" (1/1) ... [2024-11-28 03:16:19,358 INFO L138 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2024-11-28 03:16:19,359 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:16:19,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:16:19,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:16:19,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:16:19,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:19" (1/1) ... [2024-11-28 03:16:19,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:19" (1/1) ... [2024-11-28 03:16:19,374 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:19" (1/1) ... [2024-11-28 03:16:19,390 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-28 03:16:19,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:19" (1/1) ... [2024-11-28 03:16:19,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:19" (1/1) ... [2024-11-28 03:16:19,397 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:19" (1/1) ... [2024-11-28 03:16:19,398 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:19" (1/1) ... [2024-11-28 03:16:19,403 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:19" (1/1) ... [2024-11-28 03:16:19,404 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:19" (1/1) ... [2024-11-28 03:16:19,405 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:19" (1/1) ... [2024-11-28 03:16:19,407 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:16:19,408 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:16:19,408 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:16:19,408 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:16:19,409 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:19" (1/1) ... [2024-11-28 03:16:19,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:16:19,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:19,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:16:19,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:16:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:16:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:16:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:16:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:16:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:16:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:16:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:16:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:16:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:16:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:16:19,594 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:16:19,597 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:16:19,832 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-28 03:16:19,833 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:16:19,845 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:16:19,845 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-28 03:16:19,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:19 BoogieIcfgContainer [2024-11-28 03:16:19,846 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:16:19,849 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:16:19,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:16:19,856 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:16:19,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:16:18" (1/3) ... [2024-11-28 03:16:19,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dddaedd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:19, skipping insertion in model container [2024-11-28 03:16:19,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:19" (2/3) ... [2024-11-28 03:16:19,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dddaedd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:19, skipping insertion in model container [2024-11-28 03:16:19,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:19" (3/3) ... [2024-11-28 03:16:19,860 INFO L128 eAbstractionObserver]: Analyzing ICFG zero_sum_const3.c [2024-11-28 03:16:19,879 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:16:19,881 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zero_sum_const3.c that has 1 procedures, 32 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-28 03:16:19,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:16:19,962 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;@59ec1a69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:16:19,962 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:16:19,968 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 31 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:19,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 03:16:19,976 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:19,977 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:19,977 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:19,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:19,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1363657814, now seen corresponding path program 1 times [2024-11-28 03:16:19,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:19,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153809728] [2024-11-28 03:16:19,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:19,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:20,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:20,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:20,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153809728] [2024-11-28 03:16:20,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153809728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:20,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:20,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:16:20,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82026829] [2024-11-28 03:16:20,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:20,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:16:20,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:20,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:16:20,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:16:20,274 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 31 states have internal predecessors, (47), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:20,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:20,291 INFO L93 Difference]: Finished difference Result 59 states and 86 transitions. [2024-11-28 03:16:20,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:16:20,294 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 [2024-11-28 03:16:20,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:20,302 INFO L225 Difference]: With dead ends: 59 [2024-11-28 03:16:20,302 INFO L226 Difference]: Without dead ends: 27 [2024-11-28 03:16:20,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:16:20,309 INFO L435 NwaCegarLoop]: 39 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, 39 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 [2024-11-28 03:16:20,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:16:20,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-28 03:16:20,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-28 03:16:20,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:20,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-28 03:16:20,348 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 19 [2024-11-28 03:16:20,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:20,349 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-28 03:16:20,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-28 03:16:20,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 03:16:20,351 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:20,351 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:20,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:16:20,351 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:20,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:20,353 INFO L85 PathProgramCache]: Analyzing trace with hash 678478894, now seen corresponding path program 1 times [2024-11-28 03:16:20,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:20,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901327379] [2024-11-28 03:16:20,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:20,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:20,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:20,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901327379] [2024-11-28 03:16:20,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901327379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:20,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:20,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:16:20,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111302562] [2024-11-28 03:16:20,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:20,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:16:20,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:20,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:16:20,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:20,601 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:20,733 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2024-11-28 03:16:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:16:20,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 [2024-11-28 03:16:20,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:20,736 INFO L225 Difference]: With dead ends: 51 [2024-11-28 03:16:20,736 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 03:16:20,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:20,738 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:20,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:16:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 03:16:20,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-28 03:16:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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) [2024-11-28 03:16:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-28 03:16:20,750 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 19 [2024-11-28 03:16:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:20,750 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-28 03:16:20,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:20,750 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-28 03:16:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 03:16:20,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:20,754 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:20,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:16:20,754 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:20,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:20,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1431315182, now seen corresponding path program 1 times [2024-11-28 03:16:20,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:20,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344929451] [2024-11-28 03:16:20,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:20,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:16:20,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:20,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344929451] [2024-11-28 03:16:20,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344929451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:20,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:20,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:16:20,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985569941] [2024-11-28 03:16:20,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:20,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:16:20,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:20,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:16:20,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:16:20,905 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2024-11-28 03:16:21,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:21,062 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2024-11-28 03:16:21,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:16:21,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) Word has length 21 [2024-11-28 03:16:21,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:21,063 INFO L225 Difference]: With dead ends: 60 [2024-11-28 03:16:21,063 INFO L226 Difference]: Without dead ends: 41 [2024-11-28 03:16:21,064 INFO L434 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 [2024-11-28 03:16:21,065 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 45 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:21,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 15 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:16:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-28 03:16:21,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2024-11-28 03:16:21,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:21,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-11-28 03:16:21,074 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 21 [2024-11-28 03:16:21,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:21,074 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-11-28 03:16:21,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2024-11-28 03:16:21,075 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-11-28 03:16:21,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 03:16:21,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:21,076 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:21,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:16:21,076 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:21,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:21,077 INFO L85 PathProgramCache]: Analyzing trace with hash 620025770, now seen corresponding path program 1 times [2024-11-28 03:16:21,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:21,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227998790] [2024-11-28 03:16:21,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:21,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:16:21,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:21,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227998790] [2024-11-28 03:16:21,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227998790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:21,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726464532] [2024-11-28 03:16:21,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:21,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:21,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:21,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:21,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:16:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:21,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:16:21,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:21,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:16:21,511 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:16:21,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726464532] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:21,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:21,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 03:16:21,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749534098] [2024-11-28 03:16:21,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:21,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:16:21,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:21,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:16:21,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:16:21,570 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:21,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:21,727 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2024-11-28 03:16:21,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:16:21,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-28 03:16:21,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:21,729 INFO L225 Difference]: With dead ends: 65 [2024-11-28 03:16:21,729 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 03:16:21,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:16:21,731 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:21,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:16:21,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 03:16:21,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2024-11-28 03:16:21,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:21,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-28 03:16:21,744 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 33 [2024-11-28 03:16:21,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:21,745 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-28 03:16:21,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:21,747 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-28 03:16:21,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 03:16:21,748 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:21,748 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:21,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:16:21,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:21,949 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:21,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:21,950 INFO L85 PathProgramCache]: Analyzing trace with hash -430665330, now seen corresponding path program 2 times [2024-11-28 03:16:21,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:21,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129221522] [2024-11-28 03:16:21,950 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:16:21,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:22,007 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:16:22,008 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:16:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 03:16:22,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:22,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129221522] [2024-11-28 03:16:22,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129221522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:22,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251315096] [2024-11-28 03:16:22,154 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:16:22,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:22,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:22,156 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:22,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:16:22,262 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:16:22,262 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:16:22,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:16:22,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 03:16:22,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 03:16:22,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251315096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:22,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:22,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-28 03:16:22,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134142863] [2024-11-28 03:16:22,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:22,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:16:22,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:22,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:16:22,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:16:22,438 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:22,655 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2024-11-28 03:16:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:16:22,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-28 03:16:22,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:22,656 INFO L225 Difference]: With dead ends: 79 [2024-11-28 03:16:22,656 INFO L226 Difference]: Without dead ends: 55 [2024-11-28 03:16:22,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:16:22,658 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 59 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:22,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 18 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:16:22,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-28 03:16:22,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2024-11-28 03:16:22,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2024-11-28 03:16:22,677 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 35 [2024-11-28 03:16:22,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:22,678 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2024-11-28 03:16:22,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:22,678 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2024-11-28 03:16:22,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 03:16:22,681 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:22,682 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:22,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:16:22,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:22,882 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:22,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:22,883 INFO L85 PathProgramCache]: Analyzing trace with hash 658285094, now seen corresponding path program 3 times [2024-11-28 03:16:22,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:22,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266215850] [2024-11-28 03:16:22,883 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:16:22,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:23,082 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:16:23,082 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:16:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:28,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:28,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266215850] [2024-11-28 03:16:28,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266215850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331126755] [2024-11-28 03:16:28,458 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:16:28,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:28,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:28,460 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:28,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:16:28,566 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:16:28,566 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:16:28,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 03:16:28,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:16:29,278 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:29,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:16:29,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2024-11-28 03:16:29,954 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:16:29,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331126755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:29,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:29,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 10, 10] total 40 [2024-11-28 03:16:29,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140815317] [2024-11-28 03:16:29,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:29,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 03:16:29,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:29,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 03:16:29,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 03:16:29,961 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 40 states, 40 states have (on average 3.2) internal successors, (128), 40 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:31,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:31,986 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2024-11-28 03:16:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:16:31,987 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.2) internal successors, (128), 40 states have internal predecessors, (128), 0 states have call successors, (0), 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 47 [2024-11-28 03:16:31,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:31,988 INFO L225 Difference]: With dead ends: 90 [2024-11-28 03:16:31,988 INFO L226 Difference]: Without dead ends: 86 [2024-11-28 03:16:31,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=286, Invalid=1970, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 03:16:31,993 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 72 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:31,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 117 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:16:31,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-28 03:16:32,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2024-11-28 03:16:32,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 76 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) [2024-11-28 03:16:32,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2024-11-28 03:16:32,011 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 47 [2024-11-28 03:16:32,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:32,011 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2024-11-28 03:16:32,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.2) internal successors, (128), 40 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:32,012 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2024-11-28 03:16:32,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 03:16:32,013 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:32,014 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:32,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:16:32,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 03:16:32,218 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:32,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:32,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1581991498, now seen corresponding path program 4 times [2024-11-28 03:16:32,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:32,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108843270] [2024-11-28 03:16:32,219 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:16:32,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:32,242 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:16:32,243 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:16:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 03:16:32,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:32,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108843270] [2024-11-28 03:16:32,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108843270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:32,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843865336] [2024-11-28 03:16:32,388 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:16:32,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:32,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:32,391 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:32,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:16:32,468 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:16:32,468 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:16:32,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:16:32,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 03:16:32,560 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:32,640 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 03:16:32,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843865336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:32,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:32,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 03:16:32,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579450465] [2024-11-28 03:16:32,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:32,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:16:32,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:32,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:16:32,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:16:32,643 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 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) [2024-11-28 03:16:33,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:33,232 INFO L93 Difference]: Finished difference Result 161 states and 187 transitions. [2024-11-28 03:16:33,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:16:33,233 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 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) Word has length 49 [2024-11-28 03:16:33,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:33,234 INFO L225 Difference]: With dead ends: 161 [2024-11-28 03:16:33,234 INFO L226 Difference]: Without dead ends: 104 [2024-11-28 03:16:33,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 91 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:16:33,236 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 68 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:33,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 40 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:16:33,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-28 03:16:33,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 87. [2024-11-28 03:16:33,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 86 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) [2024-11-28 03:16:33,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2024-11-28 03:16:33,257 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 49 [2024-11-28 03:16:33,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:33,257 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2024-11-28 03:16:33,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 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) [2024-11-28 03:16:33,258 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2024-11-28 03:16:33,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 03:16:33,259 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:33,259 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:33,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:16:33,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 03:16:33,463 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:33,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:33,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1190560906, now seen corresponding path program 5 times [2024-11-28 03:16:33,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:33,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205251649] [2024-11-28 03:16:33,464 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:16:33,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:33,492 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 03:16:33,492 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:16:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 03:16:33,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:33,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205251649] [2024-11-28 03:16:33,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205251649] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:33,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490668331] [2024-11-28 03:16:33,630 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:16:33,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:33,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:33,633 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:33,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:16:33,742 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 03:16:33,742 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:16:33,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:16:33,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:33,841 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 03:16:33,841 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 03:16:33,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490668331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:33,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:33,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 03:16:33,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676719536] [2024-11-28 03:16:33,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:33,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:16:33,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:33,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:16:33,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:16:33,916 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 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) [2024-11-28 03:16:34,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:34,262 INFO L93 Difference]: Finished difference Result 151 states and 168 transitions. [2024-11-28 03:16:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:16:34,262 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 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) Word has length 49 [2024-11-28 03:16:34,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:34,263 INFO L225 Difference]: With dead ends: 151 [2024-11-28 03:16:34,263 INFO L226 Difference]: Without dead ends: 69 [2024-11-28 03:16:34,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:16:34,265 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 75 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:34,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 35 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:16:34,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-28 03:16:34,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2024-11-28 03:16:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2024-11-28 03:16:34,277 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 49 [2024-11-28 03:16:34,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:34,277 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2024-11-28 03:16:34,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 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) [2024-11-28 03:16:34,277 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2024-11-28 03:16:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 03:16:34,278 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:34,278 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:34,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:16:34,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:34,482 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:34,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:34,483 INFO L85 PathProgramCache]: Analyzing trace with hash 632021922, now seen corresponding path program 6 times [2024-11-28 03:16:34,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:34,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364935065] [2024-11-28 03:16:34,483 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:16:34,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:34,604 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-28 03:16:34,604 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:16:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:40,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:40,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364935065] [2024-11-28 03:16:40,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364935065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:40,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162686645] [2024-11-28 03:16:40,593 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:16:40,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:40,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:40,596 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:40,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:16:40,706 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-28 03:16:40,706 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:16:40,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-28 03:16:40,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:40,821 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 [2024-11-28 03:16:40,901 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 19 treesize of output 18 [2024-11-28 03:16:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:42,206 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 03:16:42,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162686645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:42,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:42,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 15, 11] total 51 [2024-11-28 03:16:42,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107692219] [2024-11-28 03:16:42,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:42,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-28 03:16:42,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:42,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-28 03:16:42,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2350, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 03:16:42,981 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 51 states, 51 states have (on average 3.2941176470588234) internal successors, (168), 51 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:50,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:50,342 INFO L93 Difference]: Finished difference Result 244 states and 277 transitions. [2024-11-28 03:16:50,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 03:16:50,343 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.2941176470588234) internal successors, (168), 51 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-28 03:16:50,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:50,344 INFO L225 Difference]: With dead ends: 244 [2024-11-28 03:16:50,344 INFO L226 Difference]: Without dead ends: 238 [2024-11-28 03:16:50,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2016 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1042, Invalid=7148, Unknown=0, NotChecked=0, Total=8190 [2024-11-28 03:16:50,350 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 772 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 3200 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 3200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:50,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 212 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 3200 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 03:16:50,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-28 03:16:50,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 117. [2024-11-28 03:16:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.1293103448275863) internal successors, (131), 116 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:50,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2024-11-28 03:16:50,389 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 61 [2024-11-28 03:16:50,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:50,389 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2024-11-28 03:16:50,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.2941176470588234) internal successors, (168), 51 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:50,390 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2024-11-28 03:16:50,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 03:16:50,392 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:50,392 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:50,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:16:50,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:50,596 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:50,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:50,597 INFO L85 PathProgramCache]: Analyzing trace with hash -509529594, now seen corresponding path program 7 times [2024-11-28 03:16:50,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:50,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459017435] [2024-11-28 03:16:50,597 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:16:50,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 03:16:50,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:50,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459017435] [2024-11-28 03:16:50,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459017435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:50,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563170414] [2024-11-28 03:16:50,870 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:16:50,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:50,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:50,873 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:50,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:16:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:50,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:16:50,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 03:16:51,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 03:16:51,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563170414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:51,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:51,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-28 03:16:51,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341822130] [2024-11-28 03:16:51,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:51,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:16:51,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:51,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:16:51,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:16:51,225 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:51,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:51,633 INFO L93 Difference]: Finished difference Result 222 states and 250 transitions. [2024-11-28 03:16:51,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:16:51,633 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 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 63 [2024-11-28 03:16:51,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:51,635 INFO L225 Difference]: With dead ends: 222 [2024-11-28 03:16:51,635 INFO L226 Difference]: Without dead ends: 83 [2024-11-28 03:16:51,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 113 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:16:51,636 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 158 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:51,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 33 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:16:51,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-28 03:16:51,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 76. [2024-11-28 03:16:51,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 75 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:51,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2024-11-28 03:16:51,656 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 63 [2024-11-28 03:16:51,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:51,656 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2024-11-28 03:16:51,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:51,657 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2024-11-28 03:16:51,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 03:16:51,658 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:51,658 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:51,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:16:51,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:51,859 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:51,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:51,860 INFO L85 PathProgramCache]: Analyzing trace with hash -652846050, now seen corresponding path program 8 times [2024-11-28 03:16:51,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:51,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606853804] [2024-11-28 03:16:51,860 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:16:51,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:51,911 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:16:51,911 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:16:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:58,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:58,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606853804] [2024-11-28 03:16:58,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606853804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:58,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304500108] [2024-11-28 03:16:58,005 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:16:58,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:58,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:58,007 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:58,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:16:58,103 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:16:58,103 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:16:58,106 WARN L254 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-28 03:16:58,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:58,186 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 [2024-11-28 03:16:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:58,967 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 03:16:59,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304500108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:59,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:59,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 18, 13] total 52 [2024-11-28 03:16:59,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714978671] [2024-11-28 03:16:59,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:59,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-28 03:16:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:59,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-28 03:16:59,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2421, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 03:16:59,933 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 52 states, 52 states have (on average 3.5) internal successors, (182), 52 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:03,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:03,013 INFO L93 Difference]: Finished difference Result 216 states and 240 transitions. [2024-11-28 03:17:03,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 03:17:03,014 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.5) internal successors, (182), 52 states have internal predecessors, (182), 0 states have call successors, (0), 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 75 [2024-11-28 03:17:03,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:03,016 INFO L225 Difference]: With dead ends: 216 [2024-11-28 03:17:03,016 INFO L226 Difference]: Without dead ends: 160 [2024-11-28 03:17:03,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1356 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=471, Invalid=4499, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 03:17:03,018 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 136 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 2430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:03,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 131 Invalid, 2430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 03:17:03,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-28 03:17:03,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 141. [2024-11-28 03:17:03,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.1142857142857143) internal successors, (156), 140 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 156 transitions. [2024-11-28 03:17:03,076 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 156 transitions. Word has length 75 [2024-11-28 03:17:03,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:03,077 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 156 transitions. [2024-11-28 03:17:03,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.5) internal successors, (182), 52 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 156 transitions. [2024-11-28 03:17:03,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 03:17:03,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:03,078 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:03,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:17:03,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:03,279 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:03,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash -874734718, now seen corresponding path program 9 times [2024-11-28 03:17:03,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:03,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5272383] [2024-11-28 03:17:03,281 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:17:03,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:03,362 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 03:17:03,362 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:17:03,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:03,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5272383] [2024-11-28 03:17:03,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5272383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:03,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012431024] [2024-11-28 03:17:03,618 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:17:03,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:03,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:03,623 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:03,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:17:03,753 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 03:17:03,753 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:03,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:17:03,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:17:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:17:03,966 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:17:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:17:04,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012431024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:17:04,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:17:04,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-28 03:17:04,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221674131] [2024-11-28 03:17:04,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:17:04,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:17:04,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:17:04,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:17:04,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:17:04,167 INFO L87 Difference]: Start difference. First operand 141 states and 156 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:05,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:05,129 INFO L93 Difference]: Finished difference Result 295 states and 328 transitions. [2024-11-28 03:17:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:17:05,132 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 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 77 [2024-11-28 03:17:05,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:05,133 INFO L225 Difference]: With dead ends: 295 [2024-11-28 03:17:05,133 INFO L226 Difference]: Without dead ends: 198 [2024-11-28 03:17:05,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 147 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2024-11-28 03:17:05,135 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 100 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:05,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 38 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:17:05,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-28 03:17:05,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 140. [2024-11-28 03:17:05,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.0935251798561152) internal successors, (152), 139 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) [2024-11-28 03:17:05,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2024-11-28 03:17:05,186 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 77 [2024-11-28 03:17:05,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:05,186 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2024-11-28 03:17:05,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:05,187 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2024-11-28 03:17:05,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 03:17:05,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:05,188 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:05,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:17:05,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:05,389 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:05,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash -381050750, now seen corresponding path program 10 times [2024-11-28 03:17:05,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:05,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082128216] [2024-11-28 03:17:05,390 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:17:05,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:05,406 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:17:05,406 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:17:05,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:05,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082128216] [2024-11-28 03:17:05,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082128216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:05,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971461371] [2024-11-28 03:17:05,601 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:17:05,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:05,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:05,603 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:05,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:17:05,697 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:17:05,697 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:05,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:17:05,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:17:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:17:05,920 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:17:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:17:06,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971461371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:17:06,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:17:06,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2024-11-28 03:17:06,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235359162] [2024-11-28 03:17:06,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:17:06,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:17:06,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:17:06,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:17:06,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:17:06,109 INFO L87 Difference]: Start difference. First operand 140 states and 152 transitions. Second operand has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:06,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:06,667 INFO L93 Difference]: Finished difference Result 225 states and 242 transitions. [2024-11-28 03:17:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:17:06,668 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 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 77 [2024-11-28 03:17:06,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:06,669 INFO L225 Difference]: With dead ends: 225 [2024-11-28 03:17:06,669 INFO L226 Difference]: Without dead ends: 97 [2024-11-28 03:17:06,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 139 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:17:06,671 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 110 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:06,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 40 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:17:06,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-28 03:17:06,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 90. [2024-11-28 03:17:06,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0786516853932584) internal successors, (96), 89 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2024-11-28 03:17:06,706 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 77 [2024-11-28 03:17:06,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:06,707 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2024-11-28 03:17:06,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:06,707 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2024-11-28 03:17:06,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 03:17:06,708 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:06,708 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:06,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:17:06,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:06,909 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:06,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:06,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1195390054, now seen corresponding path program 11 times [2024-11-28 03:17:06,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:06,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657471651] [2024-11-28 03:17:06,910 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:17:06,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:07,088 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 03:17:07,088 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 1 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:17:13,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:13,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657471651] [2024-11-28 03:17:13,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657471651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:13,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253198749] [2024-11-28 03:17:13,698 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:17:13,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:13,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:13,700 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:13,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:17:13,922 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 03:17:13,922 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:13,926 WARN L254 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 139 conjuncts are in the unsatisfiable core [2024-11-28 03:17:13,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:17:14,181 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 [2024-11-28 03:17:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:17:15,644 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:17:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:17:16,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253198749] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:17:16,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:17:16,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 21, 15] total 68 [2024-11-28 03:17:16,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132030218] [2024-11-28 03:17:16,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:17:16,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-28 03:17:16,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:17:16,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-28 03:17:16,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=4306, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 03:17:16,761 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 68 states, 68 states have (on average 3.6029411764705883) internal successors, (245), 68 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:19,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:19,197 INFO L93 Difference]: Finished difference Result 163 states and 174 transitions. [2024-11-28 03:17:19,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:17:19,198 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.6029411764705883) internal successors, (245), 68 states have internal predecessors, (245), 0 states have call successors, (0), 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 89 [2024-11-28 03:17:19,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:19,199 INFO L225 Difference]: With dead ends: 163 [2024-11-28 03:17:19,199 INFO L226 Difference]: Without dead ends: 159 [2024-11-28 03:17:19,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=350, Invalid=6130, Unknown=0, NotChecked=0, Total=6480 [2024-11-28 03:17:19,202 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 55 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:19,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 233 Invalid, 2995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 03:17:19,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-28 03:17:19,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 143. [2024-11-28 03:17:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0845070422535212) internal successors, (154), 142 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:19,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 154 transitions. [2024-11-28 03:17:19,237 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 154 transitions. Word has length 89 [2024-11-28 03:17:19,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:19,237 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 154 transitions. [2024-11-28 03:17:19,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.6029411764705883) internal successors, (245), 68 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:19,238 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 154 transitions. [2024-11-28 03:17:19,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 03:17:19,239 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:19,239 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:19,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 03:17:19,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:17:19,439 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:19,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1768361282, now seen corresponding path program 12 times [2024-11-28 03:17:19,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:19,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016343294] [2024-11-28 03:17:19,440 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:17:19,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:19,499 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 03:17:19,499 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 03:17:19,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:19,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016343294] [2024-11-28 03:17:19,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016343294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:19,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111115625] [2024-11-28 03:17:19,780 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:17:19,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:19,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:19,783 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:19,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:17:19,924 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 03:17:19,924 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:19,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:17:19,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:17:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 03:17:20,127 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:17:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 03:17:20,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111115625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:17:20,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:17:20,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-28 03:17:20,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925066909] [2024-11-28 03:17:20,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:17:20,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:17:20,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:17:20,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:17:20,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:17:20,311 INFO L87 Difference]: Start difference. First operand 143 states and 154 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 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) [2024-11-28 03:17:21,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:21,577 INFO L93 Difference]: Finished difference Result 287 states and 313 transitions. [2024-11-28 03:17:21,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:17:21,577 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 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 91 [2024-11-28 03:17:21,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:21,579 INFO L225 Difference]: With dead ends: 287 [2024-11-28 03:17:21,581 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 03:17:21,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 168 SyntacticMatches, 12 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:17:21,582 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 132 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:21,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 51 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:17:21,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 03:17:21,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 153. [2024-11-28 03:17:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.0789473684210527) internal successors, (164), 152 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 164 transitions. [2024-11-28 03:17:21,633 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 164 transitions. Word has length 91 [2024-11-28 03:17:21,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:21,633 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 164 transitions. [2024-11-28 03:17:21,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 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) [2024-11-28 03:17:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 164 transitions. [2024-11-28 03:17:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 03:17:21,635 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:21,635 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:21,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 03:17:21,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:21,840 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:21,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:21,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2074795778, now seen corresponding path program 13 times [2024-11-28 03:17:21,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:21,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190586336] [2024-11-28 03:17:21,841 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:17:21,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:17:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 03:17:22,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:22,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190586336] [2024-11-28 03:17:22,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190586336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:22,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864720733] [2024-11-28 03:17:22,125 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:17:22,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:22,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:22,128 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:22,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:17:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:17:22,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:17:22,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:17:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 03:17:22,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:17:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-28 03:17:22,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864720733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:17:22,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:17:22,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-28 03:17:22,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259737610] [2024-11-28 03:17:22,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:17:22,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:17:22,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:17:22,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:17:22,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:17:22,808 INFO L87 Difference]: Start difference. First operand 153 states and 164 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 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) [2024-11-28 03:17:23,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:23,259 INFO L93 Difference]: Finished difference Result 259 states and 276 transitions. [2024-11-28 03:17:23,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:17:23,260 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 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 91 [2024-11-28 03:17:23,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:23,261 INFO L225 Difference]: With dead ends: 259 [2024-11-28 03:17:23,261 INFO L226 Difference]: Without dead ends: 111 [2024-11-28 03:17:23,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 163 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:17:23,262 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 179 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:23,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 42 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:17:23,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-28 03:17:23,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 104. [2024-11-28 03:17:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0679611650485437) internal successors, (110), 103 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:23,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2024-11-28 03:17:23,286 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 91 [2024-11-28 03:17:23,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:23,286 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2024-11-28 03:17:23,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 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) [2024-11-28 03:17:23,287 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2024-11-28 03:17:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 03:17:23,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:23,287 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:23,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 03:17:23,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:23,488 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:23,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:23,488 INFO L85 PathProgramCache]: Analyzing trace with hash -161746410, now seen corresponding path program 14 times [2024-11-28 03:17:23,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:23,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856866903] [2024-11-28 03:17:23,488 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:17:23,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:23,533 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:17:23,533 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:17:31,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:31,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856866903] [2024-11-28 03:17:31,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856866903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:31,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469491620] [2024-11-28 03:17:31,993 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:17:31,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:31,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:31,995 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:31,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:17:32,112 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:17:32,112 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:32,118 WARN L254 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 165 conjuncts are in the unsatisfiable core [2024-11-28 03:17:32,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:17:32,207 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 [2024-11-28 03:17:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:17:33,109 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:17:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:17:34,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469491620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:17:34,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:17:34,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 24, 17] total 70 [2024-11-28 03:17:34,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458404697] [2024-11-28 03:17:34,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:17:34,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-28 03:17:34,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:17:34,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-28 03:17:34,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=4503, Unknown=0, NotChecked=0, Total=4830 [2024-11-28 03:17:34,458 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand has 70 states, 70 states have (on average 3.5714285714285716) internal successors, (250), 70 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:40,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:40,089 INFO L93 Difference]: Finished difference Result 300 states and 330 transitions. [2024-11-28 03:17:40,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-28 03:17:40,089 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 3.5714285714285716) internal successors, (250), 70 states have internal predecessors, (250), 0 states have call successors, (0), 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 103 [2024-11-28 03:17:40,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:40,092 INFO L225 Difference]: With dead ends: 300 [2024-11-28 03:17:40,092 INFO L226 Difference]: Without dead ends: 224 [2024-11-28 03:17:40,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2593 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=800, Invalid=9300, Unknown=0, NotChecked=0, Total=10100 [2024-11-28 03:17:40,095 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 291 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 3786 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 4119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 3786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:40,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 151 Invalid, 4119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 3786 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 03:17:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-28 03:17:40,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 203. [2024-11-28 03:17:40,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.108910891089109) internal successors, (224), 202 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:40,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 224 transitions. [2024-11-28 03:17:40,142 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 224 transitions. Word has length 103 [2024-11-28 03:17:40,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:40,142 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 224 transitions. [2024-11-28 03:17:40,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 3.5714285714285716) internal successors, (250), 70 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:40,142 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 224 transitions. [2024-11-28 03:17:40,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 03:17:40,143 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:40,144 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:40,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 03:17:40,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:17:40,344 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:40,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:40,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1138306182, now seen corresponding path program 15 times [2024-11-28 03:17:40,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:40,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827387976] [2024-11-28 03:17:40,345 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:17:40,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:40,441 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-28 03:17:40,441 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-28 03:17:40,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:40,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827387976] [2024-11-28 03:17:40,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827387976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:40,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562203325] [2024-11-28 03:17:40,740 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:17:40,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:40,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:40,742 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:40,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:17:40,904 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-28 03:17:40,904 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:40,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:17:40,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:17:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-28 03:17:41,140 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:17:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-28 03:17:41,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562203325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:17:41,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:17:41,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-28 03:17:41,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632774796] [2024-11-28 03:17:41,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:17:41,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:17:41,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:17:41,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:17:41,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:17:41,376 INFO L87 Difference]: Start difference. First operand 203 states and 224 transitions. Second operand has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 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) [2024-11-28 03:17:42,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:42,325 INFO L93 Difference]: Finished difference Result 411 states and 454 transitions. [2024-11-28 03:17:42,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 03:17:42,325 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-28 03:17:42,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:42,327 INFO L225 Difference]: With dead ends: 411 [2024-11-28 03:17:42,327 INFO L226 Difference]: Without dead ends: 274 [2024-11-28 03:17:42,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 201 SyntacticMatches, 14 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=1280, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:17:42,328 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 181 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:42,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 39 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:17:42,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-28 03:17:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 188. [2024-11-28 03:17:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.0695187165775402) internal successors, (200), 187 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 200 transitions. [2024-11-28 03:17:42,382 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 200 transitions. Word has length 105 [2024-11-28 03:17:42,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:42,382 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 200 transitions. [2024-11-28 03:17:42,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 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) [2024-11-28 03:17:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 200 transitions. [2024-11-28 03:17:42,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 03:17:42,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:42,384 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:42,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 03:17:42,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:17:42,588 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:42,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:42,589 INFO L85 PathProgramCache]: Analyzing trace with hash -880699270, now seen corresponding path program 16 times [2024-11-28 03:17:42,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:42,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435997324] [2024-11-28 03:17:42,589 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:17:42,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:42,614 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:17:42,614 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-28 03:17:42,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:42,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435997324] [2024-11-28 03:17:42,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435997324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:42,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636155812] [2024-11-28 03:17:42,883 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:17:42,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:42,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:42,886 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:42,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:17:42,988 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:17:42,988 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:42,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:17:42,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:17:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-28 03:17:43,233 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:17:43,426 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-28 03:17:43,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636155812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:17:43,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:17:43,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 24 [2024-11-28 03:17:43,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478881905] [2024-11-28 03:17:43,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:17:43,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:17:43,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:17:43,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:17:43,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:17:43,428 INFO L87 Difference]: Start difference. First operand 188 states and 200 transitions. Second operand has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 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) [2024-11-28 03:17:44,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:44,028 INFO L93 Difference]: Finished difference Result 297 states and 314 transitions. [2024-11-28 03:17:44,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:17:44,029 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 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 105 [2024-11-28 03:17:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:44,031 INFO L225 Difference]: With dead ends: 297 [2024-11-28 03:17:44,031 INFO L226 Difference]: Without dead ends: 125 [2024-11-28 03:17:44,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 189 SyntacticMatches, 14 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=248, Invalid=682, Unknown=0, NotChecked=0, Total=930 [2024-11-28 03:17:44,032 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 181 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:44,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 46 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:17:44,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-28 03:17:44,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 118. [2024-11-28 03:17:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0598290598290598) internal successors, (124), 117 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 124 transitions. [2024-11-28 03:17:44,061 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 124 transitions. Word has length 105 [2024-11-28 03:17:44,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:44,061 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 124 transitions. [2024-11-28 03:17:44,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 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) [2024-11-28 03:17:44,061 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 124 transitions. [2024-11-28 03:17:44,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 03:17:44,062 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:44,062 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:44,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 03:17:44,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:44,265 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:44,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:44,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2047774610, now seen corresponding path program 17 times [2024-11-28 03:17:44,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:44,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387169502] [2024-11-28 03:17:44,266 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:17:44,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:44,406 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-28 03:17:44,406 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:17:57,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:57,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387169502] [2024-11-28 03:17:57,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387169502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:57,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649978090] [2024-11-28 03:17:57,060 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:17:57,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:57,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:57,062 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:57,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:17:57,638 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-28 03:17:57,638 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:57,644 WARN L254 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 201 conjuncts are in the unsatisfiable core [2024-11-28 03:17:57,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:17:57,812 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 [2024-11-28 03:17:57,892 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 19 treesize of output 18 [2024-11-28 03:17:57,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:17:57,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-28 03:17:58,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:17:58,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-28 03:17:58,219 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:17:58,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-28 03:17:58,355 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:17:58,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-28 03:18:02,082 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:02,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 03:18:04,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649978090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:04,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:04,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 27, 19] total 85 [2024-11-28 03:18:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888758768] [2024-11-28 03:18:04,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:04,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-28 03:18:04,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:04,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-28 03:18:04,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=6849, Unknown=0, NotChecked=0, Total=7140 [2024-11-28 03:18:04,206 INFO L87 Difference]: Start difference. First operand 118 states and 124 transitions. Second operand has 85 states, 85 states have (on average 3.847058823529412) internal successors, (327), 85 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:09,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:09,044 INFO L93 Difference]: Finished difference Result 211 states and 222 transitions. [2024-11-28 03:18:09,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 03:18:09,045 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 3.847058823529412) internal successors, (327), 85 states have internal predecessors, (327), 0 states have call successors, (0), 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 117 [2024-11-28 03:18:09,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:09,046 INFO L225 Difference]: With dead ends: 211 [2024-11-28 03:18:09,046 INFO L226 Difference]: Without dead ends: 207 [2024-11-28 03:18:09,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2343 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=444, Invalid=10898, Unknown=0, NotChecked=0, Total=11342 [2024-11-28 03:18:09,048 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 4345 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 4375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 4345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:09,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 259 Invalid, 4375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 4345 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 03:18:09,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-28 03:18:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 187. [2024-11-28 03:18:09,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.064516129032258) internal successors, (198), 186 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:09,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 198 transitions. [2024-11-28 03:18:09,101 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 198 transitions. Word has length 117 [2024-11-28 03:18:09,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:09,102 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 198 transitions. [2024-11-28 03:18:09,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 3.847058823529412) internal successors, (327), 85 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:09,102 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 198 transitions. [2024-11-28 03:18:09,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-28 03:18:09,103 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:09,103 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:09,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 03:18:09,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:09,304 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:18:09,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:09,305 INFO L85 PathProgramCache]: Analyzing trace with hash -697698122, now seen corresponding path program 18 times [2024-11-28 03:18:09,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:09,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483809099] [2024-11-28 03:18:09,305 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:18:09,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:09,393 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 03:18:09,393 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:18:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 51 proven. 62 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-28 03:18:09,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483809099] [2024-11-28 03:18:09,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483809099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123095584] [2024-11-28 03:18:09,662 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:18:09,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:09,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:09,664 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:09,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:18:09,935 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 03:18:09,935 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:18:09,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:18:09,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-28 03:18:10,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-28 03:18:10,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123095584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:10,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:10,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-28 03:18:10,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523644046] [2024-11-28 03:18:10,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:10,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 03:18:10,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:10,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 03:18:10,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:18:10,323 INFO L87 Difference]: Start difference. First operand 187 states and 198 transitions. Second operand has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 29 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) [2024-11-28 03:18:11,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:11,055 INFO L93 Difference]: Finished difference Result 389 states and 415 transitions. [2024-11-28 03:18:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:18:11,055 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2024-11-28 03:18:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:11,056 INFO L225 Difference]: With dead ends: 389 [2024-11-28 03:18:11,056 INFO L226 Difference]: Without dead ends: 207 [2024-11-28 03:18:11,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 213 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:18:11,057 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 347 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:11,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 44 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:18:11,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-28 03:18:11,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 194. [2024-11-28 03:18:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.0569948186528497) internal successors, (204), 193 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:11,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 204 transitions. [2024-11-28 03:18:11,122 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 204 transitions. Word has length 119 [2024-11-28 03:18:11,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:11,122 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 204 transitions. [2024-11-28 03:18:11,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 29 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) [2024-11-28 03:18:11,123 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 204 transitions. [2024-11-28 03:18:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-28 03:18:11,124 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:11,124 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:11,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 03:18:11,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 03:18:11,324 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:18:11,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:11,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1246515098, now seen corresponding path program 19 times [2024-11-28 03:18:11,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:11,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404067472] [2024-11-28 03:18:11,325 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:18:11,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-28 03:18:11,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:11,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404067472] [2024-11-28 03:18:11,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404067472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:11,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730276591] [2024-11-28 03:18:11,601 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:18:11,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:11,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:11,603 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:11,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:18:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:11,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:18:11,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-28 03:18:11,967 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-28 03:18:12,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730276591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:12,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:12,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-28 03:18:12,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917389888] [2024-11-28 03:18:12,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:12,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 03:18:12,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:12,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 03:18:12,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:18:12,202 INFO L87 Difference]: Start difference. First operand 194 states and 204 transitions. Second operand has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 29 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) [2024-11-28 03:18:12,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:12,950 INFO L93 Difference]: Finished difference Result 206 states and 216 transitions. [2024-11-28 03:18:12,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 03:18:12,951 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-11-28 03:18:12,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:12,952 INFO L225 Difference]: With dead ends: 206 [2024-11-28 03:18:12,952 INFO L226 Difference]: Without dead ends: 138 [2024-11-28 03:18:12,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 216 SyntacticMatches, 16 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=441, Invalid=1539, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 03:18:12,954 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 242 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:12,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 50 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:18:12,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-28 03:18:12,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 132. [2024-11-28 03:18:12,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.0534351145038168) internal successors, (138), 131 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) [2024-11-28 03:18:12,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 138 transitions. [2024-11-28 03:18:12,993 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 138 transitions. Word has length 121 [2024-11-28 03:18:12,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:12,993 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 138 transitions. [2024-11-28 03:18:12,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 29 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) [2024-11-28 03:18:12,993 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 138 transitions. [2024-11-28 03:18:12,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 03:18:12,994 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:12,994 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:13,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 03:18:13,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 03:18:13,195 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:18:13,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:13,195 INFO L85 PathProgramCache]: Analyzing trace with hash -563387378, now seen corresponding path program 20 times [2024-11-28 03:18:13,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:13,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44440368] [2024-11-28 03:18:13,195 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:18:13,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:13,237 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:18:13,237 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:18:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:24,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:24,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44440368] [2024-11-28 03:18:24,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44440368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:24,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040275378] [2024-11-28 03:18:24,133 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:18:24,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:24,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:24,136 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:24,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:18:24,289 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:18:24,289 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:18:24,295 WARN L254 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 217 conjuncts are in the unsatisfiable core [2024-11-28 03:18:24,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:24,396 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 [2024-11-28 03:18:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:25,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:27,625 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 03:18:27,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040275378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:27,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:27,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 30, 21] total 83 [2024-11-28 03:18:27,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450961294] [2024-11-28 03:18:27,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:27,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-28 03:18:27,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:27,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-28 03:18:27,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=6326, Unknown=0, NotChecked=0, Total=6806 [2024-11-28 03:18:27,629 INFO L87 Difference]: Start difference. First operand 132 states and 138 transitions. Second operand has 83 states, 83 states have (on average 3.8313253012048194) internal successors, (318), 83 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:33,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:33,124 INFO L93 Difference]: Finished difference Result 235 states and 246 transitions. [2024-11-28 03:18:33,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 03:18:33,125 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.8313253012048194) internal successors, (318), 83 states have internal predecessors, (318), 0 states have call successors, (0), 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 131 [2024-11-28 03:18:33,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:33,126 INFO L225 Difference]: With dead ends: 235 [2024-11-28 03:18:33,126 INFO L226 Difference]: Without dead ends: 231 [2024-11-28 03:18:33,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3177 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=795, Invalid=10335, Unknown=0, NotChecked=0, Total=11130 [2024-11-28 03:18:33,128 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 156 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 5440 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 5597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 5440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:33,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 165 Invalid, 5597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 5440 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 03:18:33,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-28 03:18:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 209. [2024-11-28 03:18:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.0576923076923077) internal successors, (220), 208 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 220 transitions. [2024-11-28 03:18:33,179 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 220 transitions. Word has length 131 [2024-11-28 03:18:33,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:33,179 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 220 transitions. [2024-11-28 03:18:33,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.8313253012048194) internal successors, (318), 83 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:33,180 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 220 transitions. [2024-11-28 03:18:33,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-28 03:18:33,180 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:33,181 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:33,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 03:18:33,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 03:18:33,385 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:18:33,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:33,386 INFO L85 PathProgramCache]: Analyzing trace with hash 50548274, now seen corresponding path program 21 times [2024-11-28 03:18:33,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:33,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290493757] [2024-11-28 03:18:33,386 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:18:33,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:33,497 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 03:18:33,497 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:18:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 49 proven. 96 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-28 03:18:33,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:33,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290493757] [2024-11-28 03:18:33,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290493757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:33,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094170604] [2024-11-28 03:18:33,924 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:18:33,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:33,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:33,926 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:33,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:18:34,137 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 03:18:34,137 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:18:34,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 03:18:34,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-28 03:18:34,386 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-28 03:18:34,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094170604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:34,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:34,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-28 03:18:34,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146026763] [2024-11-28 03:18:34,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:34,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 03:18:34,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:34,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 03:18:34,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:18:34,615 INFO L87 Difference]: Start difference. First operand 209 states and 220 transitions. Second operand has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 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) [2024-11-28 03:18:36,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:36,036 INFO L93 Difference]: Finished difference Result 413 states and 439 transitions. [2024-11-28 03:18:36,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 03:18:36,036 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 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) Word has length 133 [2024-11-28 03:18:36,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:36,038 INFO L225 Difference]: With dead ends: 413 [2024-11-28 03:18:36,038 INFO L226 Difference]: Without dead ends: 260 [2024-11-28 03:18:36,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 246 SyntacticMatches, 18 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=546, Invalid=2004, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 03:18:36,040 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 193 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1977 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:36,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 52 Invalid, 2184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1977 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:18:36,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-28 03:18:36,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 219. [2024-11-28 03:18:36,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.055045871559633) internal successors, (230), 218 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:18:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 230 transitions. [2024-11-28 03:18:36,117 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 230 transitions. Word has length 133 [2024-11-28 03:18:36,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:36,118 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 230 transitions. [2024-11-28 03:18:36,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 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) [2024-11-28 03:18:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 230 transitions. [2024-11-28 03:18:36,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-28 03:18:36,119 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:36,119 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:36,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 03:18:36,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 03:18:36,319 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:18:36,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:36,320 INFO L85 PathProgramCache]: Analyzing trace with hash -310612878, now seen corresponding path program 22 times [2024-11-28 03:18:36,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:36,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515707293] [2024-11-28 03:18:36,320 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:18:36,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:36,340 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:18:36,340 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:18:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-28 03:18:36,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:36,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515707293] [2024-11-28 03:18:36,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515707293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:36,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079019820] [2024-11-28 03:18:36,650 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:18:36,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:36,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:36,652 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:36,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:18:36,773 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:18:36,773 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:18:36,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 03:18:36,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:37,182 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-28 03:18:37,182 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-28 03:18:37,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079019820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:18:37,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:18:37,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 30 [2024-11-28 03:18:37,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607166583] [2024-11-28 03:18:37,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:18:37,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 03:18:37,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:37,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 03:18:37,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2024-11-28 03:18:37,461 INFO L87 Difference]: Start difference. First operand 219 states and 230 transitions. Second operand has 30 states, 30 states have (on average 2.7) internal successors, (81), 30 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) [2024-11-28 03:18:38,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:38,244 INFO L93 Difference]: Finished difference Result 367 states and 384 transitions. [2024-11-28 03:18:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:18:38,245 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 30 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2024-11-28 03:18:38,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:38,247 INFO L225 Difference]: With dead ends: 367 [2024-11-28 03:18:38,247 INFO L226 Difference]: Without dead ends: 153 [2024-11-28 03:18:38,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 239 SyntacticMatches, 18 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 03:18:38,248 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 340 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:38,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 32 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:18:38,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-28 03:18:38,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 146. [2024-11-28 03:18:38,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.0482758620689656) internal successors, (152), 145 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) [2024-11-28 03:18:38,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 152 transitions. [2024-11-28 03:18:38,302 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 152 transitions. Word has length 133 [2024-11-28 03:18:38,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:38,302 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 152 transitions. [2024-11-28 03:18:38,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7) internal successors, (81), 30 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) [2024-11-28 03:18:38,303 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 152 transitions. [2024-11-28 03:18:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 03:18:38,303 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:38,303 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:38,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 03:18:38,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 03:18:38,504 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:18:38,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:38,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1819684746, now seen corresponding path program 23 times [2024-11-28 03:18:38,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:38,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765929000] [2024-11-28 03:18:38,505 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:18:38,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:38,738 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 03:18:38,738 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:18:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:53,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:53,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765929000] [2024-11-28 03:18:53,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765929000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:18:53,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737774254] [2024-11-28 03:18:53,588 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:18:53,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:53,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:53,590 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:53,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 03:18:57,035 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 03:18:57,035 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:18:57,046 WARN L254 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 259 conjuncts are in the unsatisfiable core [2024-11-28 03:18:57,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:57,155 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 [2024-11-28 03:18:57,256 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 19 treesize of output 18 [2024-11-28 03:18:57,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:57,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-28 03:18:57,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:57,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-28 03:18:57,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:57,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-28 03:18:57,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:57,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-28 03:18:57,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:57,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-28 03:18:58,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:58,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2024-11-28 03:18:58,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:18:58,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2024-11-28 03:19:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:19:04,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:19:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 03:19:08,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737774254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:19:08,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:19:08,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 33, 23] total 111 [2024-11-28 03:19:08,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757284848] [2024-11-28 03:19:08,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:19:08,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2024-11-28 03:19:08,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:19:08,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2024-11-28 03:19:08,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=445, Invalid=11765, Unknown=0, NotChecked=0, Total=12210 [2024-11-28 03:19:08,234 INFO L87 Difference]: Start difference. First operand 146 states and 152 transitions. Second operand has 111 states, 111 states have (on average 3.684684684684685) internal successors, (409), 111 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:13,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:19:13,979 INFO L93 Difference]: Finished difference Result 259 states and 270 transitions. [2024-11-28 03:19:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 03:19:13,980 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 3.684684684684685) internal successors, (409), 111 states have internal predecessors, (409), 0 states have call successors, (0), 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 145 [2024-11-28 03:19:13,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:19:13,981 INFO L225 Difference]: With dead ends: 259 [2024-11-28 03:19:13,981 INFO L226 Difference]: Without dead ends: 255 [2024-11-28 03:19:13,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3549 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=445, Invalid=11765, Unknown=0, NotChecked=0, Total=12210 [2024-11-28 03:19:13,983 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 21 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 7998 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 8004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:19:13,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 318 Invalid, 8004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7998 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-28 03:19:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-28 03:19:14,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 231. [2024-11-28 03:19:14,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.0521739130434782) internal successors, (242), 230 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:14,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 242 transitions. [2024-11-28 03:19:14,061 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 242 transitions. Word has length 145 [2024-11-28 03:19:14,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:19:14,062 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 242 transitions. [2024-11-28 03:19:14,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 3.684684684684685) internal successors, (409), 111 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:14,062 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 242 transitions. [2024-11-28 03:19:14,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 03:19:14,063 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:19:14,063 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:19:14,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 03:19:14,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 03:19:14,264 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:19:14,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:19:14,264 INFO L85 PathProgramCache]: Analyzing trace with hash 391961262, now seen corresponding path program 24 times [2024-11-28 03:19:14,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:19:14,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893289379] [2024-11-28 03:19:14,265 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:19:14,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:19:14,358 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 03:19:14,359 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:19:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 64 proven. 117 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-28 03:19:14,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:19:14,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893289379] [2024-11-28 03:19:14,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893289379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:19:14,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028462910] [2024-11-28 03:19:14,784 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:19:14,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:19:14,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:19:14,786 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:19:14,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:19:15,127 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 03:19:15,127 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:19:15,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 03:19:15,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:19:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-28 03:19:15,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:19:15,706 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-28 03:19:15,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028462910] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:19:15,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:19:15,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-28 03:19:15,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826707474] [2024-11-28 03:19:15,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:19:15,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 03:19:15,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:19:15,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 03:19:15,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 03:19:15,708 INFO L87 Difference]: Start difference. First operand 231 states and 242 transitions. Second operand has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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) [2024-11-28 03:19:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:19:17,088 INFO L93 Difference]: Finished difference Result 455 states and 481 transitions. [2024-11-28 03:19:17,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 03:19:17,089 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2024-11-28 03:19:17,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:19:17,090 INFO L225 Difference]: With dead ends: 455 [2024-11-28 03:19:17,091 INFO L226 Difference]: Without dead ends: 286 [2024-11-28 03:19:17,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 272 SyntacticMatches, 20 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1231 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=654, Invalid=2426, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 03:19:17,092 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 236 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:19:17,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 45 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:19:17,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-28 03:19:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 241. [2024-11-28 03:19:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.05) internal successors, (252), 240 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 252 transitions. [2024-11-28 03:19:17,206 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 252 transitions. Word has length 147 [2024-11-28 03:19:17,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:19:17,206 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 252 transitions. [2024-11-28 03:19:17,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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) [2024-11-28 03:19:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 252 transitions. [2024-11-28 03:19:17,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 03:19:17,208 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:19:17,208 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:19:17,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 03:19:17,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 03:19:17,408 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:19:17,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:19:17,409 INFO L85 PathProgramCache]: Analyzing trace with hash 604129518, now seen corresponding path program 25 times [2024-11-28 03:19:17,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:19:17,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309641195] [2024-11-28 03:19:17,409 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:19:17,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:19:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:19:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 83 proven. 98 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-28 03:19:17,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:19:17,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309641195] [2024-11-28 03:19:17,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309641195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:19:17,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079736411] [2024-11-28 03:19:17,776 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:19:17,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:19:17,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:19:17,779 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:19:17,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 03:19:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:19:17,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 03:19:17,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:19:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-28 03:19:18,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:19:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-28 03:19:18,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079736411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:19:18,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:19:18,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-28 03:19:18,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265880854] [2024-11-28 03:19:18,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:19:18,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 03:19:18,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:19:18,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 03:19:18,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 03:19:18,758 INFO L87 Difference]: Start difference. First operand 241 states and 252 transitions. Second operand has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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) [2024-11-28 03:19:19,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:19:19,706 INFO L93 Difference]: Finished difference Result 403 states and 420 transitions. [2024-11-28 03:19:19,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:19:19,706 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2024-11-28 03:19:19,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:19:19,708 INFO L225 Difference]: With dead ends: 403 [2024-11-28 03:19:19,708 INFO L226 Difference]: Without dead ends: 167 [2024-11-28 03:19:19,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 263 SyntacticMatches, 19 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=471, Invalid=1421, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 03:19:19,709 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 458 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:19:19,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 35 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:19:19,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-28 03:19:19,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 160. [2024-11-28 03:19:19,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.0440251572327044) internal successors, (166), 159 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:19,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 166 transitions. [2024-11-28 03:19:19,767 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 166 transitions. Word has length 147 [2024-11-28 03:19:19,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:19:19,767 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 166 transitions. [2024-11-28 03:19:19,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 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) [2024-11-28 03:19:19,767 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 166 transitions. [2024-11-28 03:19:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 03:19:19,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:19:19,768 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:19:19,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 03:19:19,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:19:19,968 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:19:19,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:19:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash 396538374, now seen corresponding path program 26 times [2024-11-28 03:19:19,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:19:19,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046046906] [2024-11-28 03:19:19,969 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:19:19,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:19:20,037 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:19:20,037 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:19:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 0 proven. 700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:19:35,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:19:35,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046046906] [2024-11-28 03:19:35,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046046906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:19:35,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706686058] [2024-11-28 03:19:35,553 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:19:35,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:19:35,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:19:35,555 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:19:35,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 03:19:35,710 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:19:35,710 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:19:35,714 WARN L254 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 269 conjuncts are in the unsatisfiable core [2024-11-28 03:19:35,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:19:35,815 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 [2024-11-28 03:19:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 0 proven. 700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:19:37,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:19:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 03:19:41,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706686058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:19:41,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:19:41,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 36, 25] total 106 [2024-11-28 03:19:41,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321290467] [2024-11-28 03:19:41,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:19:41,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-11-28 03:19:41,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:19:41,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-11-28 03:19:41,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=10560, Unknown=0, NotChecked=0, Total=11130 [2024-11-28 03:19:41,458 INFO L87 Difference]: Start difference. First operand 160 states and 166 transitions. Second operand has 106 states, 106 states have (on average 3.641509433962264) internal successors, (386), 106 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:57,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:19:57,632 INFO L93 Difference]: Finished difference Result 468 states and 510 transitions. [2024-11-28 03:19:57,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-28 03:19:57,633 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 3.641509433962264) internal successors, (386), 106 states have internal predecessors, (386), 0 states have call successors, (0), 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 159 [2024-11-28 03:19:57,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:19:57,634 INFO L225 Difference]: With dead ends: 468 [2024-11-28 03:19:57,634 INFO L226 Difference]: Without dead ends: 352 [2024-11-28 03:19:57,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 297 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6240 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=1741, Invalid=24019, Unknown=0, NotChecked=0, Total=25760 [2024-11-28 03:19:57,636 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 584 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 9477 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 10176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 9477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:19:57,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 226 Invalid, 10176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 9477 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-28 03:19:57,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-28 03:19:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 323. [2024-11-28 03:19:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.1055900621118013) internal successors, (356), 322 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 356 transitions. [2024-11-28 03:19:57,783 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 356 transitions. Word has length 159 [2024-11-28 03:19:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:19:57,784 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 356 transitions. [2024-11-28 03:19:57,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 3.641509433962264) internal successors, (386), 106 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 356 transitions. [2024-11-28 03:19:57,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-28 03:19:57,785 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:19:57,786 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:19:57,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 03:19:57,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 03:19:57,986 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:19:57,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:19:57,987 INFO L85 PathProgramCache]: Analyzing trace with hash -289286294, now seen corresponding path program 27 times [2024-11-28 03:19:57,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:19:57,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189211682] [2024-11-28 03:19:57,987 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:19:57,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:19:58,178 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-28 03:19:58,178 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:19:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 102 proven. 119 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-28 03:19:58,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:19:58,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189211682] [2024-11-28 03:19:58,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189211682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:19:58,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538900253] [2024-11-28 03:19:58,762 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:19:58,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:19:58,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:19:58,765 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:19:58,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 03:19:59,121 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-28 03:19:59,121 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:19:59,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:19:59,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:19:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-28 03:19:59,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:19:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-28 03:19:59,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538900253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:19:59,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:19:59,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-11-28 03:19:59,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299999994] [2024-11-28 03:19:59,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:19:59,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 03:19:59,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:19:59,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 03:19:59,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:19:59,717 INFO L87 Difference]: Start difference. First operand 323 states and 356 transitions. Second operand has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 38 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:20:00,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:20:00,717 INFO L93 Difference]: Finished difference Result 660 states and 711 transitions. [2024-11-28 03:20:00,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 03:20:00,717 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 38 states have internal predecessors, (99), 0 states have call successors, (0), 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 161 [2024-11-28 03:20:00,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:20:00,719 INFO L225 Difference]: With dead ends: 660 [2024-11-28 03:20:00,719 INFO L226 Difference]: Without dead ends: 273 [2024-11-28 03:20:00,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 288 SyntacticMatches, 21 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 03:20:00,720 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 367 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:20:00,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 42 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:20:00,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-28 03:20:00,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 260. [2024-11-28 03:20:00,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.0424710424710424) internal successors, (270), 259 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:20:00,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 270 transitions. [2024-11-28 03:20:00,876 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 270 transitions. Word has length 161 [2024-11-28 03:20:00,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:20:00,876 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 270 transitions. [2024-11-28 03:20:00,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 38 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:20:00,877 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 270 transitions. [2024-11-28 03:20:00,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-28 03:20:00,878 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:20:00,878 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:20:00,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 03:20:01,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:20:01,078 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:20:01,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:20:01,079 INFO L85 PathProgramCache]: Analyzing trace with hash -254289906, now seen corresponding path program 28 times [2024-11-28 03:20:01,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:20:01,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390355066] [2024-11-28 03:20:01,079 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:20:01,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:20:01,115 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:20:01,116 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:20:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2024-11-28 03:20:01,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:20:01,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390355066] [2024-11-28 03:20:01,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390355066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:20:01,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614909782] [2024-11-28 03:20:01,502 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:20:01,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:20:01,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:20:01,504 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:20:01,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 03:20:01,648 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:20:01,648 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:20:01,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:20:01,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:20:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2024-11-28 03:20:01,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:20:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2024-11-28 03:20:02,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614909782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:20:02,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:20:02,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 36 [2024-11-28 03:20:02,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726716518] [2024-11-28 03:20:02,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:20:02,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 03:20:02,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:20:02,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 03:20:02,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:20:02,355 INFO L87 Difference]: Start difference. First operand 260 states and 270 transitions. Second operand has 36 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 36 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) [2024-11-28 03:20:03,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:20:03,463 INFO L93 Difference]: Finished difference Result 272 states and 282 transitions. [2024-11-28 03:20:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 03:20:03,463 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 36 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2024-11-28 03:20:03,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:20:03,465 INFO L225 Difference]: With dead ends: 272 [2024-11-28 03:20:03,465 INFO L226 Difference]: Without dead ends: 180 [2024-11-28 03:20:03,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 294 SyntacticMatches, 23 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=769, Invalid=2653, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 03:20:03,466 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 313 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:20:03,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 53 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:20:03,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-28 03:20:03,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 174. [2024-11-28 03:20:03,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.0404624277456647) internal successors, (180), 173 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:20:03,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 180 transitions. [2024-11-28 03:20:03,561 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 180 transitions. Word has length 163 [2024-11-28 03:20:03,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:20:03,562 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 180 transitions. [2024-11-28 03:20:03,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.5833333333333335) internal successors, (93), 36 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) [2024-11-28 03:20:03,562 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 180 transitions. [2024-11-28 03:20:03,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-28 03:20:03,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:20:03,563 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:20:03,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-28 03:20:03,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:20:03,764 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:20:03,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:20:03,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2043980674, now seen corresponding path program 29 times [2024-11-28 03:20:03,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:20:03,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661766736] [2024-11-28 03:20:03,764 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:20:03,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:20:03,999 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-28 03:20:03,999 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:20:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 847 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:20:31,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:20:31,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661766736] [2024-11-28 03:20:31,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661766736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:20:31,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156071295] [2024-11-28 03:20:31,580 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:20:31,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:20:31,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:20:31,581 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:20:31,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 03:20:32,648 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-28 03:20:32,648 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:20:32,657 WARN L254 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 313 conjuncts are in the unsatisfiable core [2024-11-28 03:20:32,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:20:32,866 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 [2024-11-28 03:20:32,977 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 19 treesize of output 18 [2024-11-28 03:20:33,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:33,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-28 03:20:33,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:33,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-28 03:20:33,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:33,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-28 03:20:33,562 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:33,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-28 03:20:33,738 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:33,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-28 03:20:33,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:33,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2024-11-28 03:20:34,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:34,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2024-11-28 03:20:34,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:20:34,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 75 treesize of output 98 [2024-11-28 03:20:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 847 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:20:45,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:20:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 726 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-28 03:20:50,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156071295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:20:50,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:20:50,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 39, 27] total 133 [2024-11-28 03:20:50,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054264615] [2024-11-28 03:20:50,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:20:50,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2024-11-28 03:20:50,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:20:50,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2024-11-28 03:20:50,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=17090, Unknown=0, NotChecked=0, Total=17556 [2024-11-28 03:20:50,954 INFO L87 Difference]: Start difference. First operand 174 states and 180 transitions. Second operand has 133 states, 133 states have (on average 3.6466165413533833) internal successors, (485), 133 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:21:06,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:21:06,377 INFO L93 Difference]: Finished difference Result 307 states and 318 transitions. [2024-11-28 03:21:06,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 03:21:06,378 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 3.6466165413533833) internal successors, (485), 133 states have internal predecessors, (485), 0 states have call successors, (0), 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 173 [2024-11-28 03:21:06,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:21:06,380 INFO L225 Difference]: With dead ends: 307 [2024-11-28 03:21:06,380 INFO L226 Difference]: Without dead ends: 303 [2024-11-28 03:21:06,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 299 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6169 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=705, Invalid=27017, Unknown=0, NotChecked=0, Total=27722 [2024-11-28 03:21:06,382 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 87 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 11541 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 11608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 11541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:21:06,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 299 Invalid, 11608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 11541 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-28 03:21:06,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-28 03:21:06,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 275. [2024-11-28 03:21:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.0437956204379562) internal successors, (286), 274 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:21:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 286 transitions. [2024-11-28 03:21:06,483 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 286 transitions. Word has length 173 [2024-11-28 03:21:06,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:21:06,484 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 286 transitions. [2024-11-28 03:21:06,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 3.6466165413533833) internal successors, (485), 133 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:21:06,484 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 286 transitions. [2024-11-28 03:21:06,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-28 03:21:06,485 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:21:06,485 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:21:06,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 03:21:06,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:21:06,686 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:21:06,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:21:06,687 INFO L85 PathProgramCache]: Analyzing trace with hash -338716506, now seen corresponding path program 30 times [2024-11-28 03:21:06,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:21:06,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114713453] [2024-11-28 03:21:06,687 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:21:06,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:21:06,880 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-28 03:21:06,880 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:21:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 100 proven. 165 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-28 03:21:07,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:21:07,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114713453] [2024-11-28 03:21:07,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114713453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:21:07,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530518867] [2024-11-28 03:21:07,435 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:21:07,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:21:07,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:21:07,437 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:21:07,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 03:21:08,136 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-28 03:21:08,136 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:21:08,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 03:21:08,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:21:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-28 03:21:08,540 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:21:08,968 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-28 03:21:08,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530518867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:21:08,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:21:08,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-11-28 03:21:08,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272253654] [2024-11-28 03:21:08,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:21:08,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 03:21:08,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:21:08,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 03:21:08,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:21:08,970 INFO L87 Difference]: Start difference. First operand 275 states and 286 transitions. Second operand has 41 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 41 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:21:10,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:21:10,920 INFO L93 Difference]: Finished difference Result 539 states and 565 transitions. [2024-11-28 03:21:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 03:21:10,920 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 41 states have internal predecessors, (105), 0 states have call successors, (0), 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 175 [2024-11-28 03:21:10,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:21:10,922 INFO L225 Difference]: With dead ends: 539 [2024-11-28 03:21:10,922 INFO L226 Difference]: Without dead ends: 338 [2024-11-28 03:21:10,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 324 SyntacticMatches, 24 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1745 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=900, Invalid=3390, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 03:21:10,923 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 313 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 2805 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 3140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:21:10,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 51 Invalid, 3140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2805 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 03:21:10,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-28 03:21:11,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 285. [2024-11-28 03:21:11,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.0422535211267605) internal successors, (296), 284 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:21:11,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 296 transitions. [2024-11-28 03:21:11,072 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 296 transitions. Word has length 175 [2024-11-28 03:21:11,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:21:11,072 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 296 transitions. [2024-11-28 03:21:11,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 41 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:21:11,072 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 296 transitions. [2024-11-28 03:21:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-28 03:21:11,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:21:11,073 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:21:11,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 03:21:11,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:21:11,277 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:21:11,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:21:11,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1404151526, now seen corresponding path program 31 times [2024-11-28 03:21:11,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:21:11,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602336903] [2024-11-28 03:21:11,278 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:21:11,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:21:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:21:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 123 proven. 142 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-28 03:21:11,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:21:11,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602336903] [2024-11-28 03:21:11,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602336903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:21:11,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621608918] [2024-11-28 03:21:11,782 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:21:11,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:21:11,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:21:11,784 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:21:11,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 03:21:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:21:11,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 03:21:11,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:21:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-28 03:21:12,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:21:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-28 03:21:12,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621608918] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:21:12,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:21:12,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-11-28 03:21:12,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620996394] [2024-11-28 03:21:12,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:21:12,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 03:21:12,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:21:12,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 03:21:12,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:21:12,892 INFO L87 Difference]: Start difference. First operand 285 states and 296 transitions. Second operand has 41 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 41 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:21:14,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:21:14,038 INFO L93 Difference]: Finished difference Result 475 states and 492 transitions. [2024-11-28 03:21:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:21:14,039 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 41 states have internal predecessors, (105), 0 states have call successors, (0), 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 175 [2024-11-28 03:21:14,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:21:14,040 INFO L225 Difference]: With dead ends: 475 [2024-11-28 03:21:14,040 INFO L226 Difference]: Without dead ends: 195 [2024-11-28 03:21:14,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 313 SyntacticMatches, 23 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=648, Invalid=2004, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 03:21:14,041 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 610 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:21:14,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 46 Invalid, 1735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:21:14,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-28 03:21:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 188. [2024-11-28 03:21:14,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.0374331550802138) internal successors, (194), 187 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:21:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 194 transitions. [2024-11-28 03:21:14,130 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 194 transitions. Word has length 175 [2024-11-28 03:21:14,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:21:14,131 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 194 transitions. [2024-11-28 03:21:14,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 41 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:21:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 194 transitions. [2024-11-28 03:21:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-28 03:21:14,132 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:21:14,132 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:21:14,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 03:21:14,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:21:14,333 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:21:14,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:21:14,333 INFO L85 PathProgramCache]: Analyzing trace with hash -815801346, now seen corresponding path program 32 times [2024-11-28 03:21:14,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:21:14,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220854931] [2024-11-28 03:21:14,333 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:21:14,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:21:14,417 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:21:14,417 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:21:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:21:36,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:21:36,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220854931] [2024-11-28 03:21:36,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220854931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:21:36,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472509994] [2024-11-28 03:21:36,552 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:21:36,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:21:36,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:21:36,554 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:21:36,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 03:21:36,767 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:21:36,767 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:21:36,773 WARN L254 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 321 conjuncts are in the unsatisfiable core [2024-11-28 03:21:36,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:21:36,929 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 [2024-11-28 03:21:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:21:38,746 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:21:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 0 proven. 864 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-28 03:21:44,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472509994] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:21:44,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:21:44,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 42, 29] total 119 [2024-11-28 03:21:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120311384] [2024-11-28 03:21:44,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:21:44,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-11-28 03:21:44,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:21:44,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-11-28 03:21:44,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=848, Invalid=13194, Unknown=0, NotChecked=0, Total=14042 [2024-11-28 03:21:44,048 INFO L87 Difference]: Start difference. First operand 188 states and 194 transitions. Second operand has 119 states, 119 states have (on average 3.8151260504201683) internal successors, (454), 119 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:21:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:21:56,812 INFO L93 Difference]: Finished difference Result 331 states and 342 transitions. [2024-11-28 03:21:56,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-28 03:21:56,813 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 3.8151260504201683) internal successors, (454), 119 states have internal predecessors, (454), 0 states have call successors, (0), 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 187 [2024-11-28 03:21:56,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:21:56,814 INFO L225 Difference]: With dead ends: 331 [2024-11-28 03:21:56,814 INFO L226 Difference]: Without dead ends: 327 [2024-11-28 03:21:56,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 352 SyntacticMatches, 1 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5932 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=1463, Invalid=22099, Unknown=0, NotChecked=0, Total=23562 [2024-11-28 03:21:56,816 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 283 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 10376 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 10666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 10376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:21:56,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 207 Invalid, 10666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 10376 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2024-11-28 03:21:56,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-28 03:21:56,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 297. [2024-11-28 03:21:56,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.0405405405405406) internal successors, (308), 296 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:21:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 308 transitions. [2024-11-28 03:21:56,936 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 308 transitions. Word has length 187 [2024-11-28 03:21:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:21:56,936 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 308 transitions. [2024-11-28 03:21:56,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 3.8151260504201683) internal successors, (454), 119 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:21:56,936 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 308 transitions. [2024-11-28 03:21:56,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-28 03:21:56,937 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:21:56,937 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:21:56,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 03:21:57,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:21:57,138 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:21:57,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:21:57,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1010846242, now seen corresponding path program 33 times [2024-11-28 03:21:57,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:21:57,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116004799] [2024-11-28 03:21:57,138 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:21:57,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:21:57,414 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-28 03:21:57,414 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:21:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 121 proven. 192 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-28 03:21:58,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:21:58,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116004799] [2024-11-28 03:21:58,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116004799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:21:58,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68165218] [2024-11-28 03:21:58,029 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:21:58,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:21:58,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:21:58,033 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:21:58,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 03:21:58,534 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-28 03:21:58,535 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:21:58,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 03:21:58,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:21:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-28 03:21:58,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:21:59,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-28 03:21:59,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68165218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:21:59,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:21:59,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-11-28 03:21:59,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429126703] [2024-11-28 03:21:59,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:21:59,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 03:21:59,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:21:59,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 03:21:59,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 03:21:59,329 INFO L87 Difference]: Start difference. First operand 297 states and 308 transitions. Second operand has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 44 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:22:01,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:22:01,424 INFO L93 Difference]: Finished difference Result 581 states and 607 transitions. [2024-11-28 03:22:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 03:22:01,425 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 44 states have internal predecessors, (111), 0 states have call successors, (0), 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 189 [2024-11-28 03:22:01,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:22:01,427 INFO L225 Difference]: With dead ends: 581 [2024-11-28 03:22:01,427 INFO L226 Difference]: Without dead ends: 364 [2024-11-28 03:22:01,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 350 SyntacticMatches, 26 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2035 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1038, Invalid=3932, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 03:22:01,428 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 402 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2948 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 3259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:22:01,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 60 Invalid, 3259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2948 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 03:22:01,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-28 03:22:01,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 307. [2024-11-28 03:22:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.0392156862745099) internal successors, (318), 306 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:22:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 318 transitions. [2024-11-28 03:22:01,563 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 318 transitions. Word has length 189 [2024-11-28 03:22:01,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:22:01,564 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 318 transitions. [2024-11-28 03:22:01,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 44 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:22:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 318 transitions. [2024-11-28 03:22:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-28 03:22:01,565 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:22:01,565 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:01,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 03:22:01,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 03:22:01,766 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:22:01,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:01,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1932699746, now seen corresponding path program 34 times [2024-11-28 03:22:01,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:01,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966500169] [2024-11-28 03:22:01,767 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:22:01,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:01,806 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:22:01,806 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:22:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-28 03:22:02,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:02,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966500169] [2024-11-28 03:22:02,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966500169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:22:02,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022318579] [2024-11-28 03:22:02,341 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:22:02,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:02,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:22:02,343 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:22:02,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 03:22:02,526 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:22:02,526 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:22:02,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 03:22:02,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:22:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-28 03:22:03,079 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:22:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-28 03:22:03,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022318579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:22:03,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:22:03,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 42 [2024-11-28 03:22:03,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404210874] [2024-11-28 03:22:03,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:22:03,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-28 03:22:03,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:22:03,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-28 03:22:03,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 03:22:03,524 INFO L87 Difference]: Start difference. First operand 307 states and 318 transitions. Second operand has 42 states, 42 states have (on average 2.5) internal successors, (105), 42 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:22:04,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:22:04,729 INFO L93 Difference]: Finished difference Result 511 states and 528 transitions. [2024-11-28 03:22:04,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 03:22:04,729 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.5) internal successors, (105), 42 states have internal predecessors, (105), 0 states have call successors, (0), 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 189 [2024-11-28 03:22:04,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:22:04,732 INFO L225 Difference]: With dead ends: 511 [2024-11-28 03:22:04,732 INFO L226 Difference]: Without dead ends: 209 [2024-11-28 03:22:04,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 339 SyntacticMatches, 26 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=731, Invalid=2239, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 03:22:04,734 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 512 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:22:04,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 50 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:22:04,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-28 03:22:04,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 202. [2024-11-28 03:22:04,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.0348258706467661) internal successors, (208), 201 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:22:04,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 208 transitions. [2024-11-28 03:22:04,817 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 208 transitions. Word has length 189 [2024-11-28 03:22:04,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:22:04,817 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 208 transitions. [2024-11-28 03:22:04,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.5) internal successors, (105), 42 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:22:04,817 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 208 transitions. [2024-11-28 03:22:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-28 03:22:04,818 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:22:04,818 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:04,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 03:22:05,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:05,019 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:22:05,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:05,019 INFO L85 PathProgramCache]: Analyzing trace with hash -217578630, now seen corresponding path program 35 times [2024-11-28 03:22:05,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:05,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143677044] [2024-11-28 03:22:05,020 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:22:05,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:05,247 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-28 03:22:05,247 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:22:36,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 0 proven. 1183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:36,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:36,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143677044] [2024-11-28 03:22:36,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143677044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:22:36,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939897907] [2024-11-28 03:22:36,600 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:22:36,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:36,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:22:36,602 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:22:36,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 03:22:42,166 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-28 03:22:42,167 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:22:42,180 WARN L254 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 369 conjuncts are in the unsatisfiable core [2024-11-28 03:22:42,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:22:42,433 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 [2024-11-28 03:22:42,572 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 19 treesize of output 18 [2024-11-28 03:22:42,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:42,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-28 03:22:42,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:42,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-28 03:22:43,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:43,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-28 03:22:43,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:43,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-28 03:22:43,432 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:43,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-28 03:22:43,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:43,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2024-11-28 03:22:43,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:43,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2024-11-28 03:22:44,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:44,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 75 treesize of output 98 [2024-11-28 03:22:44,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:44,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 82 treesize of output 108 [2024-11-28 03:22:44,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:44,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 89 treesize of output 118 [2024-11-28 03:22:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 0 proven. 1183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:57,744 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:23:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 0 proven. 1014 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-28 03:23:04,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939897907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:23:04,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:23:04,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 45, 31] total 151 [2024-11-28 03:23:04,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478797885] [2024-11-28 03:23:04,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:23:04,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2024-11-28 03:23:04,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:23:04,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2024-11-28 03:23:04,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=22080, Unknown=0, NotChecked=0, Total=22650 [2024-11-28 03:23:04,261 INFO L87 Difference]: Start difference. First operand 202 states and 208 transitions. Second operand has 151 states, 151 states have (on average 3.662251655629139) internal successors, (553), 151 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:23:15,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:23:15,884 INFO L93 Difference]: Finished difference Result 355 states and 366 transitions. [2024-11-28 03:23:15,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 03:23:15,884 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 3.662251655629139) internal successors, (553), 151 states have internal predecessors, (553), 0 states have call successors, (0), 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 201 [2024-11-28 03:23:15,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:23:15,886 INFO L225 Difference]: With dead ends: 355 [2024-11-28 03:23:15,886 INFO L226 Difference]: Without dead ends: 351 [2024-11-28 03:23:15,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 351 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6294 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=570, Invalid=22080, Unknown=0, NotChecked=0, Total=22650 [2024-11-28 03:23:15,887 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 27 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 13554 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 13560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:23:15,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 306 Invalid, 13560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13554 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2024-11-28 03:23:15,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-28 03:23:16,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 319. [2024-11-28 03:23:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.0377358490566038) internal successors, (330), 318 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:23:16,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 330 transitions. [2024-11-28 03:23:16,032 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 330 transitions. Word has length 201 [2024-11-28 03:23:16,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:23:16,032 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 330 transitions. [2024-11-28 03:23:16,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 3.662251655629139) internal successors, (553), 151 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:23:16,033 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 330 transitions. [2024-11-28 03:23:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-28 03:23:16,034 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:23:16,034 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:23:16,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 03:23:16,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 03:23:16,235 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:23:16,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:23:16,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1927269730, now seen corresponding path program 36 times [2024-11-28 03:23:16,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:23:16,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523078055] [2024-11-28 03:23:16,235 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:23:16,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:23:16,382 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-28 03:23:16,383 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:23:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 144 proven. 221 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2024-11-28 03:23:17,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:23:17,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523078055] [2024-11-28 03:23:17,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523078055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:23:17,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671982708] [2024-11-28 03:23:17,056 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:23:17,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:23:17,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:23:17,058 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:23:17,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 03:23:17,932 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-28 03:23:17,932 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:23:17,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:23:17,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:23:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2024-11-28 03:23:18,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:23:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2024-11-28 03:23:19,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671982708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:23:19,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:23:19,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-11-28 03:23:19,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620290780] [2024-11-28 03:23:19,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:23:19,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 03:23:19,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:23:19,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 03:23:19,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:23:19,039 INFO L87 Difference]: Start difference. First operand 319 states and 330 transitions. Second operand has 47 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 47 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:23:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:23:21,808 INFO L93 Difference]: Finished difference Result 623 states and 649 transitions. [2024-11-28 03:23:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-28 03:23:21,809 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 47 states have internal predecessors, (117), 0 states have call successors, (0), 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 203 [2024-11-28 03:23:21,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:23:21,811 INFO L225 Difference]: With dead ends: 623 [2024-11-28 03:23:21,811 INFO L226 Difference]: Without dead ends: 390 [2024-11-28 03:23:21,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 376 SyntacticMatches, 28 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2347 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1186, Invalid=4514, Unknown=0, NotChecked=0, Total=5700 [2024-11-28 03:23:21,813 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 323 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 4098 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 4441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 4098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:23:21,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 60 Invalid, 4441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 4098 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 03:23:21,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-28 03:23:21,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 329. [2024-11-28 03:23:21,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.0365853658536586) internal successors, (340), 328 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:23:21,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 340 transitions. [2024-11-28 03:23:21,955 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 340 transitions. Word has length 203 [2024-11-28 03:23:21,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:23:21,955 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 340 transitions. [2024-11-28 03:23:21,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 47 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:23:21,955 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 340 transitions. [2024-11-28 03:23:21,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-28 03:23:21,956 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:23:21,956 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:23:21,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-28 03:23:22,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:23:22,157 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:23:22,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:23:22,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1299112158, now seen corresponding path program 37 times [2024-11-28 03:23:22,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:23:22,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209352570] [2024-11-28 03:23:22,157 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:23:22,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:23:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:23:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 171 proven. 194 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2024-11-28 03:23:22,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:23:22,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209352570] [2024-11-28 03:23:22,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209352570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:23:22,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942564730] [2024-11-28 03:23:22,820 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:23:22,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:23:22,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:23:22,821 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:23:22,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 03:23:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:23:23,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:23:23,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:23:23,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 196 proven. 169 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2024-11-28 03:23:23,789 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:23:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 196 proven. 169 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2024-11-28 03:23:24,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942564730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:23:24,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:23:24,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-11-28 03:23:24,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281244044] [2024-11-28 03:23:24,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:23:24,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 03:23:24,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:23:24,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 03:23:24,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:23:24,336 INFO L87 Difference]: Start difference. First operand 329 states and 340 transitions. Second operand has 47 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 47 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:23:25,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:23:25,739 INFO L93 Difference]: Finished difference Result 547 states and 564 transitions. [2024-11-28 03:23:25,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 03:23:25,740 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 47 states have internal predecessors, (117), 0 states have call successors, (0), 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 203 [2024-11-28 03:23:25,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:23:25,741 INFO L225 Difference]: With dead ends: 547 [2024-11-28 03:23:25,741 INFO L226 Difference]: Without dead ends: 223 [2024-11-28 03:23:25,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 363 SyntacticMatches, 27 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=853, Invalid=2687, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 03:23:25,742 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 851 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:23:25,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 42 Invalid, 1997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:23:25,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-28 03:23:25,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 216. [2024-11-28 03:23:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.0325581395348837) internal successors, (222), 215 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) [2024-11-28 03:23:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 222 transitions. [2024-11-28 03:23:25,868 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 222 transitions. Word has length 203 [2024-11-28 03:23:25,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:23:25,868 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 222 transitions. [2024-11-28 03:23:25,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 47 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:23:25,869 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 222 transitions. [2024-11-28 03:23:25,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-28 03:23:25,870 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:23:25,870 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:23:25,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-28 03:23:26,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 03:23:26,070 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:23:26,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:23:26,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1510007286, now seen corresponding path program 38 times [2024-11-28 03:23:26,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:23:26,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001352387] [2024-11-28 03:23:26,071 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:23:26,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:23:26,208 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:23:26,208 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:23:55,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 0 proven. 1372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:23:55,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:23:55,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001352387] [2024-11-28 03:23:55,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001352387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:23:55,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934160500] [2024-11-28 03:23:55,793 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:23:55,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:23:55,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:23:55,795 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:23:55,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 03:23:56,026 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:23:56,026 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:23:56,032 WARN L254 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 373 conjuncts are in the unsatisfiable core [2024-11-28 03:23:56,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:23:56,176 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 [2024-11-28 03:23:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 0 proven. 1372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:23:58,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:24:05,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-28 03:24:05,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934160500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:24:05,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:24:05,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 48, 33] total 133 [2024-11-28 03:24:05,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118152141] [2024-11-28 03:24:05,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:24:05,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2024-11-28 03:24:05,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:05,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2024-11-28 03:24:05,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=16767, Unknown=0, NotChecked=0, Total=17556 [2024-11-28 03:24:05,698 INFO L87 Difference]: Start difference. First operand 216 states and 222 transitions. Second operand has 133 states, 133 states have (on average 3.789473684210526) internal successors, (504), 133 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:29,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:24:29,773 INFO L93 Difference]: Finished difference Result 408 states and 420 transitions. [2024-11-28 03:24:29,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-28 03:24:29,774 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 3.789473684210526) internal successors, (504), 133 states have internal predecessors, (504), 0 states have call successors, (0), 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 215 [2024-11-28 03:24:29,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:24:29,775 INFO L225 Difference]: With dead ends: 408 [2024-11-28 03:24:29,775 INFO L226 Difference]: Without dead ends: 404 [2024-11-28 03:24:29,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8038 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=1829, Invalid=32953, Unknown=0, NotChecked=0, Total=34782 [2024-11-28 03:24:29,777 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 551 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 16601 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 17163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 16601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:24:29,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 271 Invalid, 17163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 16601 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2024-11-28 03:24:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-28 03:24:29,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 341. [2024-11-28 03:24:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.035294117647059) internal successors, (352), 340 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 352 transitions. [2024-11-28 03:24:29,923 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 352 transitions. Word has length 215 [2024-11-28 03:24:29,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:24:29,924 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 352 transitions. [2024-11-28 03:24:29,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 3.789473684210526) internal successors, (504), 133 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:29,924 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 352 transitions. [2024-11-28 03:24:29,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-28 03:24:29,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:24:29,926 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:24:29,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-28 03:24:30,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:30,126 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:24:30,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:30,127 INFO L85 PathProgramCache]: Analyzing trace with hash 716378650, now seen corresponding path program 39 times [2024-11-28 03:24:30,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:30,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124919914] [2024-11-28 03:24:30,127 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:24:30,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:30,347 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-28 03:24:30,347 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:24:31,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 169 proven. 252 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2024-11-28 03:24:31,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:31,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124919914] [2024-11-28 03:24:31,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124919914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:24:31,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634840743] [2024-11-28 03:24:31,108 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:24:31,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:31,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:24:31,110 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:24:31,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 03:24:32,091 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-28 03:24:32,091 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:24:32,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 03:24:32,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:24:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 196 proven. 225 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2024-11-28 03:24:32,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:24:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 196 proven. 225 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2024-11-28 03:24:33,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634840743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:24:33,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:24:33,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2024-11-28 03:24:33,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784836110] [2024-11-28 03:24:33,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:24:33,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-28 03:24:33,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:33,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-28 03:24:33,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 03:24:33,270 INFO L87 Difference]: Start difference. First operand 341 states and 352 transitions. Second operand has 50 states, 50 states have (on average 2.46) internal successors, (123), 50 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:36,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:24:36,095 INFO L93 Difference]: Finished difference Result 665 states and 691 transitions. [2024-11-28 03:24:36,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-28 03:24:36,096 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.46) internal successors, (123), 50 states have internal predecessors, (123), 0 states have call successors, (0), 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 217 [2024-11-28 03:24:36,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:24:36,099 INFO L225 Difference]: With dead ends: 665 [2024-11-28 03:24:36,099 INFO L226 Difference]: Without dead ends: 416 [2024-11-28 03:24:36,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 402 SyntacticMatches, 30 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2681 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1344, Invalid=5136, Unknown=0, NotChecked=0, Total=6480 [2024-11-28 03:24:36,100 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 412 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3969 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 4396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 3969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:24:36,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 68 Invalid, 4396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 3969 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 03:24:36,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-28 03:24:36,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 351. [2024-11-28 03:24:36,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.0342857142857143) internal successors, (362), 350 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:36,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 362 transitions. [2024-11-28 03:24:36,255 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 362 transitions. Word has length 217 [2024-11-28 03:24:36,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:24:36,255 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 362 transitions. [2024-11-28 03:24:36,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.46) internal successors, (123), 50 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:36,255 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 362 transitions. [2024-11-28 03:24:36,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-28 03:24:36,256 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:24:36,256 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:24:36,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-28 03:24:36,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-28 03:24:36,457 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:24:36,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:36,457 INFO L85 PathProgramCache]: Analyzing trace with hash -643166118, now seen corresponding path program 40 times [2024-11-28 03:24:36,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:36,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602924573] [2024-11-28 03:24:36,458 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:24:36,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:36,497 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:24:36,497 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:24:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 225 proven. 196 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2024-11-28 03:24:37,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:24:37,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602924573] [2024-11-28 03:24:37,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602924573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:24:37,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240796808] [2024-11-28 03:24:37,225 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:24:37,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:37,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:24:37,229 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:24:37,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-28 03:24:37,444 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:24:37,444 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:24:37,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 03:24:37,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:24:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 225 proven. 196 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2024-11-28 03:24:38,160 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:24:38,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 225 proven. 196 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2024-11-28 03:24:38,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240796808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:24:38,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:24:38,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 48 [2024-11-28 03:24:38,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704101694] [2024-11-28 03:24:38,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:24:38,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 03:24:38,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:38,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 03:24:38,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=1713, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 03:24:38,725 INFO L87 Difference]: Start difference. First operand 351 states and 362 transitions. Second operand has 48 states, 48 states have (on average 2.4375) internal successors, (117), 48 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:40,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:24:40,328 INFO L93 Difference]: Finished difference Result 583 states and 600 transitions. [2024-11-28 03:24:40,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 03:24:40,328 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.4375) internal successors, (117), 48 states have internal predecessors, (117), 0 states have call successors, (0), 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 217 [2024-11-28 03:24:40,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:24:40,330 INFO L225 Difference]: With dead ends: 583 [2024-11-28 03:24:40,330 INFO L226 Difference]: Without dead ends: 237 [2024-11-28 03:24:40,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 389 SyntacticMatches, 30 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1590 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=948, Invalid=2958, Unknown=0, NotChecked=0, Total=3906 [2024-11-28 03:24:40,331 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 748 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:24:40,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 50 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:24:40,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-28 03:24:40,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 230. [2024-11-28 03:24:40,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.0305676855895196) internal successors, (236), 229 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:40,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 236 transitions. [2024-11-28 03:24:40,464 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 236 transitions. Word has length 217 [2024-11-28 03:24:40,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:24:40,465 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 236 transitions. [2024-11-28 03:24:40,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.4375) internal successors, (117), 48 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:24:40,465 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 236 transitions. [2024-11-28 03:24:40,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-28 03:24:40,466 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:24:40,466 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:24:40,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-28 03:24:40,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-28 03:24:40,667 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:24:40,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:40,667 INFO L85 PathProgramCache]: Analyzing trace with hash 267270002, now seen corresponding path program 41 times [2024-11-28 03:24:40,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:40,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920917867] [2024-11-28 03:24:40,668 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:24:40,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:24:41,429 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-28 03:24:41,430 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:25:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 0 proven. 1575 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:25:53,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:25:53,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920917867] [2024-11-28 03:25:53,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920917867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:25:53,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204787798] [2024-11-28 03:25:53,657 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:25:53,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:25:53,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:25:53,660 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:25:53,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 03:26:06,601 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-28 03:26:06,601 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:26:06,624 WARN L254 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 424 conjuncts are in the unsatisfiable core [2024-11-28 03:26:06,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:07,172 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 [2024-11-28 03:26:07,358 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 19 treesize of output 18 [2024-11-28 03:26:07,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:26:07,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-28 03:26:07,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:26:07,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-28 03:26:07,996 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:26:07,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-28 03:26:08,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:26:08,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-28 03:26:08,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:26:08,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-28 03:26:08,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:26:08,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2024-11-28 03:26:09,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:26:09,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2024-11-28 03:26:09,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:26:09,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 75 treesize of output 98 [2024-11-28 03:26:09,735 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:26:09,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 82 treesize of output 108 [2024-11-28 03:26:10,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:26:10,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 89 treesize of output 118 [2024-11-28 03:26:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 0 proven. 1575 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:26:28,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:26:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-28 03:26:40,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204787798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:26:40,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:26:40,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 51, 35] total 193 [2024-11-28 03:26:40,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719810775] [2024-11-28 03:26:40,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:26:40,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-28 03:26:40,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:40,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-28 03:26:40,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=749, Invalid=36307, Unknown=0, NotChecked=0, Total=37056 [2024-11-28 03:26:40,838 INFO L87 Difference]: Start difference. First operand 230 states and 236 transitions. Second operand has 193 states, 193 states have (on average 3.3523316062176165) internal successors, (647), 193 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:09,036 INFO L93 Difference]: Finished difference Result 403 states and 414 transitions. [2024-11-28 03:27:09,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-28 03:27:09,036 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 3.3523316062176165) internal successors, (647), 193 states have internal predecessors, (647), 0 states have call successors, (0), 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 229 [2024-11-28 03:27:09,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:09,038 INFO L225 Difference]: With dead ends: 403 [2024-11-28 03:27:09,038 INFO L226 Difference]: Without dead ends: 399 [2024-11-28 03:27:09,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13548 ImplicationChecksByTransitivity, 52.7s TimeCoverageRelationStatistics Valid=912, Invalid=45098, Unknown=0, NotChecked=0, Total=46010 [2024-11-28 03:27:09,039 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 69 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 20497 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 20552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 20497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:09,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 361 Invalid, 20552 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 20497 Invalid, 0 Unknown, 0 Unchecked, 20.2s Time] [2024-11-28 03:27:09,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-11-28 03:27:09,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 363. [2024-11-28 03:27:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.0331491712707181) internal successors, (374), 362 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 374 transitions. [2024-11-28 03:27:09,263 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 374 transitions. Word has length 229 [2024-11-28 03:27:09,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:09,264 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 374 transitions. [2024-11-28 03:27:09,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 3.3523316062176165) internal successors, (647), 193 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 374 transitions. [2024-11-28 03:27:09,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-28 03:27:09,265 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:09,265 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:09,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-28 03:27:09,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-28 03:27:09,466 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:09,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:09,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1538042006, now seen corresponding path program 42 times [2024-11-28 03:27:09,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:09,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840371077] [2024-11-28 03:27:09,466 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:27:09,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:09,816 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-28 03:27:09,816 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:27:10,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1606 backedges. 227 proven. 254 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2024-11-28 03:27:10,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:10,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840371077] [2024-11-28 03:27:10,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840371077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:10,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903090809] [2024-11-28 03:27:10,764 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:27:10,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:10,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:10,766 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:10,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-28 03:27:11,692 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-28 03:27:11,692 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:27:11,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 03:27:11,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1606 backedges. 256 proven. 225 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2024-11-28 03:27:12,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1606 backedges. 256 proven. 225 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2024-11-28 03:27:13,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903090809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:13,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:27:13,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2024-11-28 03:27:13,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691697586] [2024-11-28 03:27:13,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:13,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-28 03:27:13,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:13,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-28 03:27:13,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=2105, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 03:27:13,035 INFO L87 Difference]: Start difference. First operand 363 states and 374 transitions. Second operand has 53 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 53 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:14,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:14,920 INFO L93 Difference]: Finished difference Result 741 states and 767 transitions. [2024-11-28 03:27:14,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 03:27:14,921 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 53 states have internal predecessors, (129), 0 states have call successors, (0), 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 231 [2024-11-28 03:27:14,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:14,923 INFO L225 Difference]: With dead ends: 741 [2024-11-28 03:27:14,923 INFO L226 Difference]: Without dead ends: 383 [2024-11-28 03:27:14,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 413 SyntacticMatches, 31 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2118 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1086, Invalid=3470, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 03:27:14,924 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 840 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 2475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 753 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:14,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 50 Invalid, 2475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [753 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:27:14,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-28 03:27:15,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 370. [2024-11-28 03:27:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 1.029810298102981) internal successors, (380), 369 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:15,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 380 transitions. [2024-11-28 03:27:15,149 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 380 transitions. Word has length 231 [2024-11-28 03:27:15,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:15,149 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 380 transitions. [2024-11-28 03:27:15,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 53 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 380 transitions. [2024-11-28 03:27:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-28 03:27:15,151 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:15,151 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:15,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-28 03:27:15,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-28 03:27:15,355 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:15,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:15,356 INFO L85 PathProgramCache]: Analyzing trace with hash 930023290, now seen corresponding path program 43 times [2024-11-28 03:27:15,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:15,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772370660] [2024-11-28 03:27:15,356 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:27:15,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1637 backedges. 196 proven. 285 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2024-11-28 03:27:16,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:16,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772370660] [2024-11-28 03:27:16,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772370660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:16,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162322593] [2024-11-28 03:27:16,254 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:27:16,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:16,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:16,256 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:16,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-28 03:27:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:16,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 03:27:16,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1637 backedges. 225 proven. 256 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2024-11-28 03:27:17,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1637 backedges. 225 proven. 256 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2024-11-28 03:27:17,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162322593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:17,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:27:17,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2024-11-28 03:27:17,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040235388] [2024-11-28 03:27:17,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:17,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-28 03:27:17,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:17,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-28 03:27:17,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=2105, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 03:27:17,629 INFO L87 Difference]: Start difference. First operand 370 states and 380 transitions. Second operand has 53 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 53 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:19,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:19,815 INFO L93 Difference]: Finished difference Result 382 states and 392 transitions. [2024-11-28 03:27:19,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-28 03:27:19,815 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 53 states have internal predecessors, (129), 0 states have call successors, (0), 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 233 [2024-11-28 03:27:19,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:19,817 INFO L225 Difference]: With dead ends: 382 [2024-11-28 03:27:19,817 INFO L226 Difference]: Without dead ends: 250 [2024-11-28 03:27:19,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 416 SyntacticMatches, 32 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2973 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1505, Invalid=5635, Unknown=0, NotChecked=0, Total=7140 [2024-11-28 03:27:19,818 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 562 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:19,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 37 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:27:19,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-28 03:27:20,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2024-11-28 03:27:20,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.02880658436214) internal successors, (250), 243 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 250 transitions. [2024-11-28 03:27:20,022 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 250 transitions. Word has length 233 [2024-11-28 03:27:20,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:20,022 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 250 transitions. [2024-11-28 03:27:20,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 53 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:20,023 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 250 transitions. [2024-11-28 03:27:20,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-28 03:27:20,024 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:20,024 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:20,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-28 03:27:20,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-28 03:27:20,225 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:20,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:20,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1293696018, now seen corresponding path program 44 times [2024-11-28 03:27:20,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:20,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433330804] [2024-11-28 03:27:20,226 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:27:20,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:20,386 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:27:20,386 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:28:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1792 backedges. 0 proven. 1792 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:05,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:28:05,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433330804] [2024-11-28 03:28:05,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433330804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:28:05,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232014863] [2024-11-28 03:28:05,381 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:28:05,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:05,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:05,383 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:05,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-28 03:28:05,670 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:28:05,670 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:28:05,677 WARN L254 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 425 conjuncts are in the unsatisfiable core [2024-11-28 03:28:05,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:05,831 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 [2024-11-28 03:28:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1792 backedges. 0 proven. 1792 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:08,264 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:28:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1792 backedges. 0 proven. 1536 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-28 03:28:18,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232014863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:28:18,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:28:18,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 54, 37] total 151 [2024-11-28 03:28:18,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378242864] [2024-11-28 03:28:18,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:28:18,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2024-11-28 03:28:18,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:28:18,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2024-11-28 03:28:18,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=994, Invalid=21656, Unknown=0, NotChecked=0, Total=22650 [2024-11-28 03:28:18,006 INFO L87 Difference]: Start difference. First operand 244 states and 250 transitions. Second operand has 151 states, 151 states have (on average 3.7880794701986753) internal successors, (572), 151 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:29:11,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:29:11,982 INFO L93 Difference]: Finished difference Result 720 states and 780 transitions. [2024-11-28 03:29:11,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-11-28 03:29:11,983 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 3.7880794701986753) internal successors, (572), 151 states have internal predecessors, (572), 0 states have call successors, (0), 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 243 [2024-11-28 03:29:11,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:29:11,985 INFO L225 Difference]: With dead ends: 720 [2024-11-28 03:29:11,985 INFO L226 Difference]: Without dead ends: 544 [2024-11-28 03:29:11,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 462 SyntacticMatches, 1 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13413 ImplicationChecksByTransitivity, 51.4s TimeCoverageRelationStatistics Valid=3967, Invalid=54355, Unknown=0, NotChecked=0, Total=58322 [2024-11-28 03:29:11,987 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 1511 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 20547 mSolverCounterSat, 1672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 22219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1672 IncrementalHoareTripleChecker+Valid, 20547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:29:11,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 301 Invalid, 22219 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1672 Valid, 20547 Invalid, 0 Unknown, 0 Unchecked, 20.4s Time] [2024-11-28 03:29:11,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2024-11-28 03:29:12,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 503. [2024-11-28 03:29:12,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 1.1035856573705178) internal successors, (554), 502 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:29:12,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 554 transitions. [2024-11-28 03:29:12,296 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 554 transitions. Word has length 243 [2024-11-28 03:29:12,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:29:12,297 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 554 transitions. [2024-11-28 03:29:12,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 3.7880794701986753) internal successors, (572), 151 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:29:12,297 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 554 transitions. [2024-11-28 03:29:12,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-28 03:29:12,299 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:12,299 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:12,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-28 03:29:12,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-28 03:29:12,500 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:29:12,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:12,501 INFO L85 PathProgramCache]: Analyzing trace with hash -138621102, now seen corresponding path program 45 times [2024-11-28 03:29:12,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:12,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183113824] [2024-11-28 03:29:12,501 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:29:12,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:13,050 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-28 03:29:13,050 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:29:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 225 proven. 320 refuted. 0 times theorem prover too weak. 1280 trivial. 0 not checked. [2024-11-28 03:29:14,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:14,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183113824] [2024-11-28 03:29:14,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183113824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:29:14,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566124166] [2024-11-28 03:29:14,305 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:29:14,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:29:14,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:29:14,307 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:29:14,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-28 03:29:17,076 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-28 03:29:17,077 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:29:17,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 03:29:17,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:29:17,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 287 proven. 289 refuted. 0 times theorem prover too weak. 1249 trivial. 0 not checked. [2024-11-28 03:29:17,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:29:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 289 proven. 256 refuted. 0 times theorem prover too weak. 1280 trivial. 0 not checked. [2024-11-28 03:29:19,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566124166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:29:19,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:29:19,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 39, 37] total 74 [2024-11-28 03:29:19,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962224192] [2024-11-28 03:29:19,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:29:19,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-28 03:29:19,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:19,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-28 03:29:19,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1409, Invalid=3993, Unknown=0, NotChecked=0, Total=5402 [2024-11-28 03:29:19,252 INFO L87 Difference]: Start difference. First operand 503 states and 554 transitions. Second operand has 74 states, 74 states have (on average 2.324324324324324) internal successors, (172), 74 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:29:24,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:29:24,441 INFO L93 Difference]: Finished difference Result 991 states and 1084 transitions. [2024-11-28 03:29:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 03:29:24,441 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.324324324324324) internal successors, (172), 74 states have internal predecessors, (172), 0 states have call successors, (0), 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 245 [2024-11-28 03:29:24,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:29:24,444 INFO L225 Difference]: With dead ends: 991 [2024-11-28 03:29:24,444 INFO L226 Difference]: Without dead ends: 654 [2024-11-28 03:29:24,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 485 SyntacticMatches, 18 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5333 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3612, Invalid=11888, Unknown=0, NotChecked=0, Total=15500 [2024-11-28 03:29:24,447 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 550 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4826 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 5407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 4826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:29:24,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 45 Invalid, 5407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 4826 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 03:29:24,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2024-11-28 03:29:24,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 428. [2024-11-28 03:29:24,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.0304449648711944) internal successors, (440), 427 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:29:24,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 440 transitions. [2024-11-28 03:29:24,722 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 440 transitions. Word has length 245 [2024-11-28 03:29:24,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:29:24,722 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 440 transitions. [2024-11-28 03:29:24,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.324324324324324) internal successors, (172), 74 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:29:24,722 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 440 transitions. [2024-11-28 03:29:24,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-28 03:29:24,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:24,723 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:24,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-28 03:29:24,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-28 03:29:24,924 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:29:24,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:24,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2057546670, now seen corresponding path program 46 times [2024-11-28 03:29:24,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:24,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5690073] [2024-11-28 03:29:24,925 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:29:24,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:24,973 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:29:24,973 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:29:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 289 proven. 256 refuted. 0 times theorem prover too weak. 1280 trivial. 0 not checked. [2024-11-28 03:29:26,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:26,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5690073] [2024-11-28 03:29:26,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5690073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:29:26,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615559163] [2024-11-28 03:29:26,067 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:29:26,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:29:26,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:29:26,069 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:29:26,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-28 03:29:26,368 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:29:26,368 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:29:26,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 03:29:26,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:29:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 289 proven. 256 refuted. 0 times theorem prover too weak. 1280 trivial. 0 not checked. [2024-11-28 03:29:27,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:29:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 289 proven. 256 refuted. 0 times theorem prover too weak. 1280 trivial. 0 not checked. [2024-11-28 03:29:28,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615559163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:29:28,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:29:28,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 54 [2024-11-28 03:29:28,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846274240] [2024-11-28 03:29:28,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:29:28,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-28 03:29:28,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:28,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-28 03:29:28,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=683, Invalid=2179, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 03:29:28,217 INFO L87 Difference]: Start difference. First operand 428 states and 440 transitions. Second operand has 54 states, 54 states have (on average 2.388888888888889) internal successors, (129), 54 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:29:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:29:30,402 INFO L93 Difference]: Finished difference Result 657 states and 674 transitions. [2024-11-28 03:29:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 03:29:30,402 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.388888888888889) internal successors, (129), 54 states have internal predecessors, (129), 0 states have call successors, (0), 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 245 [2024-11-28 03:29:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:29:30,404 INFO L225 Difference]: With dead ends: 657 [2024-11-28 03:29:30,404 INFO L226 Difference]: Without dead ends: 265 [2024-11-28 03:29:30,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 439 SyntacticMatches, 34 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2057 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1193, Invalid=3777, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 03:29:30,405 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 747 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 766 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 766 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:29:30,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 46 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [766 Valid, 1751 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 03:29:30,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-28 03:29:30,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 258. [2024-11-28 03:29:30,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.027237354085603) internal successors, (264), 257 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:29:30,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 264 transitions. [2024-11-28 03:29:30,584 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 264 transitions. Word has length 245 [2024-11-28 03:29:30,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:29:30,585 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 264 transitions. [2024-11-28 03:29:30,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.388888888888889) internal successors, (129), 54 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:29:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 264 transitions. [2024-11-28 03:29:30,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-28 03:29:30,586 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:30,586 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:30,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-28 03:29:30,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e28aed4-627c-43a6-a43b-ef76ada4afe3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-28 03:29:30,787 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:29:30,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:30,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1868908394, now seen corresponding path program 47 times [2024-11-28 03:29:30,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:30,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087700693] [2024-11-28 03:29:30,787 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:29:30,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:31,261 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-28 03:29:31,261 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat