./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/brs2.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_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/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_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/brs2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/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_00839339-2177-4108-a210-de628f015be7/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 fc354f47e1cc26b26f82415b2113a1e937a24cebf9ecb225fe7f6242be1c8136 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:26:01,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:26:01,193 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:26:01,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:26:01,201 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:26:01,224 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:26:01,225 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:26:01,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:26:01,225 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:26:01,226 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:26:01,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:26:01,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:26:01,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:26:01,226 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:26:01,227 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:26:01,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:26:01,227 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:26:01,227 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:26:01,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:26:01,227 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:26:01,228 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:26:01,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:26:01,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:26:01,228 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:26:01,228 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:26:01,228 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:26:01,228 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:26:01,229 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:26:01,229 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:26:01,229 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:26:01,229 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:26:01,229 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:26:01,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:26:01,229 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:26:01,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:26:01,230 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:26:01,230 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:26:01,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:26:01,230 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:26:01,230 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:26:01,230 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:26:01,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:26:01,231 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:26:01,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:26:01,231 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:26:01,231 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:26:01,231 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:26:01,231 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:26:01,231 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_00839339-2177-4108-a210-de628f015be7/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 -> fc354f47e1cc26b26f82415b2113a1e937a24cebf9ecb225fe7f6242be1c8136 [2024-11-28 02:26:01,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:26:01,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:26:01,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:26:01,523 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:26:01,523 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:26:01,525 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-fpi/brs2.c [2024-11-28 02:26:05,066 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/data/7b87c98f5/d63d8a1193ca4469a73d62ec0f1947a3/FLAGe71859f77 [2024-11-28 02:26:05,390 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:26:05,390 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/sv-benchmarks/c/array-fpi/brs2.c [2024-11-28 02:26:05,399 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/data/7b87c98f5/d63d8a1193ca4469a73d62ec0f1947a3/FLAGe71859f77 [2024-11-28 02:26:05,419 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/data/7b87c98f5/d63d8a1193ca4469a73d62ec0f1947a3 [2024-11-28 02:26:05,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:26:05,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:26:05,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:26:05,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:26:05,432 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:26:05,433 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:26:05" (1/1) ... [2024-11-28 02:26:05,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d040cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05, skipping insertion in model container [2024-11-28 02:26:05,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:26:05" (1/1) ... [2024-11-28 02:26:05,453 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:26:05,651 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_00839339-2177-4108-a210-de628f015be7/sv-benchmarks/c/array-fpi/brs2.c[587,600] [2024-11-28 02:26:05,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:26:05,706 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:26:05,723 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_00839339-2177-4108-a210-de628f015be7/sv-benchmarks/c/array-fpi/brs2.c[587,600] [2024-11-28 02:26:05,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:26:05,763 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:26:05,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05 WrapperNode [2024-11-28 02:26:05,764 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:26:05,769 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:26:05,769 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:26:05,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:26:05,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05" (1/1) ... [2024-11-28 02:26:05,797 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05" (1/1) ... [2024-11-28 02:26:05,821 INFO L138 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-11-28 02:26:05,821 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:26:05,822 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:26:05,822 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:26:05,822 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:26:05,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05" (1/1) ... [2024-11-28 02:26:05,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05" (1/1) ... [2024-11-28 02:26:05,840 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05" (1/1) ... [2024-11-28 02:26:05,867 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 7, 3, 4]. 44 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 4 writes are split as follows [0, 0, 2, 2]. [2024-11-28 02:26:05,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05" (1/1) ... [2024-11-28 02:26:05,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05" (1/1) ... [2024-11-28 02:26:05,880 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05" (1/1) ... [2024-11-28 02:26:05,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05" (1/1) ... [2024-11-28 02:26:05,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05" (1/1) ... [2024-11-28 02:26:05,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05" (1/1) ... [2024-11-28 02:26:05,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05" (1/1) ... [2024-11-28 02:26:05,900 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:26:05,901 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:26:05,901 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:26:05,901 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:26:05,902 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05" (1/1) ... [2024-11-28 02:26:05,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:26:05,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:05,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:26:05,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:26:06,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:26:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:26:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:26:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:26:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:26:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:26:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:26:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:26:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:26:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:26:06,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:26:06,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:26:06,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:26:06,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:26:06,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:26:06,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:26:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:26:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:26:06,132 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:26:06,134 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:26:06,361 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-28 02:26:06,362 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:26:06,374 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:26:06,374 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:26:06,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:26:06 BoogieIcfgContainer [2024-11-28 02:26:06,375 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:26:06,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:26:06,379 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:26:06,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:26:06,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:26:05" (1/3) ... [2024-11-28 02:26:06,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1381114d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:26:06, skipping insertion in model container [2024-11-28 02:26:06,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:05" (2/3) ... [2024-11-28 02:26:06,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1381114d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:26:06, skipping insertion in model container [2024-11-28 02:26:06,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:26:06" (3/3) ... [2024-11-28 02:26:06,389 INFO L128 eAbstractionObserver]: Analyzing ICFG brs2.c [2024-11-28 02:26:06,412 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:26:06,414 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG brs2.c that has 1 procedures, 20 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 02:26:06,496 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:26:06,517 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;@f525e1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:26:06,518 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:26:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:06,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 02:26:06,533 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:06,534 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:06,535 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:06,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:06,544 INFO L85 PathProgramCache]: Analyzing trace with hash 706295566, now seen corresponding path program 1 times [2024-11-28 02:26:06,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:06,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656918567] [2024-11-28 02:26:06,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:06,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:06,749 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 02:26:06,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:06,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656918567] [2024-11-28 02:26:06,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656918567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:06,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:06,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:26:06,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055442463] [2024-11-28 02:26:06,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:06,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:26:06,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:06,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:26:06,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:26:06,788 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:06,806 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2024-11-28 02:26:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:26:06,808 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 02:26:06,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:06,815 INFO L225 Difference]: With dead ends: 36 [2024-11-28 02:26:06,816 INFO L226 Difference]: Without dead ends: 16 [2024-11-28 02:26:06,819 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 02:26:06,823 INFO L435 NwaCegarLoop]: 24 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, 24 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 02:26:06,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:26:06,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-28 02:26:06,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-28 02:26:06,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 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 02:26:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-28 02:26:06,863 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2024-11-28 02:26:06,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:06,863 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-28 02:26:06,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:06,864 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-11-28 02:26:06,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 02:26:06,864 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:06,864 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:06,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:26:06,865 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:06,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:06,866 INFO L85 PathProgramCache]: Analyzing trace with hash -389640480, now seen corresponding path program 1 times [2024-11-28 02:26:06,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:06,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329758585] [2024-11-28 02:26:06,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:06,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:07,105 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 02:26:07,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:07,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329758585] [2024-11-28 02:26:07,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329758585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:07,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:07,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:26:07,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698388290] [2024-11-28 02:26:07,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:07,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:26:07,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:07,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:26:07,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:26:07,109 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:07,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:07,219 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2024-11-28 02:26:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:26:07,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 02:26:07,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:07,220 INFO L225 Difference]: With dead ends: 33 [2024-11-28 02:26:07,221 INFO L226 Difference]: Without dead ends: 22 [2024-11-28 02:26:07,221 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 02:26:07,222 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:07,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 12 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:26:07,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-28 02:26:07,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-28 02:26:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:07,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-28 02:26:07,229 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2024-11-28 02:26:07,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:07,230 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-28 02:26:07,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:07,230 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-28 02:26:07,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 02:26:07,231 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:07,231 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:07,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:26:07,232 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:07,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:07,232 INFO L85 PathProgramCache]: Analyzing trace with hash 387045340, now seen corresponding path program 1 times [2024-11-28 02:26:07,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:07,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123727623] [2024-11-28 02:26:07,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:07,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:26:07,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:07,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123727623] [2024-11-28 02:26:07,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123727623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:07,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:07,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:26:07,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070952689] [2024-11-28 02:26:07,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:07,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:26:07,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:07,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:26:07,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:26:07,664 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 02:26:07,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:07,740 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-11-28 02:26:07,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:26:07,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-11-28 02:26:07,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:07,741 INFO L225 Difference]: With dead ends: 27 [2024-11-28 02:26:07,741 INFO L226 Difference]: Without dead ends: 23 [2024-11-28 02:26:07,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:26:07,743 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:07,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:26:07,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-28 02:26:07,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-11-28 02:26:07,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-28 02:26:07,753 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2024-11-28 02:26:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:07,754 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-28 02:26:07,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 02:26:07,754 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-28 02:26:07,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 02:26:07,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:07,755 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:07,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:26:07,755 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:07,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:07,756 INFO L85 PathProgramCache]: Analyzing trace with hash 821801834, now seen corresponding path program 1 times [2024-11-28 02:26:07,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:07,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883921583] [2024-11-28 02:26:07,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:07,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:08,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:08,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883921583] [2024-11-28 02:26:08,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883921583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:26:08,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724172365] [2024-11-28 02:26:08,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:08,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:08,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:08,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:26:08,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:26:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:08,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:26:08,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:08,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:08,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724172365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:26:08,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:26:08,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 02:26:08,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242786844] [2024-11-28 02:26:08,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:26:08,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:26:08,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:08,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:26:08,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:26:08,458 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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 02:26:08,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:08,671 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2024-11-28 02:26:08,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:26:08,671 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 02:26:08,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:08,672 INFO L225 Difference]: With dead ends: 43 [2024-11-28 02:26:08,672 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 02:26:08,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:26:08,674 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:08,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:26:08,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 02:26:08,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2024-11-28 02:26:08,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:08,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-28 02:26:08,679 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2024-11-28 02:26:08,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:08,680 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-28 02:26:08,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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 02:26:08,680 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-28 02:26:08,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 02:26:08,681 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:08,681 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:08,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:26:08,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-28 02:26:08,885 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:08,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:08,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1186802396, now seen corresponding path program 1 times [2024-11-28 02:26:08,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:08,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870887412] [2024-11-28 02:26:08,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:08,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:09,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:09,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870887412] [2024-11-28 02:26:09,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870887412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:26:09,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201630523] [2024-11-28 02:26:09,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:09,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:09,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:09,933 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:26:09,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:26:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:10,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:26:10,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:10,186 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 15 treesize of output 1 [2024-11-28 02:26:10,336 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 02:26:10,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 02:26:10,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 02:26:10,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:26:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:10,672 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:10,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-28 02:26:10,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-28 02:26:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:11,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201630523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:26:11,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:26:11,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2024-11-28 02:26:11,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840233223] [2024-11-28 02:26:11,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:26:11,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 02:26:11,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:11,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 02:26:11,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:26:11,056 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 02:26:11,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:11,493 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2024-11-28 02:26:11,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:26:11,493 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-28 02:26:11,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:11,494 INFO L225 Difference]: With dead ends: 50 [2024-11-28 02:26:11,494 INFO L226 Difference]: Without dead ends: 30 [2024-11-28 02:26:11,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:26:11,496 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:11,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 64 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:26:11,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-28 02:26:11,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-11-28 02:26:11,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:11,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-28 02:26:11,502 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2024-11-28 02:26:11,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:11,503 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-28 02:26:11,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 02:26:11,503 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-28 02:26:11,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 02:26:11,504 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:11,504 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:11,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:26:11,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:11,705 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:11,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:11,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2094301078, now seen corresponding path program 2 times [2024-11-28 02:26:11,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:11,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141405743] [2024-11-28 02:26:11,706 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:26:11,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:11,740 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:26:11,741 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:11,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:11,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141405743] [2024-11-28 02:26:11,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141405743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:26:11,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929730183] [2024-11-28 02:26:11,948 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:26:11,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:11,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:11,950 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:26:11,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:26:12,056 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:26:12,056 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:12,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:26:12,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:12,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:12,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929730183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:26:12,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:26:12,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-28 02:26:12,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851546601] [2024-11-28 02:26:12,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:26:12,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:26:12,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:12,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:26:12,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:26:12,307 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 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 02:26:12,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:12,491 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2024-11-28 02:26:12,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:26:12,492 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 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) Word has length 26 [2024-11-28 02:26:12,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:12,494 INFO L225 Difference]: With dead ends: 54 [2024-11-28 02:26:12,494 INFO L226 Difference]: Without dead ends: 34 [2024-11-28 02:26:12,494 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:26:12,495 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:12,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 26 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:26:12,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-28 02:26:12,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2024-11-28 02:26:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:12,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-28 02:26:12,508 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 26 [2024-11-28 02:26:12,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:12,508 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-28 02:26:12,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 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 02:26:12,509 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-28 02:26:12,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 02:26:12,509 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:12,509 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:12,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:26:12,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:12,710 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:12,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:12,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1995071066, now seen corresponding path program 3 times [2024-11-28 02:26:12,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:12,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537592382] [2024-11-28 02:26:12,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:26:12,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:12,808 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 02:26:12,808 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:26:14,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:14,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537592382] [2024-11-28 02:26:14,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537592382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:26:14,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942967585] [2024-11-28 02:26:14,548 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:26:14,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:14,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:14,551 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:26:14,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:26:14,662 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 02:26:14,662 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:26:14,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 02:26:14,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:14,732 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 23 treesize of output 1 [2024-11-28 02:26:14,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-28 02:26:19,438 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 02:26:19,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 02:26:21,982 INFO L349 Elim1Store]: treesize reduction 8, result has 79.5 percent of original size [2024-11-28 02:26:21,982 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 62 treesize of output 57 [2024-11-28 02:26:21,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-28 02:26:22,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:26:22,412 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:26:22,412 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:26:23,504 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:26:23,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942967585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:26:23,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:26:23,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 51 [2024-11-28 02:26:23,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431472521] [2024-11-28 02:26:23,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:26:23,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-28 02:26:23,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:23,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-28 02:26:23,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=2221, Unknown=2, NotChecked=0, Total=2550 [2024-11-28 02:26:23,507 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 51 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 51 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 02:26:29,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:26:48,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:26:52,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:27:13,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:27:25,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:27:40,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:27:54,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:28:02,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:28:06,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:28:14,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:28:27,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:28:47,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:28:51,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:29:10,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:29:15,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:29:31,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:29:32,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:29:45,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:29:49,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:29:57,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:29:57,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:29:57,932 INFO L93 Difference]: Finished difference Result 96 states and 117 transitions. [2024-11-28 02:29:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-28 02:29:57,933 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 51 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 29 [2024-11-28 02:29:57,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:29:57,933 INFO L225 Difference]: With dead ends: 96 [2024-11-28 02:29:57,934 INFO L226 Difference]: Without dead ends: 70 [2024-11-28 02:29:57,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3083 ImplicationChecksByTransitivity, 144.5s TimeCoverageRelationStatistics Valid=1683, Invalid=8583, Unknown=36, NotChecked=0, Total=10302 [2024-11-28 02:29:57,940 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 187 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 163 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:29:57,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 121 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 731 Invalid, 19 Unknown, 0 Unchecked, 78.1s Time] [2024-11-28 02:29:57,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-28 02:29:57,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 55. [2024-11-28 02:29:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:57,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-11-28 02:29:57,960 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 29 [2024-11-28 02:29:57,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:29:57,960 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-11-28 02:29:57,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 51 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 02:29:57,961 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-11-28 02:29:57,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 02:29:57,962 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:29:57,962 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:57,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:29:58,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:58,165 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:29:58,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:58,165 INFO L85 PathProgramCache]: Analyzing trace with hash -444375524, now seen corresponding path program 4 times [2024-11-28 02:29:58,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:29:58,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925203028] [2024-11-28 02:29:58,165 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:29:58,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:29:58,196 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:29:58,196 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:29:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:29:58,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:29:58,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925203028] [2024-11-28 02:29:58,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925203028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:58,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508657531] [2024-11-28 02:29:58,536 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:29:58,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:58,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:58,539 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:58,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:29:58,604 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:29:58,604 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:29:58,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 02:29:58,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:58,627 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 23 treesize of output 1 [2024-11-28 02:29:58,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-28 02:29:58,802 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:29:58,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-28 02:29:59,044 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 02:29:59,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 02:29:59,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 30 [2024-11-28 02:29:59,735 INFO L349 Elim1Store]: treesize reduction 26, result has 70.1 percent of original size [2024-11-28 02:29:59,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 85 treesize of output 92 [2024-11-28 02:29:59,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 15 [2024-11-28 02:29:59,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:30:00,029 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:30:00,029 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:30:01,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508657531] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:01,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:01,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 22, 22] total 51 [2024-11-28 02:30:01,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703905451] [2024-11-28 02:30:01,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:01,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-28 02:30:01,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:01,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-28 02:30:01,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=2281, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 02:30:01,213 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 51 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 51 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 02:30:09,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:09,613 INFO L93 Difference]: Finished difference Result 142 states and 169 transitions. [2024-11-28 02:30:09,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-28 02:30:09,614 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 51 states have internal predecessors, (79), 0 states have call successors, (0), 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 02:30:09,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:09,616 INFO L225 Difference]: With dead ends: 142 [2024-11-28 02:30:09,616 INFO L226 Difference]: Without dead ends: 125 [2024-11-28 02:30:09,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3986 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=2188, Invalid=12574, Unknown=0, NotChecked=0, Total=14762 [2024-11-28 02:30:09,620 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 235 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:09,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 151 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 02:30:09,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-28 02:30:09,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 78. [2024-11-28 02:30:09,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 77 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:09,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2024-11-28 02:30:09,650 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 35 [2024-11-28 02:30:09,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:09,651 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2024-11-28 02:30:09,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 51 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 02:30:09,651 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2024-11-28 02:30:09,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 02:30:09,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:09,652 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:09,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:30:09,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:09,856 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:09,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:09,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1886237978, now seen corresponding path program 5 times [2024-11-28 02:30:09,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:09,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574718231] [2024-11-28 02:30:09,857 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:30:09,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:09,899 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 02:30:09,899 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:10,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:10,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574718231] [2024-11-28 02:30:10,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574718231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:10,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271948153] [2024-11-28 02:30:10,078 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:30:10,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:10,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:10,081 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:10,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:30:10,174 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 02:30:10,174 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:10,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:30:10,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:10,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:10,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271948153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:10,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:10,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 20 [2024-11-28 02:30:10,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893687175] [2024-11-28 02:30:10,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:10,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:30:10,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:10,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:30:10,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:30:10,476 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 02:30:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:10,796 INFO L93 Difference]: Finished difference Result 197 states and 231 transitions. [2024-11-28 02:30:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 02:30:10,796 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 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 02:30:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:10,797 INFO L225 Difference]: With dead ends: 197 [2024-11-28 02:30:10,797 INFO L226 Difference]: Without dead ends: 97 [2024-11-28 02:30:10,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:30:10,798 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 72 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:10,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 33 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:30:10,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-28 02:30:10,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 84. [2024-11-28 02:30:10,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 83 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 02:30:10,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2024-11-28 02:30:10,836 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 35 [2024-11-28 02:30:10,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:10,837 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2024-11-28 02:30:10,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 02:30:10,837 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2024-11-28 02:30:10,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 02:30:10,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:10,838 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:10,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:30:11,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:11,039 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:11,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:11,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1070965080, now seen corresponding path program 6 times [2024-11-28 02:30:11,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:11,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851704713] [2024-11-28 02:30:11,039 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:30:11,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:11,128 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 02:30:11,128 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:13,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:13,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851704713] [2024-11-28 02:30:13,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851704713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:13,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974180585] [2024-11-28 02:30:13,677 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:30:13,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:13,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:13,678 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:13,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:30:13,775 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 02:30:13,775 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:13,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 02:30:13,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:13,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:30:13,881 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 02:30:13,976 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 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-28 02:30:14,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:30:14,140 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 02:30:14,423 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 02:30:14,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 02:30:14,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 17 [2024-11-28 02:30:14,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 23 [2024-11-28 02:30:15,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 24 [2024-11-28 02:30:15,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:30:15,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 23 [2024-11-28 02:30:15,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:30:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:15,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:17,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 67 [2024-11-28 02:30:17,467 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:30:17,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 5742 treesize of output 4846 [2024-11-28 02:30:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:17,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974180585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:17,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:30:17,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28, 28] total 75 [2024-11-28 02:30:17,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644645038] [2024-11-28 02:30:17,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:17,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-28 02:30:17,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:17,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-28 02:30:17,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=808, Invalid=4742, Unknown=0, NotChecked=0, Total=5550 [2024-11-28 02:30:17,707 INFO L87 Difference]: Start difference. First operand 84 states and 99 transitions. Second operand has 75 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 75 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 02:30:30,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:30,944 INFO L93 Difference]: Finished difference Result 231 states and 289 transitions. [2024-11-28 02:30:30,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-28 02:30:30,944 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 75 states have internal predecessors, (107), 0 states have call successors, (0), 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 41 [2024-11-28 02:30:30,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:30,945 INFO L225 Difference]: With dead ends: 231 [2024-11-28 02:30:30,946 INFO L226 Difference]: Without dead ends: 155 [2024-11-28 02:30:30,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7118 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=3489, Invalid=19161, Unknown=0, NotChecked=0, Total=22650 [2024-11-28 02:30:30,950 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 324 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:30,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 191 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 02:30:30,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-28 02:30:31,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 132. [2024-11-28 02:30:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.2061068702290076) internal successors, (158), 131 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 02:30:31,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 158 transitions. [2024-11-28 02:30:31,020 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 158 transitions. Word has length 41 [2024-11-28 02:30:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:31,020 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 158 transitions. [2024-11-28 02:30:31,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 75 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 02:30:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 158 transitions. [2024-11-28 02:30:31,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 02:30:31,021 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:31,021 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:31,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:30:31,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:30:31,222 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:31,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:31,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1891649368, now seen corresponding path program 7 times [2024-11-28 02:30:31,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:31,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108427692] [2024-11-28 02:30:31,223 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:30:31,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:35,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:35,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108427692] [2024-11-28 02:30:35,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108427692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:30:35,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33992297] [2024-11-28 02:30:35,045 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:30:35,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:35,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:35,050 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:35,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:30:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:35,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-28 02:30:35,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:35,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:30:35,363 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 02:30:35,503 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 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-28 02:30:35,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:30:35,647 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 02:30:35,888 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 0 case distinctions, treesize of input 44 treesize of output 41 [2024-11-28 02:30:36,140 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 02:30:36,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 02:30:36,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 17 [2024-11-28 02:30:36,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 23 [2024-11-28 02:30:36,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 24 [2024-11-28 02:30:37,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 28 [2024-11-28 02:30:37,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:30:37,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 27 [2024-11-28 02:30:37,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:30:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:30:37,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:40,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 237 treesize of output 227 [2024-11-28 02:30:42,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:30:43,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 26819862277914806 treesize of output 26116174836138166 [2024-11-28 02:31:09,015 WARN L286 SmtUtils]: Spent 25.74s on a formula simplification. DAG size of input: 70847 DAG size of output: 94 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:31:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:09,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33992297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:09,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:09,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 27] total 76 [2024-11-28 02:31:09,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478449176] [2024-11-28 02:31:09,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:09,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-28 02:31:09,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:09,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-28 02:31:09,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=5099, Unknown=0, NotChecked=0, Total=5700 [2024-11-28 02:31:09,614 INFO L87 Difference]: Start difference. First operand 132 states and 158 transitions. Second operand has 76 states, 76 states have (on average 1.644736842105263) internal successors, (125), 76 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 02:31:23,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:23,587 INFO L93 Difference]: Finished difference Result 264 states and 323 transitions. [2024-11-28 02:31:23,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-28 02:31:23,588 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.644736842105263) internal successors, (125), 76 states have internal predecessors, (125), 0 states have call successors, (0), 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 02:31:23,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:23,591 INFO L225 Difference]: With dead ends: 264 [2024-11-28 02:31:23,592 INFO L226 Difference]: Without dead ends: 146 [2024-11-28 02:31:23,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3702 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=1273, Invalid=10499, Unknown=0, NotChecked=0, Total=11772 [2024-11-28 02:31:23,597 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 138 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:23,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 154 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-28 02:31:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-28 02:31:23,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 87. [2024-11-28 02:31:23,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.127906976744186) internal successors, (97), 86 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:31:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2024-11-28 02:31:23,632 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 47 [2024-11-28 02:31:23,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:23,633 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2024-11-28 02:31:23,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.644736842105263) internal successors, (125), 76 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 02:31:23,633 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2024-11-28 02:31:23,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 02:31:23,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:23,634 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:23,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 02:31:23,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:31:23,835 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:23,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:23,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2093268370, now seen corresponding path program 8 times [2024-11-28 02:31:23,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:23,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956468559] [2024-11-28 02:31:23,835 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:31:23,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:23,854 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:31:23,854 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 54 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:24,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:24,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956468559] [2024-11-28 02:31:24,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956468559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:24,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687580652] [2024-11-28 02:31:24,903 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:31:24,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:24,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:24,905 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:24,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:31:25,005 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:31:25,006 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:25,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:31:25,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:26,270 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:31:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:27,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687580652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:31:27,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:31:27,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-28 02:31:27,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567032813] [2024-11-28 02:31:27,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:31:27,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:31:27,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:31:27,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:31:27,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:31:27,134 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:31:27,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:31:27,944 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2024-11-28 02:31:27,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:31:27,944 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-28 02:31:27,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:31:27,945 INFO L225 Difference]: With dead ends: 137 [2024-11-28 02:31:27,945 INFO L226 Difference]: Without dead ends: 61 [2024-11-28 02:31:27,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 78 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:31:27,946 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 46 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:31:27,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 44 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:31:27,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-28 02:31:27,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2024-11-28 02:31:27,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0714285714285714) internal successors, (60), 56 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 02:31:27,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2024-11-28 02:31:27,963 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 50 [2024-11-28 02:31:27,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:31:27,963 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2024-11-28 02:31:27,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:31:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2024-11-28 02:31:27,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 02:31:27,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:31:27,964 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:31:27,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:31:28,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 02:31:28,164 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:31:28,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:31:28,164 INFO L85 PathProgramCache]: Analyzing trace with hash -277888810, now seen corresponding path program 9 times [2024-11-28 02:31:28,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:31:28,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164633784] [2024-11-28 02:31:28,165 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:31:28,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:28,254 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-28 02:31:28,255 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:35,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:35,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164633784] [2024-11-28 02:31:35,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164633784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:35,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989132257] [2024-11-28 02:31:35,928 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:31:35,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:35,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:35,930 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:35,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:31:36,094 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-28 02:31:36,094 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:31:36,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-28 02:31:36,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:31:36,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:31:36,606 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 02:31:36,879 INFO L349 Elim1Store]: treesize reduction 36, result has 39.0 percent of original size [2024-11-28 02:31:36,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 29 [2024-11-28 02:31:37,364 INFO L349 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2024-11-28 02:31:37,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 43 treesize of output 52 [2024-11-28 02:31:38,001 INFO L349 Elim1Store]: treesize reduction 68, result has 25.3 percent of original size [2024-11-28 02:31:38,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 65 [2024-11-28 02:31:38,840 INFO L349 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2024-11-28 02:31:38,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 72 treesize of output 87 [2024-11-28 02:31:40,784 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 02:31:42,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 02:31:43,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 21 [2024-11-28 02:31:44,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 29 [2024-11-28 02:31:46,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 38 [2024-11-28 02:31:47,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 47 [2024-11-28 02:31:49,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 52 [2024-11-28 02:31:49,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:31:49,726 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:31:49,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 35 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 106 treesize of output 132 [2024-11-28 02:31:51,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:31:51,339 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:31:51,339 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:32:02,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2024-11-28 02:32:02,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:32:02,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 432 treesize of output 368 [2024-11-28 02:32:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:02,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989132257] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:32:02,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:32:02,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 35, 37] total 104 [2024-11-28 02:32:02,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896630307] [2024-11-28 02:32:02,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:32:02,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-11-28 02:32:02,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:32:02,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-11-28 02:32:02,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=890, Invalid=9822, Unknown=0, NotChecked=0, Total=10712 [2024-11-28 02:32:02,790 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 104 states, 104 states have (on average 1.4423076923076923) internal successors, (150), 104 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 02:32:40,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:32:40,946 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2024-11-28 02:32:40,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-28 02:32:40,947 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.4423076923076923) internal successors, (150), 104 states have internal predecessors, (150), 0 states have call successors, (0), 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 53 [2024-11-28 02:32:40,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:32:40,948 INFO L225 Difference]: With dead ends: 129 [2024-11-28 02:32:40,948 INFO L226 Difference]: Without dead ends: 92 [2024-11-28 02:32:40,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 9433 ImplicationChecksByTransitivity, 53.3s TimeCoverageRelationStatistics Valid=3223, Invalid=26533, Unknown=0, NotChecked=0, Total=29756 [2024-11-28 02:32:40,953 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 380 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 2338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:32:40,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 171 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-28 02:32:40,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-28 02:32:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 60. [2024-11-28 02:32:40,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:32:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-11-28 02:32:40,985 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 53 [2024-11-28 02:32:40,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:32:40,985 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-11-28 02:32:40,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.4423076923076923) internal successors, (150), 104 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 02:32:40,986 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-11-28 02:32:40,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 02:32:40,986 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:32:40,986 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:32:40,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:32:41,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:41,187 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:32:41,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:32:41,187 INFO L85 PathProgramCache]: Analyzing trace with hash 157708336, now seen corresponding path program 10 times [2024-11-28 02:32:41,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:32:41,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262577613] [2024-11-28 02:32:41,188 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:32:41,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:32:41,209 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:32:41,209 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:32:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 13 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:42,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:32:42,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262577613] [2024-11-28 02:32:42,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262577613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:32:42,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183509426] [2024-11-28 02:32:42,856 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:32:42,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:32:42,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:32:42,859 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:32:42,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:32:42,963 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:32:42,964 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:32:42,965 WARN L254 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-28 02:32:42,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:32:42,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 02:32:43,228 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 36 treesize of output 16 [2024-11-28 02:32:43,551 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:32:43,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-28 02:32:43,995 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 0 case distinctions, treesize of input 60 treesize of output 46 [2024-11-28 02:32:44,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:32:44,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 64 treesize of output 72 [2024-11-28 02:32:45,066 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 0 case distinctions, treesize of input 84 treesize of output 76 [2024-11-28 02:32:45,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:32:45,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 102 [2024-11-28 02:32:47,195 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 02:32:47,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 02:32:48,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 25 [2024-11-28 02:32:49,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 33 [2024-11-28 02:32:50,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 40 [2024-11-28 02:32:51,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 47 [2024-11-28 02:32:51,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 54 [2024-11-28 02:32:54,519 INFO L349 Elim1Store]: treesize reduction 168, result has 57.3 percent of original size [2024-11-28 02:32:54,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 153 treesize of output 272 [2024-11-28 02:32:54,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 19 [2024-11-28 02:32:56,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:32:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 34 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:56,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:33:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 13 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:07,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183509426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:33:07,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:33:07,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 38, 38] total 93 [2024-11-28 02:33:07,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202653924] [2024-11-28 02:33:07,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:33:07,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-11-28 02:33:07,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:07,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-11-28 02:33:07,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=932, Invalid=7624, Unknown=0, NotChecked=0, Total=8556 [2024-11-28 02:33:07,768 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 93 states, 93 states have (on average 1.6451612903225807) internal successors, (153), 93 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:43,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:43,831 INFO L93 Difference]: Finished difference Result 122 states and 131 transitions. [2024-11-28 02:33:43,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-28 02:33:43,832 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.6451612903225807) internal successors, (153), 93 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-28 02:33:43,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:43,832 INFO L225 Difference]: With dead ends: 122 [2024-11-28 02:33:43,832 INFO L226 Difference]: Without dead ends: 116 [2024-11-28 02:33:43,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9834 ImplicationChecksByTransitivity, 47.9s TimeCoverageRelationStatistics Valid=4138, Invalid=30272, Unknown=0, NotChecked=0, Total=34410 [2024-11-28 02:33:43,834 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 491 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:33:43,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 182 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-28 02:33:43,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-28 02:33:43,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 63. [2024-11-28 02:33:43,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 02:33:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-11-28 02:33:43,880 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 56 [2024-11-28 02:33:43,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:43,881 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-11-28 02:33:43,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.6451612903225807) internal successors, (153), 93 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:43,881 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-11-28 02:33:43,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 02:33:43,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:43,881 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:43,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:33:44,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:44,082 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:44,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:44,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1936083606, now seen corresponding path program 11 times [2024-11-28 02:33:44,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:44,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705814167] [2024-11-28 02:33:44,083 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:33:44,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:44,129 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 02:33:44,130 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:33:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 102 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:45,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:45,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705814167] [2024-11-28 02:33:45,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705814167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:45,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195078949] [2024-11-28 02:33:45,303 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:33:45,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:45,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:45,305 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:45,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:33:45,550 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 02:33:45,550 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:33:45,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 02:33:45,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:46,758 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 117 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:46,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:33:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 102 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:47,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195078949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:33:47,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:33:47,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 32 [2024-11-28 02:33:47,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812041596] [2024-11-28 02:33:47,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:33:47,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 02:33:47,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:47,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 02:33:47,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:33:47,674 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 02:33:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:49,179 INFO L93 Difference]: Finished difference Result 132 states and 136 transitions. [2024-11-28 02:33:49,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 02:33:49,179 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 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 59 [2024-11-28 02:33:49,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:49,180 INFO L225 Difference]: With dead ends: 132 [2024-11-28 02:33:49,180 INFO L226 Difference]: Without dead ends: 73 [2024-11-28 02:33:49,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 92 SyntacticMatches, 14 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=540, Invalid=1812, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 02:33:49,181 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 170 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:33:49,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 45 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:33:49,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-28 02:33:49,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2024-11-28 02:33:49,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 68 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 02:33:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2024-11-28 02:33:49,214 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 59 [2024-11-28 02:33:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:49,214 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2024-11-28 02:33:49,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 02:33:49,214 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2024-11-28 02:33:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 02:33:49,215 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:49,215 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:49,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:33:49,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:33:49,416 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:49,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:49,416 INFO L85 PathProgramCache]: Analyzing trace with hash -931341100, now seen corresponding path program 12 times [2024-11-28 02:33:49,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:49,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17631491] [2024-11-28 02:33:49,416 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:33:49,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:49,485 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-28 02:33:49,485 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:34:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 3 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:34:01,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:34:01,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17631491] [2024-11-28 02:34:01,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17631491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:34:01,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162081108] [2024-11-28 02:34:01,174 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:34:01,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:34:01,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:34:01,176 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:34:01,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00839339-2177-4108-a210-de628f015be7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:34:01,624 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-28 02:34:01,624 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:34:01,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-28 02:34:01,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:34:01,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:34:02,146 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 02:34:02,635 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 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-28 02:34:03,133 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:34:03,133 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 02:34:03,726 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:34:03,727 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 02:34:04,276 INFO L349 Elim1Store]: treesize reduction 68, result has 41.4 percent of original size [2024-11-28 02:34:04,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 49 treesize of output 72 [2024-11-28 02:34:05,273 INFO L349 Elim1Store]: treesize reduction 104, result has 33.3 percent of original size [2024-11-28 02:34:05,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 72 treesize of output 102 [2024-11-28 02:34:06,862 INFO L349 Elim1Store]: treesize reduction 148, result has 24.5 percent of original size [2024-11-28 02:34:06,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 91 treesize of output 120 [2024-11-28 02:34:10,335 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 02:34:12,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 02:34:14,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 21 [2024-11-28 02:34:16,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 27 [2024-11-28 02:34:18,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 32 [2024-11-28 02:34:20,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 37 [2024-11-28 02:34:22,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 44 [2024-11-28 02:34:23,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 53 [2024-11-28 02:34:25,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 48 [2024-11-28 02:34:25,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:25,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:26,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:26,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:26,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:26,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:26,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:26,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:26,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:26,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:26,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:26,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:26,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:26,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:34:26,198 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:34:26,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 49 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 112 treesize of output 98 [2024-11-28 02:34:27,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:34:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:34:27,519 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:34:44,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 223 [2024-11-28 02:34:53,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:34:53,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 195073069622840802 treesize of output 183814070554414562